OptiCal Humidity Calibrator

The OptiCal is a premium calibration solution for humidity sensors. The stand-alone and transportable humidity calibrator requires no external services other than mains power, and features an integrated chilled mirror reference instrument to enable the operator to perform calibrations that are traceable to national standards.

Product Features

  • Simple operation and maintenance
  • Easy calibration of relative humidity sensors
  • Excellent chamber stability and uniformity
  • Manual control or optional straightforward automated set point programming
  • Humidity and temperature controlled chamber
  • Generate 10 to 90% RH over +10 to +50°C temperature
  • Built in precision chilled mirror reference instrument
  • Transportable to allow on-site calibrations

Technical Specifications

Generated Range 10 - 90% RH
Control Element Accuracy ≤ ±1% RH (10-70% RH)
≤ ±1.5% RH (70-90% RH)
Stability ±0.2% RH (20-80% RH)
Generated Range +10 to +50°C (+50 to +122°F)
Accuracy ±0.1°C (±0.18°F)
Accuracy ±0.1°C (±0.18°F)
Ramp Rate +20 to +40°C (+68 to +104°F): 1.5°C / minute (2.7°F / minute)
+40 to +20°C (+104 to +68°F): 0.7°C / minute (1.2°F / minute)
Control Element Removable relative humidity sensor
Accuracy Dew Point: ±0.2°C (±0.36°F)
Temperature: ±0.1°C (±0.18°F)
Measurement Units Dew Point: (°C/°F), % RH
Temperature: (°C/°F), gm-3, gkg-1, water activity (aW)
Outputs Analog: 4-20 mA or 0-20 mA over user-settable output
Accuracy: ±0.2°C (±3.6°F)
Digital: 500 Ω maximum load resistance
Alarm: RS232 @ 9600 baud rate
Volt free contact, 30 V, 100 mA maximum
Probe Ports Up to 5 - sensor body diameters 5 to 25mm (0.2 to 0.98") accommodated by port adapters
Chamber Volume 2000cm3 (112.1in3)
Chamber Dimensions 105 x 105 x 160mm (4.13 x 4.13 x 6.3") (h x w x d)
Instrument Dimensions 290 x 520 x 420mm (11.4 x 20.5 x 16.5") (h x w x d)
Set-point Resolution 0.1 for humidity and temperature
Displays 2 line Vacuum Fluorescent Display
Supply 85 to 264 V AC, 47/63 Hz, 150 V A
Weight 20kg (44lbs)



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