Isotech TRU 938 Specifications

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CALIBRATION SOLUTIONS

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Thermocouple Reference Unit

0 to 70°C

ACROSS RAngE

g

Suitable for Laboratory or High Capacity Applications

g

Works in high ambients up to 65°C

g

Reliable Solid State Design

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.

Controller

Alarm-Cable

Socket

Switched Mains
Cable Socket &

Fuse-Holder

Cooling Ducts and

Heat Sink Fins

Metal Block with Pockets for

Thermocouple Junctions

TRU Model 938

Model 938

Operating Temp. 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

environments

How to order

TRU Model 938
Normally uniquely specified for each order.
Please discuss your exact requirements with us before ordering.