Badger Meter M-Series M3000 - Manual (Page 13)

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Coil wiring in
detector chamber
Coil Wires
Electrode Wires
Red to terminal labeled – C1
Clear to terminal labeled – C2
5. Connect conduit to junction box. Use a NEMA 6P ½ inch
NPT fi tting.
6. Install protective plastic cover over terminal blocks.
7. Attach detector chamber cover.
Cable length between Junction Boxes may be up to 100 feet
(30M).
Coil Wiring in Amplifi er Junction Box
To connect the coil wires in the amplifi er junction box:
1. Strip the cable jacket back 2 inches. (50mm)
2. Strip the 2 wires back ¼ inch. (6mm)
3. Connect the wires to the compression style screw
terminals of the amplifi er junction box.
Electrode Wires
Coil Wires
Coil wiring
in amplifier
junction box
Red to terminal labeled – C1
Clear to terminal labeled – C2
4. Connect conduit to junction box. Use a NEMA 6P ½ inch
NPT fi tting.
5. Install protective plastic cover over terminal blocks.
6. Attach the amplifi er junction box chamber cover.
OUTPUT WIRING
The Badger
® M-3000 Meter converts liquid fl ow into
electrical signal(s). With proper output wiring and amplifi er
programming, the signal(s) are sent to, and used by,
processing equipment used in operations or other
procedures.
NOTE: Output wires and terminals are the same for meter
mount or remote mount meters
Output wiring requires 18 to 22 AWG maximum, shielded
wire (not supplied). Signal wire insulation temperature class
should exceed the maximum temperature where installed
(typical, 185°F, 85°C).
Use conduit and conduit fi ttings (not supplied) rated for Class
I, Div 2 hazardous locations.
NEMA 6P (IP67) Protection
The fl ow meter will fulfi ll all the requirements regarding NEMA
6P (IP67) protection if the following points are observed:
1. For applications with detector mounted amplifi er
(amplifi er is located in submersed location)
• Both screw-on cover gaskets must be clean and undamaged
prior to screwing the covers onto the amplifi er housing.
• Both screw-on covers of the amplifi er housing must be
screwed on tightly (note: hand tightening is suffi cient, over
tightening of the cover may result in damage to the covers
or the housing.
• The four screws that attach the amplifi er assembly to the
detector neck must be fi rmly tightened.
• Cable glands that are screwed into the NPT connections lo-
cated on the amplifi er housing must be fi rmly tightened.
• Cable glands that are screwed into the NPT connections
located on the amplifi er housing must be approved for
NEMA 6P (IP67) service. Additionally, the cable gland must
be the correct size for the outside diameter of the cable
being used. (note: if the cable gland is not the correct size
for the outside diameter of the cable, the gland will not
properly seal resulting in water infi ltration).
• All cables must have a “drip loop” to prevent water from
migrating down the cable into the cable gland.
• If a NPT connection is not used, then a plug equipped with
thread sealant that is approved for NEMA 6P (IP67) must
be used to fi ll the hole. (note: all three NPT connections
of the amplifi er housing come equipped from the factory
with hole plugs incorporating approved thread sealant)
• If a conduit connection is required, then the conduit and the
conduit hub must be approved for NEMA 6P (IP67) service.
• All NPT threads must have thread sealant that is approved
for NEMA 6P (IP67) service applied to the threads prior to
installation.