Nordson Mesa Fulfill, Customer Product Manual

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RetroFit Refill System with Nordson Level Sensor
A-2
Part 1121938_02 2013 Nordson Corporation
Push Button Calibration
The Nordson level sensor uses two push buttons to set levels as opposed to
the previous level sensor’s potentiometer.
Two buttons on the Refill board provide two types of calibration. Information
on calibration can be found later in this section.
The level sensor uses the calibration points to control the level of adhesive in
the tank. The system determines the appropriate fill level based on the
calibration information. When the tank is less than this point, the fill system
turns on. When the tank level is higher than this point, the fill system turns
off.
RTD Temperature Compensation
Most capacitive sensor readings will vary with temperature. To minimize
sensor reading inaccuracies due to temperature effects, the Nordson level
sensor incorporates a RTD to accurately measure the probe temperature and
to compensate for changes in probe temperature.
Sensor Diagnostics
The Nordson level sensor offers several diagnostic functions not present in
the previous Fulfill level sensor. These new diagnostic functions are reported
with LED flash codes. The flash codes are displayed on the membrane
panel.