This is a Hygrotest 6337 9742 user manual
This manual provides instructions for operating and maintaining the Testo 6337 9742 heated compact transmitter. It covers safety precautions, installation, calibration procedures, sensor cleaning, and technical specifications. The device measures relative humidity and temperature with an output signal of 0–10 V and is designed for stationary use in meteorological conditions (IP54). Calibration can be performed in a climate chamber or at Testo CAL. The manual also includes ordering information and technical data such as measurement ranges and accuracy.
| Measurement Range - Humidity | 0 to 100 %RH |
|---|---|
| Measurement Range - Temperature | 0 to +70 °C |
| Accuracy - Humidity | +2.5 %RH (0 to 100 %RH) at rated temperature +25 °C |
| Sensor Type | PT100 Class B |
| Output Signal - Humidity | 0 to 10 V |
| Power Supply | 18 to 28 V DC |
| Maximum Storage and Transport Temperature | -20 to +80 °C |
| Probe Length | 196 mm |
| Probe Pipe Diameter | 21 mm |
0 to 100 %RH.
+2.5 %RH (0 to 100 %RH) at rated temperature +25 °C.
Calibration can be performed in a climate chamber or at Testo CAL using the calibration keys S1 and S2 for 11.3 %RH and 75.3 %RH at 25 °C respectively.
0 to 10 V.