Wiring methods and practices are to be made in accordance with the NEC (National Electrical Code®) and/or other local
ordinances that may be in effect. Consult the local electrical inspector for information regarding wiring regulations.
When making connections to the field wiring terminals inside the flow meter, strip back the wire insulation approximately
0.25 inch (6 mm). Stripping back too little may cause the terminals to clamp on the insulation and not make good contact.
Stripping back too much insulation may lead to a situation where the wires could short together between adjacent terminals.
Wires should be secured in the field wiring terminals using a screw torque of 0.5…0.6 Nm.
If using the DC ground terminal as a protective conductor terminal, apply the protective conductor first and secure it
independently of other connections. Connect the protective conductor so it is unlikely to be removed by servicing that does
not involve the protective conductor or post a warning requiring the replacement of the protective conductor after removal.
Power the TFXL meter with a Class 2 direct current (DC) power source. The power source should be capable of supplying
12…28V DC at a minimum of 250 milliamps. With the power from the DC power source disabled or disconnected, connect the
positive supply wire and ground to the field wiring terminals in the flow meter. See Figure 8 on page 14. A wiring diagram is
on the inside cover of the meter enclosure.
MPORTANTI
• FOLLOW INSTRUCTIONS TO PROVIDE SAFETY OF EQUIPMENT AND/OR PERSONNEL.
• MUST BE OPERATED BY A POWER SUPPLY SUITABLE FOR THE LOCATION.
• DO NOT CONNECT OR DISCONNECT EITHER POWER OR OUTPUTS UNLESS THE AREA IS KNOWN
TO BE NONHAZARDOUS.
• DO NOT CONNECT THE INTERFACE CABLE BETWEEN A TFXL METER AND A PERSONAL COMPUTER UNLESS THE AREA IS
KNOWN TO BE NONHAZARDOUS.
Transmitter Installation
Page 12 April 2016TTM-UM-00369-EN-03
To Next Page
Loading...
