Troubleshooting - Hach orbisphere C1100 User Manual

13. Rinse the sensor under a tap for about 5 seconds to remove any excess electrolyte, then gently
wipe with a soft tissue to ensure all parts are completely dry. Drain the overflow electrolyte from
the container into a sink and flush away. Discard the used container.
14. Take a new Dacron
the center of the protection cap. It is very important that the mesh is in the center of the protection
cap and covering the entire grille. Lower the sensor onto the protection cap making sure not to
disturb the mesh.
15. Push the protection cap firmly into place, making sure one of the four slots in the protection cap
fits over the small locking pin (highlighted right). If it is necessary to turn the protection cap to fit
over the locking pin, ensure you only turn it clockwise to avoid unscrewing the cartridge.
16. Finally, screw the protection cap locking washer back into place in a clockwise motion, and
tighten finger tight.

Troubleshooting

Ozone sensor
When the O sensor has been properly calibrated using the ORBISPHERE measuring instrument,
3
the sensor has to settle down for up to 24 hours when used in very low O
Problem
Sensor won't calibrate, even after
cleaning and/or membrane
change.
"0000" O levels displayed.
3
Unexpected or incorrect dissolved
O reading.
3
®
mesh patch from the box of O-rings in the recharge kit. Place the mesh in
Probable cause
Instrument internal barometric
pressure sensor needs
calibration.
Wet membrane interface.
Wrong reading scale "XXXX"
selected for display unit.
High residual current.
Insufficient flow rate.
Length of sample line allows
O time to react.
3
Doesn't match lab samples.
concentration conditions.
3
Possible solution
Calibrate internal barometer against a
certified barometer. Do not correct for sea
level !
Wipe dry with a tissue and re-calibrate.
Change reading scale by selecting "X.XXX,
XX.XX or XXX.X".
If concentration is significantly higher than
low limit, try a sensor service.
Regulate flow equivalent to membrane
specified levels.
Reduce length of sample tubing.
Take samples at close proximity to sensor.
English 11