Document Sample

                                  STEAM AND WATER ANALYSIS SYSTEM (SWAS)

1.01.00       General Requirements

1.01.01       Steam and Water Analysis System shall be furnished for continuous monitoring and control of water and
              steam purity in the plant cycle and at other important points as specified in this specification.

1.01.02       The sampling system shall obtain samples from steam and water system, which shall be adequately
              conditioned and fed to analysers for continuous analysis and provide parallel facility for grab sampling as

              The analyser outputs shall be used for providing -

              a)    Continuous monitoring of various parameters using indicator with an isolated analog outputs of 4-
                    20mA, DC for each parameter for monitoring in plant monitoring system.

              b)    Alarm for all significant parameters measurements which exceed their permissible limits including
                    those of sample conditioning system in the form of potential free contacts. The visual annunciation
                    will be taken care of in main control room. The alarm outputs should be terminated on the terminal
                    blocks provided in the junction box within the analyser panel.

1.01.03       The offered system shall be complete with sample conditioning devices and monitoring instruments (for
              temperature, pressure, flow & sample) and analysers as well as all required accessories to provide a
              complete and integrated sampling and analysis system as per the intent and requirements of this
              specification. Sample line diagrams shall be used to implement the design at system level. Vendor should
              be able to demonstrate the type test of sample conditioning system in his factory. As analyzer is the most
              important ingredient of SWAS, vendor should be able to provide proofs of collaboration with internationally
              recognized analyzer manufacturer from Europe or USA. Vendor to also furnish performance letters from
              reputed power companies like NTPC/BHEL. Non compliance to any of these criteria automatically
              disqualifies the vendor.

File : SWAS_specs                                                                                            Page 1 of 26
1.01.04       All piping, tubing, fittings and other sample wetted parts in the sampling and analysing system shall be of
              type 316 stainless steel, except for those within the analysers, which will be as furnished by the

1.01.05       All SWAS system components and accessories shall be from the latest proven product range of qualified
              manufacturers. The analysers offered should be of one single make. The SWAS package including
              analysers should be supplied by one approved systems vendor, who can supply the complete equipment.
              The vendor should have in-house capabilities to manufacture the package, such as TIG welding, NDT
              procedures, Hydrostatic testing upto 600 Bar, facilities for assembly & testing etc. The welding inside the
              SWAS panels should be done by welders approved for high pressure welding. The welders should be IBR
              / TUV approved.

1.01.06       Vendor to be able to provide proven track record in large nuclear and thermal power stations. Vendor
              should provide a list of supplies made to Thermal Power Stations (preferably NTPC owned) which should
              be good enough to qualify him as an experienced vendor for SWAS. Vendor should have supplied SWAS
              package of their own make to minimum 5 power plants of 210 MW size & 3 power plants of 500 MW size.
              Non compliance to this criteria automatically disqualifies the vendor.

1.01.07       All sample piping from primary root valves on process fluid lines/equipment to bulk head of SWAS panel
              will be arranged by the buyer. The cooling water & necessary electrical supply upto the SWAS package
              will be arranged by the buyer.

1.02.00       Sample Conditioning System

1.02.01       General

              1)    Sample conditioning system shall be designed and constructed to receive and condition all
                    samples (listed in the enclosed Sample Stream Specification) as required by the respective
                    analyzers connected to the sample streams. This will include conditioning components as specified
                    herein and shall cover the following:

File : SWAS_specs                                                                                            Page 2 of 26
                    a) Sample filtering

                    b) Primary and final sample cooling and temperature control

                    c) Pressure reduction and control as required. The pressure regulating device should be capable of
                    regulating the output pressure, irrespective of the upstream fluctuations, even at low flow or low
                    pressure conditions. Since pressure regulation is an important aspect of sample conditioning for the
                    reliable & accurate results from analyzers, pressure reducing devices are not acceptable.

                    d) Flow rate control with the help of glass tube purge rotameter with a built-in regulating valve. A
                    back pressure regulator is essential to ensure stable, regulated & priority sample flow condition to
                    the analyzers.

                    e) Other equipment as required by individual analysers or specified herein.

              2)    Sample line to analyzer elements shall incorporate an anti-siphon design to prevent possibility of
                    running dry because of a broken or plugged sample line.

              The sample conditioning system shall provide samples at 25oC within tolerance of + 1oC, at a pressure of
              about 2 kg/cm2 and at flow rates as required by individual analysers/streams. This is required for those
              analysers that cannot handle sample temperatures higher than 45 Deg.C. Vendor to clearly specify the
              maximum sample temperature that can be handled by each analyser offered. If adequate cooling water
              temperature is not available to achieve the above sample temperature, vendor should consider chiller with
              isothermal bath to achieve the same. The chiller / isothermal bath should be manufactured by the vendor.
              Non compliance to this criterion automatically disqualifies the vendor. The chiller should meet the
              specifications given below :    Chiller with Isothermal bath in sample conditioning

          a. The sample temperature of approx.45oC can be achieved in first stage of cooling in the sampling system
             by using cooling water provided by the Employer from his plant. The use of chilled water will be for cooling
             each sample stream with the required flow rate shall from 45 oC to 25oC  1oC. The chiller flow capacity

