Ventilation is an important part of maintaining a comfortable, healthy, productive environment for people. Improper ventilation can have a negative impact on occupant health and performance, increase the risk from litigation, and/or waste energy. Demand-controlled ventilation using CO2 Transmitters prevents energy losses from over-ventilation while maintaining indoor air quality. The most energy savings potential is in buildings where occupancy fluctuates during a 24-hour period. Numerous organizations now require and/or recommend CO2-based ventilation control in different commercial HVAC applications. Some utility companies also offer rebates to building owners for installing CO2 Transmitters.

Wall mount Transmitters are used to control a specific area such as a conference room, classroom, meeting hall, etc. The Telaire T8200-D-GN Ventostat series are easy to install and have a clean, modern look that suits most indoor environments.

GE Telaire Ventostat T8200-D-GN CO2 duct mount Transmitter uses a dual-channel optical system and three-point calibration process for enhanced stability, accuracy and reliability. Used in applications where there is full-time occupation 24 hours a day.

Dual Channel Transmitter

The GE Telaire T8200-D-GN dual channel Transmitter can be described as a CO2 channel that measures gas concentration and a reference channel that measures the Transmitter signal intensity. The dual channel Transmitter performs periodic self-calibrations using the reference channel. The self-calibrations are approximately every 24 hours. During the self-calibration the Transmitter ppm reading is frozen, it will not react to changing CO2. The calibration time is adjustable but nominally two minutes.

GE recommends periodic gas calibration depending on the application accuracy requirements. While the reference channel corrects for changes over time, a field calibration using nitrogen gas or alternatively ambient calibration will immediately restore the highest level of accuracy.