Hanna Instruments HI 8614 - Manual (Page 10)

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ELECTRODE CONDITIONING
AND MAINTENANCE
Reference
Filling Hole
Reference
Filling Hole
Sensitive
Wire
Reference
Wire
Reference
Junction
Glass
Bulb
Glass
Bulb
Reference
Junction
Reference
Junction Reference
Junction
Platinum or
Gold tip Platinum or
Gold tip
Reference
Wire
Reference
Wire
Sensitive
Wire
Glass Body
pH Electrode
Plastic Body
pH Electrode
Plastic Body
ORP Electrode
Glass Body
ORP Electrode
Reference
Wire
PREPARATION
Remove the protective cap.
DO NOT BE ALARMED IF ANY SALT DE-
POSITS ARE PRESENT.
This is normal with electrodes and they will
disappear when rinsed with water.
During transport tiny bubbles of air may have
formed inside the glass bulb. The electrode
cannot function properly under these condi-
tions. These bubbles can be removed by
Please note:
-1000 mV = 4 mA
0 mV = 12 mA
1000 mV = 20 mA
350 mV = 14.8 mA
200 mV = 13.6 mA
275 mV = 14.2 mA
1 mV = 12.008 mA
Note: when the meter is used in conjunction
with the Hanna indicator HI 8512T, or
the controller HI 8720T, the calibration
can also be performed on the indicator/
controller. In this case slight adjust-
ment can be made on the indicator/
controller even if the whole system cali-
bration is advised, always starting from
the transmitter.