1. Home
  2. Robust humidity probe

Robust humidity probe

0636 2161
$1 223.00 $1 345.30
  • Probe for relative humidity and air temperature measurements
  • Measurements of the material equilibrium moisture content possible
  • Temperature measuring range: -20 to +125 °C (briefly up to +140 °C)
  • In combination with the testo 635, the robust humidity probe measures the humidity and temperature of the air. Because the probe can be used up to 125 °C, it also enables measurements in air exhaust ducts. In addition, it is suitable for measuring the material equilibrium moisture content, for example in bulk materials.
    When connected to the testo 635 humidity and temperature measuring instrument, the robust humidity probe measures the relative humidity and temperature in storage, refrigerated and work areas or in air conditioning/ventilation ducts. In addition, a material equilibrium moisture content measurement can be carried out. To do this, the function for calculating the H2O content must be activated on the measuring instrument and the material of the object being measured must be set (anhydrite flowing screed, cement flowing screed, lime sand brick, concrete, high-insulation brick, solid brick, hard wood, soft wood, aerated concrete and particle board).

    The probe can also be connected to the testo 435-2 and testo 435-4 measuring instruments (however without the possibility of the measuring material equilibrium moisture content).

    Robust humidity probe with 1.8 m fixed cable.

  • testo 635-1
    testo 635-1 - Thermohygrometer 
      0560 6351
      $728.00 $800.80
    • Temperature - NTC

      Measuring range
      -20 to +125 °C
      ±0.4 °C (0 to +50°C),
      +1.2 % of mv (Remaining Range)
      ±0.5 °C (-20 to 0°C, +50 to +80°C)

      Humidity - Capacitive

      Measuring range
      0 to +100 %RH
      ±2 %RH at +25 °C (+0 to +100 %RH)
      long-term stability: ±1 %RH / year
      ±0.03 %RH/K (k=1)
      *The sensor accuracy corresponds to the system accuracy.

      General technical data

      Diameter probe shaft
      12 mm
      Length probe shaft
      300 mm