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Humidity and Temperature Probe Calibrator - Michell OptiCal

Updated:2023-10-17

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  • Brand: PST/Michell
  • Model: OptiCal
  • Description: The OptiCal is a premium, self-contained calibrator for humidity sensors. It features an integrated chilled-mirror reference which enables the operator to perform calibrations that are traceable to na
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Product Details

Humidity and Temperature Probe Calibrator - Michell OptiCal Description:

Product Manual Datasheet

Built-in Chilled Mirror Reference Hygrometer

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

The OptiCal is a premium, self-contained calibrator for humidity sensors. It features an integrated chilled-mirror reference which enables the operator to perform calibrations that are traceable to national standards.

The calibration chamber accommodates up to 5 probes or sensors of any brand or model. The chamber is insulated, and temperature controlled for maximum stability and minimum temperature gradients.

Specifications

Humidity
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)
Temperature
Generated Range +10 to +50°C (+50 to +122°F)
Accuracy ±0.1°C (±0.18°F)
Accuracy ±0.1°C (±0.18°F)
Chamber
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
Reference
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
General
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)

Suitable Applications

Calibration of humidity and temperature probes

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