KROHNE BM102 User Manual

4 (1)
KROHNE BM102 User Manual

© KROHNE 03/2004

7.02229.33.00

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GR

Installation and

Operating Instructions

BM 102

MICROFLEX

T D R Level gauge

2-WIRE

Variable area flowmeters

Vortex flowmeters

Flow controllers

Electromagnetic flowmeters

Ultrasonic flowmeters

Mass flowmeters

Level measuring instruments

Communications technology

Engineering systems & solutions

Switches, counters, displays and recorders

Heat metering

Pressure and temperature

Subject to change without notice.

Table of contents

 

1

Mechanical installation .....................................................................................................

5

1.1

Handling and storage ..........................................................................................................

5

1.2

Installation restrictions .........................................................................................................

7

1.3

Mounting on the tank ...........................................................................................................

7

1.3.1

Installation Instructions: General notes................................................................................

7

1.3.2

Installation instructions: nozzle............................................................................................

7

1.3.3

Installation instructions: Gauge - all applications.................................................................

9

1.3.4

Specific installation instructions: gauge - liquid applications..............................................

12

1.3.5

Specific installation instructions: gauge - solid applications...............................................

13

2

Electrical connections ....................................................................................................

16

2.1

Electrical installation instructions .......................................................................................

16

2.1.1

Wiring general notes..........................................................................................................

16

2.1.2

Wiring connections: DIN connector ...................................................................................

16

2.1.3

Wiring connections: M16 terminal box...............................................................................

17

2.2

Power Supply ....................................................................................................................

17

2.2.1

Non-hazardous-duty version .............................................................................................

17

2.2.2

Hazardous-duty version.....................................................................................................

18

3

User interface...................................................................................................................

19

3.1

Power-on and start-up .......................................................................................................

19

3.2

Available user interfaces ...................................................................................................

19

3.3

Operator control and display .............................................................................................

19

3.3.1

PCSTAR 2 Version 2.01 for Windows : basic installation & operating instructions............

19

3.3.2

HART® Communicator......................................................................................................

21

3.3.3

Local user display (instruments equipped with DIN connectors only)................................

22

3.4

Fault clearing.....................................................................................................................

23

4

Technical data..................................................................................................................

26

4.1

Technical data ...................................................................................................................

26

4.2

BM 102 equipment architecture.........................................................................................

29

4.2.1

BM 102 mechanical options (by probe type) .....................................................................

29

4.2.2

Probe measurement limits.................................................................................................

31

4.3

Gauge dimensions.............................................................................................................

32

2

BM 102

Device description and range of applications

The BM 102 MICROFLEX level gauge uses the Time Domain Reflectometry (TDR) measuring principle and two-wire technology for level measurement. It is designed solely for measuring the distance, level, volume and ullage of liquids, pastes, slurries and powders. It can continue to measure the level or distance of the top product and total volume in applications with two or more products.

The level measurement data can be displayed and the gauge configured using either a HART Handheld Communicator console (HHC) or a PC work station equipped with PCSTAR 2 software which is supplied as standard with the gauge.

Principal gauge components

BM 102 housing and probes (non-Ex and Ex versions)

with high-

with raising

 

temperature

converter

 

option

option

1Nameplate (see next page for details)

2Cable entry (output and power supply) to wiring compartment

3Equi-potential bonding system connection (for Ex applications)

4Flange (process connection onto tank or other suitable mounting)

5Single cable probe

6Counterweight (with threaded hole in base for anchoring)

7Twin cable probe

8Spacer

9Chuck (for single cable probes)

10Turnbuckle (for twin or single cable probes)

11Threaded process connection (e.g. G1, NPT1, …)

12Coaxial probe

13Extension tube for high temperature applications

14Single rod probe

15Raising converter: coaxial tube under the process connection (i.e. an inactive length of the probe) for installations with long nozzles or concrete roofs – for single rod and single cable probe versions only

BM 102

3

Standard nameplate

*eg. VF030415B0112110110100000. The “type code” is defined in the BM 102 Data Sheet. This document is available from your local KROHNE Sales office or in the “Download Centre” on KROHNE’s website http://www.krohne.com/.

Items included with supply

The scope of supply encompasses, in the version as ordered:

Signal converter with probe in the version ordered. The version is stated on the nameplate.

PCSTAR 2 computer software for data display and gauge configuration.

Documentation supplied:

Installation & Operating instructions (this manual):

Installation, connection, start-up and safety advice in condensed form, but sufficient for most applications. This is supplied as a printed document with the device delivered.

Handbook:

Detailed user manual and reference book, including how to configure meter parameters available in the user menu and how to perform basic maintenance. This is not shipped with the level meter ordered – it is available in the “Download Centre” on KROHNE’s website http://www.krohne.com/.

Supplementary Installation and Operating Instructions BM 102 KEMA 00 ATEX 1101X:

Supplementary instructions covering devices to be installed and used in hazardous areas. This document is only supplied with specially approved instruments. This document is available from your local KROHNE Sales office or on the “Download Centre” on KROHNE’s website http://www.krohne.com/.

4

BM 102

Product liability and warranty:

The BM 102 TDR level gauge is designed for measuring the distance, level, and volume of liquids, pastes, slurries, powders and cereal products. It may equally measure level, distance and total volume in applications with two or more products.

Special codes and regulations apply to its use in hazardous areas : please refer to the BM 102 MICROFLEX KEMA 00 ATEX 1101X Supplementary Installation and Operating Instructions for further information. This document is available from your local KROHNE Sales office or on the “Download Centre” on KROHNE’s website http://www.krohne.com/.

