Measurement Specifications
Carbon Dioxide (CO₂)
Sensor Type: NDIR CO₂ Module
Measurement Range: 0…5000 ppm
Accuracy: ±1%
Resolution: 0.1 ppm
Sensor Lifetime: 10 years
Temperature
Measurement Range: -40…+120 °C
Accuracy: ±0.3 °C
Resolution: 0.1 °C
Humidity
Measurement Range: 0–100 %RH
Accuracy: ±2 %RH
Resolution: 0.1 %RH
Outputs and Communication
Analog Outputs
4–20 mA / 0–20 mA / 0–10 V
User-scalable current and voltage outputs
Digital Communication
RS485 – Modbus RTU
Baud Rate: 1200 – 115200
Hardware and General Features
Relay Output: 1 unit, 220 V AC – 3 A
Display: 2×16 COG LCD
Controls: 4 front panel buttons
Power Supply: 10–32 V DC / 12–32 V AC
Power Consumption: 2.8 W
Smart Alarm and Control Functions
All parameters can be read via analog outputs and Modbus
Parameter-specific alarm definitions can be configured
Alarms and warnings can be controlled via relay output
Alarm status is indicated to the user via LED indicators
CO₂ value can be displayed in ppm or %
Temperature and dew point can be read in °C / °F units
The GNT 250 is an advanced environmental monitoring device that measures carbon dioxide (CO₂), temperature, and relative humidity parameters with high accuracy, offering simultaneous monitoring, data logging, and automatic control capabilities.
Thanks to its long-life NDIR CO₂ sensor, wide measurement range, and industrial-grade electronic design, it provides stable, reliable, and sustainable measurements in critical production and storage areas. All measured values can be monitored in real time on the device’s LCD display, while seamless integration with automation systems is ensured through analog and Modbus RTU outputs.
With its built-in relay, alarm, and audible warning functions, the GNT 250 serves not only as a measurement device but also as an active control and safety component.
🧊 Cold Storage & Controlled Atmosphere Facilities
Monitoring CO₂ levels in fruit and vegetable storage areas
Shelf-life optimization
Prevention of spoilage and quality losses
Automatic control of ventilation and gas management systems
🍌 Ripening (Maturation) Rooms
CO₂ monitoring during banana and tropical fruit ripening processes
Ensuring homogeneous ripening
Reducing product losses
🌱 Greenhouses & Agricultural Production Areas
Control of optimal CO₂ levels for plant growth
Enhancing photosynthesis efficiency
Integration with heating, ventilation, and humidity control systems
🏭 Industrial Production Facilities
Environmental monitoring in food, beverage, and packaging plants
Ensuring employee safety in production areas
Continuous monitoring of process conditions
🧪 Laboratories & R&D Centers
Maintaining stable conditions for experimental environments
Test and analysis processes requiring high-precision measurements
Integration with centralized monitoring systems
🏢 Buildings & Indoor Spaces
Offices, meeting rooms, classrooms
Indoor Air Quality (IAQ) monitoring
Energy-efficient ventilation control
