Starting at $1,085.00
  • Usually ships in 4-6 weeks



  • Integrated probe
  • Measures relative humidity and temperature, or humidity only, or temperature only
  • Relative humidity range: 0 to 100%RH
    • Accuracy: ±1.0%RH
  • Temperature range: -100 to 150°C (-148 to 302°F)
    • Accuracy: ±0.2°C
  • Calculates the dew or frost point
  • Metal NEMA 4 / IP65 enclosure
  • 2-wire, loop-powered and 3-wire models
  • Supply voltage: 10 to 28 VDC (2-wire models) or 15 to 40 VDC / 12 to 28 VAC (3-wire models)
  • Analog output signals
  • Configurable analog output signals (signal type, parameter and range)
  • Automatic RH sensor test with optional sensor drift correction


The Rotronic HygroFlex-7 series of temperature and humidity transmitters are designed for fixed installation in industrial applications. Equipped with a metal enclosure and a metal probe that can survive exposure to temperatures up to 200°C (392°F), the HygroFlex-7 can handle the toughest industrial environments.

Designed for applications where the conditions are within the range of 0 to 100 %RH and -100 to 150°C (-148 to 302°F), the HygroFlex-7 is accurate to ±1.0%RH and ±0.2°C. The HygroFlex-7 transmitter is available in different configurations and has an extensive set of settings and functions that can be configured and enabled with the Rotronic HW4 software after connecting the HygroFlex-7 to a PC. In spite of its sophistication, the HygroFlex-7 can still be used as a simple conventional humidity and temperature transmitter.

The HygroFlex7-series is compatible with HygroClip2 probes with integrated AirChip3000 technology - which achieve a degree of accuracy not seen before. AirChip3000 technology compensates humidity and temperature over 30,000 reference points, has a 2000 data point memory, calculates dew/frost point, has sensor auto-diagnostics and automatic correction. AirChip3000 also includes active alarming and information, as well as ASIC (Application Specific Integrated Circuit); micro-controller and EEPROM on one chip.

The HygroFlex7-series is available in wall and duct mount versions as well as a cable mount version which includes a 2 meter steel cable. Each version includes robust industrial housing. The Hygroflex7-series transmitters have two freely selectable and scalable analog outputs. Units are available as 2-wire or 3/4-wire transmitters. A UART service interface is included.

Rotronic HygroFlex7-series Applications

The HygroFlex7-series is ideal for all applications were exact measurement of humidity and temperature is of decisive importance.

  • Heavy industry
  • Building management systems
  • Underground facilities
  • Tunneling