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938 Thermocouple Cold Junction Ice Point Reference Unit.
The TRU (Temperature Reference Unit) supplies a stable and accurate 0°C, or elevated reference temperature. It is a self-contained all solid-state unit using Peltier technology which provides maintenance free operation.
The TRU features rapid temperature shift even from high ambient temperatures and is stable within 10 minutes from switch on.
An alarm will be activated should the reference temperature deviate by more than 0.2°C.

Thermocouple Reference Unit

Model  Description 
938 Thermocouple Cold Junction Ice Point Reference Unit.

Thermocouple Referencing to ISO9000 at 0°C, in ambient of up to 65°C or elevated reference
References up to 100 Thermocouples Direct Replacement for other Units

Cold Junction Ice Point Reference Unit specification
Model  938 
Accuracy  ±0.03°C, Errors introduced by thermocouple loading can be
removed by adjusting controller offset 
Stability  ±0.05°C at 20°C 
Ambient Range  2°C to 65°C 
Stabilizing Time  10 minutes from 44°C
Thermocouple Capacity  6 x 6.2mm holes plus 4.2 for calibrated standard PRT or
8 x 8.2mm holes plus 4.2 for calibrated standard PRT
Input/Output  Screw Terminals
Monitor  4 wire Connected PT100, 1/3 Din (optional) Standard ±0.1°C Accuracy
Alarm Facilities  Non-latching relay rated 5 Amps 240V
Power  110 VAC ± 10% (50 / 60 Hz) 100 Watts typical
Dimensions  285mm x 253mm x 312mm (HxWxD)
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Hotek Technologies, Inc
tel: 253-927-6186