KROHNE BM 70A EEx EN User Manual
Page 2
07/2010 - 4000662402 MA BM70x-Ex-AD-R02-en
2
Contents
1.
General Safety Information ....................................................................................................3
2.
Safety-relevant type code ......................................................................................................4
3.
Main safety-relevant characteristics......................................................................................6
3.1.
Signal converter .................................................................................................................6
3.1.1.
Category / Zone allocation..............................................................................................6
3.1.2.
Type of protection ..........................................................................................................6
3.1.3.
Special lock....................................................................................................................6
3.1.4.
I/O functions...................................................................................................................7
3.2.
Flange systems ..................................................................................................................8
3.2.1.
Category / Zone allocation..............................................................................................8
3.2.1.1.
BM 70..-Ex with flange system V96........................................................................8
3.2.1.2.
BM 70..-Ex with flange system WS.........................................................................9
3.2.1.3.
Tank connections.................................................................................................10
3.3.
Temperature classes, complete device.............................................................................10
3.3.1.
General........................................................................................................................10
3.3.2.
BM 70..-Ex with flange system V96 and WS Category 1 (Zone 0) .................................11
3.3.3.
BM 70..-Ex with flange system WS Category 2 (Zone 1)...............................................13
4.
Identifying marking...............................................................................................................14
4.1.
Marking - signal converter ................................................................................................14
4.1.1.
Signal converter without intrinsically safe I/O function...................................................14
4.1.2.
Signal converter with intrinsically safe signal outputs ....................................................15
4.1.3.
Flange systems V96 or WS with tank mounting flange (all versions) .............................16
4.1.4.
Flange system WS with sanitary screw connection or threaded tank socket..................17
5.
Assembly and installation....................................................................................................18
5.1.
Flange systems ................................................................................................................18
5.1.1.
Flange system V96 ......................................................................................................18
5.1.1.1.
Flange system V96 with heating...........................................................................18
5.1.1.2.
Flange system V96 with purging system ..............................................................18
5.1.1.3.
Flange system V96 with heating and purging devices...........................................18
5.1.2.
Flange system WS (Wave Stick) ..................................................................................19
5.2.
Electrical connection BM 70A.-Ex, BM 70P.-Ex und BM 700-Ex........................................19
5.2.1.
General........................................................................................................................19
5.2.1.1.
Terminal compartment .........................................................................................19
5.2.1.2.
Power cables .......................................................................................................20
5.2.1.3.
Connection of power and I/O functions.................................................................20
5.2.2.
Terminal assignment....................................................................................................21
5.2.2.1.
Supply power.......................................................................................................21
5.2.2.2.
Terminal assignment - I/O functions .....................................................................22
5.3.
Electrical Connection BM 702-Ex / BM 702 A-Ex ..............................................................25
5.3.1.
General Information .....................................................................................................25
5.3.1.1.
Terminal Compartment ........................................................................................25
5.3.1.2.
Connecting Cables ..............................................................................................25
5.3.1.3.
Connection power supply and I/O Function ..........................................................25
6.
Start-up .................................................................................................................................26
7.
Operation ..............................................................................................................................26
8.
Preventive maintenance.......................................................................................................26
8.1.
Signal converter ...............................................................................................................26
8.2.
Flange systems ................................................................................................................27
9.
Dismantling...........................................................................................................................27
9.1.
Replacement of the signal converter.................................................................................27
9.2.
Replacement of complete device......................................................................................28
10.
Maintenance..........................................................................................................................28