wtw inoLab Multi 9310 IDS, Руководство по эксплуатации, Страница: 101 / 114

inoLab
®
Multi 9310 IDS What to do if...
ba75937e10 08/2021
101
Error message,
OFL
Measured values too
low
Measured values too
high
15.5 General topics
Sensor symbol
flashes
– Incorrect calibration,e.g.:
– Unsuitable calibration stan-
dard solutions (e.g. too old)
– Unsuitable calibration envi-
ronment (e.g. gas bubbles,
reflection, light)
– Check the calibration
– Minimum depth of immersion not
observed
– Heed the minimum depth of
immersion of the sensor
(2 cm)
Cause Remedy
Cause Remedy
– Measured value outside the
measuring range
– Select a suitable measuring
medium
Cause Remedy
– Measurement window soiled – Clean the measurement
window
Cause Remedy
– Reflection at the walls or bottom
of the measuring vessel
– Keep the minimum distance
of the sensor towards the
walls and bottom of the
measuring vessel (see sec-
tion
9.1.1 M
EASURING THE
TURBIDITY
,
page 62)
– Incidence of light – Use a light-proof measuring
vessel
More information and instructions on cleaning and
exchange of sensors are given in the documentation of
your sensor.
Cause Remedy
– Calibration interval expired – Recalibrate the measuring system