Preparing The Measuring Instrument; Mounting The Measuring; Instrument - Endress+Hauser IO-Link Dosimag Operating Instructions Manual

Mounting
22
6.2.2

Preparing the measuring instrument

1. Remove all remaining transport packaging.
2. Remove any protective covers or protective caps present from the measuring

instrument.

6.2.3 Mounting the measuring instrument
WARNING
L
Danger due to improper process sealing!
‣
Ensure that the inside diameters of the gaskets are greater than or equal to that of the
process connections and piping.
‣
Ensure that the seals are clean and undamaged.
‣
Secure the seals correctly.
The measuring instrument is supplied to order, with or without pre-installed process
connections. Pre-installed process connections are secured to the measuring instrument
using 4 hexagonal-headed bolts.
‣
Ensure that the direction of the arrow on the nameplate of the measuring instrument
matches the flow direction of the medium. →  12
Depending on the application and pipe length, the measuring instrument may need to
be supported or additionally secured. →  51
Welding the measuring instrument into the pipe (welding nipples)
WARNING
L
Risk of destroying the electronics!
‣
Make sure that the welding system is not earthed via the measuring instrument.
1. Tack-weld the measuring instrument to secure it in the pipe. A suitable welding jig
can be ordered separately as an accessory. →  65
2. Loosen the screws on the process connection flange and remove the measuring
instrument, along with the seal, from the pipe.
3. Weld the process connection into the pipe.
4. Reinstall the measuring instrument in the pipe, and in doing so make sure that the
seal is clean and in the right position.
• If thin-walled pipes carrying food are welded correctly, the seal is not damaged by
the heat even when mounted. However, it is recommended to disassemble the
measuring instrument and seal.
• It must be possible to open the pipe by at least 8 mm (0.31 in) for disassembly.
Mounting the seals
Comply with the following instructions when installing seals:
1. The seals should be dry, clean, undamaged and correctly centered.
2. In the case of metal process connections, the screws must be tightened securely. The
process connection forms a metal connection with the measuring instrument, which
ensures a defined compression of the seal.
3. With regard to process connections made of plastic material, comply with the max.
torques for lubricated threads: 7 Nm (5.2 lbf ft).
4. Depending on the application, the seals should be replaced periodically, particularly if
molded seals are used (aseptic version). The interval between changes depends on
the frequency of the cleaning cycles, the cleaning temperature and the medium
temperature. Replacement seals can be ordered as an accessory.
Dosimag IO-Link
Endress+Hauser