HCC(HPC)-96RF-R Series
HITROL CO., LTD. 9
■ Failure Check
- Is the power connection correct?
- Is the power voltage supplied correctly?
- Is the cable wiring correct?
- Is the
Fail-Safe
mode transition correct?
Operation Status
Cause
Solution
The measurement was detected
by the detector, but the LED is
still in yellow.
- The lead wire is not connected
between probe and amplifier.
- Connect the lead wire.
- There is an abnormality in the
detection circuit.
- Replace the board.
The measurement was not
detected by the detector,
but the LED is red.
- The sensing part contacts
the case or the ground.
- Check if installation is
successful.
- There is an abnormality in the
detection circuit.
- Replace the board.
The detect LED works but
output relay does not work.
- Dip switch for Fail-Safe contact
is abnormal.
- Replace the dip switch.
- Output relay drive transmitter
is abnormal.
- Replace the board.
- Relay contact is damaged.
- Check the condition of the relay
contacts and the maximum load
on the external switch circuit.
The measurement cannot
detected.
- Sensitivity setting is wrong.
- Readjust in accordance with
sensitivity adjustment sequence.
- The measurement has high
conductivity.
- Use a concealed sensing part.
The detector was corroded.
- Corrosion occurs due to
chemical action.
- Use a concealed sensing
part to prevent corrosion.
The detector eroded or
worn out.
- Sensor is physically damaged
because of the high speed of
the measurement.
- Change the material or
structure of the sensing part
and replace the installation
location.
■ Adjustment of
Fine
Variable Resistor According to Measuring Object
- Ultra-high sensitivity (∠c 1pF): Set when detecting very light and almost no dielectric constant.
- High sensitivity (∠c 2pF): Set when detecting light, low dielectric materials such as plastic grains and dry grains.
- Medium sensitivity: Set when detecting heavy or dielectric liquids such as cement, moist grain, and
petrochemical product.
- Low sensitivity (∠c 10pF): Set when detecting most aqueous solution and high dielectric materials.
■ High and Low Limit Settings and Output
Limit
Measurements
Red
Green
High
Contact
On
Off
Non-contact
Off
On
Low
Contact
On
Off
Non-contact
Off
On
Failure
Check
