Yokogawa GD40 Gas Density Detector - Manual (Page 36)

<2. Installation, Wiring and Piping>
2-13
IM 11T3E1-01E
<GD402T, V, R>
F0214.ai
A B
D E
C
F
Grounding terminal (M5)
Six wiring holes, G3/4 threaded (GD402R)
1/2 NPT threaded (GD402V, T)
56
(2.2)
54
(2.1)
39
(1
.5
)
24 (0.9)
56
(2.2)
Cable gland
A
B, C
D
E, F
Connection
• Power Supply
• Contact Output
• Detector
• Pressure Transmitter
• Analog Output • Contact Input
Unit : mm (in.)
(3) The following explains the general wiring procedure for each type of converter.
<Wiring the GD402T, V, R converter>
CAUTION
The rear cover and the metal plugs at the external-wiring connections are fixed onto the convert-
er case with hex setscrews. Before removing the cover, be SURE to loosen the setscrews. If you
rotate the cover or a plug without loosening the setscrews, their threads may be severed, making
the cover unremovable.
When the rear cover or any of the cable glands or plugs are removed, handle them with utmost
care so that the threads are not damaged. When re-attaching it on to the converter, clean the
threads so they will not be damaged due to such foreign matters as dust.
• Loosen the setscrews and remove the rear cover by rotating it counterclockwise.
• Guide the required external-wiring cables through the cable glands to the converter.
Exercise care so as to avoid connecting them with the wrong polarities.
• After wiring, securely fasten the rear cover and cable glands.
<Wiring the GD402G converter>
• Loosen the setscrews in the four corners and remove the front cover.
• Remove the terminal cover. Guide the required external-wiring cables through the cable
glands to the converter. Beware of the correct polarities.
• After wiring, reinstall the terminal cover and front cover in place.