Teqwave F/I Modbus TCP
Diagnostics and troubleshooting
Hauser
57
LED
Signal
Meaning
Flashes
The measurement is not stable and/or at least one of the measured variables is outside the valid range. This can be caused
by the following system conditions:
•
Measuring range limits exceeded/undershot:
At least one of the measured variables has breached the configured
permitted range.
•
Calibration range limits exceeded/undershot:
At least one of the measured variables (temperature or concentration)
has breached the applicable calibration range.
•
Change in temperature too high:
The change in the temperature of the liquid has exceeded the limit value saved in the
transmitter. Wait until the liquid is stable again.
•
Change in concentration too high:
The change in the concentration of the liquid has exceeded the limit value saved in
the transmitter. Wait until the liquid is stable again.
Sensor error
Lit red
Sensor error. Read exact error code with the Viewer. The following errors are possible:
•
No liquid present:
Ensure that there is sufficient bubble-free liquid in the sensor.
•
No sensor connected:
Make sure that the sensor is connected to the transmitter via the connecting cable.
12.3 Diagnostics information on local display and in
operating tool
The transmitter with a touch screen and the "Teqwave Viewer" operating tool indicate
errors and malfunctions by green, yellow and red indicators. Tap this sensor status to
display the current messages in text format.
Signal color
Diagnostic message
Description
Measures
Green
"Sensor status OK"
-
-
Yellow
"Change in temperature >
[
limit value
]"
Temperature of liquid changes too quickly
and configured limit value is exceeded. The
calculated measured value may be incorrect.
Ensure a stable fluid temperature.
"Change in concentration >
[
limit value
]"
Concentration of liquid changes too quickly
and configured limit value is exceeded. The
calculated measured value may be incorrect.
Ensure a stable fluid concentration.
"Process disturbance
detected, dispersion >
[
limit value
]"
The measured dispersion is greater than the
configured switch point.
1.
Remove air bubbles and/or particles.
2.
Take recommended mounting position into
consideration → 16.
"Stationarity"
The concentration of the liquid changes too
quickly and the measured value changes
more frequently within 20 s than allowed by
the statistical uncertainty considered in the
measuring device. Settling processes can
occur. The calculated measured value may be
incorrect.
Ensure a stable fluid concentration.
"Measuring range
[
measured variable
] < ;
[
measured variable
] >:"
The measured value is above or below the
specified measuring range limits.
Select a measured value that is within the measuring
range limits.
"Calibration [
measured
variable
] < ; [
measured
variable
] >:"
The measured value for the displayed
measured variable is above or below the
calibration range of the liquid and may
therefore be incorrect.
Select a measured value that is within the calibration
range.
"Clock and data storage
faulty"
Buffer battery is discharged.
1.
Supply voltage to the transmitter for a few hours.
2.
Then start the transmitter again.
3.
If the error persists, contact Hauser
Service.
Red
"No liquid present"
No liquid present.
Ensure that there is sufficient liquid in the sensor.
Sensor is fouled.
Make sure the sensor is free from dirt and deposit build-
up.
Air bubbles or particles in the liquid.
Remove air bubbles and/or particles.
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