File : SWAS_specs                                                                                           Page 3 of 26
               shall be calculated assuming fouling factor of 0.2 on both sides of the coils. Capacity shall be approved by
               the Employer.

           b. The water used for re-circulation in the chilled water circuit will be condensate quality water. This water will
              be supplied by the Employer. The make-up water also will be provided by the Employer. The temperature
              of chilled water shall be 20oC. Refrigeration unit (chillers) to be furnished by the bidder.

           c. Coolers used in the chilled water circuit shall be submerged helical coil type and tube design with
              removable shell as per GDCD standard 163. Non compliance to this criterion automatically disqualifies the
              vendor Sample tube shall be seamless type. Sample cooler of coil shape (tube-in-tube) design is not

           d. Secondary cooler shall be provided with relief valve in addition to relief valve at cooling water headers.

           e. The chiller system details are given below :

          Chiller System

         i)    Chiller system shall have 2 x 100% of capacity. Water cooled chillers will be used for each unit and shall
               be sized to ensure sample steam temperature of 25 oC  1oC, when all relevant streams are running at
               maximum flow rate and maximum temperature. It shall have 25% spare capacity for future samples.

        ii)    The compressor shall be readily accessible for service and shall include low noise hermetically sealed
               motors. Compressor assembly shall also include crank case heaters, suction and discharge valves, forced
               feed lubrication system and an integrated motor protection system along with the necessary instruments.

        iii)   The condenser shall be water-cooled, removable shell and tube type, designed and constructed in
               accordance with the ASME code for unfired pressure vessels. A condenser water regulating valve shall be
               included. The cooling water shall be supplied from Employer’s cooling water system at a maximum
               temperature of 40oC and maximum flow rate as required by the chiller system. All the pipes, fittings &
               valves required to take the water from customer tapping point to the chiller shall be in the Vendor’s scope.

File : SWAS_specs                                                                                                Page 4 of 26
        iv)    Chiller shall be of the direct expansion type with refrigerant tubes inside a shell. The chiller is to be
               completely insulated and to be constructed in accordance with the ASME code for unfired pressure

         v)    Chiller package being one of the important & valuable element of SWAS package, it should be
               manufactured by the SWAS system supplier only. This is mandatory as the Chiller packages outsourced
               are susceptible to failures due to lesser control on quality. Non compliance to this criterion automatically
               disqualifies the vendor.

        vi)    The SWAS manufacturer should have sufficient experience in manufacturing the chiller packages &
               should have supplied these chiller packages along with SWAS to minimum 3 power plants of 500 MW

       vii)    Refrigerant circuit shall be complete with a thermostatic expansion valve, liquid line solenoid valve, sight
               glasses, filter – dryer, refrigerant shut-off and charging valves.

       viii)   The flow system shall be designed to provide the required flow to meet the conditions experienced at the
               chilled water bath.

        ix)    The chiller water pump shall be of the centrifugal type, close coupled, bronze fitted construction, complete
               with motor. Pump and motor shall be designed for continuous operation.

         x)    Vibration dampeners shall be provided matched for the packaged chiller and shall be mounted between
               the packaged chiller and the channel base.

        xi)    Cooling water and chilled water piping shall be provided with isolation valves.

       xii)    Necessary eye bolts should be provided for lifting purpose.

       xiii)   The Bidder shall provide detailed calculation for chiller capacity and other technical particulars like
               foundation details/mounting etc. with the proposal. These shall be subject to Employer’s approval.

File : SWAS_specs                                                                                              Page 5 of 26
       xiv)   The chiller system shall be provided with following items, in addition to any other instruments / equipments
              required for smooth, convenient operation of the system, which shall also be furnished by the Vendor.

              a)    100% redundant chilled water pumps with suction and discharge pressure gauges.

              b)    Chilled water circulation pump suitable for continuous operation with 100% standby facility.

              c)    Storage tank automatic water makeup with manual bypass facility.

              d)    Tank temperature indicator.

              e)    Storage tank level gauge & level guard.

              f)    Drain and overflow connection for tank.

              g)    DX shell & tube type chiller (meeting ASTM requirements)

              h)    Expansion valve

              i)    Antifreeze circuit

              j)    HP/LP cut out with disconnection facility

              k)    Electrical control panel

              l)    Necessary nameplates

File : SWAS_specs                                                                                             Page 6 of 26
1.02.02       Sample Isolation valves & Blowdown valves (for high pressure)

              All sample isolation valves & blowdown valves for sample pressures of 40 Kg/Cm2 & above shall be globe
              type with back seat arrangement, integral stellited seat and welded body/bonnet design. Preformed pure
              graphite rings should be used as gland packing material (graphoil ropes are not acceptable). The plug &
              spindle should be single piece & of non-rotating type. The plug should be guided throughout its travel. The
              spindle should be roller burnished to ensure leakage free performance. For blowdown service, valve
              should be provided with control cone such that the throttling area gets separated from seating area, thus
              enhancing the life of the seat. Dilution of these specifications will disqualify the vendor.

1.02.03       Sample Filters

              Sample particulars removal shall be accomplished by passing all samples through filters with type 316
              stainless steel body. The filter design should allow the removal of filter element without dis-assembling the
              Filter from the line. The filter element shall be capable of retaining particles of 40 micron and larger. The
              filter should be located before the pressure regulator.

