The CO2 equivalent (CO2e) units combine the benefits of VOC sensors and the common application of CO2 sensors into one unit. It provides a VOC reading that correlates to a typical indoor CO2 level of 0 to 2,000 ppm. This allows the sensor’s output to be used for ASHRAE’s CO2-based VRP ventilation schedule.
The total VOC (TVOC) units provide a VOC reading that is the total concentration of all VOCs present in the space within a range of 0 to 2,500 ppb. This is often needed to meet 3rd party building certifications that require separate CO2 and VOC readings.
Additional information on VOCs and using the CO2e units in your ventilation strategy is available on our website and in the Air Quality section of our catalog.
The Duct unit uses an aspiration tube, while the Rough Service unit uses a ventilated BAPI-Box and is ideal for areas such as outdoor air plenums, equipment rooms, green houses and warehouses.
Power: (Half-wave rectified)
12 to 24 VDC, 35 mA max
18 to 24 VAC, 4 VAmax
CO2e Unit Detection Range:
0 to 2,000 ppm CO2 equivalent
TVOC Unit Detection Range:
0 to 2,500 ppb
Micro-machined metal oxide
<60 sec (after start-up time)
0 to 5 or 0 to 10 VDC > 10KΩ impedance
3 wires, 16 to 22 AWG
Cover LEDs for CO2e Models
(not available on TVOC Models):
Good, Green < 1,000 PPM
Fair, Yellow = 1,000 to 1,500 PPM
Poor, Red > 1,500 PPM
32 to 122°F (0 to 50°C)
5 to 95%RH non-condensing
UV-Resistant Polycarbonate, UL94, V-0
CE EN 61326-1:2013 EMC, UL, RoHS