Flowserve TRG 5-11 - Manual (Page 5)

5
Explanatory Notes
Description
Scope of supply
TRG 5-11
 Temperature sensor TRG 5-, PN 
 Installation manual
TRG 5-41
 Temperature sensor TRG 5-4, PN 60
 Installation manual
TRG 5- and TRG 5-4 are temperature sensors with integral thermocouples to DIN EN 60584.
The temperature sensors work in conjunction with the temperature switch TRS 5-7 and serve as safety
temperature limiters according to DIN 3440/prEN 4597 for signalling excessively high temperatures.
Application in combination with GESTRA safety temperature limiter TRS 5-7 in steam boilers,
(pressurized) hot water plants and furnaces according to DIN 30683 up to 000 °C , e. g. for limiting
furnace or flue gas temperatures.
The temperature sensors feature an exchangeable temperature sensing element, consisting of two
thermocouples type K (NiCr-Ni, Chromel-alumel) according to DIN IEC 584, class . To ensure short
response times the temperature sensors are installed without an additional thermowell. The voltage
generated in the thermocouple as a function of the temperature reading is compared in the safety
temperature limiter with the adjusted switch-off temperature. When the adjusted temperature limit
is exceeded, the follow-up function that has to be provided on site (e. g. a temperature alarm) will be
triggered.
Function
Design
System components
TRS 5-7
Temperature switch
TRS 5-7. Two-channel (redundancy) limiter with periodic self-checking routine to
VDE 06.
TRG 5-11
Temperature sensor with protection tube to DIN IEC 75.
The temperature sensing element B can be removed.
TRG 5-41
Temperature sensor with weld-in protection sleeve to DIN IEC 75.
The temperature sensing element B can be removed.