COMET T6541 – WebSensor for CO₂ 0–10,000 ppm, Temperature –30 to +105 °C, Humidity

COMET T6541 WebSensor CO₂ + Temperature + Humidity Ethernet 

The COMET T6541 is a high-performance Ethernet WebSensor (T-Line) for simultaneous measurement of CO₂ concentration up to 10,000 ppm, temperature, and relative humidity – featuring integrated sensors and one of the best dual-wavelength NDIR CO₂ modules on the market. As a true remote CO₂ monitor, thermometer, and hygrometer, it is the ideal solution for professional indoor air quality monitoring in offices, schools, conference rooms, server rooms, production halls, hospitals, theaters, or any environment where high CO₂ levels can cause fatigue, loss of concentration, or health risks.

The maintenance-free NDIR sensor with multipoint calibration and automatic aging compensation measures CO₂ with exceptional precision (±(100 ppm + 5 % of reading) at 25 °C and 1013 hPa). The capacitive polymer sensor ensures excellent long-term stability for temperature (–30 to +105 °C, ±0.4 °C) and humidity (5 to 100 %RH, ±2.5 %RH from 5–95 % at 23 °C). All humidity parameters (dew point, absolute humidity, specific humidity, mixing ratio, specific enthalpy) are automatically calculated and instantly available.

The dual-line LCD alternately displays CO₂, temperature, humidity, or dew point, and can be switched off during continuous operation. Via Ethernet (RJ45), the sensor integrates seamlessly into networks – with direct connection to the COMET Cloud (3 months free, then 1 credit/year) for charts, exports, alarms, and remote access via app or browser. Alternatively, it supports Modbus TCP, SNMP, JSON, or XML for integration into your own SCADA/BMS/IoT system.

Its robust housing and operating temperature range from –30 to +80 °C make the T6541 a reliable device for demanding continuous operation – indoors and outdoors. No dedicated server required – COMET Cloud handles all data processing.

Why the COMET T6541 is the professional CO₂ WebSensor:

• Extended CO₂ range 0–10,000 ppm – for advanced applications
• 3-in-1: CO₂ + temperature + humidity – with top-quality NDIR sensor
• Ethernet interface – direct network integration
• COMET Cloud included – 3 months free, then low-cost credit
• Protocols: Modbus TCP, SNMP, JSON, XML – open to third-party systems
• Dual-line LCD – switchable
• High precision – CO₂ ±(100 ppm + 5 %) | Temp. ±0.4 °C | Humidity ±2.5 %RH
• Dew point and all humidity parameters integrated
• Remote alarm function – e-mail, SNMP trap, Syslog
• 3-year warranty

Technical data T6541:

• CO₂ measuring range: 0 to 10,000 ppm
• CO₂ accuracy: ±(100 ppm + 5 % of reading) at 25 °C and 1013 hPa
• Temperature measuring range: –30 to +105 °C (±0.4 °C)
• Humidity: 5 to 100 %RH (±2.5 %RH from 5–95 % at 23 °C)
• Dew point: –60 to +80 °C (±1.6 °C at T<25 °C and RH>30 %)
• Resolution: 1 ppm / 0.1 °C / 0.1 %RH
• Interface: Ethernet (RJ45)
• Cloud: COMET Cloud (3 months free)
• Protocols: WWW, Modbus TCP, SNMPv1, SOAP, XML
• Alarm protocols: E-mail, SNMP trap, Syslog
• Power supply: 9–30 V DC (PoE optional)
• Operating temperature: –30 to +80 °C
• Protection class: IP30
• Warranty: 3 years

Perfectly suited for:

• Schools, kindergartens & lecture halls
• Offices & open-plan offices
• Conference & meeting rooms
• Server rooms & data centers
• Hospitals & medical facilities
• Production & storage halls
• Indoor air quality per DIN 1946-6
• Smart building & energy management

Setup – ready in minutes

Connect the network and power cables, assign an IP address via DHCP or static configuration – done. The integrated web interface guides you through setup. With COMET Cloud, you’ll be online in seconds – no server required.

Summary:

• WebSensor for CO₂ concentration, temperature, and relative humidity with remote alarm
• A multi-step adjustment process for CO₂ and temperature ensures excellent measurement accuracy across the entire temperature range
• The dual-wavelength NDIR measurement principle automatically compensates for aging effects
• The CO₂ module is highly resistant to contamination, maintenance-free, and features outstanding long-term stability
• The high-precision capacitive polymer sensor ensures exceptional calibration stability and accuracy over time
• The two-line LCD display provides additional comfort
• Measured values are converted into various humidity parameters: dew point, absolute humidity, specific humidity, mixing ratio, and specific enthalpy
• CO₂ concentration is displayed on the screen or indicated via a colored LED.

Scope of delivery:

• T6541
• User manual
• Traceable calibration certificate
• Free TSensor software for transmitter configuration
• COMET Cloud for 3 months
• Power adapter not included