Proline Promag 50 Installation
Endress+Hauser
29
• Grounding rings, incl. seals, are mounted inside the process connections.
The face-to-face length is not affected.
Installing the grounding rings
2.6.3 Welding the sensor into the pipe (weld nipples)
"
Caution!
Risk of destroying the electronics! Make sure that the welding system is not grounded via the
sensor or transmitter.
a. Secure the sensor with a few welding points in the pipe.
A welding jig suitable for this purpose can be ordered separately as an accessory.
b. Release the screws on the process connection flange and remove the sensor, including the
seal, from the pipe.
c. Weld the process connection into the pipe.
d. Mount the sensor back into the pipe.
In doing so, make sure the seals are clean and correctly positioned.
!
Note!
• When welding is performed correctly with thin-walled pipes carrying food, the seal is not
damaged by the heat even when it is mounted. It is recommended, however, to disassemble
the sensor and seal.
• For the disassembly work, it must be possible to open the pipe approx. 8 mm (0.31 in) in total.
a0008168
1 = Process connection hexagonal-headed bolts
2 = O-ring seals
4 = Sensor
3 = Grounding ring or plastic disk (place holder)
a. Release the 4 or 6 hexagonal-headed bolts (1) and remove the process connection from the sensor (4).
b. Remove the plastic disk (3) including the two O-ring seals (2) from the process connection.
c. Insert one of the O-ring seals (2) back into the groove of the process connection.
d. Place the metal grounding ring (3) into the process connection as illustrated.
e. Now insert the second O-ring seal (2) into the groove of the grounding ring.
f. Mount the process connection back onto the sensor. In doing so, make sure to observe the max. torques for
lubricated threads (7 Nm) (5.2 lbf ft).
Vendor Manual - Electromagnetic Flowmeter - Endress and Hauser - Model Proline Promag 50 - Operating Instructions
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