testo 6621 – wall-mounted moisture transmitter with display

Wall-mounted humidity transmitter with display

  • Testo's highly accurate and long-term stable moisture sensor
  • Measuring range moisture: 0...100%.
  • Measuring range temperature: 0... +60°C

Leveranstid: 5–10 arbetsdagar

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Leveranstid: 5–10 arbetsdagar

testo 6621 – wall-mounted moisture transmitter with display

The testo 6621 is a compact moisture transmitter series with a stylish design and a wide range of options. The highly accurate and long-term stable humidity sensor is the heart of Testo’s 6621 transmitter series, which can be adapted to most applications thanks to its wide range of options. As an option, the user-friendly software P2A is available, which allows the adjustment of the transmitters, parameterization of units and scale, provides history of all events, etc.

Available in designs:

  • For wall mounting with internal or external sensor and for duct mounting
  • With or without display
  • Optional output signals 4-20 mA, 0-1 V, 0-5 V, 0-10 V
  • Optional types of filters – Teflon, metal sinter, mesh, etc.

Contact us for prices and more information

Enclosure MaterialABS
Measure81x81x26mm

Protection classIP65
Operating temperatureElectronics (instrument housing) -20...+70°C

Display: ±0...+50°C
Screw connection1xM16x1.5
Moisture sensorTesto moisture sensor
Temperature sensorNTC sensor
Measurement rangeHumidity: 0...100 %RH

Temperature: ±0...60°C
Adjustment points11.3%RH, 75.3%RH

and that the analog output can also be adjusted"
Accuracy :
Moisture±2.5 %RH (0...90%RH)

±4 %RH (90...100%RH)
temp0,5°C
Analog output:4...20 mA (2-wire technology) two separate outputs

0...1V (4-wire technology) two separate outputs

0...5V (4-wire technology) two separate outputs

0...10V (4-wire technology) two separate outputs

Power supplyWith analog output: 24VDC ±10%

With volt output: 20...30VDC
EMCIn accordance with Directive 89/336 EEC
Sensor insertion length:220mm
There are no probes for this item.
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testo 6621 – moisture transmitter for wall without display

Wall-mounted humidity transmitter with testo's highly accurate and long-term stable humidity sensor.

  • Easy and safe handling
  • Measuring range moisture: 0...100%.
  • Measuring range temperature: 0... +60°C