Hardy HI 3010 Filler/Dispenser Controller User Manual
Page 120
HI-3010 Filler/Dispenser/IBC
104
Service Manual
F - Verify Individual Load Cell Milli-Volt
Readings
F
Using a Multimeter
Physically lift the
signal leads to read
each load cell’s
output.
Check individual
load sensor
output mV
readings.
Check load sensor
Record load
sensor mV
output level for
comparison.
Repeat for all load
sensors
MV
readings
acceptable?
MV
readings
acceptable?
MV
readings
acceptable?
MV
readings
acceptable?
MV
readings
acceptable?
Using the load cell certificate, verify the milli volt per volt rating
Example: 3 mV/V load cells will produce approximately 15 mV at full load.
That is 5 volts excitation x 3 mV/V. A scale capacity of 1,000 lbs with 100 lbs
of dead load at empty the load point mV reading should equal 1.5 mV
1) No dead load.
Apply load and re-test.
2) Wiring error.
Verify color code using the
load cell certificate.
3) Open bridge circuit.
Disconnect power and verify
load point bridge resistance
reading with an Ohmmeter.
1) Stressed load cell, remove
all load and re-test.
2) Excessive loading.
For additional
testing go to:
H
K
A
Defective load cell?
Replace and repeat
Test F
If you were unable to determine the
Milli-volt readings. Go to
K load sharing
or
Contact Technical Support
TEST COMPLETE
NEXT
NO
YES