The CMT76 CO sensor uses the electrochemical principle to detect carbon monoxide in the air, offering good selectivity and stability. It provides three selectable output options: current, voltage, and RS485. The carbon monoxide sensor supports a wide input voltage range and features built‑in power supply reverse‑connection protection. Ideal for indoor air quality monitoring, HVAC systems, air purifiers, underground parking garages, and other CO detection applications.
Multiple signal output options – Compatible with a wide range of control equipment, making it an ideal industrial CO sensor for flexible system integration.
Long‑term reliability – Up to 5 years of service life, backed by the proven stability of an electrochemical carbon monoxide sensor.
Rugged environmental protection – IP6X rated (dust‑tight), suitable for demanding CO sensor HVAC applications such as air handlers, ventilation controls, and parking garages.
| Measured concentration | 0-500ppm/0-1000ppm | |||
| Response time(T90) | ≤15s | |||
| Accuracy | ±5%F.S@25℃ | |||
| Service life | >5 years | |||
| Operating conditions | ||||
| Temperature | Working: -10...+50℃[+14.-122°F] | |||
| Working humidity | 15%...90%RH | |||
| Work pressure | 1atm(Standard Atmospheric Pressure)±10% | |||
| IP grade | IP6x | |||
| Electrical overview | ||||
| Electrical properties | 3-wired | 4-wired | ||
| Output signal | 4..20mA | 0..5V | 0...10V | RS485 |
| Working voltage | 10...30VDC | 10..30VDC | 16...30VDC | 10..30VDC |
| Wiring instructions | ||||
| RS485 digital output type wiring | ||||
| Power supply | Red | Positive power | ||
| Black | Negative power | |||
| Communication | Green | 485-A | ||
| White | 485-B | |||
| Voltage/Current analog output type wiring | ||||
| Power supply | Red | Positive power | ||
| Black | Negative power | |||
| Communication | Green | Voltage/Current output Positive | ||
| White | Voltage/Current output negative | |||
