Calibration Of Time Delay Units - Ametek Drexelbrook Z-tron Level Control 502-302X Series Installation And Operating Instructions Manual

502-302 Series Z-tron Level Control
X
4.6 Calibration of
Time Delay Units
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Standard time delay units are adjustable over the range of
approximately 0-90 seconds.

—Calibration of Time Delay Units

a. Turn the time delay adjustment to the extreme coun-
terclockwise (CCW) position (i.e. minimum time delay).
b. Proceed with approriate calibration based on type of
sensing element to calibrate operating point.
c. After the instrument is adjusted to the desired operat-
ing point, turn the time delay adjustment clockwise
until the required delay is achieved. If the unit is in
High Level Failsafe mode, the delay will occur with
decreasing level. If the unit is in Low Level Failsafe
Mode, the delay will be with increasing level.
With the material level well below the sensing ele-
ment, you can observe the operation of the time delay
by touching the center wire connection (blue) at the
electronic unit.
CALIBRATION IS COMPLETE.
18
Calibration