The A/CO transmitters monitor carbon monoxide (CO) levels in industrial environments. The A/CO transmitters are intended to be used for the continuous monitoring of vehicle exhaust in non-hazardous areas. Guidelines provided by OSHA and the UL2034 STD rating state that current danger levels are 50 ppm on a Time Weighted Average over an 8 hour Period or 35 Minutes at a 200 ppm level. Indoor concentrations above 35 ppm indicate the need for additional ventilation.
The A/CO uses a wide spectrum, long life electrochemical sensor to measure the amount of carbon monoxide in the environment. It is offered with an operating range of 0 to 125 ppm. The carbon monoxide transmitter provides a linear 4 to 20 mA or 2 to 10 VDC output on a 4-wire system when using an AC or DC supply voltage to power the transmitter.
Both the Room and Duct CO transmitters are offered in a standard NEMA 1 rated ABS Polycarbonate plastic enclosure. An optional NEMA 4X watertight and dust proof enclosure is only available with the CO room transmitter. Other options include an LCD display with (2) SPDT Form 1C relays and a buzzer.