Siemens SITRANS LG270 User manual

Operating Instructions • 01/2020
Guided Wave Radar
SITRANS LG270
Two-wire 4 … 20 mA/HART
Coax probe
-20 … +250 °C

2PBD-51041507
SITRANS LG270 - Operating Instructions
49916-EN-200212

3
PBD-51041507 SITRANS LG270 - Operating Instructions
49916-EN-20021249916-EN-200212
Contents
1 About this document ............................................................................................................... 5
1.1 Function ........................................................................................................................... 5
1.2 Target group ..................................................................................................................... 5
1.3 Symbols used................................................................................................................... 5
2 For your safety ......................................................................................................................... 6
2.1 Authorised personnel ....................................................................................................... 6
2.2 Appropriate use................................................................................................................ 6
2.3 Warning about incorrect use............................................................................................. 6
2.4 General safety instructions............................................................................................... 6
2.5 EU conformity................................................................................................................... 7
2.6 NAMUR recommendations .............................................................................................. 7
2.7 Installation and operation in the USA and Canada ........................................................... 7
3 Product description ................................................................................................................. 8
3.1 Conguration.................................................................................................................... 8
3.2 Principle of operation........................................................................................................ 9
3.3 Packaging, transport and storage................................................................................... 11
3.4 Accessories.................................................................................................................... 12
4 Mounting................................................................................................................................. 13
4.1 General instructions ....................................................................................................... 13
4.2 Mounting instructions ..................................................................................................... 14
5 Connecting to power supply................................................................................................. 18
5.1 Preparing the connection ............................................................................................... 18
5.2 Connecting..................................................................................................................... 19
5.3 Wiring plan, single chamber housing.............................................................................. 20
5.4 Wiring plan, double chamber housing ............................................................................ 21
5.5 Wiring plan, Ex-d-ia double chamber housing................................................................ 22
5.6 Supplementary electronics............................................................................................. 23
5.7 Switch-on phase............................................................................................................. 23
6 Set up with the display and adjustment module ................................................................ 24
6.1 Insert display and adjustment module............................................................................ 24
6.2 Adjustment system......................................................................................................... 25
6.3 Parameter adjustment - Quick setup .............................................................................. 26
6.4 Parameter adjustment - Extended adjustment................................................................ 26
6.5 Saving the parameterisation data................................................................................... 44
7 Setup with PACTware............................................................................................................. 45
7.1 Connect the PC.............................................................................................................. 45
7.2 Parameter adjustment with PACTware............................................................................ 46
7.3 Set up with the quick setup............................................................................................. 47
7.4 Saving the parameterisation data................................................................................... 48
8 Set up with other systems .................................................................................................... 49
8.1 DD adjustment programs ............................................................................................... 49
8.2 Field Communicator 375, 475 ........................................................................................ 49
9 Diagnostics and servicing .................................................................................................... 50
9.1 Maintenance .................................................................................................................. 50
9.2 Diagnosis memory ......................................................................................................... 50

4PBD-51041507
SITRANS LG270 - Operating Instructions
49916-EN-200212
9.3 Status messages............................................................................................................ 51
9.4 Rectify faults................................................................................................................... 54
9.5 Exchanging the electronics module................................................................................ 57
9.6 Software update ............................................................................................................. 58
9.7 How to proceed if a repair is necessary.......................................................................... 58
10 Dismount................................................................................................................................. 59
10.1 Dismounting steps.......................................................................................................... 59
10.2 Disposal ......................................................................................................................... 59
11 Supplement ............................................................................................................................ 60
11.1 Technical data ................................................................................................................ 60
11.2 Dimensions .................................................................................................................... 70
11.3 Trademark ...................................................................................................................... 73
Safety instructions for Ex areas
TakenoteoftheExspecicsafetyinstructionsforExapplications.
These instructions are attached as documents to each instrument
with Ex approval and are part of the operating instructions.
Editing status: 2020-01-24

5
PBD-51041507 SITRANS LG270 - Operating Instructions
49916-EN-200212
1 About this document
1.1 Function
This instruction provides all the information you need for mounting,
connection and setup as well as important instructions for mainte-
nance,faultrectication,theexchangeofpartsandthesafetyofthe
user. Please read this information before putting the instrument into
operation and keep this manual accessible in the immediate vicinity
of the device.
1.2 Target group
This operating instructions manual is directed to trained personnel.
Thecontentsofthismanualmustbemadeavailabletothequalied
personnel and implemented.
1.3 Symbols used
Information, note, tip: This symbol indicates helpful additional infor-
mation and tips for successful work.
Note: This symbol indicates notes to prevent failures, malfunctions,
damage to devices or plants.
Caution: Non-observance of the information marked with this symbol
may result in personal injury.
Warning: Non-observance of the information marked with this symbol
may result in serious or fatal personal injury.
Danger: Non-observance of the information marked with this symbol
results in serious or fatal personal injury.
Ex applications
This symbol indicates special instructions for Ex applications.
• List
The dot set in front indicates a list with no implied sequence.
1 Sequence of actions
Numbers set in front indicate successive steps in a procedure.
Battery disposal
This symbol indicates special information about the disposal of bat-
teries and accumulators.