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EDL CRYO-CAL-2-LI Comparison Cryostat Calibrator
The EDL CRYO-CAL-2-LI uses liquid nitrogen cooling for comparison calibration of compatible temperature sensors.
- Temperature range: −196°C to 0°C.
- Standard calibration block with four sensor wells.
- Controlled non-inductive DC heater.
- No pumping or stirring system.
- RS-232 interface and iTools software.
- 120 V and 240 V power configurations available.
EDL CRYO-CAL-2-LI Comparison Cryostat Calibrator
The EDL CRYO-CAL-2-LI provides a low-temperature source for comparison calibration of compatible temperature sensors from −196°C to 0°C. Liquid nitrogen provides the cooling, while a controlled heater establishes the required calibration temperature.
Previously described on this page as CRYO-CAL-2, the current EDL product is listed as CRYO-CAL-2-LI. Confirm the full model and power configuration when ordering or replacing an existing unit.
Key Features
- Liquid-nitrogen cooling without a cascade refrigeration system.
- Standard block with four sensor wells.
- Non-inductive DC heater for temperature control.
- No pumping or stirring system.
- RS-232 connection and iTools software.
- Spacer tubes and inserts for different probe diameters.
How Comparison Calibration Works
A reference thermometer and the sensors under test are placed in the calibration block. Once conditions have stabilised, their readings are compared at the selected temperature points. The reference instrument, sensor positioning, immersion and measurement procedure all contribute to the result.
The cryostat supplies the thermal environment; its controller indication should not automatically be treated as the calibration reference.
Specifications
| Parameter | Published specification |
|---|---|
| Current model | CRYO-CAL-2-LI |
| Temperature range | −196 to 0°C (approximately 77 to 273 K) |
| Cooling medium | Liquid nitrogen (LN₂) |
| Standard block wells | Four 8 mm holes |
| Included sensor tubes | Four tubes for 0.250-inch (6.35 mm) sensors |
| Minimum total insertion length | 279.4 mm (11 inches) |
| Stability over 15 minutes | Less than 5 mK (0.005°C) |
| Uniformity | Less than 5 mK (0.005°C) |
| Controller resolution | 0.1°C |
| Dewar capacity | Approximately 13.9 litres |
| Power options | 120 V AC, 10 A, 50/60 Hz; a 240 V AC version is available. |
Stability describes temperature change over time; uniformity describes temperature differences within the working region. Neither figure represents the complete calibration uncertainty. Performance should be assessed under the specified operating conditions.
Probe Fit and Configuration
Check both the sensor diameter and usable stem length before choosing tubes or inserts. Confirm the position of the sensing element within the block and the probe's suitability for cryogenic temperatures. Custom configurations can be discussed where the standard arrangement is unsuitable.
For a Malaysian installation, specify the required 240 V configuration and confirm the electrical connection. The calibration setup also requires a suitable liquid-nitrogen supply and reference measurement system.
Original CRYO-CAL-2 Specification Illustration
This retained illustration is from the earlier page. Confirm dimensions and supplied accessories against the selected CRYO-CAL-2-LI configuration.
Product Videos
Need Help Selecting a Cryogenic Calibrator?
Contact Seacom with your calibration temperature points, sensor diameters and lengths, required uncertainty and available power supply. We can help review the CRYO-CAL-2-LI configuration and the accessories needed for your measurement setup.
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