Art no: 1134

CO2 Sensor Mk9

Art no: 1134

Mk9 CO2 Sensor
LogiCO2´s Mk9 CO2 Sensor measures the CO2 concentration and alerts in the event that CO2 concentration reaches the pre-set alarm levels. When installed, the system will continuously monitor the CO2 concentration in the room or area where the CO2 sensor is located.

The Mk9 CO2 Sensor uses IR technology to measure the CO2 concentration and communicates with MODBUS. It can be used as a stand alone unit, connected to the LogiCO2
Central Unit or be used as a sensor in a larger computerised monitoring system. A separate electronic transformer supplies 24 V power to the system. The system monitors STEL as well as TWA levels of CO2. The system also provides visible indication of CO2 levels and temperature in the area where the remote sensor is located. The CO2 Sensor performs a self-calibration at regular intervals ensuring calibration under normal circumstances. This eliminates the need of manual service calibration in most normal enviroments.

The alarm levels can be changed to any level to comply with relevant standards or policy. All LogiCO2 sensors are automatically calibrated by the “ABC Algorithm”.

The pre-set alarm levels are:
– 5.000 ppm instantaneous Alert
– 5000 ppm TWA 8Hr (PEL)
– 1,5% (15.000 ppm) ½ STEL
– 3,0% (30.000 ppm) STEL

What is in the package?
CO2 Mk9 detector


CO2 Sensor MK9
Power supply: 24V DC
Power consumption: < 300 mA (external optional warning lamp not included)
Wiring connections: RJ 45
Digital interface: RS485 serial port MODBUS
Outputs: 2 x transistor output 24V DC, Min 1 mA
Acoustic signal-strength: 85 dBa (1 m) max.
Operating principle: Non-dispersive infrared (NDIR) and thermistor
CO2 measuring range: 0-3 Vol.%
Extended CO2 range: 3-6,7 Vol.%
Gas sampling mode: Diffusion
TWA (Time Weighted Average): Calculation 8 h time span (most recent)
with 2 min sample period. (Pat. Pend.)
Resolution: 0.01 Vol.%
Annual zero point drift: <0.01 Vol.% with automatic self calibration feature Ambient temperature: -20 to +50°C (-4 to +122°F). Only for indoor use. General performance Compliance with: 2004/108/EG Sensor Life expectancy: > 15 years
Operating humidity range: 0 to 95% RH (non condensing)
Warm-up time (@ 22°C): 1 min.
Dimensions (Ø and H): Ø 90 mm, height 120 mm / Ø 3,5”, height 4,7”
Ingress protection: IP54
Overvoltage: Category II
Pollution degree: II

Manuals & instructions
Other languages

Mk9 tutorial (English)

Mk9 tutorial (Spanish)

Mk9 tutorial (German)

Mk9 tutorial (French)

Mk9 tutorial (Chinese)