Ametek IntelliPoint RF RML Series Installation And Operating Instructions Manual page 28

IntelliPoint RF RML Series
3.3.7 Low Level Fail Safe Blind Calibration of Control w/Flush Sensing
Element
(Alarm when chute is empty at sensor)
RED LED
ON
RED LED
OFF
1/4 TURN MAX.
ON TO OFF
DRY INSULATING
POWDERS
MOIST
GRANULARS
A. Start with sensing element uncovered, (no material
at sensing element), and tuning adjustor full
counterclockwise (ccw). Red LED will be OFF.
B. Turn adjustor clockwise (cw) until LED just turns ON.
C. Test unit by turning adjustor slowly counter-clockwise
(ccw), then clockwise (cw) to determine differential of the
electronics.
If ON/OFF differential of LED is more than one quarter
turn, unit is not operating correctly. Please consult
factory service department for assistance. This is a simple
function test of the electronics.
D. If above operation is satisfactory, then continue turning
adjustor clockwise (cw):
• One (1) turn for granulars containing moisture. (1 = 4PF)
• One half (1/2) turn for dry insulating powders.
Calibration is Complete
When excessive build-up on sensor occurs, turning adjustor
clockwise will generally eliminate a false high-level signal.
Build-up may continue to form, or, it may drop off. If the build-
up drops off, the sensing element may cease to respond when
material reaches it. This should be discussed with factory
service. Call 1-800-527-6297.
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Calibration