
- Measurement Range: Monitors real-time CO2 concentrations from 0.0% to 6.7%.
- Multi-Data Display: Digital interface alternates between actual CO2 %, Time Weighted Average (TWA) in ppm, and ambient temperature (°C/°F).
- System Scalability: Central Unit supports the integration of up to twelve (12) independent Mk9 sensors for multi-zone monitoring.
- Calibration: Features factory-standard automatic self-calibration for long-term sensor accuracy and reduced maintenance.
- Field-Adjustable Alarms: User-configurable alarm set-points to ensure compliance with localized safety codes, OSHA, and EH40 legislation.
- Output Components: Includes high-decibel acoustical horn and high-visibility optical strobe for immediate hazard notification.
- Interface Type: Plug-and-play architecture utilizing pre-terminated cabling for rapid field deployment.
- Legacy Compatibility: Official successor/replacement for the LogiCO2 MkVII CO2 Sensor System.
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The Mk9 CO2 sensor is the latest generation of CO2 Safety Systems and has replaced the LogiCO2 MkVII CO2 Sensor System. A large display, functional design and revolutionary language functionalities are some of the new features of the MK9 CO2 Safety System. The display alternates between actual CO2 concentration (0.0%- 6,7%), TWA (ppm) and temperature (°C or°F), (if temperature alarm is activated for cold room applications).
This complete plug and play SET contains a Mk9 CO2 Sensor with display, a Mk9 Central Unit to display the measured values, a Horn/strobe, cabling and signage. Up to twelve sensors can be connected to the Mk9 CO2 Safety Detector SET, providing a sophisticated and powerful CO2 Safety System while still being the most economical and easiest system on the market. All LogiCO2 sensors have automatically calibration as standard. The alarm levels can be changed to any level to comply with all local Safety Codes and legislation.
Technical Data: Mk9 CO2 Sensor
| Specification | Details |
|---|---|
| Power Consumption | No alarm: 56 mA | Alarm status: 68 mA |
| Wiring Connections | RJ45 |
| Digital Interface | RS485 Serial Port MODBUS |
| Outputs | 2 x Transistor Output 24V DC (Min 1 mA) |
| Display Type | LCD |
| Acoustic Signal | 76 dBa (1m) max. |
| Operating Principle | Non-dispersive infrared (NDIR) and Thermistor |
| CO2 Measuring Range | 0-3 Vol.% (Extended range: 3-6.7 Vol.%) |
| TWA Calculation | 8h time span with 2 min sample period |
| Accuracy (CO2) | ±5% of measured value (0.01 Vol.% resolution) |
| Accuracy (Temp) | ±1°C (±1.8°F) |
| Ambient Temperature | -20°C to +50°C (-4°F to +122°F) | Indoor Use Only |
| Life Expectancy | > 15 years |
| Ingress Protection | IP54 (TÜV) / IP44 (UL) |
| Approvals |
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| Dimensions (LxWxD) | 90 x 161 x 38 mm / 3.5” x 6.3” x 1.5” |
What's Included in the Package

Downloads
- Data Sheet
- Manual
- Quick Guide
- CE Document
