YOKOGAWA AXFA14G - Page 38

<4. Wiring>
37
IM 01E20A01-01EN
NOTE
• For excitation cables, always use a crimp terminal
with an insulation cover.
• Use crimp tools from the manufacturer of the crimp
terminal you want to use to connect the crimp
terminal and cable.
• Use crimp tools that are appropriate for the
diameter of the cable to be connected.
4.2.3 Wiring Ports for Remote Flowmeter
This instrument is of watertight construction as stipulated
inJISC0920.Itisshippedwithawiringbracket
(waterproof gland or waterproof gland with union) or a
plastic gland attached, only in cases where an optional
specicationisselectedforthewiringport.Incaseofthe
explosion proof type, refer to chapter 10.
IMPORTANT
The wiring port is sealed with a cap (not waterproof).
Do not remove the cap from the unused wiring port.
If waterproof property is necessary, apply a blanking
plug to the unused wiring port.
The blanking plug may not be attached depending on
thespecication.
If it is necessary, contact YOKOGAWA.
(1) When waterproof property is unnecessary
(When there are no particular optional
specications)
The wiring port is sealed with a cap (not water-proof) that
must be removed before wiring. At this time, handle the
wiringportinaccordancewiththeJISC0920mentioned
above. Do not remove the cap from the unused wiring
port.
(2) When waterproof property is necessary
(Wiring using waterproof glands)
IMPORTANT
To prevent water or condensation from entering the
converter housing, waterproof glands are recommended.
Do not over-tighten the glands or damage to the cables
may result. Tightness of the gland can be checked by
conrmingthatthecableisheldrmlyinplace.
Forworkingontheelectricwiretubesortheexibletubes
(G1/2), remove the waterproof gland and attach them
directly to the wiring port.
Cable
Waterproof gland
Gasket
Washer
F0420.ai
Figure 4.2.4 Waterproof Gland (Optional code EG)
Gasket
Washer
Tightening gland
Cable
G1/2
When working on conduit pipes or flexible pipes (G1/2 only)
F0421.ai
Figure 4.2.5 Waterproof Gland with Union Joint
(Optional code EU)
F0422.ai
Plastic gland
Gasket
Figure 4.2.6 Plastic Gland (Optional code EP)
(3) Conduit Wiring
When wiring the conduits, pass the conduit through the
wiring connection port, and utilize the waterproof gland to
preventwaterfromowingin.Placetheconduitpipeon
an angle as shown in Figure 4.2.7
Install a drain valve at the low end of the vertical pipe, and
open the valve regularly.
Drain valve
F0423.ai
Figure 4.2.7 Conduit Wiring
Wiring
4