KROHNE BM 700 Manuel utilisateur

©KROHNE

7.02226.31.00

Status: 06-1999

Installation and operating

instructions

Level-Radar

BM 700

Variable area flowmeters

Vortex flowmeters

Flow controllers

Electromagnetic flowmeters

Ultrasonic flowmeters

Mass flowmeters

Level measuring instruments

Communications technology

Engineering systems & solutions

Page 2BM 700 Installation and Operating Instructions

Software History

Intro-

duction Signal converter User program Instructions

Mth./Yr Hardware Firmware Hardware

Operating-

system Software Device User

program

04/98 BM 700 5.00PREnn

5.01PRE01 PC DOS 5.0

and higher PC-CAT

3.00

PREnn

Suppl.

instruction

to BM 70A

7.02221.11

+ Suppl.

instruction

Test versions for BM 700.

10/98 BM 700 5.01 PC DOS 5.0

and higher PC-CAT

3.00 10/98 7.02221.11

+ Suppl.

instruction

First serial version for BM 700.

Items included with supply

The scope of supply includes, 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 tightening strap (not for the US market)

•Installation and operating instructions plus instruction card

•Report on factory settings for the signal converter

•Certification and approval documents, unless reproduced in the device

documentation

•Bar magnet for operator control (only for version with local display)

•Wrench for covers

Installation material (stud bolts, flange gasket and cabling) not supplied, to be

provided by customer!

BM 700 Installation and Operating Instructions Page 3

Contents:

page

1Handling and storage 3

2Installation 4

2.1 Field assembly 4

2.2 Mechanical installation 5

3Electrical connection 7

4Setting the parameters 8

5Maintenance, error handling 16

6Safety information 17

7Technical data (extract) 18

8BM 700 Level-Radar Type code 19

9Parameter check list BM 700 21

Appendix 22

Product liability and warranty:

The BM 700 level gauge is designed solely for measuring the level, distance, volume

and reflection of liquids, pastes, slurries, particulate materials and solids.

The BM 700 level gauge does not form part of an overfill protection system as

defined in the WHG (= German water pollution regulation).

Local 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", form the basis of the purchasing

contract.

If you need to return the level gauge to the manufacturer or supplier, please refer to

the information given in Section 5

1Handling and storage

Safety advice

Depending on the version, the device will weigh between approx. 10 kg and 30 kg.

To carry, use both hands to lift the device carefully by the converter housing. If

necessary, use lifting gear.

When handling the BM 700, avoid hard blows, jolts, impact, etc.

When storing the "Wave-Stick" version, make sure that the device is not placed on its

side on the PTFE antenna, as this may cause the rod to bend.

Page 4BM 700 Installation and Operating Instructions

2Installation

Most of the BM 700 versions are supplied in fully assembled condition. In this case,

you may skip this chapter. However, if a device should be delivered in parts, or parts

are subsequently replaced, the following should be noted.

2.1 Field assembly

•For any necessary field assembly of the

BM 700, all parts are included with the

supply (stud bolts, washers, etc.).

•Bolt the waveguide window (flange mount)

or distance piece, if supplied loose, to the

BM 700. Torque for the sets of 4 Allen

screws M(key size 5 mm): max. 8 Nm ∼

0.8 kpm (5.8 ft lbf).

•Note: Ensure the upper Teflon plug is kept

absolutely dry and clean! Moisture and dirt

will impair functionability of the BM 700!

•Bolt antenna extension to the antenna;

torque for the 3 stud bolts A: max. 8 Nm ∼

0.8 kpm (5.8 ft lbf).

Do not detach bolts H !

Versions:

distance piece (for

high-temperature version

up to 250°C (482 °F)

upper Teflon plug

O-ring

lower Teflon plug

O-ring

BM70 A

connecting flange

antenna extension

antenna

signal converter

Flange

Stick plating

(for Hastelloy,

Stick Gasket Gasket

Horn

antenna

Separation

(Metaglass)

Wave-Stick Wave-Stick

(PP or PTFE)

Flange system 96

with horn antenna

LP flange system

max. 2 bar

distance piece

(optional)

High temperature

blind with Display

BM 700

converter

BM 700

plate Horn

antenna

Flange

Ti, Ta)

PTFE w/o plate

converter

with horn antenna

max. 2 bar (29 psig)

BM 700 Installation and Operating Instructions Page 5

2.2 Mechanical installation

Hazardous-duty systems:

•The BM 700 Ex is certified in conformity with European Standard for use in Zone

0, 1 and 2 hazardous locations (dependent on version).

•Attention is drawn to the data and information given on the nameplate of the

converter, the nameplate of the flange and the specifications in the approval

certificates.

Safety:

•Surface temperature: The housing of the signal converter can, in extreme

ambient conditions, have a temperature of more than 70°C (158°F)!

