PRODUCT INFORMATION
K22 Carbon Dioxide Sensor Module
Features: Applications:
* Pre-calibrated and ready to use * Fresh air ventilators
* Compact size * Air conditioners
* Low cost * Commercial and automotive air cleaners
* Maintenance-free * Automatic fans and window openers
* RoHS compliant * Combustion controls
The K22 Carbon Dioxide Sensor Module is a low cost,
maintenance-free infrared transmitter module which is intended
to be built into host devices that require CO2 monitoring data.
The K22 is targeted for high volume production. For a moderate
start-up cost, Figaro can provide tailor-made products in order
to meet a user's unique requests.
The patented state-of-the-art, infrared (NDIR) wave-guide
technology of K22 is comprised of a unique folded-path optical
sensor. This feature provides an unbeatable path length, ensuring
excellent accuracy and long-term stability.
The K22 is an accurate, yet low cost gas sensing solution for
OEMs who wish to integrate CO2 gas sensing into their product
without investing in their own gas sensor development. This
compact-sized and low-power module is intended to be an add-on
component to compliment other microprocessor-based controls
and equipment.
The K22 is offered for installation in OEM IAQ sensor housings,
OEM air handling units, OEM alarm sensor housings, among
other applications. The only restriction on usage of this product
is the creativity and inventiveness of the user.
For information on warranty, please refer to
Standard Terms and Conditions of Sale of Figaro
K22 is available in three distinct version depending on the type
USA Inc.
of output generated: K22 LO (linear analog output), K22 OC
(open collector output), K22 PWM (open collector output with FIGARO USA, INC.
121 S. Wilke Rd. Suite 300
pulse width modulation).
Arlington Heights, IL 60005
Phone: (847)-832-1701
Fax: (847)-832-1705
email: figarousa@figarosensor.com
Specifications
Specification
Category Item
K22 LO K22OC K22 PWM
Open collector: Open collector w/pulse
Output Signal Signal Linear output 0~5V
open>800ppm, closed 15 years
Emissions: EN61000-6-3:2007
General Performance Conformance with Standards Immunity: EN61000-6-1:2007
RoHS directive 2002/95/EG
Operating Temperature 0 ~ 50˚C
Operating Humidity 0 ~ 95%RH (non-condensing)
4.5-12V DC Max (Note 3), without reverse polrity protection, stabilized to ±5%
Power Input
over line and load changes. Ripple voltage 2 sec.
Repeatability ±40ppm ±1% of measured value
Accuracy (note 1,7) ±75ppm ±3% of measured value
Pressure Dependency +1.6% reading per kPa deviation from normal pressure of 100kPa
Note 1: In normal IAQ applications, accuracy is defined after a minimum 3 weeks of continuous operation. However, some
industrial applications do require maintenance. Please contact Figaro for further information.
Note 2: At sea level altitudes and normal pressures
Note 3: Notice that absolute maximum rating is 12V, so that sensor cannot be used with a 12V±5% supply voltage.
Note 4: "Mechanical conditions in road vehicles in areas without well-developed rod systems, light-weight vehicles, tracked vehicles, and
self propelled machines, including installation in places which maybe hit dircetly by flying stones"
Note 5: “Transportation in lorries, trailers and all other kinds of transportation in areas without well-developed road systems, by trains
with shock reducing buffers and by ships”
Note 6: “Instrumentation and automation equipment on ships”
Note 7: Accuracy is specified over the operating temperature range at normal pressure of 1013NBar. The specification is referenced
to certified calbration mixtures. Uncertainty in calibration gas mixtures (±2% currently) should be added to specified
accuracy for absolute measurements.
REV: 08/10