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OptiCal Relative Humidity and Temperature Generator with built-in Chilled Mirror |
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The OptiCal is a bench-top, fully self-contained humidity/
temperature calibrator. The system comprises a humidity
and temperature controlled chamber that can house up
to five or more humidity sensors, depending on their
physical dimensions. The humidity and temperature within
the chamber are closed-loop controlled and continuously
monitored by a precision chilled mirror reference
hygrometer. The OptiCal works by time proportioning the
flows of dry and saturated air according to the pre-selected
relative humidity value. The chamber temperature is
controlled by a four-zone Peltier heat pump arrangement for
maximum stability and minimum temperature gradient. The
saturator assembly can be filled easily with distilled water
reservoir at the front of the unit and the easily accessible
desiccator can be re-charged by heating when required. No
other maintenance is necessary. The only external service
required is a single phase power supply.
Product Features
- Precision relative humidity and temperature calibrator
- Generate 10 to 90% RH over +10 to +50°C (+50 to +122°F) temperature
- Integral chilled mirror reference hygrometer
- UKAS accredited calibration, as standard
- Humidity and temperature profile generation for unattended verification of sensors
- Transportable calibrator enables on-site calibrations
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Technical Specification |
| Reference Hygrometer
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| Type |
Optidew chilled mirror dew-point transmitter |
| Humidity |
| Generator Range |
10-90% RH |
Accuracy
Control Element |
≤±1% RH (10–70% RH)
≤±1.5% RH (70–90% RH) |
| Stability |
±0.2% RH (20–80% RH) |
Temperature |
| Generator Range |
+10 to +50°C (+50 to +122°F)
(lowest T set point = 10ºC (18°F) below ambient) |
| Accuracy |
±0.1°C (±0.2°F) |
| Stability |
±0.1°C (±0.2°F) |
Chamber |
Ramp Rate from
+20 to +40°C (+68 to +104°F)
+40 to +20°C (+104 to +68°F) |
1.5°C/minute (2.7°F/minute)
0.7°C/minute (1.2°F/minute) |
| Control Element |
Removable relative humidity sensor |
| General |
| Probe Ports |
Up to 5 – sensor body diameters 5 - 25mm (0.2 to 0.98") accommodated by port adapters
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| Chamber Volume |
2000cm3 (122.1in3) |
| Chamber Dimensions |
105 x 105 x 160mm (4.13 x 4.13 x 6.3") (w x h x d) |
| OptiCal Dimensions |
520 x 290 x 420mm (20.5 x 11.4 x 16.5") (w x h x d) |
| Set Point Resolution |
0.1 for humidity and temperature |
| Displays |
High definition 2-lines alpha numeric |
| Measurement Units |
ºC, ºCdp, % RH
g/kg, g/m3, (t-td), aw |
| Outputs |
Analog: Two channels 4-20mA or 0-20 mA
Digital: RS232 (RS485 optional)
Alarm: Volt free contact, 2A @ 30 V DC |
| Power Supply |
85–264 V AC, 47–63 Hz, 150 VA |
| Weight |
20kg (44lbs) |
Applications |
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