Settings & Functions - Quintex QA-0115-0125-1076 Betriebsanleitung

Betriebsanleitung / Operation manual
IRM...Exd - Kapillarrohrthermostat / Capillary thermostat
7. Settings & Functions
When used as a safety device for explosion protection in compliance with
EU Directive 94/9/EC Annex II Clause 1.5, there has to be made a function test in
accordance with the applicable requirements.
The installer must establish the switching point in a routine thermal test.
Attention should be paid to:
 probe geometry & thermal coupling
 max. ambient temperature
 max. product temperature
a) Setting the limit value in accordance with the scale
Use the internal scale to set the limit value on the setpoint adjuster.
b) Setting the limit value in accordance with installation specific operational
characteristics
Heat up the temperature probe – in the plant – to the required temperature
(at least 5 minutes long) monitoring the exact temperature on the probe by using a
calibrated reference measuring device.
Turn the set-point adjuster from the scale limit value towards the scale start value,
determine the required switching point position.
c) Response to measuring system fracture
If the measuring system is destroyed (i.e. the expansion liquid leaks) the switch
mechanism will be permanently closed.
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