SOR Mini-Hermet Explosion Proof User Manual
Page 3
Form 169 (02.13) ©SOR Inc.
3/12
Process Connection
The temperature sensing probe is 300 series stainless steel. If the process is
compatible, it may be directly inserted into the process without the use of a thermowell.
Best results are obtained when the probe is completely immersed in the process.
A thermowell increases response time (lag). A thermowell filled with thermal transfer
media reduces lag.
Safety Integrity Level (SIL) Installation Requirements
The SOR pressure switches have been evaluated as Type-A safety related hardware.
To meet the necessary installation requirements for the SIL system, the following
information must be utilized:
Proof Test Interval shall be one year.
Units may only be installed for use in Low Demand Mode.
Products have a HFT (Hardware Fault Tolerance) of 0, and were evaluated in a
1oo1 (one out of one) configuration.
Form 1538 (03.12) ©2012 SOR Inc.