Endress+Hauser FOUNDATION Proline 500 digital, Краткое руководство по эксплуатации

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Flowmeter Proline 500 – digital Electrical connection
Hauser 29
5.3.2 Promag P and Promag W
For devices intended for use in hazardous locations, please observe the guidelines in the
Ex documentation (XA).
Metal, grounded pipe
A0016315
 3 Potential equalization via measuring tube
Unlined and ungrounded metal pipe
This connection method also applies in situations where:
• The customary potential equalization is not used
• Equalizing currents are present
Ground cable Copper wire, at least 6 mm
2
(0.0093 in
2
)
DN 300
≤
DN 350
≥
A0029338
 4 Potential equalization via ground terminal and pipe flanges
1. Connect both sensor flanges to the pipe flange via a ground cable and ground them.
2. If DN ≤ 300 (12"): Mount the ground cable directly on the conductive flange coating of
the sensor with the flange screws.
3. If DN ≥ 350 (14"): Mount the ground cable directly on the metal transport bracket.
Observe screw tightening torques: see the Sensor Brief Operating Instructions.
4. Connect the connection housing of the transmitter or sensor to ground potential by
means of the ground terminal provided for the purpose.