YOKOGAWA FC500G, User Manual, Page: 17 / 41

<3. INSTALLATION, PIPING, AND WIRING>
3-2
IM 12F5A2-01E
3.1.2 Mounting
Mount the FC500G free available chlorine analyzer (non-reagent type) on a wall surface. For
mounting holes, see section 1.3.
3.2 Piping
3.2.1 Sample Water Piping
Connect a 6 mm OD X 4 mm ID polyethylene tube to the sample water inlet. Set the sample
water pressure at the sample water inlet to 1 to 30 kPa (flow rate: 0.1 to 2.5 l/min).
Note: If a sample water inlet valve is used, set the pressure at the valve inlet to 10 to 150 kPa.
Connect a hose of 12 mm lD to the sample outlet. Make piping so that no drain stagnates in the
hose.
3.2.2 Air Purge Piping
Make the air purge piping only when the FC500G-5 free available chlorine analyzer is used.
The air purge piping connecting port (1/8 NPT female) is located at the electrode assembly.
Exercise care in piping because the electrode assembly must be removed in implementing
inspection or maintenance (see Figure 3.2).
Inspection or
maintenance
Electrode
assembly
Measuring
tank
Detector
Pressure regulator
6 mm OD X 4 mm ID
polyyethylene tube
Air supply
Figure 3.2 Air Purge Piping