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l When a general purpose reserve tank is used.
First, mount the reserve tank on the holding hardware with the tube connection part directed
downwards. Using the pin supplied with the tank, make several holes in its top (see Figure 2.3).
Stand the sensor upside down at a position lower than the reserve tank as shown in Figure 2.3
so that KCl solution flows from the tank into the sensor. When the KCl solution fills the sensor
and overflows from the liquid junction mounting hole, securely screw the liquid junction into the
mounting hole.
l When a reserve tank for medium pressure is used.
First, fill the reserve tank with KCl solution (*1). Loosen the nut on the reserve tank upside and
remove the cap — the pressure gauge is mounted — and pour about 250 mL or KCl solution into
the tank. Stand the sensor upside down at a position lower than the reserve tank so that solution
flows from the tank into the sensor. When the KCl solution fills the sensor and overflows from the
liquid junction mounting hole, securely screw the liquid junction into the mounting hole. Remount
the cap of the reserve tank. Tighten the nut securely.
*1:
Use 3.3 mol/L KCl solution. If KCl powder (ordered separately) are supplied with the PH8AX accessories, dissolve one bag (60 g)
of KCl powder in pure water to make exactly 250 mL of solution.
(5) Connect the ORP Sensor to its holder. Remove the protective cap from the sensor. Also remove
the protective foam piece (for shipping - this is not necessary after installing the sensor) from the
holder. Be sure that the liquid junction and indicator electrode are mounted properly. Insert the
sensor tip into the holder and tighten the sensor fixing nut securely (see Figure 2.10).
Fixing Nut
Flow-through Holder
Figure 2.12
Installing Sensor in Flow-through Holder
ORP Sensor
O-ring
2-inch Mounting Pipe
< 2. Installation >
F2.12.ai
IM 12C07J01-01E
2-8
8th Edition : Apr. 27, 2020-00
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