SOR Direct or Remote Mount Explosion Proof UL/CSA/ATEX User Manual

Page 2

2/8

Form 416 (01.13) ©SOR Inc.

Remote-Mount Probe — Capillary
Secure a housing-mounting pad to bulkhead, panel rack or pipe stanchion with suitable
1/4” (6.35 mm) bolts.

Failure to mount the housing on a fl at mounting surface may result in
torsional forces on the housing that could cause false trips or render the
switch inoperative.

When mounting to an irregular or uneven surface, install rubber washers
on bolts between housing and mounting surface to prevent deformation of
the housing, which could change relative positions of internal parts and
affect calibration or render device inoperative.

Mounting by electrical conduit connection is NOT recommended.

Suggested mounting orientation is electrical conduit connection at 3 or 9 o’clock and
sensing body at 6 o’clock. However, the device is not position sensitive and can be
mounted in any position. If a breather drain is installed, it must be oriented at 6 o’clock
(pointing down) so condensation will drain. It must be kept clear of paint and foreign
matter and must carry the same area classifications as the SOR product. Carefully insert
the sensing probe into the process through a suitable fitting or into a thermowell. Adjust
desired insertion length. Tighten the probe hex fitting with a 7/8” open-end wrench and
the capillary hex fitting with a 9/16” open-end wrench for a leak-free fit. Avoid sharp
bends in capillary.

One vent hole (#10,

) should be fi tted with a breather suitable to

maintain weathertight rating NEMA 4, 4X, IP65 or vented to a safe area.
Piping should be minimum 1/4” diameter and maximum 5 meters long
(based on process fl uid SG 1.0). The other vent hole may be plugged.

Installation

This product should be installed by trained and competent personnel only.

Direct-Mount Probe
The temperature sensing probe is rigidly attached to the instrument’s body/housing.
Carefully insert the sensing probe into the process through a suitable fitting or into
a thermowell. The standard process connection is 1/2” NPT(M). Ensure that ample
clearance exists before rotating the instrument housing to make the threaded connection.
Tighten the probe hex fitting with a 1-1/8” open-end wrench for a leak-free fit. A locally
customized mounting bracket may be used if more support is desired. Direct mounting is
not recommended where vibration is expected unless housing is securely mounted to a flat
surface (bulkhead or panel rack) or a pipe stanchion.

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.