< 2. Installation, Piping and Wiring >
2-5
IM 12B07N01-01E
F2.9E.ai
Flowmeter
Stop Valve
Stop Valve
Process Piping
Cleaning Piping
Drain Piping
Check
Valve
Stop
Valve
Solenoid
Valve
Stop
Valve
1. Install stop valves upstream and downstream of the
flow-through holder to allow ease of maintenance.
2. Install a check valve before the flow-through holder
as necessary.
Figure 2.9
When the Solution has a Pressure
Flow-Through Holder
Drain Pan
F2.10E.ai
Figure 2.10
Cleaning the Flow-Through Holder
2.3
Installing the Sensor
Refer to the separate manual describing the sensor to be used.
2.4
Cleaner Piping
This section applies only to the submersion type holder with cleaner.
2.4.1
Piping Precautions
(1) Provide a slight slack in a flexible tubing between the cleaner and a mating device to allow
ease of maintenance.
(2) Determine the cleaner pipe size to allow sufficient flow and pressure. Use nominal 15
mm pipe for air cleaning piping. If the water/jet cleaner pipe or water/brush cleaner pipe is
subject to freezing temperature during winter, cover it with a suitable insulation material.
(3) Use a normally-open (opens when relay is energized) nominal 15 mm diameter solenoid
valve for the cleaning line. The solenoid valve supplied by Yokogawa meets the following
specifications.