Hach ORBISPHERE Manual Básico Del Usuario página 12

Membrane replacement and sensor head cleaning
A sensor recharge kit (see
components necessary for this membrane replacement and sensor head cleaning process.
Chemical exposure hazard. Obey laboratory safety procedures and wear all of the personal protective
equipment appropriate to the chemicals that are handled. Refer to the current safety data sheets
(MSDS/SDS) for safety protocols.
Note: It is advisable to perform this procedure with the plastic sensor base installed so as to avoid any damage to
the connection socket and also to provide a suitable stand for the sensor when required.
1.
1. Hold the main body of the sensor and unscrew the protection cap locking washer by turning
counter-clockwise. Remove it from the sensor and put to one side.
2. Pull/twist off the protection cap and put to one side. If you are using a protection cap with a grille,
then remove the Dacron
3. Hold the sensor with the membrane facing down to avoid spilling any electrolyte, then carefully
unscrew the old cartridge. Drain the old electrolyte into a sink and flush away. Discard the old
cartridge and membrane. Remove the cotton washer and silicone disc from the top of the anode
and discard.
4. Rinse the sensor head under a tap for 15 seconds to remove any remaining electrolyte and shake
dry. With a soft tissue gently clean around the guard area (indicated right) and then wipe off any
excess moisture from the sensor to ensure all parts are completely dry. Repeat this rinse and dry
process with the protection cap.
12 English
Sensor recharge kit on page 7) is required as it contains all the
C A U T I O N
2.
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mesh from inside the cap and discard it.
3.
4.