Krohne BM 70 M User Manual

Installation andoperating instructions forBM 70 MInclusive Part 2 Supplementary Installation andoperating instructions forBM 70 M-EEx / BM 70 Mi-EEx©K

10 BM 70 M HARTMaster4...20 mA4.3 Ex-i current output HART® (type of protection: Ex de [ia]) Function Level, distance, volume (conversion table)

14BM 70M-EEx/ BM 70Mi-EExAfter any maintenance work has been carried out, be sure to regrease the flameproof cover thread of the signal converter incl

BM 70M-EEx/ BM 70Mi-EEx15Assembly screws (M) for signal converter: MMPurge connection(optional)Purgeconnection(optional)Sensor connection(optional)Sen

16BM 70M-EEx/ BM 70Mi-EEx11 Approvals

BM 70M-EEx/ BM 70Mi-EEx17

18BM 70M-EEx/ BM 70Mi-EEx

BM 70M-EEx/ BM 70Mi-EEx19

20BM 70M-EEx/ BM 70Mi-EEx

BM 70M-EEx/ BM 70Mi-EEx21

22BM 70M-EEx/ BM 70Mi-EEx

BM 70M-EEx/ BM 70Mi-EEx23If you need to return a device for testing or repair to KROHNE Your instrument has been carefully manufactured and tested. If

BM 70 M 11RS485 connection mustbe terminated with 120 ohms(if necessary insert resistor between A and B)ComputersystemBus line (2 shielded wires)with

AustraliaKROHNE Australia Pty Ltd.Unit 19 No.9, Hudson Ave.Castle Hill 2154, NSWTEL.: +61(0)2-98948711FAX: +61(0)2-98994855e-mail: [email protected].

12 BM 70 M B) Connection of several BM 70 M in the RS 485 bus system via stubs to the bus cable: C) Connection of several BM 70 M in the RS 485 bus

BM 70 M 134.8 Digital input The digital input (for electrical data: see Section 4.2) can be used for temporarily "freezing" measurements or

14 BM 70 M 5.3 Repeatability Repeatability is equal to half the value for the error of measurement. 5.4 Measured value resolution/hysteresis Measu

BM 70 M 15D >1/7×H, but max. 1/3×DAntenna Type 3or Wave-StickHmeasurablelevelmin.Safety:• Operator control via the keys: on electrical safety grou

16 BM 70 M Do not position in tank centreline! (multiple reflections!)Do not mount dead centre on manhole cover! (multiple reflections!)Do not posi

BM 70 M 176.1.3 Mounting on tank fitting A) Horn antenna Should be mounted on the tank fitting as close to the horizontal as possible (deviation <

18 BM 70 M B) Solid antenna 6.1.4 Mounting on stilling wells/ trunks Antenna Type Outside diameter 1s 76 mm (2.99”) 2s 100 mm (3.94”) 3 140 mm

BM 70 M 19If necessary, several holes can be drilled along the whole length of the pipe. All holes must be deburred. The holes should be as small as

2 BM 70 M Part 1: Installation and operating instructions for BM 70 M1 Range of applications...

20 BM 70 M 6.1.6 Curved antenna extensions Rectangular and S-shaped extensions are available for particularly difficult operating conditions. Such

BM 70 M 21Antenna heating/cooling device(> DN150/6") Purging device(> DN100) Hazardous-duty systems: In Zone 0, the temperature of the hea

22 BM 70 M 6.2.4 Ambient temperature limits Signal converter: Measuring function OK, but LCD "freezes up" Functional upper limit, for ma

BM 70 M 236.3.2 Relative permittivity (εr≥ 1.5) The (relative) permittivity of the product (εr , Epsilon-R) determines the strength of the reflected

24 BM 70 M 6.4 Maintenance Cleaning the antenna Particular process applications can cause severe contamination of the antenna. Microwaves cannot be

BM 70 M 25Weights:Meter size Standard antenna Length Weight DN (mm) ANSI (“) Type ∅A (mm) ∅A (“) f (mm) f (“) kg lbs 200 8 4 200 7.87 335 1

26 BM 70 M 7.3 Field assembly • When the BM 70 M needs to be field assembled, all required parts are included with the supply (stud bolts, washers

BM 70 M 277.4.2 Flange system (Antenna, extensions and flange or flange plating) Available materials for BM 70 M flange systems (in contact with the

28 BM 70 M 7.6 Electrical connection The electrical connection for supply power and signal inputs/outputs is made in the terminal compartment (Ex-e

BM 70 M 29Current output HART®, Ex e: Ex-i current output HART®:Ex-i Current output HART® with switching output:Current output (non-communicable): R

BM 70 M 37 Design...