•Check material compatibility of antenna, extension, flange, gaskets, and PP or

PTFE (used in all versions) with the product! See also section 8 "Type code"!

Mounting on the tank nozzle

a) Devices with horn antenna:

The antenna should project out of the nozzle. If necessary, use an antenna exten-

sion. Exception: in case of a symmetrical tank fitting.

Tank nozzle

Tank nozzle Antenna

extension

Tank nozzle

b) Wave-Stick

Note the requirements imposed on nozzle diameter and nozzle length:

min. 50 mm

min. 235 mm

tank nozzle

dia. 40...55 mm

e.g. DN50 (2")

Version for

still wells

(1.57" to 2.17")

Page 6BM 700 Installation and Operating Instructions

c) Purging device

Remove screw plug ¼" R and screw in

screwed tube joint, e.g. Ermeto ¼" R.

Consult “Ex“ specifications relating to the

purging circuit (provided by customer)!

Installation on the tank

•

Do not forget the gasket when

positioning the BM 700 on the tank

nozzle flange. Align BM 700 and gasket,

slightly tighten nuts on stud bolts (by

hand).

•Press shielding strip C*

in the gap

between tank and BM

700 flanges and

secure with strap retainer S*

(both

items included with supply).

•Strap retainer S*

must fit closely and

overlap both flanges.

* only required for European radio approvals

•

Tighten down stud bolt nuts firmly. The

tightening torque is

dependent upon the

strength properties of the stud bolts and

the pressure rating of the tank.

C* = shielding strip B = BM 700 flange

S* = strap retainer F = tank flange

Positioning on the tank

>1/7×H, but max. 1/3×D H

Recommended distance Do not position in Do not position

from the tank wall tank centreline!above internals!

(multiple reflections!) (interference reflections!)

A Stilling well or Wave-Guide may be mounted in any position on the tank!

When using the PTFE Wave-Stick in hazardous areas of Zone 0, any electrostatic

charging of the stick, e.g. by flow of product, must be avoided!

BM 700 Installation and Operating Instructions Page 7

3Electrical connection

To open the terminal compartment of the signal converter, first open the safety lock

with an Allen key (size: 4 mm) and then use the enclosed special wrench to turn the

cover anticlockwise.

Supply power

Variant Voltage range Recommended fuse protection

24 V DCAC 19.2 -28.8 V DC or

20.4 -26.4 V AC min. T 0.5 A

Terminal assignment

Supply power:

Terminal compartment BM 700: External power supply "FEAS, type PSLC242":

Power supply galvanically insulated according to VDE 0551

Dimensions (W×H×D): 55×75×110 mm, usable for rail

mounting

Class of protection

The BM 700 level gauge is designed for safety class 1 in conformity with VDE 0106

Part 1.

24 V DCAC supply

When connected to a “functional extra-low voltage with safety separation“ power

source (SELV or PELV) in accordance with VDE 0100, Part 410 or equivalent

(inter)national regulations, connection of a safety conductor (PE) is not required.

Equipotential bonding

When used in hazardous areas, the BM 700 Ex must be incorporated in the PA

equipotential bonding system , irrespective of the type of power supply! If the PA is

connected via a separate conductor, this must be connected to the separate U-clamp

terminal at the “neck“ of the BM 700 Ex. Cancellation of equipotential bonding is only

permitted when the BM 700 is disconnected from supply.

Rated temperature of connecting cables: see Section 6.

+ + - -

L1L1 N N3 4

230 V AC

BM 700 (max. 5 instruments)

+ + - -

L1L1 N N3 4

115 V AC

BM 700 (max. 5 instruments)

32 31

Current

output

1 2 -+

4-20mA

max.350 Ω

Power supply

24 V DC (+/-20%)

24 V AC (+10/-15%)

< 300 mA

Page 8BM 700 Installation and Operating Instructions

4Setting the parameters

Setting parameters via program PC-CAT

With the program PC-CAT, version 3.00 or higher, you can configurate BM 700

instruments in a very comfortable way form a PC. Connect the current output of

BM 700 over a load between 120 Ωand 350 Ωto the Smart adapter (delivered

together with PC-CAT) and connect it with a serial port of the PC.

Local display (optional)

•Numeric display, measured values

‚Alphanumeric display, function/unit

ƒMax. 6 markers to display measurement

status

„3 keys for configuration and error

interrogation

…Magnetic sensors for operator control

through the closed housing (function

same as the 3 keys)

†Compass field, indicates actuation of a

key

Adapter

≥ 120 Ω

RS232

BM 700 Installation and Operating Instructions Page 9

Function of keys (only for version with local display)

Operator control via the keys: For reasons of electrical safety, the keys (below the

display, when housing is open) may only be actuated for servicing and repair work by

specialist personnel, on no account, however, when there is risk of explosion!

