Badger Meter M-Series M3000 - Manual (Page 14)

14
2. For applications with remote amplifi er (amplifi er is
located in non-submersed location)
• The screw-on cover gasket of the junction box mounted
to the detector must be clean and undamaged prior to
screwing the cover onto the junction box housing.
• The screw-on cover of the junction box housing mounted
to the detector must be screwed on tightly (note: hand
tightening is suffi cient, over tightening of the cover may
result in damage to the cover or the housing
• The four screws that attach the junction box assembly to
the detector neck must be fi rmly tightened.
• Cable glands that are screwed into the NPT connections
located on the junction box housing must be fi rmly tighte-
ned.
• Cable glands that are screwed into the NPT connections
located on the junction box 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: both NPT connections of the
junction box 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.
All of the above points must be strictly followed for NEMA
6P (IP67) service. Failure to comply could possibly result
in an electrical hazard and/or damage to the fl ow meter.
Output Wire Connections
· Properly trained personnel must perform all
installation and/or repair procedures.
· Disconnect power to the unit before attempting any
installation or maintenance.
To connect control signal wires:
1. Remove the connections chamber cover. If necessary,
use a strap wrench.
2. Remove the two terminal block wire port access screws.
3. Connect output wires to processing equipment.
4. Group and place output wires in conduit. Position conduit
at amplifi er terminal block wire ports.
5. Connect conduit to control output signal wires ports.
6. Run output wires through wire ports, into amplifi er
terminal chamber.
7. Strip output wires back ¼ inch (6mm).
8. Connect output wires to terminals (see below).
NOTE: Use twisted pair shielded wire for all output wiring.
Belden #1266A or equivalent.
Amplifi er Output Wire Terminal Block Connections:
Reference Control Signal Wiring Diagrams on next two pages.
Terminal 1 +18V DC –
Function: 50mA max supply
Terminal 2 input 1 (+) – Input –
Functions: reset, positive zero return
Terminal 3 Output 1 (+) – Programmable Passive output to
Badger
® external counter
Functions: forward pulse, AMR pulse, fl ow set point, error
alarm, empty pipe, fl ow direction
Active Output to external counter
Terminal 4 – Commom fi eld ground
Terminal 5 – Output 2 (+) – Programmable transistor
output – Passive output to Badger
® external counter
Functions: reverse pulse, frequency output, preset output,
fl ow set point, error alarm, fl ow direction
Active output to external counter