Leakwise ID-220 SERIES User Manual page 35

•
Hysteresis for all Thresholds
This is a value (in μA) above and below each of the crossing points between adjacent
status indications. This value introduces a Hysteresis window around each crossing point
to prevent bouncing between two status changes and unstable operation of relay outputs.
This value if 5 μA as default, but can be changed (see SLC-220 Advanced Settings).
•
Over range Delta
This is a value (in μA) above Water Calibration. If measured sensor's signal is higher than
Water Calibration + Over Range Delta + Hysteresis, the status will be FAIL:
SIGNAL TOO HIGH.
•
Under Range Set Point
This is an absolute value (in μA) that indicates an abnormal low sensor signal value limit. If
measured sensor's signal is lower than Under Range Set Point - Hysteresis, the status will
be FAIL: SIGNAL TOO LOW.
All the following calibration rules must always be valid to enable the system to perform
correctly:
• Water Calibration > Air Calibration
• Oil Delta < High Oil Delta
• (Water Calibration - High Oil Delta - Hysteresis) >
• Under Range Set Point < Air Calibration
The SLC-220 will give a feedback if the rules are violated and will reject such wrong settings.
Note:
The SLC-220 is factory set and calibrated according to the supplied sensors or to typical values of
the supplied sensors. The minimum settings that should be done after installation are: Water
calibration, Air calibration, Oil Delta and High Oil Delta.
NOTE:
Refer to sensor User Guide for specific notes related to floatation and calibration.
SLC-220 User Guide Rev 2.0
Important Note:
(Air Calibration + Air Delta + Hysteresis + 10 μA)
35
June 2018