3-7
IM 01F06A00-01E
3. WIRING
3.7 Wiring Cautions
(1) Lay wiring as far as possible from electrical noise
sources such as large transformers, motors and power
supplies.
(2) It is recommended that crimp-on type solderless lugs be
used for large wire ends.
(3) For general use, it is recommended that conduits and
ducts or racks be used to protect wiring from water or
mechanical damage. A rigid steel conduit or flexible
metal conduit is recommended. See Figure 3.9.
F030701.EPS
Figure 3.9
3.8 Grounding
IMPORTANT
When a lightning protector (option code: /A) is
selected, use a grounding resistance of 10
Ω
or less.
(1) The grounding terminals are located on the inside and
outside of the terminal area. Either terminal may be
used.
(2) For pulse output version, ground the flowmeter. Also
ground the shielded cable between the converter and the
pulse receiver.
(3) Grounding should satisfy Class D requirements (ground
resistance 100
Ω
or less).
(4) Use 600V PVC insulated wire for grounding.
Integral Type
F030801.EPS
Grounding
terminals
Figure 3.10
