COMET T6340 – CO₂, Temperature, and Humidity with RS232

COMET T6340 CO₂ + T + RH Transmitter RS232 

The COMET T6340 is a high-performance 3-in-1 transmitter for professional indoor air quality monitoring. It simultaneously measures CO₂ concentration (0–5000 ppm), temperature (–10 to +50 °C), and relative humidity (5–95 %RH) – and its large 3-color LED indicator immediately shows the current air quality status: Green = good (≤1000 ppm), Yellow = moderate (1001–1200 ppm), Red = action required (≥1201 ppm).

Ideal for all environments where many people gather: schools, kindergartens, offices, conference rooms, lecture halls, clinics, gyms, restaurants – anywhere where demand-controlled ventilation saves energy while protecting health.

Via its RS232 interface with Modbus RTU protocol, the T6340 can be seamlessly integrated into building automation systems, ventilation control, or SCADA solutions. The maintenance-free NDIR CO₂ sensor with automatic calibration ensures accurate measurements for years without readjustment.

The robust housing is designed for continuous operation between –30 and +60 °C – making it suitable even for unheated technical rooms or corridors.

Why the COMET T6340 is the No. 1 choice for indoor air quality:

• 3 parameters in one device: CO₂ + temperature + humidity
• Precise NDIR CO₂ sensor 0–5000 ppm (±50 ppm + 3%)
• 3-color LED indicator – instantly shows air quality level
• RS232 Modbus RTU – perfect for building automation and ventilation systems
• Integrated dew point calculation
• Maintenance-free thanks to automatic CO₂ calibration
• Rugged housing for –30 to +60 °C ambient conditions
• Easy wall mounting
• 3-year warranty

Technical data:

• CO₂ measuring range: 0 to 5000 ppm
• CO₂ accuracy: ±(50 ppm + 3% of reading) at 25 °C
• CO₂ resolution: 1 ppm
• Temperature measuring range: –10 to +50 °C (±0.5 °C)
• Temperature resolution: 0.1 °C
• Humidity range: 5 to 95 %RH (±2.5 %RH)
• Humidity resolution: 0.1 %RH
• Dew point range: –60 to +80 °C (±1.6 °C at T<25 °C and RH>30%)
• LED indication: Green ≤1000 ppm | Yellow 1001–1200 ppm | Red ≥1201 ppm
• Communication: RS232, Modbus RTU
• Operating temperature: –30 to +60 °C
• Power supply: 9–30 V DC
• Protection class: IP30 (indoor use)
• Mounting: wall-mounted
• Warranty: 3 years

Perfect for:

• Schools, kindergartens, and lecture halls
• Offices and open-plan workspaces
• Conference and meeting rooms
• Restaurants, gyms, and waiting areas
• Hospitals and healthcare facilities
• Demand-controlled ventilation systems (HVAC)
• Building automation and smart building applications
• CO₂ signal light systems according to current guidelines

Installation – quick and easy

Mount it with two screws, connect power and RS232 – the T6340 is ready for use within minutes. The 3-color LED indicator immediately displays the current air quality.

Summary:

• Sensor for temperature, humidity, and CO₂ concentration
• Suitable for indoor use
• Green LED: CO₂ concentration 0–1000 ppm
• Yellow LED: CO₂ concentration 1001–1200 ppm
• Red LED: CO₂ concentration 1201 ppm and higher

Scope of delivery:

• T6340
• User manual
• Traceable calibration certificate
• Free TSensor software for transmitter configuration