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Section 3: Calibration
3.1
Setpoint Control
POWER
GREEN
ALARM
OUTPUT CURRENT
8mA - ALARM
16mA - NORMAL
22mA - FAULT
8mA - NORMAL
16mA - ALARM
5mA - FAULT
FAILSAFE
FAILSAFE
WARNING:
Before removing the explosion-proof housing cover in a
potentially hazardous area, make certain that the area is safe.
When calibration is complete, the cover must be replaced.
There is a single adjustment located on top of the instrument
that controls the point at which the Alarm / Normal condition
switches. A Red LED indicates the Alarm condition.
Each revolution of the control changes the operating point
approximately 4 pF. (For high-sensitivity models, each
revolution will change operating point approximately 1 pF.)
Turning the adjustment clockwise will raise the level at which
the Alarm / Normal condition switches. Turning the adjustment
counterclockwise will lower the level at which the Alarm /
Normal condition switches. Refer to Figure 3-1 and Section
3.3.
CLOCKWISE WILL RAISE
OPERATING LEVEL
COUNTERCLOCKWISE
WILL LOWER OPERATING LEVEL
RED
UNUSED
HLFS
LLFS
HLFS
LLFS
PRESS FOR FUNCTION CHECK
Figure 3-1
SetPoint Adjustment
SETPOINT
(25 Turn)
0-60 SECONDS
REV
TD
FWD
POST
REV
TD
FWD
15
Calibration
DIFFERENTIAL
CLOCKWISE TO RAISE
DIFFERENTIAL
(25 Turn)
COUNTERCLOCKWISE
TO LOWER DIFFERENTIAL
TP1
TIME DELAY
0
60
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