1.02.04       Sample Cooler

              All samples having a temperature in excess of 45C shall be cooled by use of sample cooler.

              The sample cooler shall use general service water (softened water) as cooling water. This cooling water is
              tapped from general service water whose temperature may vary from 20 deg.C to 36 deg. C. Cooling
              water pressure differential available for SWAS will be minimum 1.5 bars. A maximum cooling water
              temperature of 36C shall be considered for design of sample cooling system. Capacity of cooler shall be
              adequate to cool the sample within 5 deg.C of cooling water inlet temperature considering the combined
              flow of each analyser connected to sample cooler and one manual grab sample at flow rate of 20
              Liters/Hour. Cooler capacity calculations shall be submitted by the bidder.

              Each sample cooler shall be protected by a built-in shell relief valve. The sample coil should not be welded
              to any part of the cooler. There should be a drain plug provided at the bottom of each cooler. Each cooler

File : SWAS_specs                                                                                             Page 7 of 26
              should be protected with a check valve on the coolant outlet of the cooler and a common relief valve on
              the cooling water header.

              Sample cooler shall be of submerged helical coil type of shell and tube design with removable shell. The
              sample tube shall be of seamless with no welds and other joint inside the cooling jacket. Unions shall be
              provided to facilitate removal of coils. All tubing and fittings & other components wetted by the sample
              shall be constructed of type 316 stainless steel. Cooler design shall conform to requirements of GDCD

              The design and thermodynamic performance of the coolers should be certified by a reputed external
              authority such as IIT to ensure performance to design specifications. Non compliance to this criterion
              automatically disqualifies the vendor.

              Sample cooler model number & catalogue should be submitted by the manufacturer. Sample coolers sub-
              contracted from third parties are not acceptable. Supplier should be able to prove that the sample coolers
              are indeed manufactured in-house. The finish of sample cooler should be uniform matt finish. The weld
              should be uniform all over. Weld quality is extremely important & coolers where weld is not uniform are
              liable for rejection. Non compliance to any of these criteria automatically disqualifies the vendor.

              Indigenous sample coolers that meet all the above requirements can only be accepted. Else imported
              coolers from recognized suppliers from Europe & USA can be accepted as an alternative. The imported
              coolers can be accepted only after producing necessary documentation to the buyer & buyer’s decision
              will be final.

              The cooling water header shall be provided with pressure gauge temperature gauge and flow switch and
              isolating valves.

              Provision shall be made for heat exchanger shell drain, which will be connected to drain header.

1.02.05       Sample Pressure Conditioning

              Regulated pressure of sample is one of the important aspects of a well engineered sample conditioning
              system. Regulated pressure irrespective of upstream pressure fluctuations is essential to ensure accurate,
              reliable & stable performance of analyzers. The pressure reduction of samples shall therefore be

File : SWAS_specs                                                                                           Page 8 of 26
              accomplished by using pressure regulator. Pressure reduction is not enough. Pressure reduction as well
              as Pressure Regulation is essential. Therefore Pressure Reducing devices cannot be accepted. Pressure
              regulating devices are acceptable. The pressure regulator shall be provided with a built-in safety valve.

              For samples with pressure less than 2 kg/cm2, suitable field mounted pumps shall be provided by buyer to
              ensure sufficient sample pressure, so that the sample reaches the sampling system.

              The pressure regulators shall be furnished for all samples to maintain constant sample flow at a pre-set
              sample pressure. The pressure regulator should ensure that the sample flow does not vary more than 5%
              at low inlet pressure conditions & the sample pressure does not vary more than 5% at low pressure

              Non compliance to any of these criteria automatically disqualifies the vendor.

              The pressure reduction should be achieved by means of a pressure regulator of sufficient capacity which
              will ensure the regulated flow of sample at constant pressure on the downstream side irrespective of
              upstream pressure fluctuations, both for analysers and grab samples. Only pressure reduction is not
              enough. Pressure regulation is a must. The pressure regulating device should be able to provide tight
              shut-off when required. At low pressure & low flow conditions, the pressure regulator should be able to
              maintain the regulated conditions. The pressure regulator selection and location should ensure least
              erosion of components and flashing of steam.

1.02.06       Sample system temperature gauge, pressure gauge and flow indicator

              The temperature gauge shall be 100 mm size, bi-metallic type, The gauge should have all stainless steel
              wetted parts and be hermetically sealed. These gauges should be warranted for at least 5 years for
              trouble free performance.

              The pressure gauge shall be 100 mm dial size with SS casing.

              Sample rate of flow indicator shall be purge type meter with panel mounting bezel and SS float body.

File : SWAS_specs                                                                                           Page 9 of 26
1.02.07       Grab samples

              Grab sample valves shall be arranged to allow grab sample flow to be directed to either a drain header or
              through grab sample nozzles to samples trough. Enough flexible tubing shall be furnished to allow sample
              collection without splashing. A back pressure regulator must be used before the grab sample valve to
              ensure priority flow to analysers in the event of grab sample valve being in fully opened condition.

