KROHNE BM26 User Manual

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Handbook

BM 26 BASIC/ADVANCED

BM 26 BASIC/ADVANCEDBM 26 BASIC/ADVANCED

Stainless Steel Bypass Level Indicators for applications up to 40 bar / 580 psi

HandbookHandbook

: IMPRINT :::::::::::::::::::::::::::::::::::::::

BM 2

Subject to change without notice.

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BM 26 BASIC/ADVANCED

CONTENTS

1 Safety instructions 5

1.1 Intended use ..................................................................................................................... 5

1.2 Certification ...................................................................................................................... 5

1.3 Safety instructions from the manufacturer ..................................................................... 6

1.3.1 Disclaimer ............................................................................................................................... 6

1.3.2 Product liability and warranty ................................................................................................ 7

1.3.3 Information concerning the documentation........................................................................... 7

1.3.4 Warnings and symbols used................................................................................................... 8

1.4 Safety instructions for the operator................................................................................. 8

2 Device description 9

2.1 Scope of delivery............................................................................................................... 9

2.2 Device description .......................................................................................................... 10

2.3 Nameplates .................................................................................................................... 11

2.3.1 Visual Check.......................................................................................................................... 11

2.3.2 Nameplates........................................................................................................................... 11

2.3.3 Other device data .................................................................................................................. 14

3 Installation 15

3.1 Storage ........................................................................................................................... 15

3.2 Transportation ................................................................................................................ 16

3.3 Remove all packing before installation ......................................................................... 16

3.4 General requirements .................................................................................................... 18

3.4.1 Pressure and temperature ranges....................................................................................... 18

3.4.2 How to attach the bypass level indicator to the tank ........................................................... 19

3.5 Level indicator column................................................................................................... 21

3.6 Optional analog transmitter ........................................................................................... 22

3.7 Optional limit switch....................................................................................................... 23

3.8 Electromagnetic compatibility ....................................................................................... 26

4 Electrical connections 27

4.1 Optional analog transmitter ........................................................................................... 27

4.2 Optional limit switches ................................................................................................... 29

4.3 Protection category ........................................................................................................30

5 Start-up 31

5.1 Start-up checklist........................................................................................................... 31

5.2 Operating concept ..........................................................................................................31

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CONTENTS

BM 26 BASIC/ADVANCED

6 Operation 32

6.1 Local display options ......................................................................................................32

6.1.1 Level indicator column ......................................................................................................... 32

6.1.2 Analog transmitter (option) .................................................................................................. 33

6.2 Errors.............................................................................................................................. 37

6.2.1 Error indication ..................................................................................................................... 37

6.2.2 Error handling....................................................................................................................... 38

7 Service 41

7.1 Periodic maintenance..................................................................................................... 41

7.2 Keep the device clean..................................................................................................... 41

7.3 How to replace device components ............................................................................... 41

7.3.1 Service warranty ................................................................................................................... 41

7.4 Availability of services .................................................................................................... 42

7.4.1 General notes........................................................................................................................ 42

7.4.2 List of spare parts................................................................................................................. 42

7.4.3 List of accessories ................................................................................................................ 43

7.5 Availability of services .................................................................................................... 43

7.6 Returning the device to the manufacturer..................................................................... 44

7.6.1 General information.............................................................................................................. 44

7.6.2 Form (for copying) to accompany a returned device............................................................ 45

7.7 Disposal .......................................................................................................................... 45

8 Technical data 46

8.1 Measuring principle........................................................................................................46

8.2 Technical data: general information .............................................................................. 47

8.3 Technical data: optional analog transmitter.................................................................. 51

8.4 Technical data: optional limit switches.......................................................................... 56

8.5 Basic version: Dimensions and weights ........................................................................ 58

8.6 Advanced version: Dimensions and weights.................................................................. 66

8.7 Analog transmitter: Dimensions and weight ................................................................. 74

8.8 Support bracket option: Dimensions and weight........................................................... 75

8.9 Guidelines for maximum operating pressure................................................................ 76

8.10 Floats ............................................................................................................................ 78

9 Appendix 79

9.1 Liquid level offset: description....................................................................................... 79

9.2 Liquid level offset: correction data ................................................................................ 80

9.3 Glossary .......................................................................................................................... 83

9.4 Order code ...................................................................................................................... 84

9.5 Spare parts code ............................................................................................................ 92

10 Notes 94

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BM 26 BASIC/ADVANCED

1.1 Intended use

This magnetic level indicator measures the level or volume of liquids.

It is installed next to open or pressurized tanks. With the applicable options, it is resistant to difficult service conditions and liquids that are poisonous, flammable, or that cause corrosion.

CAUTION!

