GE Telaire Ventostat T8041
CO₂ Duct Probe Transmitter

Simple installation (mounting hardware and instructions included)
Ideally suited for larger HVAC return air ducts
Offers standard 0-10 volt output
Patented absorption infrared/gas sensing engine provides high accuracy in a compact low-cost package
Patented ABC Logic™ self-calibration system eliminates the need for manual calibration in most applications
Gas permeable, water resistant diffusion filter prevents particulate and water contamination of the sensor
Lifetime calibration guarantee.

GE Telaire T8041 Shown

Product Information
Datasheet	1.6 MB
CO2 Guide	54 kB
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GE Sensing Ventostat T8041 CO2 Duct Probe Transmitter is excited to announce the release of a new generation of Ventostat Carbon Dioxide transmitters targeting indoor air quality and energy conservation applications. The Ventostat 8041 duct mount Carbon Dioxide transmitter offers accuracy and versatility at an affordable price. This exceptional product line touts an unobtrusive form factor that is easy to install, simple to use, and remains accurate over the expected life of the device using Telaire’s patented ABC Logic™ (Automatic Background Calibration) technology.

Application
Ventostat T8041 CO2 transmitters can be used in a broad range of applications including air quality monitoring in buildings. Carbon Dioxide concentration levels in buildings are monitored to provide an indication of occupancy and to drive a ventilation control strategy. An effective DCV (Demand Controlled Ventilation) strategy will conserve energy and maintain indoor air quality.

Technology
The technology in the Telaire T8041 is based on the absorption of light in a gold-plated reflective light pipe or waveguide diffusion gas chamber. A gas permeable PTFE filter prevents particulate and water contamination of the sensor. Light is absorbed in proportion to the CO2concentration and the remaining light is measured and converted into an analog signal.

Features		Description
Measurement Range		0-2000 PPM factory calibrated
Duct Air Velocity		0 to 1500 ft/min (0 to 450 meter/min)
Temp Dependence		0.2% of full scale per ºC
Stability		<2% of full scale over the life of the sensor (15 years typical)
Accuracy		±40 ppm +3% of reading @ 22ºC (72ºF) when compared with a factory certified reference
		GE Telaire's product line offers patented ABC Logic™ software for self-correction of drift to better than ±20 ppm per year. The system is virtually free of maintenance and typically has a lifetime of more than 10 years.
Non-linearity		<1% of full scale @ 22ºC (72ºF)
Pressure Dependence		0.13% of reading per mm of mercury
Calibration		Sensors will be calibrated at zero and span at the factory. Calibration in the field will not be required. Sensors will be shipped with ABC Logic™ turned on.
Response Time		Three minutes typical for a 90% step change at low duct speeds
Sampling Rate		Every two seconds, 25% duty cycle
Warm-up Time		< two minutes (operational); 10 minutes to achieve maximum accuracy
Operating Conditions	Temperature	0ºC to 50ºC (32ºF to 122ºF)
	Humidity	0 to 95% relative humidity, non-condensing
Storage Conditions		-20ºC to 70ºC (-40ºF to 158ºF)
Output		Analog 0 to 10 VDC (100 ohm output impedance)
Power Supply Requirements		18 to 30 VAC RMS, 50/60 Hz or 18 to 42 VDC, polarity protected.
Power Consumption		Typical values (1.65 watts peak, 0.65 watts avg. @ 42 VDC)
Physical Requirements	Probe Length	4.12 in (10.46 cm)
	Probe Diam	1.24 in (3.14 cm)
	Junction Box Depth	1.6 in (4.06 cm)
	Height	3 in square approximately(7.62 cm)
	Color	Grey (6Y6275)
	Flammability Classification	UL 94V-5

Ordering Information
Model	Description	Buy Online	Price
8041	Telaire 8041 Ventostat Duct Probe CO2 Transmitter (no display)		$287.37

GE Telaire Ventostat T8041 CO2 Duct Probe Transmitter

GE Telaire Ventostat T8041
CO₂ Duct Probe Transmitter