1.02.08       Sample table

              All steam and water analysers should be installed in a room. The sample conditioning system (i.e.the Wet
              Panel) shall be installed in non-air-conditioned area. There should be a partition in the SWAS room, which
              will separate Wet panel & the Analyser Panel (i.e. the Dry Panel). The Dry panel will be kept in Air-
              conditioned environment. This arrangement would help better maintenance and better control of water

              For measurement of conductivity of condensate water in the hotwell, direct mounting type conductivity
              cells shall be used. For all measurements other than conductivity of condensate water in hot well, sample
              shall be brought to the sample table, where sample shall be cooled and their pressure reduced and flow
              regulated before being led to the respective sensors for analysis of different parameters.

              The core of sampling system is the high pressure sample cooler. One or two high pressure shut off valve
              depending upon sample inlet pressure shall be provided in the sampling line at the inlet of the cooler.
              Another high pressure shut off valve for blowing down the sampling line shall be connected before
              sampling line shut off valves. An indicator shall be provided to measure the temperature of a sample after
              cooler. One signaling contact for alarm and protection (to operate solenoid valves) at high temperature
              shall be provided using a temperature switch.

              This measurement point is to be followed by pressure regulator with built-in safety relief valve, pressure
              gauge and multi valve manifold. This multi valve manifold should have separate outlets leading to
              individual analysers. The flow of sample to individual analysers should be indicated by a flow meter.

File : SWAS_specs                                                                                           Page 10 of 26
              Two numbers of cation exchange columns (one working and one standby) should be provided with manual
              switching for each cation conductivity measurements. Necessary piping etc. from cooling water supply line
              in the filed up to the sampling system will be arranged by Employer. Flow -switch shall be provided for
              signaling loss of cooling water flow at each cooler outlet.

1.03.00       Steam and Water Analysis System (SWAS) Panels

1.03.01       Design Consideration for SWAS Panel and Accessories

              The SWAS Panels shall have two sections namely sample conditioning section and analyser section. The
              first section shall be the wet section of SWAS panels, which shall be called as the "Sample Table". The
              second section shall be the dry section housing the analytical transmitters, signal conditioning devices and
              other requisite accessories.

              All monitoring instruments and controls for sampling system shall be located on the front & shall be
              grouped accordingly to function in a logical and orderly fashion. There shall be a general progression of
              flow from top-to-bottom and left-to-right to minimise sample line length, purge times and material exposed
              to sample. Similarly, the conditioning components for each stream shall be grouped together wherever

              Indicating instruments such as pressure, temperature and flow shall be arranged above the grab sample
              valve. Sufficient clearance shall be maintained between instruments banks of adjacent sample points so
              that there is no confusion in reading these instruments.

1.03.02       General Accessories        i) Automatic temperature
              for SWAS                      compensation in the range
              Sample                        0-100 Deg. C
                                         ii) Cation exchangers (wherever

                                         iii) Flow indicators

File : SWAS_specs                                                                                            Page 11 of 26
                                       iv) Sample coolers

                                       v) Standard solutions like pH etc. and
                                        chemical reagents for 12 months
                                        operation of analysers.

                                       vi) Flow and pressure regulators & gauges

                                       vii) Coolers

                                       viii) SS tubing and fittings within the system

                                       x) Isolation & drain valves as indicated

                                       xi) Other accessories as indicated

                                       xii) Adequate length of cables for connecting
                                          sensors to monitors

                                       xiii) Sample rate set valves within the rotameters

                                       xiv) Alarm settings and Alarm indications on monitors.

                                       xv) Co-axial cable – wherever required

1.03.03       Ease of Maintenance

              Sample conditioning(wet panel) and analyzer panel (dry panel) shall be designed for ready access of
              components. Panel design shall ensure that:-

              a) Parts subject to wear, corrosion or other deterioration or requiring adjustments, inspection or
                 repair are readily accessible and capable of convenient removal, when required.

File : SWAS_specs                                                                                     Page 12 of 26
              b) Individual components or groups of components mounted on sub-panels can be removed for
                 replacement or repair without the need of prior removal of components of other healthy streams.

              c) Flow meters, pressure gauges and temperature indicators can be removed for repair or replacement
                 from the front of the panel without disturbing any piping.

              d) Filter elements and pressure regulators can be easily dis-assembled for periodic cleaning. The general
                 arrangement drawings of panels as well as location and spacing of all instruments and equipment
                 shall be given for buyer’s reference. SWAS panels shall be designed based on human engineering
                 considerations fully keeping in view the convenience of operation and maintenance personnel.

              e) Each sample inlet shall be provided with bulkhead type tubing connection and an isolation valve
                 suitable for sample operating conditions.

              f) A blow down connection and suitable blow down valve shall be furnished upstream of each isolating
                 valve. Blow down valves shall be manifolded into a suitable blow down header.

              g) Strainers, filters, relief valves etc. shall be provided as specified and as required to properly protect the
                 coolers, valves, analyzer elements etc.

              h) All drains shall be piped into two separate drain headers. One header shall be called "Waste Drain
                 Header" and will receive all drains which contain substances not wanted in the plant heat cycle water.
                 The other header shall be called "recoverable drain header" and will receive all other drains not
                 containing unwanted substances. All drains shall be headered as indicated above. Vendor shall pipe
                 the waste drain header to the building drain system.

