Barometer hygrometer thermometer - Ethernet interface and wired sensor *Step required

  • Temperature, humidity, pressure.
  • Two relay outputs.
  • Three binary inputs.
  • Capacitive polymer sensor.
Unit price
482,12 €
Final price
482,12 €
Your configuration:

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Ambient temperature, relative humidity, atmospheric pressure with two relay outputs. Humidex reading.

The H7531 sensor is designed for online monitoring of temperature, relative humidity of the air without aggressive substances.

Three binary inputs for detection of two-state signals are the advantage.

The other devices are controlled by two relay outputs.

The high precision capacitive polymer sensor provides excellent long term calibration stability and ultimate precision.

The measured values ​​are also converted to other interpretations of humidity: dew point temperature, absolute humidity, specific humidity, mixing ratio and specific enthalpy.

The device is supplied with a T + RH probe with a 1 m cable. Cable lengths 2 m or 4 m available as an option.

Power supply is not included.

Processing and analysis of measured data

  • online in COMET Cloud
  • COMET database software
  • integration into third-party systems 


  • H7531
  • Manual
  • Traceable calibration certificate
  • Free Tsensor configuration software
  • COMET Cloud for 3 months


- Temperature
- Relative humidity
- Calculated values ​​(dew point, etc.)
- Atmospheric pressure

Two-state signal

Relative humidity rate: 0 to 100%

Relative humidity measurement uncertainty: ± 2.5% RH from 5 to 95% at 23 ° C

Temperature measurement uncertainty: ± 0.4 ° C

Maximum measuring pressure range: 600 to 1100hPa

Atmospheric pressure uncertainty: ± 1.3hPa at 23 ° C

Resolution: 0.1 ° C, 0.1% RH, 0.1hPa

Measuring interval: 2s

Available units: degrees Celsius, Fahrenheit

Calculated values: Dew point, absolute humidity, specific humidity, mixing ratio, specific enthalpy

Available pressure units: hPa, kPa, mbar, mmHg, inHg, inH2O, PSI, oz / in2

Uncertainty and dew point measurement range: ± 1.5 ° C at ambient temperature T <25 ° C and RH> 30%
range from -60 to + 80 ° C

Uncertainty and absolute humidity measurement range: ± 1.5g / m3 at ambient temperature T <25 ° C
range from 0 to 400g / m3

Uncertainty and specific humidity range: ± 2g / kg at ambient temperature T <35 ° C
range 0 to 550g / kg

Uncertainty and ratio range of mixtures: ± 2g / kg at ambient temperature T <35 ° C
range 0 to 995g / kg

Uncertainty and specific enthalpy range: ± 3kJ / kg at ambient temperature T <25 ° C
range 0 to 995 kJ / kg

Humidity sensor temperature compensation: The entire temperature range

Temperature operating range: -30 to + 80 ° C

IP protection index: IP40

Number of relay outputs: 2

Maximum power, voltage and current of the relay output: 50V, 2A, 60VA

Number of binary inputs: 3

Signal for binary inputs: Dry contact, open collector, or two-state voltage signal.
The inputs are not galvanically isolated.

Minimum pulse duration at binary input: 500ms

Low tension : 0 to + 0.5V

High tension : +3.0 to + 30V

audible alarm: integrated - can be deactivated

LAN connection: RJ-45, 10Base-T or 100Base-TX connector

Communication protocol : WWW, Modbus TCP, SNMPv1, SOAP

Alarm protocols: Email (SMTP authentication supported), SNMP Trap, Syslog

Configuration: T-Sensor, Telnet, keyboard

LCD display temperature operating range: Readable at operating temperature + 70 ° C, it is recommended to turn off the LCD screen at more than 70 ° C

Hood filtering capacity: 0.025mm - filter with stainless steel mesh

Supply : 9 to 30Vdc, max consumption 1W

power cable : coaxial, diameter 5.5 x 2.1mm

Probe cable length: 1m, 2m or 4m optional

dimensions: 136 x 159 x 45 mm (W x H x D), probe length 88 mm, probe diameter 18 mm

Weight: approx.410g - 1m probe

Warranty: 3 years 



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