Diagnostics and troubleshooting
Teqwave H
70
Hauser
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 its configured
permitted range.
•
Calibration range limits exceeded/undershot:
At least one of the measured variables (temperature or concentration)
has breached its permitted 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:
Ensure that the sensor is connected to the transmitter via the connecting cable.
12.3 Diagnostic 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 medium 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 medium 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 the recommended mounting position into
consideration → 20.
"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 medium 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 storage faulty"
Buffer battery is not charged.
1.
Supply power to the transmitter for a few hours.
2.
Then restart the transmitter.
3.
If the error persists, contact the
Hauser Service.
