Troubleshooting Inlab® Optiox; Replacement Of The Optiox Sensor Cap - Mettler Toledo SevenGo pro Mode D'emploi

●
Do not use organic solvents or soaps to clean the cap!
●
Cleaning of the lens should only be performed when changing the cap.
8.4 T roubleshooting InLab® OptiOx
Issue
Unable to calibrate
Measurements are unstable
Measurement is too low
Wrong temperature displayed
1 Rinse the sensor thoroughly with distilled water, blot it dry with a lint-free tissue and examine
the cap for scratches or discoloration.
2 Remove the cap from the sensor and make sure that there is no water inside the cap, the
opti c al window is clean and clear, the O-rings are intact and have a thin coating of silicone
grease and the spring contacts are clean and undamaged.
3 If readings continue to be errativ and unstable, a replacement of the cap may be necessary.
8.5 R eplacement of the OptiOx sensor cap
The sensor cap has a lifespan of 1 year once the first measurement is taken. The meter will display
a message "sensor cap expired" when the cap needs to be replaced.
The OptiOx™ sensor contains an internal clock which counts down the 365 day life span of a new
sen s or cap. The countdown begins once the OptiOx™ cap has been attached, the sensor con n ect-
ed to the device and the first measurement carried out. This process cannot be undone once the
first measurement has been carried out.
1 Pull the expired sensor cap off the sensor without twisting. See fig. A.
2 Remove the existing O-rings from the sensor. See fig. B.
3 Use a lint-free cloth to remove any moisture from the sensor body. Make sure there is no
mois t ure in the O-ring grooves.
4 Use your finger to apply a layer of lubricant arount the O-ring grooves. Place the O-rings on
the sensor. Apply another thin layer of lubricant to the O-rings and grooves. Do not transfer
grease to the lens or sensor pins.
5 Gently wipe the lens with a clean cloth and allow it to dry thoroughly. Do not wet the lens area
with water or any other solution. Examine the lens for scratches or dirt.
6 Install a new OptiOx sensor cap onto the optical sensor by aligning the arrow on the cap with
the index mark on the sensor. See fig. C.
Without twisting, firmly press the cap onto the sensor until the cap is flushed with the sensor
body. Make sure that the O-rings are not pinched or rolled between the cap and sensor. See
fig. D.
7 After replacing the OptiOx sensor cap, a vapor-saturated air calibration should be performed.
40 Maintenance
51710917_V02.2011_BA_SG9_98_EnFrEs.indb 38
Recommended Action
Verify the calibration setup and procedure. Make sure that
no water droplets are on the surface of the cap.
Measurements may take longer if the solution tem p er a -
ture is unstable.
Salt may be present in the sample. Set the salinity fac-
tor in the meter.
Verify that the temperature sensor is immersed in the
solu t ion.
21.04.2011 11:46:18