4/16
Form 759 (04.16) SOR Inc.
Electrical Connections
When the process is adhesive, i.e. it tends to coat the sensor, it may be desirable to mount
it on a 45° angle to reduce product build-up and to increase its effective surface area. (See
and
)
Placement and orientation of the sensor in a vessel is frequently determined by available
nozzles. The sensor should be away from fill points to avoid false trips. The insulator
bushing on the sensor should protrude a minimum of 1” from the inner wall of the vessel.
The sensor must not touch any metal, nor should conductive product build-up be allowed
to bridge between the sensor and a grounded metal tank wall.
This product must be installed with an explosion proof breather vent per
Agency requirements and the National Electric Code-Article 501, Section F,
paragraph 3.
Electrical power must be disconnected from explosion proof/intrinsically
safe models before the cover is removed. Failure to do so could result in
severe personal injury or substantial property damage.
Remove the housing cover. Ensure that all wiring conforms to all applicable local and
national electrical codes and install unit(s) according to relevant national and local
safety codes.
Connect the positive loop power wire to the terminal marked “+”.
Connect the negative loop power wire to the terminal marked “-”.
Replace the cover.
Apply power.
Post-Installation Calibration
Units in Hazardous Locations — Prior to calibration, make certain that the
work area is declassifi ed before removing the explosion proof cover to
calibrate the unit. Failure to do so could result in severe personal injury
and/or substantial property damage.
Turn the set-point adjustment to the full clockwise position. The LED should be off
(in Hi Level Fail-safe mode).
Turn the adjustment slowly counter-clockwise until the LED just changes state (on).
Raise the material level until it is above the sensing element. The LED should be off.
Turn the adjustment slowly counter-clockwise until the LED illuminates. Then turn the
adjustment 1/2 turn clockwise (LED off) to complete the calibration.
