Product guide

63
Humidity and Dew-Point Instruments
Please note: Michell Instruments adopts a continuous development program which sometimes
necessitates specifi cation changes without notice. Please contact us for latest version.
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Calibration
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.
Highlights
• Generates humidity levels between 10–90% RH
• Highly portable
• Fast stabilization of chamber humidity
• Independent reference hygrometer – optional
• Multiple sensors can be calibrated at the same time
Technical Specifi cations
Humidity
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%
Stabilization time to set point <10 minutes
Temperature
Temperature accuracy ±0.3°C (±0.54°F) - internal reference
Operating temperature
(ambient)
+15 to +35°C (+59 to +95°F)
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
General
Probe ports 7 off – sensor body diameters 5 to 25mm
(0.2 to 0.98”) accommodated by port
adapters
Desiccant chamber 25g (0.88oz) capacity
Saturation chamber 25ml capacity, distilled water
Display 3½ digit LCD, 13mm (0.5”) characters
Supply 12 V DC (100 - 240 V AC adapter
included)
Weight 1.85kg (
4.08lb)
Dimensions
Notes:
Hole A = Power hole for adapter
Issue No: S503_97199_V3_UK_0312