COMET T7511 – WebSensor, Cable Probe for Temperature, Humidity, and Barometric Pressure

COMET T7511 – Ethernet WebSensor with external cable probe for temperature –30 to +105 °C, humidity, barometric pressure, and dew point

The COMET T7511 is a professional Ethernet WebSensor (T‑Line) designed for simultaneous measurement of temperature, relative humidity, and barometric pressure, featuring a remote combination probe and a built‑in high‑precision barometer. As a true remote thermometer‑hygrometer‑barometer with Ethernet interface, it is the ideal solution for flexible, professional monitoring in server rooms, technical rooms, warehouses, clean rooms, greenhouses, production facilities, or meteorological stations.

The high‑precision capacitive polymer humidity sensor and excellent barometric sensor ensure top accuracy and long‑term stability. The probe measures temperature up to +105 °C and humidity from 0 to 100 %RH. In addition to the primary values, the T7511 automatically calculates all key humidity parameters: dew point, absolute humidity, specific humidity, mixing ratio, and specific enthalpy – all directly available via the integrated web interface or through Modbus TCP.

The large dual‑line LCD shows temperature, humidity, pressure, or dew point as selected and can be disabled during continuous operation. Via Ethernet (RJ45), the sensor integrates seamlessly into networks – with direct access to COMET Cloud (3 months free, then 1 credit/year) for graphs, exports, alarms, and remote access via app or browser. Alternatively, Modbus TCP, SNMP, JSON, or XML can be used for integration into your own SCADA/BMS/IoT solution.

The robust housing and operating temperature range of –30 to +80 °C (probe up to +105 °C) make the T7511 a reliable partner for demanding continuous operation, both indoors and outdoors. The cable probe allows optimal placement of the measuring point and is ideal for confined or hot areas.

Why the COMET T7511 is the professional WebSensor with cable probe:

• External cable probe – flexible for difficult installation positions
• 3‑in‑1: temperature + humidity + barometric pressure – with high‑grade barometer
• Ethernet interface – direct network connection
• COMET Cloud ready – 3 months free, then affordable
• Modbus TCP, SNMP, JSON, XML – open for third‑party systems
• Large dual‑line LCD – can be turned off
• Highest precision – Temp. ±0.4 °C | Humidity ±2.5 %RH | Pressure ±1.3 hPa
• All humidity parameters integrated – dew point immediately available
• Remote alarm function – e‑mail, SNMP Trap, Syslog
• IP65 housing – for harsh environments
• 3‑year warranty

Technical data T7511:

• Temperature measurement range: –30 to +105 °C (±0.4 °C)
• Relative humidity: 0 to 100 %RH (±2.5 %RH from 5–95 % at 23 °C)
• Dew point: –60 to +80 °C (±1.5 °C at T < 25 °C and RH > 30 %)
• Barometric pressure: 600 to 1100 hPa (±1.3 hPa at 23 °C from 800–1100 hPa)
• Resolution: 0.1 °C / 0.1 %RH / 0.1 hPa
• Probe cable length: depending on selection
• Interface: Ethernet (RJ45)
• Cloud: COMET Cloud (3 months free)
• Protocols: WWW, Modbus TCP, SNMPv1, SOAP, XML
• Alarm protocols: E‑mail, SNMP Trap, Syslog
• Display: Dual‑line LCD, switchable off
• Power supply: 9–30 V DC (PoE optional)
• Operating temperature: –30 to +80 °C
• Protection rating: IP65

Perfect for:

• Building automation and BMS systems
• Climate chambers and drying systems
• Data centers and server rooms
• Clean rooms and pharmaceutical production
• Food storage and cold rooms
• Museums, archives, and depositories
• Production monitoring
• Meteorological stations

Installation & commissioning – completed in minutes

Mount the electronic housing, place the probe at the desired measuring point, connect the network cable and power – done! The integrated web interface guides you through the setup. With COMET Cloud, you are online in seconds – no server required.

Available variants:

• Cable length 1 meter
• Cable length 2 meters
• Cable length 4 meters

Summary:

• WebSensor with cable probe for relative humidity and temperature, and integrated air pressure sensor
• The high‑precision capacitive polymer sensor ensures excellent long‑term stability and maximum accuracy
• The dual‑line LCD display is another advantage
• Measured values are converted into additional humidity parameters: dew point temperature, absolute humidity, specific humidity, mixing ratio, and specific enthalpy.

Scope of delivery:

• T7511 – probe cable length depending on selection
• User manual
• Traceable calibration certificate
• Free TSensor software for transmitter configuration
• COMET Cloud for 3 months
• Power supply not included