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85198A_Manual of Electrical Installation for Pressure Probes KH-SIL2-Mobyle-series_07-2019_ENG
Failures and troubleshooting
In case of failures or malfunctions, on Table 2 you can find the most common failures and the means of appropriate
search:
Table 2: troubleshooting
Failure
Possible causes
Means of research
The sensor does not feel pressure
Obstruction of pressure
channel
Fault on electronics output
stage
1. Power down and remove the sensor
2. Verify eventual occlusion of the channel
under pressure. Clean any residues and
material caps
The sensor is in alarm mode type
“HIGH”
Bridge broken
Detachment of pins
Failure on primary element
1. Power down and remove the sensor
2. Check for overheating of electronics
housing.
Remove the causes of overheating, wait
until it cools down and power the sensor.
3. Powered the probe again, if the problem
persists, you should send back the probe to
Factory for repair.
The sensor is in alarm mode type
“LOW”
Power supply cable /connector
broken
Sensor not connected
Sensor not powered
Bridge broken
1. Power down and remove the sensor
2. Check that the power supply is connected.
If necessary, restore the power supply.
3. Check for continuity between the pins of
the connector and the power supply.
If necessary, replace the cable and the
connector.
4. Check if the power values are within the
specifications indicated in this manual. If
necessary, replace the power supply.
5. If the problem persists, you should send
back the probe to Factory for repair.
Applications to use the relevant category
The pressure sensors of KH Series may form part of a system for detecting the pressure that, when a threshold value is
exceeded, deactivates all the elements of pressure generation, through a control system.
The diagram “A” (Fig. 1) shows a possible application: the sensor detects the pressure and transduces it in an analog
electrical signal proportional to the value of the measured value; the SRP / CS compares the signal with the one set as
the alarm threshold: in case of exceeding the threshold it shall disable the elements of pressure generation.
VOLTAGE OUTPUT and RATIOMETRIC
CURRENT OUTPUT
Fig. 1: application diagram A
