DIN A4: 7.02182.37.00 KROHNE 11/2000 US size: 7.02182.77.00

GR/LP

Status: 05-1998

Installation and operating instructions(Reference Manual)

Level RadarBM 70 A/BM 70 PNon-contact level gaugingusing electromagnetic waves

Variable area flowmeters

Vortex flowmeters

Flow controllers

Electromagnetic flowmeters

Ultrasonic flowmeters

Mass flowmeters

Level measuring instruments

Communications engineering

Engineering systems & solutions

BM 70 A/P Montage- und Betriebsanleitung Seite: 2 11/00

Contents:

General advice on safety ................................3Product liability and warranty .........................3Items included with supply ..............................3Software history ..............................................4

1. Range of application ................................6

2. Mode of operation and system structure.62.1 Operating principle ...................................62.2 Signal processing (digital) .........................72.3 Modularity (signal converter, flange, antenna)....................................................7

3. Input...........................................................83.1 Measured variable (distance, level, volume, reflection) ....................................83.2 Measuring range [0.5-35/40 m (1.64-115/131 ft)] .....................................83.3 Block distance...........................................83.4 Out-of-range performance.........................8

4. Output........................................................94.1 Variants.....................................................94.2 Ex-e current output HART ....................104.3 Ex-i current output HART

(type of protection: Ex de [ia]) ................104.4 HART communication............................114.5 Current output (non-communicable) .......114.6 Digital interface RS 485 .........................114.7 Breakdown signal ....................................134.8 Digital input .............................................13

5. Measuring accuracy................................145.1 Reference conditions...............................145.2 Error of measurement ............................145.3 Repeatability ...........................................155.4 Measured value resolution/hysteresis .....155.5 Transient recovery time ..........................165.6 Turn-on drift / turn-on characteristics ......165.7 Long-term drift .......................................165.8 Effect of ambient temperature ................16

6. Operating conditions .............................176.1 Installation conditions .............................176.2 Ambient conditions..................................256.3 Product conditions...................................266.4 Maintenance ......... .................................27

7. Design......................................................287.1 Models ..... .............................................287.2 Dimensions and weights .........................297.3 Replacement of the signal converter .......307.4 Field assembly ........................................307.5 Selection of antenna type and size..............317.6 Materials of construction .........................327.7 Process connection .................................327.8 Electrical connection ...............................337.9 Terminating resistor for the RS 485 interface .....................................34

8. User interface ..........................................358.1 Local display .........................................358.2 Function of the keys ...............................368.3 Operator control concept ........................378.4 Table fo settable functions (Version 3.00, 3.03, 4.02, 4.03) .............398.5 Configuration examples..........................428.6 Description of functions ..........................448.7 Functional checks...................................558.8 Pointers and error messages during

measurements.......................................568.9 Messages on start-up.............................588.10 Faults and symptoms during start-up

and measurement .................................588.11 Calculation of the measured value .......618.12 User program PC-CAT for Windows .........................................62

9. Power supply ..........................................639.1 Options, technical data...........................639.2 Fuses ....................................................639.3 Changeover of operating voltage and

replacement of fuses .............................639.4 Advice on safety.....................................64

10. Certificates and approvals....................6610.1 Hazardous-duty approvals .....................6610.2 Other approvals and certificates ...........6610.3 Explosion proof acc. to ATEX ...............6710.4 Radio approval .....................................6810.5 CE manufacturers declaration...............69

11. Order information .................................70

12. External standards, codes and directives ..............................................71

13. Quality assurance .................................71

AnnexAnnex A: Technical Data ............................72Annex B: Type code / nameplates...............74Annex C: Spare parts .................................77Annex D: Signed declaration to accompany a device returned to KROHNE ....80Annex E: Table on documentation of device configuration ....................81Annex F: Index............................................82

Installation and operating instructions BM 70 A/P Page: 3 11/00

General advice on safety:

To carry: the device will weigh between approx. 16 kg (35.5 lb) and 30 kg (66.1 lb) or more! Tocarry, use both hands to lift the device carefully by the converter housing. If necessary, use liftinggear.

When handling the BM 70 A/P, avoid hard blows, jolts, impacts, etc.

Product liability and warranty:

The BM 70 A/P level gauge is designed solely for measuring the distance, level, volume andreflection of liquids, pastes, slurries, solids and particulate materials.The BM 70 A/P level gauge does not form part of an overfill protection system as defined in WHG.Special codes and regulations apply to its use in hazardous areas.Responsibility as to suitability and intended use of these level gauges rests solely with the user.Improper installation and operation of our level gauges may lead to loss of warranty.In addition, the "General conditions of sale", forming the basis of the purchasing contract, are appli-cable.If you need to return the level gauge to the manufacturer or supplier, please refer to the informationgiven in Annex D.

Items included with supply:

The scope of supply encompasses, in the version as ordered: Signal converter bolted to waveguide window and antenna

Optionally: antenna extension, sunshade (with fastening material in each case) Shielding material with strap retainer (not for the US market) Report on factory settings for the signal converter Bar magnet for operator control / parameter assignment (only in version with local display) Wrench for the coversInstallation material (stud bolts, flange gasket and cabling) not supplied, to be provided by customer!

Documentation supplied:

Condensed instructions: installation, connection, start-up and safety advice in condensed form,but sufficient for most applications. Please read through these instructions first!

Instruction card: overview of the configuration menu and meaning of the markers in cheque cardformat.

Installation and operating instructions (this manual): detailed user manual and reference book,including description of special versions and functions. This documentation is structured on linessimilar to those given in the DIN V 19259 Standard.

Approval documents, unless reproduced in the installation and operating instructions.

Installation and operating instructions BM 70 A/P Page: 4 11/00

Software historySignal Converter Firmware

For BM 70 A:IntroductionMth./Yr

FirmwareVersion

DeviceInstructions

Remarks

06/97 3.00PREnn 06/97 Test versions01/98 3.00 11/97-11/00 First serial version. Errors when empty spectrum recorded

with WAVE-STICK; automatic reset when signal is extremelyweak.

05/98 3.01 11/97-11/00 Elimination of errors in V. 3.00; improved application of emptyspectrum at tank bottom.

07/99 3.02 05/98-11/00 Implementation of the ModBus protocol; adaptation toPROFIBUS interface; improved application of emptyspectrum at tank bottom; improvement of PC-CAT protocolswitching in multidrop operation; definition of 3.6 mA as lowererror current for the IS current output; improved tank bottomtracing; improved spectrum evaluation at tank heights > 15m.

11/99 3.03 05/98-11/00 Correction of a bug in the mode "Hold on Error" (outputcurrent went to 1 mA or 3.6 mA; only V. 3.02); Adaption of theHART protocol for operation with the program AMS, andsome smaller error corrections; Improved "tank bottomrecognition" (measured value now always goes to theprogrammed tank bottom position); If no measured value isfound after start-up, the instrument goes directly into "tankbottom recognition" and the local display to level = 0, if Fct.3.2.5 Error Messages = NO is set.

For BM 70 P:IntroductionMth./Yr

FirmwareVersion

DeviceInstructions

Remarks

05/98 4.00PREnn4.01PREnn4.02PREnn

05/98 Test versions

07/99 4.02 05/98-11/00 First serial version.11/99 4.03 05/98-11/00 Correction of a bug in the mode "Hold on Error" (output

current went to 1 mA or