Basic Guidelines

• Coriolis Mass Flow Meters
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• Operation and Maintenance
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• Wiring
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• Basic Guidelines

Electrical connections should be performed in the following sequence (see Figure 2.11):

• Remove the back cover (1) of the transmitter;
• Lead signal cables (2) and power cable (7) through the cable entries (3)
• Loosen the terminal block screws (4);
• Connect wires according to the wiring diagram shown in Appendix ;
• Tighten the terminal block screws;
• Tighten the clamp for the cable entry;
• If necessary, install the blind plug (5) instead of the unused cable entry;
• Connect the ground cable to the ground terminal (6);

Tighten the cover of the transmitter.

Figure 2.11 – Electrical connections

Table 2.5 – Notes for Figure 2.11

Maximum length of the power cable is 1000 ft (300 m)  with minimum wire section 0.8 mm² (AWG18).

The current and pulse outputs should use a twisted pair wire with a maximum length of 150 m and minimal wire section 0.5 mm² (AWG20).

Remote transmitters are connected through a special 9-conductor shielded cable with maximum length of 1000 ft (300 m.) The connection diagram is shown in Figure C.1 of  Appendix . After mounting and electrical connection the zero point adjustment should be performed (see paragraph 2.5.4 “Zero point adjustment”).