Spring Loading; Figure 8: Spring Loading And Sensor Assembly - Honeywell STT700 SmartLine User Manual

3.3.4. Spring Loading

Figure 8: Spring Loading and Sensor Assembly

Spring loading is available worldwide with direct head mounting. In North America, the spring
loading is typically included in the sensor/thermowell assembly and is available with all housings.
For non-North American spring loading as shown in Figure 8, simply include the springs under the 33
mm pitch mounting screws, pass the screws through the module and sensor mounting plate and snap
in the retaining circlip to the screws to hold the assembly together. Guide the sensor assembly through
the housing sensor entry and screw down the 33 mm screws until the limit is reached as the sensor
presses against the bottom of thermowell.
For wall or 2'' pipe mounting, the temperature sensor can be remote from the STT700 field mount
housing or integral to the housing. For remote installations, the sensor wiring should be run in
shielded, twisted pair wiring and connected via one of the housing wiring entries.
For explosion proof/flameproof installations, ensure that the cable entries are fitted with flameproof
adaptors and that the wiring grade complies with local standards.
STT700 Temperature Transmitter User's Manual
Revision 2 Page 15