30 BM 70 M PROFIBUS-PA / FF with current output: PROFIBUS-PA / FF with switching output: 7.7 Terminating resistor for the RS 485 interface A sele

BM 70 M 318.2 Function of the keys The three keys have the following functions: → (Cursor key): - selects the configuration menu - branches the menu

32 BM 70 M 8.3 Operator control concept SubmenucolumnFunctionscolumnDatacolumnMeasuring modeWhen this is displayed, enter the 9-keystroke Entry Co

BM 70 M 33Examples of key functions The cursor (flashing part of display) is shown boxed in by dotted lines in the following description To change nu

34 BM 70 M 8.4 Table of settable functions (Versions 4.04 – 4.06) Function (Fct.) Enter range Default valueDescription1.0 OPERATION 1.1 DISPLAY

BM 70 M 35Function (Fct.) Enter range Default value Description 2.3 SW.OUTPUT OPEN 2.3.1 TEST S Options CLOSEDOPEN Switching output on/off. IMP

36 BM 70 M Function (Fct.) Enter range Default valueDescription 3.1.8 TB. OFFSET Enter -100.00 ... + 100.00 [m] 0.00 m To input the tank bott

BM 70 M 37Function (Fct.) Enter range Default value Description 3.3.4 SCALE 20 mA Enter -200.00 ... +200.00 [m] 0.00 ... 99999.99

38 BM 70 M Function (Fct.) Enter range Default value Description Options OFF ON 3.5.2 EMPTY.SPEC. RECORD OFF * Switch the empty-tank spectru

BM 70 M 39Function (Fct.) Enter range Default value Description 3.6.3 THRESHOLD Value -200.00 ... +200.00 [m] 0.00 ... 99999.99 [m3]

4 BM 70 M General advice on safety Weight: the device will weigh between approx. 55 kg (120 lb) and 70 kg (155 lb) or more!To carry, use both hands

40 BM 70 M 8.5.1 Level measurement (example) Tank height (Fct. 3.1.1) 6.00 m Antenna extension (Fct. 3.1.4) 0.20 m Block distance (Fct. 3.1.2)

BM 70 M 41Function I (Fct 3.3.1) CONVERSION Range I (Fct. 3.3.2) 4 - 20 mA Scaling 4 mA (Fct. 3.3.3) 0.00 m3 , corresponds to 4 mA Current output

42 BM 70 M The unit selected here is also valid for the following functions: Scaling 4 mA value, current output Fct. 3.3.3 Scaling 20 mA value, cu

BM 70 M 438.6.2 Vessel (tank) height Fct. 3.1.1 TANKHEIGHT • Definition of the tank height for the BM 70 M: Distance between the top edge of the tan

44 BM 70 M 8.6.3 Block distance, antenna type and antenna extension Fct. 3.1.2 BLOCKDIST • Caked deposits or contamination of the antenna, for exa

BM 70 M 458.6.5 Stilling well Fct. 3.1.6 STILLWELL If the device is operated with a stilling well, the option Stilling well = YES and the inside diam

46 BM 70 M Input the following parameters: Tank height 6 m Reference offset + 1 m Tank bottom offset 0 The possible measuring range is: Distance

BM 70 M 478.6.7 Display Fct. 3.2.1 (or Fct. 1.1.1) FCT.DISP. This function is used to select the measured variable. • LEVEL• DISTANCE• CONVERSION• RE

48 BM 70 M Fct. 3.2.5 ERROR MSG. Use this function to select whether errors are to be displayed during measurement. • NO: Error messages shown only

BM 70 M 498.6.9 Communication interfaces Fct. 3.3.5 BAUDRATE • This function defines the transmission rate for RS 485 Communication. - 1200 Bd. - 240

