Maintenance; Clean The Instrument; Sensor Cleaning; Warning Messages - HACH LANGE sensION+ EC 7 Manuel D'utilisateur

5. Maintenance

6.1. Clean the instrument

Important note: Never use cleaning such as turpentine, acetone
or similar products to clean the instrument including the display
and accessories.
Only clean the housing and accessories using a soft, damp cloth.
Mild soap solution may also be used. Dry the cleaned parts care-
fully with a soft cotton cloth.
CAUTION
When using chemicals or solvents, comply with the instruc-
tions of the producer and all local safety regulations.

6.2. Sensor cleaning

See the manual of the sensor in use.
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sensION+ EC7 HACH_LANGE 0710.indd ANG:10 sensION+ EC7 HACH_LANGE 0710.indd ANG:10

6. Warning messages

During calibration
EC CALIBRATION EC CALIBRATION
UNSTABLE READING ATENTION !
Time t> 100 s
Check temperature.
Repeat with Check the cell.
EC CALIBRATION EC CALIBRATION
ATENTION ! ATENTION !
Difference C > 30 %
Check the cell.
Repeat with Check the standards.
EC CALIBRATION
EC CALIBRATION
SAME BUFFERS ATENTION !
Check the cell.
Repeat with
EC CALIBRATION
STANDARD TEMPERATURE
< 15˚C or > 30 ˚C
Repeat with
EC CALIBRATION EC CALIBRATION
ATENTION ! ATENTION !
C<0.05 or C>50.00
Buffer or cell in
Repeat with poor conditions.
During measurement
MEASURE STABLE
23.2˚C
728
uS/cm @ 25˚C
Calibrate again
MEASURING
by stability
EC
out of range
Check the cell.
MEASURING
by stability
˚C
out of range
Check temp. sensor
MEASURING
by stability
ATENTION ! TC = 0
Impossible to measure
salinity
Exit with
MEASURING
by stability
UNSTABLE READING
Time > 150 s
Check temperature.
Check the cell.
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