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When a medium pressure reserve tank is used, proceed as follows to supply the reserve tank
with KCl solution. Loosen the nut on the reserve tank upside and remove the cap - the pressure
gauge mouted. Supply the reserve tank with about 250 mL of KCl solution. Loosen the reference
electrode air exhaust plug and allow KCl solution to flow from the reserve tank into the sensor.
Plug the air exhaust port if the KCl solution overflows. Install the reserve tank cover and tighten
the nut. 3.3 mol/L is used as KCl solution.
Tip
The KCl solution can be prepared from KCl powder, Yokogawa's PH8AX accessory.
Dissolve one bag of KCl powder (62 g) in deionized water and dilute to 250 mL.
(5)
Set the pH sensor in the holder.
Remove the shipping materials after installing the sensor. Replace a fluoride rubber O-ring with
a Tetrafluoroethylene O-ring as needed. Insert the sensor tip into the holder and tighten the nut
that secures the sensor.
pH Sensor
Sensor Fixing Nut
Flow-Through Type Holder
Figure 2.6
nstalling the Sensor Using a Flow-Through Type Holder
< 2. INSTALLATION >
Sensor Fixing Nut
Washer
O-Ring for sealing
2-inch pipe
F2.6E.ai
IM 12B7J3-01E
2-4
7th Edition : Nov.20,2018-00
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