S503 Relative Humidity Generator for Calibrations

The S503 Humidity Generator enables users of humidity sensors, transmitters and portable devices to quickly and accurately generate a stable humidity in a test chamber to validate or calibrate sensors.

Product Features

  • Generates humidity levels between 10-90% RH
  • Highly portable
  • Fast stabilisation of chamber humidity
  • Independent reference hygrometer-optional
  • Multiple sensors can be calibrated at the same time

Technical Specification

Generation Range 10-90% RH in steps of 0.1% RH
Accuracy ±2% RH or better (5 – 95% RH)
Stability Chamber Better than ±0.5%
Stabilisation Time To Set Point < 10 minutes
Temperature Accuracy ±0.3°C internal reference
Operating Temperature
+15 to +35°C
Sensor Under Calibration
Voltage Read Out 0-1, 0-5, 0-10 V
Current Read Out 4-20 mA
Voltage Supply 15 V DC, ±10% at 30 mA max
Probe Ports 7 off – sensor body diameters 5 to 25mm accommodated by port adapters
Desiccant Chamber 25g capacity
Saturation Chamber 25ml capacity, distilled water
Display 3½ digit LCD, 13mm characters
Power Supply 12 V DC (100 with 240 V AC adapter included)
Weight 1.85kg



Related Products

S904 S904
Designed to calibrate and verify the operation of relative humidity sensors and transmitters...
OptiCal OptiCal
OptiCal offers the opportunity to provide local calibration of RH sensors that is directly...
Portable, battery-operated handmeter, available with a number of different probe configurations....