1.03.04       Constructional Features

              The SWAS panel (wet panel) shall be of open frame free standing type construction. Analyser Panel (Dry
              Panel) shall be of enclosed type construction. The sheet steel used in both these panels shall be 2 mm

              The sample table shall be of free standing, open rack whereas the Dry Panel shall be of free standing,
              totally enclosed construction with back doors.

File : SWAS_specs                                                                                                Page 13 of 26
              All SWAS panels shall be furnished with 100 mm base angle for bolting to 100 mm high concrete curb.

              Following panels are to be supplied under SWAS package:-

              a) Sample conditioning panel (Wet Panel)

              b) Analyzer Panel (Dry Panel)

              The final colour shall be as specified below (or) as may be finally approved:

              Exterior     : RAL 7032

              Interior     : Brilliant white enamel

1.04.00       Piping, Tubing And Accessories

1.04.01       All internal piping, tubing and system components required for making the system complete shall be shop
              installed and tested prior to shipment to project site.

1.04.02       All tubing and wiring shall be located behind the face of the panel with projections allowed only for
              indicator faces, valve handles, manual grab sample lines etc. All the fittings on sample lines in the sample
              conditioning system should be double ferrule compression type. The physical arrangement of the tubing
              and wiring shall, in all cases, be so as to permit easy access for maintenance of all items of equipment.

1.05.00       Material Specifications For Pipe Lines

              The piping to be furnished and installed for water and steam analysis system shall be as indicated below:-

              Piping System                            Material

              1. Sample tubing                         Stainless Steel, ASTM A 213, Type 316 20 SWG tubing

              2. Blow down header                      Stainless Steel, ASTM A 312, Type316, Schedule 80

File : SWAS_specs                                                                                            Page 14 of 26
              3. Various drain &                       Carbon Steel, ASTM
                Cooling water headers                  A 106, Gr.A Schedule 40

The system should be pre-assembled ready for installation at site, except for the analysers.

1.06.00       ANALYSERS

              All the analysers should be sourced from a single vendor under single brand name. Different analysers
              from different sources / makes cannot be accepted as these cause serious after sales support issues. The
              system supplier can give the analyzers from his own manufacturing range of from his joint venture
              partners, with proof of association. All the analyzers should necessarily work with samples at temperatures
              upto 40 - 45°C without chilled water requirement. Vendor to quote only those analysers for which the
              reagents of required purity are available locally. The formulae for preparation of chemical reagents should
              be given along with the offer. All the offered analysers should be micro processor based analysers with a
              facility to programme from the front key pad. Analog instruments cannot be accepted. The system design
              should ensure that the pH and conductivity transmitters are mounted close to the respective sensors. Non
              compliance to any of these criteria automatically disqualifies the vendor.

              Multichannel analyzers are acceptable only for Silica, Sodium & Phosphate measurements, as these
              measurements are more to monitor the trend. In all other measurements, such as Conductivity, pH,
              Dissolved Oxygen & Hydrazine measurements, Single channel analyzers must be offered. Non
              compliance to any of these criteria automatically disqualifies the vendor.

              Silica analyzers must be able to have analysis cycle completed within less than 10 minutes. A grab
              sampling facility is a must with the silica analyzer, as this helps to compare lab readings of a known silica
              solution with the analyzer reading. Silica analyzer should be able to display silica concentration, Alarm
              status, Calibration Constants, channel selection, current outputs, diagnostics, trend curves, historical data.
              In the diagnostics the analyzer should give information such as Lack of Sample / Reagent, Calibration
              solution & Calibration error , hardware failure etc. Non compliance to any of these criteria automatically
              disqualifies the vendor.

File : SWAS_specs                                                                                              Page 15 of 26
              As the SWAS needs expertise in instrumentation as well as thermodynaics/heat engineering/steam etc.,
              vendor should have enough experience both in the fields of Steam engineering as well as control
              instrumentation, with proper tie-ups with reputed world recognised companies & with good R&D support
              especially for Steam Engineering. Companies not having expertise in steam engineering and good R&D
              back up for steam engineering are liable for rejection. Maximum number of components in the system
              should be procured preferably from the in-house sources (such as group companies). This will facilitate
              better control on after sales support activity. Non compliance to any of these criteria automatically
              disqualifies the vendor.

1.06.01       Annual Maintenance Contract

              The vendor must include offer an Annual Maintenance Contract (AMC) for complete maintenance of
              SWAS (including all analyzers as well as Sample Conditioning system) in their proposal. Non compliance
              to this criteria automatically disqualifies the vendor.

