Hach-Lange TSS PORTABLE Handheld Instrument for Turbidity_Suspended Solids Manual - Manual (Page 31)

Problem/display screen Caused by Action
Communication with probe
EEPROM error
Overflow area
Clean the probe
Offset error
Calibration error
Calibration insufficient –
Calibration insufficient +
Probe error
Battery is empty
Incorrect probe
Error time/date
Display Caused by Measure/note
Wait
Manufacturer standard
31
Section 7 Troubleshooting
7.1 Error messages
The probe is not connected to the
instrument
– Plug in the probe
– Check the connection to the probe
– Correct probe number
Values cannot be saved
Switch the instrument off and then back
on again
Concentration too high
– Probe is measuring in an unsuitable
medium
– It may be necessary to recalibrate
Probe is dirty
– Clean the probe
– May be triggered by inhomogeneous
measuring medium
Calibration point set incorrectly
(calibration point too close to the zero
point)
Recalibration required
No calibration available, calibration
points set incorrectly (upper and lower
calibration points transposed) Recalibration required. (1-point default
calibration of DS curves not sufficiently
precise for measuring medium)
Further calibration point with lower
concentration is missing Further calibration point with lower
concentration is required
Further calibration point with greater
concentration is missing Further calibration point with greater
concentration required
Technical error in the probe
– Switch the instrument off and then
back on again
– If the message is repeated, send the
probe for repair
Battery not charged Charge the battery fully
Probe has been replaced but not
re-registered or correctly registered on
instrument – Connect the correct probe
– Use code 390 to release DS curve for
new probe and recalibrate
Time/date implausible
– Switch the instrument off and then
back on again
– Check the time/date set
– If required, change the clock
batteries
1 )
1 If the message is repeated, send the instrument for repair
7.2 Informative messages
Calibration is being recorded Wait (probe in calibration medium)
Measurement value is outside the
standard (only for turbidity) Value is above the DIN standard of
4000 FNU (NTU)