YOKOGAWA UV700G, User Manual

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<App.3 Piping>
App.3-1
IM 12K01B02-01E
App.3 Piping
App.3.1 Piping procedure
• When there may be pipe freezing, install a pipe warming device.
• To prevent backpressure, make the exit-side pipes as short as possible. In addition, the pipe
exit must allow the air to flow out freely, and must not be submerged in water. Do not install
the pipe vertically.
• Before connecting the device, make sure to flush the sampling line.
Overflow tank
Overflow line (2)
Overflow line (1)
Sample line
Bypass line
Sampling pump
Drain line
Discharge line
Measuring cell
Air release
4
3
1
2
5
6
V-1
V-3
V-2
V-4
Fig.14 Piping
• Refer to the following table for diameters of the pipes and the pipe connectors.
Table 3 Diameters of pipes and pipe connectors
Connector name Pipe connector
Nominal pipe diameter
(When a standard hard vinyl chloride pipe is used)
Sample water inlet Rp 1/2 socket 13 mm or larger
Bypass outlet Rc 1/2 socket 13 mm or larger
Overflow outlet (1) Port diameter 13A socket 13 mm or larger
Overflow outlet (2) Port diameter 20A socket 20 mm or larger
Drain outlet Rc 1/2 socket 13 mm or larger
Discharge outlet Port diameter 50A socket 50 mm or larger