1.06.02       Technical Specifications of Conductivity Analyser

                    Measuring range No           Measuring range                      Resolution
                             1                 0.000 - 2.000 µS/cm                  0.001 µS/cm
                             2                  0.00 - 20.00 µS/cm                   0.01 µS/cm
                             3                  0.0 - 200.0 µS/cm                     0.1 µS/cm
                             4                    0- 2000 µS/cm                        1 µS/cm
                             5                 0.00 - 20.00 mS/cm                    0.01 mS/cm
                             6                  0.0 - 200.0 mS/cm                     0.1 mS/cm
                             7                    0 - 1000 mS/cm                       1 mS/cm
                     Relative accuracy     ± 1% of full scale reading (±2 % >500 mS/cm)
                     System accuracy       The effective measuring range and the total system accuracy
                                           depend on the sensor used with the transmitter. Please refer
                                           to the respective sensor documentation.
                             Temperature                   -10.0 to + 125.0 °C (14.0 to 257.0 °F)
                              Resolution                   0.1 °C / °F
                           Relative Accuracy               ± 0.5 °C (± 1.0 °F)
                                Sensor                     Pt100 /Pt1000 (jumper selectable)

File : SWAS_specs                                                                                         Page 16 of 26
                     Temperature Compensation           Auto / manual (reference at 25 °C)

              Set-point and Controller Functions
               Function (switchable)                  limit control
                                                      P/PI control (pulse length/pulse frequency)
               Integral time                          0 to 999.9 minutes
               Adjustable period with pulse length 0.5 to 20 sec.
               Adjustable period with pulse frequency 60 to 120 pulses/min
               Pickup / Dropout delay                 0 to 2000 seconds
               Wash cycle (If required-optional)      0.1 to 199.9 hours
               Wash duration (If required-optional)   1 to 1999 seconds
               Switching conductivity hysteresis      0 to 10 % of full scale
               Contact outputs, controller            1 SPDT, 3 SPST relays
               Switching voltage                      max. 250 VAC
               Switching current                      max. 3A
               Switching power                        max. 600 VA

              Alarm Functions
               Function (switchable)                    Latching / pulse
               Pickup delay                             0 to 2000 seconds
               Switching voltage                        Max. 250 VAC
               Switching current                        Max. 3A
               Switching power                          Max. 600 VA

               LCD                                      UV coat, backlit 14 segments display with
                                                        symbols for status information
               Backlight                                On/Off selectable with four level of brightness

              Electromagnetic Compliance (EMC) Specifications
               Emitted Interference                     EN 61 326
               Immunity to Interference                 EN 61 326

File : SWAS_specs                                                                                         Page 17 of 26
              Environmental Conditions
               Ambient temperature operating range      0 to 40 °C
               Maximum Relative humidity                80% up to 31°C decreasing linearly to 50% at

              Power Supply
               Input                                    80 to 250 VAC/DC 50/60 Hz Approx. 10VA
               Main Fuse                                250 mA anti-surge, S504 BUSSMANN
               Pollution Degree                         2
               Transient Overvoltage category           II

              Electrical Data and Connections
               Signal Output                            Two 0/4 to 20 mA outputs for conductivity and
                                                        temperature, galvanically isolated.
               Load                                     Max. 600 Ω
               Conductivity input                       Screw terminal
               Connection terminal                      5-pin, 9-pin, and 19-pin terminal blocks

              Mechanical Specifications
               Dimensions                               175 x 96 x 96 mm (6.89 x 3.78 x 3.78 inch)
               Weight                                   700 g
               Material                                 ABS
               Insulation                               IP 54 (front) / IP 40 (housing)

1.07.0        Technical Specification Of pH Cell And Transmitters

                    pH Controller / Transmitter
                    pH Range                         2.00 to 12.00 pH

File : SWAS_specs                                                                                       Page 18 of 26
                    Resolution & Accuracy                  0.01 pH & ± 0.01 pH
                    mV Range                               0 to 100% or -1000 to 1000 mV
                    Resolution & Accuracy                  0.1% or 1 mV / ± 1 mV
                    Temperature                            -9.9 to 125 oC (15.0 to 257.0 oF)
                    Resolution & Accuracy                  0.1 & ± 0.5 oC (± 1.0 oF)
                    Sensor                                 Pt 1000 or Pt 100 (jumper selectable)
                    Temperature Compensation               Automatic (± 10 oC / ± 18 oF offset adjustment) / Manual

                    Set-point And Controller Functions
                    Function                             Limit / Proportional Control / Proportional Integral
                                                         (Pulse Length or Pulse Frequency)
                    Integral time                        999.9 minutes
                    Pickup / Dropout Delay               0 to 1999 seconds
                    Wash Cycle (If required-optional)    0.1 to 199.9 hours
                    Wash Duration (If required-optional) 1 to 1999 seconds
                    Switching pH Hysteresis              0.1 to 1 pH
                    Switching ORP Hysteresis             1 to 10.0 % / 10 to 100 mV
                    Contact Outputs, Controller          1 SPDT; 3 SPST relays
                    Switching Voltage/Current/Power      Max 250 VAC / Max 3A / Max 600 VA

                    Alarm Functions
                    Function (switchable)                 Latching / pulse
                    Pickup delay                          0 to 1999 seconds
                    Switching Voltage/Current/Power       Max 250 VAC / Max 3A / Max 600 VA

                    LCD                                   UV coat, backlit 14 segments display with symbols for
                                                          status information
                    Backlight                             On/Off selection with four level of brightness control

File : SWAS_specs                                                                                                     Page 19 of 26
                    EMC Specifications
                    Emissions                       According to EN 50081-1
                    Susceptibility                  According to EN 50082-1