BM 70 M 51 Range of applications The BM 70 M Level-Radar level gauging system is designed to measure the distance, level, volume and reflection of l

50 BM 70 M PROFIBUS-PA:(special signal output required) The PROFIBUS-PA is defined and standardised in DIN 19245, Parts 1 and 2. A large number of

BM 70 M 518.6.11 Auto tank height FCT. 3.5.1 AUTO TANKH With this function the height of the tank can be determined by the BM 70 M itself, provided t

52 BM 70 M Recording of the empty spectrum (sequence, example) Key Displayed Description →2 x ↑→4 x ↑→↑→↑→↑↵↑↵↵↵4 x ↵1.03.03.13.53.5.23.5.2OPERATIO

BM 70 M 53FCT. 3.5.2 EMPTY.SPEC. Under this function the empty spectrum is activated or deactivated, or recorded and stored. The display first gives

54 BM 70 M 8.6.13 Time constant and tracking speed Fct. 3.5.3 TIMECONST. • New measured values are damped (filtered) with the time constant so as t

BM 70 M 55Fct 3.5.6 BD-DETECT.• NO• YES (default) To activate the block distance (overfill) detector:So long as a significant signal is detected wit

56 BM 70 M Fct. 3.5.7 FUNCT. FTB • The tank bottom tracing system is activated under this function: • OFFThe FTB is deactivated; the device operate

BM 70 M 57Fct. 3.6.1. FUNCTION S Use this function to select the measured variable. • OFF (= deactivated; Fct. 3.6.2, 3.6.3 and 3.6.4 are no longer s

58 BM 70 M Switching output characteristics Switching function settable by way of ... Further parameters settable via ... Sw.output applicationExam

BM 70 M 598.7 Functional checks 8.7.1 Main menu 2.0 Test functions Function (Fct.) Input range Description 2.0 TEST 2.1 HARDWARE 2.1.1 MASTER S

6 BM 70 M As the transmit frequency is changed during a short time interval by FMCW radar the transmitted frequency has to follow the nominal frequ

60 BM 70 M Fct. 2.1.2. DISPLAY • Select Function 2.1.2, as described in Sect. 8.2 and 8.3. • Press the → key; all segments in the display are switc

BM 70 M 618.7.4 Test of switching output Fct. 2.3.1 TEST S • In this test, the switching contact (terminals 41 and 42) can be closed or opened. • Se

62 BM 70 M 8.8.2 Pointers provided by 6 markers during measurement Marker Cause Explanation 1 No current measuredvalueThe device is currently sea

BM 70 M 638.8.3 Error messages and their representation in display and at outputs The following list gives all error messages that can occur: E

64 BM 70 M 8.8.4 Error display during measurement In the setting level under Fct. 3.2.4 ERROR MSG. (error messages), it is possible to select whet

BM 70 M 65Group D: Display No. Fault / Symptom Cause Corrective action D4 Display shows "START". Device carries out a hot start after a

66 BM 70 M Group A: Signal output No. Fault / Symptom Cause Corrective action A4 Data Communication via the digital interface not functioning.

BM 70 M 67Group A: Signal output No. Fault / Symptom Cause Corrective action DA6 When the empty tank is being filled, the measured value initia

68 BM 70 M Group DA: Display and signal output No. Fault / Symptom Cause Corrective action DA11 Display and signal output indicate sizeable ste

BM 70 M 69Group DA: Display and signal output No. Fault / Symptom Cause Corrective action DA17 Display and signal output go suddenly to "zer

BM 70 M 72.3 Modularity (signal converter, flange, antenna) The measuring system consists of the flange system and the signal converter. The flange

70 BM 70 M 8.11 Calculation of the measured value The following describes how the individual items of information are calculated from the measured

BM 70 M 71PC-CAT allows convenient remote control of all functions of the signal converter. The vessel can be shown in schematic form together with t

72 BM 70 M 9.2 Fuses Device-internal fuses for power: 24 V DC/ AC* T 1.25 A 115 V AC** T 315 mA 230 V AC** T 160 mA * Terminals 1 and 2 are

