Commissioning
P
age 12
3.2 Installation of measuring drum and displacer
3.2.1 Tools
It is recommended to use an 847 PET (Portable Enraf Terminal) to load the different parameters.
A tool set for commissioning and maintenance is available from Honeywell Enraf (see figure 3.1).
Item Description
1 Allen key 2 mm
2 Allen key 3 mm
3 Allen key 4 mm
4 Allen key 5 mm
5 Allen key 8 mm
6 Drum bearing puller
7 test magnet
8 Screwdriver for Allen key screws M4
9 Screwdriver for Allen key screws M6
10 Pipe wrench 27 mm
11 Tommy bar
Figure 3.1 Tool set for 854 ATG (part no. A1854062)
3.2.2 Installation of measuring drum
• Remove the drum compartment cover (rear cover).
• Check whether the drum shaft is properly positioned in the
drum.
• Attach the smallest of the four test weights (or another small
weight) to the measuring wire, remove the rubber band
securing the measuring wire and feed the wire and test weight
through the neck of the gauge (see figure 3.2).
• Insert the measuring drum onto its bearings.
• Check the axial free-play of the drum as follows:
• Push the drum towards the magnet cap in such a way that the
drum shaft meets the magnet cap. Release the drum.
• Bring the drum in a slight vibration. The drum and drum Figure 3.2 Installing drum
shaft should now move towards you with a axial movement of
minimum 1 mm and maximum 2.5 mm.
• Note the engraved drum circumference value on a piece of paper for later use. There are several
n
umbers engraved on the measuring drum. The number you are looking for has a value of
approximately 338 mm (for example: 338.028).
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