TRU Model 938

Ice point reference unit for thermocouples

TRU Model 938

Ice point reference unit for thermocouples

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The TRU (Thermocouple 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.

The 938 can be ordered with a choice of one of two block types. B1 is recommended for laboratory use and has 6 pockets 6.2mm x 130mm deep and a 4.2mm pocket and can accommodate up to 36 junctions. Block B2 is for higher capacity applications and can accommodate up to 100 junctions with 8 8.2mm pockets x 76mm deep and a 4.2 pocket for an optional monitoring PRT.

Technical Feature Value
Operating Temperature 0°C (or 45° to 70°C)
Ambient Range °C 2°C to 65°C
Stability ±0.03°C, errors introduced by thermocouple loading can be removed by adjusting controller offset
Stabilising Time 10 minutes from 44°C
Capacity B1 6 x 6.2mm Pockets + 4.2mm pocket 130mm deep or B2 8 x 8.2mm Pockets +4.2mm pocket 76mm deep.
Alarm Facilities Non-latching relay rated 5 Amps 240V
Power 100 Watts typical 100-130 or 208-240 VAC 50/60Hz
Dimensions Height 228mm Width 253mm Depth 148mm
Weight 5.5kg
Accessories 935-14-54 - Platinum Resistance Thermometer suits Block B1: Includes UKAS Calibration at 0.01°C. 935-14-55 - Platinum Resistance Thermometer suits Block B2: Includes UKAS Calibration at 0.01°C. 935-17-32 - Fan Filter- recommended for high dust e
How to order TRU Model 938 Normally uniquely specified for each order. Please discuss your exact requirements with us before ordering.

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