CO2 sensor transmitter 4-20mA

Features

B40 CO2 Non-dispersive infrared carbon dioxide transmitters. Designed to measure environmental carbon dioxide levels in ventilation systems and indoor living spaces in compliance with ASHRAE and other ventilation efficiency standards. They include a relay output that can be configured to open or close above a user adjustable setpoint. An optional LED display is available to indicate concentrations at the unit.
B40 packaged in a compact attractive enclosure. Isolated power terminals and a fully floating analog output simplify installation. The analog output is jumper-selectable for either 4-20 mA or 0-10 VDC. Factory Calibrated

Specifications
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24 VAC or 24 VDC power, Less than 2.5 W @ 24 VAC
0-10 VDC or 4-20 mA analog output, jumper-selectable
0-2000 ppm CO2 range
Operating element Nondispersive infrared (NDIR)
Wall mount and duct sampling versions
Electrically isolated output and power
Compact attractive enclosure
Alarm relay with field-adjustable setpoint
Simple single point calibration
LCD display CD A
Operating temperature 22° to 140°F (-30° to 60°C)
Operating humidity 0-90% RH noncondensing
Operating life expectancy 10 years typical
Recommended calibration Three years
Warranty 18 months