BM 70 M 734.3 Changeover between 1 fuse (TN system) and 2 fuses (IT system) (AC-Version only) Plug the blue wire on the "line" board into

74 BM 70 M 115/230 V AC supply Connection to a power source with dangerous contact voltage: if due to protective measures in conformity with VDE 01

BM 70 M 7510 Certificates and approvals 10.1 Declaration of Conformity

76 BM 70 M 11 Ordering information Technical information relevant to the order BM 70 M Level-Radar Connecting flange: Flange and ant

BM 70 M 7712 External standards, codes and directives DIN V 19259: 1996-10 Documentation of devices, Data types with classification scheme for meas

78 BM 70 M Annex A: Technical data Application range Distance, level, volume and reflection measurement of liquids, pastes and slurries in storage

BM 70 M 79U = 6...30 V; ILow < 110 mA; ULow < 2 V; IHigh < 900 µA (@ U=30V) or IHigh = 200 µA (@ U=8V) Data: Ex-i switching output Maximum s

8 BM 70 M 3.3 Block distance The block distance is the minimum measured distance between the mounting flange (reference point) and surface of the t

80 BM 70 M Measured value:± 0.08 mm/°C (quasi-static: ∆T < 0.5 °C/min) ± 5 mm (change ∆T > 0.5 °C/min) Influence of the propagation way (in

BM 70 M 81DesignVersions: solid antenna or standard horn antenna, both with flange connection DN200/PN16 or 8”/150 lbs Dimensions and weights Height

82 BM 70 M Annex B: Type code / nameplates The type code is made up of the following elements: (1)BM 70M . / . / . – E Ex ... . ..

BM 70 M 83Annex C: Spare parts

84 BM 70 M

BM 70 M 85

86 BM 70 M If you need to return a device for testing or repair to KROHNE Your instrument has been carefully manufactured and tested. If installed

Part 2Supplementary Installation andoperating instructions forBM 70 M-EExBM 70 Mi-EEx©KROHNE 08/2002 7.10027.21.00GRVariable area flowmetersVortex fl

2 BM 70M-EEx/ BM 70Mi-EExPart 2: Documentation BM 70 M-EEx / BM 70 Mi-EEx 1General safety information ...

BM 70M-EEx/ BM 70Mi-EEx31 General safety information These additional “Ex“ Instructions apply to the hazardous-duty versions of BM 70 M-EEx level gau

BM 70 M 9BM 70 AHART specific software and operating devicesConverterHART-HHCHART CommunicatorHARTFIELD COMMUNICATIONS OI>>>F1 F2

4BM 70M-EEx/ BM 70Mi-EExunassigned stainless steel (standard) 9 Type of waveguide window H Hastelloy Materials of wetted parts SS stainless steel HB

BM 70M-EEx/ BM 70Mi-EEx53.1.3 Special lock The sealing covers of terminal compartment and electronics compartment are secured by special locks. The lo

6BM 70M-EEx/ BM 70Mi-EExApplication restrictions: • Flange system V96 with heatingThe operator shall ensure that the temperature of the heating medium

BM 70M-EEx/ BM 70Mi-EEx7Device versions BM 70 M -EEx /V96 Temperature class Ambient temperature [°C] Maximum flange temperature [°C] T6 60 85 55 1

8BM 70M-EEx/ BM 70Mi-EEx4 Identifying Marking The level gauges bear the following marking: • on the signal converterstick-on label or metal plate on

BM 70M-EEx/ BM 70Mi-EEx94.1.2 Signal converter with intrinsically safe I/O functions BM 70 Mi -EEx in Category 2G in combination with: Flange system

10BM 70M-EEx/ BM 70Mi-EEx5 Assembly and installation Assembly and installation to be carried out in accordance with the valid installation standards

BM 70M-EEx/ BM 70Mi-EEx11Terminal compartment in EEx e or EEx ei type of protection Permissible as cable entries and blanking plugs are only parts cer

12BM 70M-EEx/ BM 70Mi-EEx5.2.4 Terminal assignment Power supply The power connection is of the non-intrinsically safe type for all variants of BM 70 M

BM 70M-EEx/ BM 70Mi-EEx136 Initial start-up Check the following before initial start-up: • Verify suitability of the materials used for the flange sy