Flowserve TRG5-53 - Manual (Page 8)

8
Function
The temperature sensors TRG 5-53, TRG 5-54, TRG 5-55, TRG 5-56, TRG 5-57,
TRG 5-58 feature standardized platinum resistance thermometers Pt 100 according
to DIN IEC 751. The temperature sensor in combination with temperature switches
TRS 5-6 or TRS 5-8 are used for temperature monitoring. The power source is
equipped with an adjustable resistor and supplies the resistance thermometer
Pt 100 with a constant current. The desired switch-off temperatures are adjusted with
the aid of the 8 pole code switch on the temperature switch. To ensure a fail-safe
alarm in the event of excessively high temperatures the circuit features relays of the
normally-closed type. In the event of a power failure the temperature switch will raise
an alarm.
System description
The equipment TRG 5-53, TRG 5-54, TRG 5-55, TRG 5-56, TRG 5-57, TRG 5-58 are
temperature sensors according to DIN 3440.
The temperature sensing element Pt 100 integrated in the protection tube has
temperature-dependent resistance values. The temperature switch TRS 5-6 / TRS 5-8
measures the resistance values and raises a temperature alarm correponding to the
adjusted limit.
Application in steam boilers and pressurized hot-water plants acc. to TRD 604 and
other heat-generating units.
Design
TRG 5-53, TRG 5-54:
Temperature sensor with protection tube and ½" screwed terminal box to DIN IEC 751.
The temperature sensing element can be removed.
TRG 5-55, TRG 5-56, TRG 5-57, TRG 5-58:
Temperature sensor with protection tube and socket-weld end to DIN IEC 751.
The temperature sensing element can be removed.
Explanatory Notes
Scope of supply
TRG 5-53, TRG 5-54, TRG 5-55, TRG 5-56, TRG 5-57, TRG 5-58
1 Temperature sensor
1 Installation manual
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