EUTECH INSTRUMENTS CD 650, Инструкция по эксплуатации

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117
Close
Open
Installation tool
Insert installation
tool into slots on
membrane lock.
Then unscrew
membrane lock
from membrane
cap
Figure 64: Use tool to take
out (or put in) membrane
10. Using the installation tool, screw the membrane lock back into the cap.
Tighten the lock firmly over the membrane and O-ring, but do not over
tighten.
11. Inspect the membrane for wrinkles. If wrinkles exist, remove the
membrane and repeat steps 8 – 11.
12. Fill the membrane cap with water and inspect the bottom for leaks. If
water drops are leaking from the membrane, re-seal the
membrane on the O-ring (repeat steps 8 – 11, for
membrane replacement only).
13. If the assembly is leak-free, empty the water and fill the
membrane cap with electrolyte to the brim.
14. Tap the side of the housing gently to remove any air
bubble that may be sticking to the membrane.
15. Screw the cap onto the probe. Excess electrolyte will
drain out.
16. Replace probe guard.
17. Calibrate the probe after the % saturation readings
have stabilised.
3.2.5 Electrolyte Solution
The electrolyte solution in your probe’s cap will deplete on usage and will
need to be replaced periodically.
Your new DO probe comes with accessories of one replacement
electrolyte solution and a spare membrane cap. The replacement
electrolyte comes premixed and ready to use. To order more electrolyte
solution, see “Accessories” section.
-END OF D.O. SECTION-
NOTES
Note: Membranes can only be used once. When a membrane cap is
screwed onto the probe, the membrane is stretched by the cathode. If the
same O-ring and the membrane is used a second time it will not fit perfectly
onto the cathode. This will result in erratic readings.