< 4. OPERATION >
4-4
IM 12A0V2-E
4.4 ST401G-FC4-N-A/AZC (With auto zero calibration
for free available chlorine analyzer)
Open ball valve (BV1) completely. (BV3) closed. Adjust ball valve (BV2) and needle valve (NV1) and
make the fl ow rate into free available chlorine detector between 0.1 and 2.5 l/min.
(BV3) is used for manual zero adjustment and washing. To stabilize the zero fi lter with water, refer to
Sec. 6.2.7 of IM 12F5A1-01E.
Refer to Figure 4.4 for piping.
(VP40)
Drain
=
=
=
=
=
=
=
=
=
=
BV2
NO
COM
NC
F1
SV1
X
NV1
FCC
=
X
(VP16)
Measuring water
=
FCD
BV1
PR1
BV3
PVC tray
<Tubing materials>
=
=
XX
φ22 / φ15 soft tube with net
VP16 pipe
pipeVP40
φ6 / φ4 Polyethylene tube
BV1,2,3 : Ball valve
PR1 : Pressure-reducing valve
FCC : Free available chlorine converter
FCD : Free available chlorine detector
NV1 : Needle valve
F1 : Activated charcoal filter
SV1 : 3-way solenoid valve
Figure 4.4 Piping diagram of ST401G-FC4-N-A/AZC
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