                    Environmental Conditions
                    Ambient Temp. Operating Range   -10 to 50 oC (14 to 122 oF)
                    Rel. Humidity                   10 to 95% (non-condensing)

File : SWAS_specs                                                                 Page 20 of 26
                    Electrical Data And Connections
                    Power requirements                80 to 250 V AC/DC
                    Frequency                         48 to 62 Hz
                    Signal output                     Two /4 to 20 mA outputs for pH/mv and temperature ,
                                                      galvanically isolated
                    Load                              Max.600 Ω
                    pH / ORP Input                    BNC (1012 Impedance)
                    Connection terminal                (1 x 3-pin; 1 x 9-pin & 1 x 19-pin terminal blocks)
                    Main fuse                         250 mA, anti-surge
                    Mechanical Specifications
                    Dimensions (W x H x D)            175 x 96 x 96 mm Panel Mount
                    Weight                            700g (unit); 950g (boxed)
                    Material                          ABS
                    Insulation                         IP 54 (front) , IP 40 (housing)

File : SWAS_specs                                                                                            Page 21 of 26
1.08.0         Technical Specification of Silica Analyzer (Si O2)

     SPECIFICATION NO.                DATA SHEET                                          SH 1 OF 2
     POLY / 9210 / 00 / 01            SILICA ANALYSER
1.0         GENERAL
1.1         TAG.NO.
1.2         QUANTITY
1.3         SERVICE
1.4         MANUFACTURER]
1.5         MODEL NO.
2.0         SENSOR
2.1         METHOD                         Photometric Silico Molybdene Blue color
2.2         LIGHT SOURCE                   Single beam Infrared LED at 820 nm and reference beam
2.3         CYCLE TIME                     9 min including 2 flush cycles
2.4*        RANGE (Tick where              0-1000 ppb  0-5000 ppb  Freely Programmable
            appropriate in the box)
2.5         CALIBRATION                    2 point - zero & Slope. Manual/Automatic
2.6         CALIBRATION CYCLE              1...240 hrs programmable
2.7         FLOW CELL                      Acrylic unit, Conical design bubble expelling
2.8*        CHANNELS (Tick where           Built-in - 1  2  3  4  5  6 
            appropriate in the box)        Programmable sequence and range of each channel

3.1        TEMPERATURE                     +5.....+50 deg C
3.2        PRESSURE                        0.2..... 2 bar
3.3        FLOW RATE                       15-20 Lph

File : SWAS_specs                                                                                     Page 22 of 26
       SPECIFICATION NO.                                  DATA SHEET                                                 SH 2 OF 2
       POLY / 8891 / 00 / 01                              SILICA ANALYSER
4.0           TRANSMITTER
4.1           TYPE                                               Microprocessor based
4.2           DISPLAY TYPE                                       Backlit LCD matrix, menu operated ,
4.3           DISPLAY DETAILS                                    Conc., Alarm status, Calibration Constants, channel selection, current outputs, diagnostics, trend
                                                                 curves, historical data
4.4               DIAGNOSTICS                                    Lack of Sample, Reagent, Cal solution & Calibration error , hardware failure
4.5*              MOUNTING (Tick where                           Panel  Free standing 
                  appropriate in the box)                        Dimensions : 600 w x 1800 h x 500 d mm
4.6               OUTPUT                                         6x 0/4-20mA, DC, galvanically isolated, (1 per channel)
4.7               ENCLOSURE MATERIAL                             Stove enameled steel
4.8               ENCLOSURE                                      IP 55, Transmitter IP 65
4.9               RELAY OUTPUTS                                  6x Sample limit & 2x System (no sample, no reagent, cal error), isolated NO, 3A 250VAC
4.10              LEVEL SENSORS                                  IR sensors for sample, reagent, cal. Soln.
4.11*             DIGITAL INTERFACE (Tick                        RS 232, RS 422 9600 Baud (optional)
                  where appropriate in the                       Included  Not Included 
4.12              ELECTROMAGNETIC                                As per European Directives
4.13              GRAB SAMPLE ANALYSIS                           Facility available
4.14              POWER SUPPLY                                   220 VAC or 240 VAC + 15% 50 Hz or 110 VAC + 15% 50/60 Hz, Please Indicate
5.0               REAGENTS                                        1)    Ammonium Heptamolybdate
                                                                  2)    Oxalic Acid
                                                                  3)    Ferrous Ammonium Sulphate
                                                                  4)    Sodium Hexa FluoroSilicate (Standard)
                                                                  5)    Ammonium Hydroxide
                                                                  6)    Sulphuric Acid
REF                                                              CLIENT
DATE                                                             PROJECT
      Note : Please indicate the appropriate option by ticking at appropriate place

File : SWAS_specs                                                                                                                                      Page 23 of 26
     Minimum two flush cycles to avoid contamination of two different channels
     All reagents are available locally. Detail procedure of preparing reagents is given in manual

