Ametek Drexelbrook ThePoint Series, Инструкция по установке и эксплуатации, Страница: 16 / 70

ThePoint Series
10
2.7 Electronic Unit
Remove housing lid to access status LEDs, time delay
adjustment, and configuration jumpers. See Figure 2-6.
2.7.1 Time Delay
Time delay adjustment is used to avoid an oscillating relay
output due to agitation or waves in the vessel. The time delay
adjustment can be field adjusted from 0 to 60 seconds. Unit is
shipped with time delay setting at zero seconds.
The Time Delay adjustment is a 270-Degree turn pot and is at
zero seconds when in the full counter-clockwise position. Do
not force the pot past the stop or damage will occur.
2.7.2 Time Delay Action
Time delay action describes whether the relay contacts are
delayed from going into the alarm state or recovering from an
alarm state.
•
fwd : delays system from coming out of alarm.
•
rev : delays system from going into alarm.
•
The instrument is supplied with time delay action set in
forward mode ( fwd ) position.
•
Time delay action is field-selectable using the Time Delay
Jumper located on top of Electronic Unit. See Figure 2-6.
Figure 2-6
Electronic Unit Adjustments
Do not push
the Recal button
without first ensuring
that the material
being measured is
below the sensing
element.
Time Delay Adjustment - 0-60 Seconds
Failsafe Jumper
Up = High Level
Down = Low Level
Time Delay Jumper
Up = Forward Acting
Down = Reverse Acting
Green LED = Power
Red LED = Alarm
ReCal Button
Manual Calibration
Adjustment Pot
Pin #1