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Airtest TR9290-B (0-10V & 4-20mA)
Airtest TR9290-B – Wall Mount, 0-10V & 4-20mA, No Display (3 X 3.5 Enclosure)
ALL AIRTEST GAS SENSORS ARE PRECALIBRATED AT THE FACTORY. NO ADDITIONAL CALIBRATION IS REQUIRED.
- Internal self-calibration method based on background measurement also eliminates need for outdoor CO2
- Choice of outputs: 0-10V, 0-5V or 4-20mA and
- Built to ISO 9001 standards
- Mounting options include wall, duct and in-duct.
- Utilizes a proven infrared measurement technology with over 17 years of flawless operating history.
- LonWorks not Available for TR9290 or TR9291
The TR9290 family of sensors is designed to be self calibrating and should require no maintenance over the sensor life which is typically 15 to 20 years. The reason for this remarkable stability is due to a number of design features integrated into the CO2 transmitter. Extended Sample Path Length: The AirTest infrared sensor incorporates a unique, patented, oval design. All competitive sensors use a straight path of infrared energy shining through an air sample to measure CO2. The amount of gas that can be sampled, called the “path length” is limited by the size constraints of their wall-mounted and duct-mounted cases used. The AirTest design, using a similar sized case, provides over double the path length of any other CO2 sensor (4.8”) by bouncing the light around the small oval sensor element. Longer path length means that a larger sample of air is measured. In technical terms this results in an increased signal-to-noise ratio. This means that the AirTest ensor performs better at long-term sensor stability and accuracy than other devices. Greater dependability is the ultimate result.
CO2 Detection Method: Gold Plated NonDispersive Infrared Optical Sensor with Automatic
Baseline Correction for Self-Calibration, 4.8” optical path length, diffusion sampling.
Certification: CE, EMC89/336/EEC, CA Energy
Commission, NYSERDA, LonMark® Certifed (V3.4).
Transmitter Rated Life: 15 years
Operating Conditions: 32 to 122º F (0 to 50ºC), 0 to 95% RH
Storage Conditions: -40 to 158º F (-40 to 70º C)
CO2 Measurement Range: 0-2000 ppm (factory adjustable to 10,000 ppm upon request),
CO2 Accuracy: +/- 1% of measurement range +/- 3% of measured value.
Calibration: Self Calibrating, Calibration Not Required
Response Time: T90 = <2 minutes (diffusion), <15 seconds for flow through.
Input: 24 VAC/VDC ±20%, 50-60 hz (halfwave rectified)
Average Power Consumption: < 1 Watt average
Ground: Analog output transmitters must share common ground with control system.
Linear Analog Output: Two simultaneous dual output options available: A) 0-5V & 4-20mA, B) 0-10V & 4-20mA
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