KROHNE BM 102 Handbook - Manual (Page 58)

58 BM 102
1
Signal converter housing
2 O-ring, grease well before fitting
3 Lock washer
4 Housing (socket head cap) screw x 4
(M5 x 12), non-pressure-bearing
Procedure to replace the signal converter (refer to diagram above)
Step Action
1
Disconnect all wires (see sections 2.1.2 or 2.1.3)
2
Unscrew the 4 socket head cap screws M5x12 (ISO 4762), item 4, using a 4 mm
Allen/hexagon key) and remove the signal converter.
3 The gasket between signal converter and flange must be well greased.
4 Install the new signal converter and making sure that the signal pin in the
housing is not damaged.
5 Reinsert and tighten up the 4 socket head cap screws M5x12, item 4.
6 Reconnect all wires as described in sections 2.1.2 or 2.1.3.
Hazardous-duty systems
Before replacing the signal converter in hazardous locations, make absolutely sure
that there is no risk of explosion (gas-free certificate). For further information refer
to the BM 102 MICROFLEX KEMA 00 ATEX 1101X Supplementary Installation
and Operating Instructions. This document is available from the “Download Centre”
on KROHNE’s website http://www.krohne.com/.
For pressurized tanks with a flange connection between the tank and the device,
do not undo the 4 flange bolts - these are used for fastening the complete sealing
system.