Operator control can be carried out with the aid of the supplied bar magnet without

opening the housing. However, a particularly convenient form of parameter setting is

offered by the PC program PC-CAT (special accessories, see above).

→(cursor key): -selects the configuration menu,

-branches the menu to the next lower level,

-shifts the cursor* to the next column on the right.

↑(select key): -branches the menu to the next digit on the same level,

-changes the content (digit, text character) at the cursor*

position.

↵(ENTER key): -branches the menu to the next higher level,

-stores newly entered parameters,

-executes displayed functions,

-selects special functions (e.g. error memory, see Sect. 5).

* The cursor position is signalled by flashing of the character or the option at the appropriate place.

Meaning of status markers (only for version with local display)

The 6 markers below the local display only show information about the status of

measurement and are no error displays!

1: No current measured value: The device is searching for a new value. If the

search for a plausible level fails for a certain time, "SIGNAL DOWN" appears as

error display.

2: Signal too strong: Mean of reflected microwaves is very high. Gain is automa-

tically stepped down.

3: Poor spectrum: Brief showing of this marker has no significance. If permanent-

ly on, this may result in uncertain (incorrect) measured values or the error

message "NO M.VALUE".

4: No measured value as yet: Evaluable measured values not available after the

device has been started up. Measured value automatically set to the level of the

tank bottom. This marker disappears when the first valid measured value is

obtained.

5: Tank bottom: In tanks with dished bottom, for example, the measuring signal

can "disappear" if measurements are carried out near the bottom. The mea-

sured value is then automatically set to the level of the tank bottom.

6: Measurement frozen: Device is in the block distance detection (see below).

Description of functions

The table on the following 2 pages provides an overview of all parameters that can

be set in the configuration menu.

This is followed by more precise explanations of some functions and a typical

configuration.

Page 10 BM 700 Installation and Operating Instructions

Configuration menu (version 5.00 / 5.01)

Function (Fct.) Input range Description

1.0 OPERATION

1.1 DISPLAY

1.1.1 FCT.DISP identical with 3.2.1

1.1.2 UNIT.LENGTH identical with 3.2.2

1.1.3 UNIT.CONV. identical with 3.2.3

2.0 TEST

2.1 HARDWARE

2.1.1 MASTER Master hardware test.

2.1.2 DISPLAY Display hardware test.

2.1.3 STATUS Status information for Service

2.2 CUR.OUTP.I

2.2.1 VALUE I Value display Display of actual value of the current

output.

2.2.2 TEST I Select 2 mA/4 mA/6 mA/...

... 20 mA/22 mA Output of selected value to the current

output. With safety query.

2.4 FIRMWARE

2.4.1 MASTER Display Display of master firmware version.

2.4.2 DISPLAY Display Display of display firmware version.

3.0 INSTALL.

3.1 BASIS.PARAM

3.1.1 TANKHEIGHT Select unit m/cm/mm/

inch/Ft

Enter

0.50 ... 20.00 [m]

Enter tank height (see explanatory

notes).

The unit entered here is also used for

all other length entries.

3.1.2 BLOCKDIST Enter

0.10 [m] ... tank height Enter block distance = non-measurable

range below bottom edge of flange (see

explanatory notes).

3.1.3 ANTENNA Select STANDARD

WAVE-STICK Select antenna type. WAVE-STICK for

all Wave-Stick versions, except type

"SW" for stillwells. All other =

STANDARD.

3.1.4 ANT.EXTENS. Enter 0.00 [m] ... tank height Enter length of antenna extension.

3.1.5 DIST.PIECE Enter 0 ... 2000 [mm] Enter length of distance piece above

flange (high temperature version =

120 mm).

3.1.6 STILLWELL Select NO / YES

If “YES“: enter 25 ... 200 [mm] Selection: without or with still well.

With still well: enter inside diameter in

[mm] (compensates different wave

speeds in still wells)

3.1.7 REF.OFFSET Enter -10.00...0...+10.00 [m] Reference offset is added to measured

distance values.

3.1.8 TB.OFFSET Enter -100.00...0...+100.00 [m] Tank bottom offset is added to

measured level values.

3.2 DISPLAY

3.2.1 FCT.DISP Select LEVEL

DISTANCE

CONVERSION

Select function of display

(value to be displayed).

(see also explanatory notes)

3.2.2 UNIT.LENGTH Select m/cm/mm/

inch/Ft/

PERCENT/BARGRAPH

Select unit for length value to be

displayed (only for level and distance).

3.2.3 UNIT.CONV. Select m3/l(Liter)/US Gal/

GB Gal/Ft3/bbl/PERCENT/

BARGRAPH/USER UNIT

Select unit for conversion value to be

displayed (“volume table“).

(see explanatory notes)

3.2.4 USER UNIT Text entry

10 characters Enter user-defined unit for the

conversion table.

3.2.5 ERROR MSG. Select NO/YES Select whether error messages to be

shown in display.

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