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 applicable.

If you need to return measuring instruments to KROHNE, please note the information given on the last page of these Instructions. KROHNE regrets that they cannot repair or check your device unless it is accompanied by the completed form sheet.

The level gauge does not form part of an overfill protection system (as defined for example in WHG: German water resources act) nor is it concerned by the Pressure Equipment Directive (PED) 97/23/EC.

1 Mechanical installation

1.1Handling and storage

To carry: the device will weigh between 3 kg or 7 lb and 12 kg or 25 lb. Carry using both hands to lift the device carefully by the converter housing. If necessary, use lifting gear.

No attempt should be made to lift the instrument by its probe.

Caution:

The probe is a critical gauge component.

Do not damage– Handle with care!!!

BM 102

5

Avoiding blows

When handling the BM 102, avoid hard blows, jolts, impacts, etc.

Caution:

Fragile electronics

Avoid bending (single rod and coaxial probes)

Support the probe to avoid bending.

Support probe here

Avoid cable kinks and fraying

Do not coil the cable less than 400 mm or 16 “ in diameter. Cable kinks or fraying will cause measurement errors.

Storage temperature

Store within the given storage temperature limits.

6

BM 102

1.2Installation restrictions

Hazardous-duty systems (Ex, FM,…)

Refer to the BM 102 MICROFLEX KEMA 00 ATEX 1101X Supplementary Installation and Operating Instructions supplementary instructions for further information on installing gauges approved for use in hazardous locations. This document is available from your local KROHNE Sales office or on the “Download Centre” on KROHNE’s website http://www.krohne.com/.

Check that the flange, gasket and probe materials are compatible with the product. Read the information given on the converter nameplate, the flange markings and specifications in the approval certificates.

1.3Mounting on the tank

1.3.1 Installation Instructions: General notes

The fitter should give some thought to tank fittings and tank shape.

Nozzle position in relation to the tank walls and other objects inside the tanks

(Warning : this free area will depend on the probe type selected: refer to later on in this section)

Type of tank roof , i.e. floating, concrete, integral, etc; and base, i.e. conical, etc.

Whenever working on an installation, remember to:

Disconnect the power supply before starting work.

Drain the tank completely before installing the device (not applicable to cable probes).

1.3.2 Installation instructions: nozzle

Threaded process connections

The simplest and most economic way is to mount the BM 102 directly on the tank with a GAS or NPT threaded connection.

Nozzle height

Recommendation

Do not fit a nozzle longer than its diameter , especially for single probes and powder applications

h ≤ Ød , where h = nozzle height and d = nozzle diameter

Contact KROHNE if this relationship cannot be respected.

BM 102

7

Nozzles extending into tank

Caution:

Do not use nozzles that extend into the tank. This will disturb the electromagnetic emitted pulse and the measurement.

Installation of two devices

If two devices are to be used on the same tank, these should be mounted a distance of at least 2 m or 6 ¾ ft away from each other. If not, interferences from the electromagnetic (EM) fields generated by both instruments may cause measurement errors.

Not applicable to coaxial probes - the outer shell of the probe contains the EM field: no minimum distance required.

Process connection

For the gauge to make accurate measurements:

The tank process connection must be level.

Ensure a good fit with the gauge process connection

The tank roof should not deform under the weight of the gauge

8

BM 102

Process connection and entry pipe

Caution:

Do not put the nozzle close to the entry pipe. Pouring the product directly onto the probe will give false readings. Install deflector plate if impossible to distance gauge from entry pipe.

Stilling wells

Tanks with floating roofs for petro-chemical applications: use a stilling well.

1 Stilling well

2 Tank

3 Floating roof

4 Product (petroleum applications)

5 Well fixed to tank base (no roof deformation)

6 Sediment

1.3.3 Installation instructions: Gauge - all applications

BM102 gauges are designed to be mounted on a suitable process connection on a tank or sump. Install the gauge using two people to avoid damaging the probe. Support the housing and the probe.

BM 102

9

Installation of level meters with single or twin cable probes

1Caution :

Do not over-bend probe!

2Inserting the probe: hold more than one metre above the opening to avoid cable bending.

Probes: entanglement, straightness and tank bottom clearance

Rigid section length of single and twin cable probes

Cable diameter

Rigid section length

Single cable

 

Ø4mm/0.15”

40mm or 1½”

Ø4mm/0.15”

200mm or 8”

Twin cable

 

Ø4mm/0.15”

40mm or 1½”

Cable probes must be straight once inserted into the tank. They must also be far from other objects (e.g. mixers) to avoid entanglement.

In order to maintain the gauge’s operating characteristics, it is recommended to avoid touching the tank bottom with the counterweights (for cable probes) or probe end (other types).

Objects (discontinuities) inside the tank that influence the probe’s EM (electromagnetic) field

Install the gauge far from protruding objects such as:

Heating tubes,

Sudden changes in tank cross-section,

Tank wall reinforcements and beams,

Weld lines and dip-stick pipes, etc...

TDR gauges generate electromagnetic (EM) fields when a measurement pulse is emitted. This field is affected by any nearby discontinuities and these will weaken and potentially block the emitted pulse. A minimum distance is recommended depending on the probe type to be installed. See the table on the next page for recommended free space dimensions.

Alternatively, the fitter may use a reference chamber or stilling well. However, the chamber walls must be smooth (i.e. no visible weld lines), straight and vertical to maintain the pulse strength and gauge accuracy.

10

BM 102

Loading...
+ 23 hidden pages