YOKOGAWA PUS400G, User Manual, Page: 17 / 31

< 2. Installation and Wiring >
2-4
IM 19C1B3-01E
2.2 Wiring
This section describes types of wiring installed for the PUS400G ultrasonic oscillator and wiring work
procedures type by type.
2.2.1 Types of Wiring
There are three types of wiring installed for the PUS400G ultrasonic oscillator. The ultrasonic vibrator
cable (of a specified length) is attached to the sensor holder of the pH meter.
• Ultrasonic vibrator cable connection (power line for ultrasonic vibrator)
• Power supply wiring
• Grounding wiring
Figure 2.6 illustrates the connecting terminals for these types of wiring.
U1
U2
S
L1
L2
Sensor holder
PUS400G Ultrasonic oscillator
Ultrasonic
vibrator
Ultrasonic vibrator cable
Power supply
Ground (100Ω or less)
Noise filter
assembly *
Dedicated power cable *
* Only for PUS400G-NN-KC
Figure 2.6 External Wiring Diagram
2.2.2 Cable Protection by Conduit
The power cable connected to the ultrasonic oscillator can be protected by conduits to prevent
damage to its coating. In this case a dedicated cable gland with an adapter for conduit connection is
required. The cable gland with an adapter is attached only when requested.
[Mounting Procedure for Cable Gland with Conduit Connecting Adapter]
Remove the cable gland (DIN Pg16 or equivalent) from the cable inlet in the ultrasonic oscillator, and
install the attached cable gland (JIS 15A or equivalent) and the adapter for conduit connection, as
shown in Figure 2.7.
Firmly tighten the gasket to prevent moisture from entering the oscillator through the cable inlet.
49
Approx. 55
G1/2 female ( / AFTG)
1/2NPT female ( / ANSI)
Adapter
Unit : mm
Cable gland
Case
Nut
Packing
Figure 2.7 How to Install Adapter for Conduit Work