1.09.0                Technical Specification of Dissolved Oxygen Analyzer

      SPECIFICATION NO.                         DATA SHEET                                            SH 1 OF 2
       POLY/9182/00/12                    DISSOLVED OXYGEN ANALYSER
1.0           GENERAL
1.1           TAG.NO.
1.2           QUANTITY
1.3           SERVICE
1.4           MANUFACTURER
1.5           MODEL NO.
2.0           SENSOR
2.1           TYPE                                              Clark Polarographic
2.2           ELECTRODE MATERIALS                               Encapsulated Gold Cathode and Silver Anode
2.3           ELECTROLYTE                                       Potassium Bromide
2.4           MEMBRANE                                          PFA
2.5           SENSOR BODY                                       Noryl
2.6           TEMPERATURE                                       Manual/Automatic, through built-in temperature sensor
2.7           RANGE                                             0 - 2000 ppb, freely programmable
2.8           CALIBRATION                                       1 / 2 point Zero & Slope -Chemical or Electrical
3.1           TEMPERATURE                                       0 .....+45 deg C
3.2           PRESSURE                                          atm.
3.3           FLOW RATE                                         4.... 10 lph
4.0           TRANSMITTER
4.1           TYPE                                              Microprocessor based
4.2           DISPLAY TYPE                                      Indicating 4 digit 34x 67.4 mm display
4.3           DISPLAY DETAILS                                   Concentration, alarm status, diagnostics, cal. Constants, current outputs

File : SWAS_specs                                                                                                                           Page 24 of 26
      SPECIFICATION NO.                      DATA SHEET                                SH 2 OF 2
       POLY/9182/00/12                DISSOLVED OXYGEN ANALYSER
4.4          MOUNTING                                     Universal - Panel / wall / pipe
4.5          CURRENT OUTPUT                               2 x 0/4-20mA, DC, galvanically isolated
4.6          ENCLOSURE MATERIAL                           Polyester coated aluminum
4.7          ENCLOSURE PROTECTION                         IP65 /NEMA 4
4.8          RELAYS                                       2 x high/low set point
                                                          1 x system alarm or high/low set point
                                                          1 x timer or high/low set point
4.9          DIMENSIONS                                   144 x 144 x 150 mm
4.10         POWER SUPPLY                                 Universal self adapting 90....265 VAC 50/60 Hz
4.11         DIAGNOSTICS                                  High cell current, High/low sample temp., high/low ambient temp., zero/slope calibration error
4.12*        DIGITAL INTERFACE (Tick                      RS-485, baud rate 300...9600 (optional)
             where appropriate in the box)                Included  Not included 
4.13         ELECTROMAGNETIC                              As per European standards
REF                                                       CLIENT
DATE                                                      PROJECT

     Note : Please indicate the appropriate option by ticking at appropriate place
     Membranes should be pre-mounted on cap for easy and fast replacement.

File : SWAS_specs                                                                                                                               Page 25 of 26
1.10.0        Technical Specification of Hydrazine Analyzer

      SPECIFICATION NO.              DATA SHEET                                              SH 1 OF 2
       POLY/9186/00/09             HYDRAZINE ANALYSER
1.0       GENERAL
1.1       TAG.NO.
1.2       QUANTITY
1.3       SERVICE
1.5       MODEL NO.
2.0       SENSOR
2.1       METHOD                         Amperometric
2.2       ELECTRODES                     Platinum anode, Stainless steel cathode, Ag/AgCl reference electrode
2.3       CELL MATERIAL                  Acrylic
2.4       RANGE                          0... 500 ppb, freely programmable
2.5       CALIBRATION                    1 / 2 point zero and slope, chemically or electronically
3.1       TEMPERATURE                    +5.....+45 deg C
3.2       PRESSURE                       0.5..... 6 bar
3.3       FLOW RATE                      10-15 Lph
4.1       TYPE                           Microprocessor based
4.2       DISPLAY TYPE                   4 digit, 34 x 67.4 mm backlit LCD matrix
4.3       DISPLAY DETAILS                Concentration, Sample temp., Alarm status, Diagnostics, Cal. Constants, Current Outputs
4.4       MOUNTING                       Panel mounted

File : SWAS_specs                                                                                                          Page 26 of 26
     SPECIFICATION NO.                   DATA SHEET                                             SH 2 OF 2
      POLY/9186/00/09                  HYDRAZINE ANALYSER
4.5      ANALOG OUTPUT                     2 x 0/4-20mA, DC, galvanically isolated
4.6      TEMPERATURE                       Manual/Automatic, through built-in temperature sensor.
4.7      ENCLOSURE MATERIAL                Polyester coated aluminum
4.8      ENCLOSURE PROTECTION              IP 65/ NEMA 4
4.9      RELAY OUTPUTS                     2 nos limit alarm, 1 no system alarm, 1 timer alarm, 3A 250VAC rating
4.10     DIGITAL INTERFACE (Tick           RS 485, Programmable baud rate (optional)
         where appropriate in the box)     Included  Not included 
4.11     POWER SUPPLY                      Self adapting 90...265 VAC, 50/60 Hz
4.12     DIAGNOSTICS                       High/low cell current, High/low sample temperature, Zero/slope calibration error.
4.13     ELECTROMAGNETIC                   As per European directives
5.0      REAGENTS                          1) Ammonia solution
                                           2) Hydrazine lab. standard
REF                                        CLIENT
DATE                                       PROJECT

File : SWAS_specs                                                                                                              Page 27 of 26

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