Responsibility for the use of the measuring devices with regard to suitability, intended use and corrosion resistance of the used materials against the measured fluid lies solely with the operator.

INFORMATION!

The manufacturer is not liable for any damage resulting from improper use or use for other than the intended purpose.

1.2 Certification

SAFETY INSTRUCTIONS 1

In accordance with KROHNE’s commitment to customer service and safety, the level indicators

described in this handbook meet the following safety requirements:

• EMC Directive 2004/108/EC in conjunction with EN 61326-1: 2006

• Low Voltage Directive 2006/95/EC in conjunction with EN 61010-1: 2001

• Pressure Equipment Directive 97/23/EC in conjunction with CODAP® 2010

INFORMATION!

The optimized design of the Basic version is not subject to PED test requirements (CE marking is not applicable). The Advanced version agrees with the requirements for CE marking. The Low Voltage Directive is only applicable to limit switches (non-NAMUR option).

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1 SAFETY INSTRUCTIONS

1.3 Safety instructions from the manufacturer

1.3.1 Disclaimer

The manufacturer will not be liable for any damage of any kind by using its product, including, but not limited to direct, indirect or incidental and consequential damages.

This disclaimer does not apply in case the manufacturer has acted on purpose or with gross negligence. In the event any applicable law does not allow such limitations on implied warranties or the exclusion of limitation of certain damages, you may, if such law applies to you, not be subject to some or all of the above disclaimer, exclusions or limitations.

Any product purchased from the manufacturer is warranted in accordance with the relevant product documentation and our Terms and Conditions of Sale.

The manufacturer reserves the right to alter the content of its documents, including this disclaimer in any way, at any time, for any reason, without prior notification, and will not be liable in any way for possible consequences of such changes.

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1.3.2 Product liability and warranty

Bypass level indicators from KROHNE are designed solely for measuring the level and volume of liquids.

Responsibility as to suitability and intended use of these level indicators rests solely with the operator. The supplier does not accept any liability resulting from misuse by the operator. Improper installation and operation of the level transmitters may lead to loss of warranty. In

addition, the “General conditions of sale“ which forms the basis of the purchase agreement are

applicable.

1.3.3 Information concerning the documentation

To prevent any injury to the user or damage to the device it is essential that you read the information in this document and observe applicable national standards, safety requirements and accident prevention regulations.

If this document is not in your native language and if you have any problems understanding the text, we advise you to contact your local office for assistance. The manufacturer can not accept responsibility for any damage or injury caused by misunderstanding of the information in this document.

SAFETY INSTRUCTIONS 1

This document is provided to help you establish operating conditions, which will permit safe and efficient use of this device. Special considerations and precautions are also described in the document, which appear in the form of underneath icons.

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1 SAFETY INSTRUCTIONS

1.3.4 Warnings and symbols used

Safety warnings are indicated by the following symbols.

DANGER!

This information refers to the immediate danger when working with electricity.

DANGER!

This warning refers to the immediate danger of burns caused by heat or hot surfaces.

DANGER!

This warning refers to the immediate danger when using this device in a hazardous atmosphere.

DANGER!

These warnings must be observed without fail. Even partial disregard of this warning can lead to serious health problems and even death. There is also the risk of seriously damaging the device or parts of the operator's plant.

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WARNING!

Disregarding this safety warning, even if only in part, poses the risk of serious health problems. There is also the risk of damaging the device or parts of the operator's plant.

CAUTION!

Disregarding these instructions can result in damage to the device or to parts of the operator's plant.

INFORMATION!

These instructions contain important information for the handling of the device.

LEGAL NOTICE!

This note contains information on statutory directives and standards.

• HANDLING

HANDLING

HANDLINGHANDLING

This symbol designates all instructions for actions to be carried out by the operator in the specified sequence.

i RESULT

RESULT

RESULTRESULT This symbol refers to all important consequences of the previous actions.

1.4 Safety instructions for the operator

WARNING!

In general, devices from the manufacturer may only be installed, commissioned, operated and maintained by properly trained and authorized personnel. This document is provided to help you establish operating conditions, which will permit safe and efficient use of this device.

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2.1 Scope of delivery

INFORMATION!

Check the packing list to see if you have received all that you require. The device will be delivered in one box.

INFORMATION!

Inspect the cartons carefully for damages or signs of rough handling. Report damage to the carrier and to the local office of the manufacturer.

DEVICE DESCRIPTION 2

Figure 2-1: Scope of delivery

1 Measuring chamber with the indicator column and optional indicator scale 2 Optional analog transmitter 3 Optional limit switches (not attached to the device) 4 Magnet (to set the indicator column to zero after installation) 5 Quick Start and Handbook

INFORMATION!

No special tools, no training required!

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2 DEVICE DESCRIPTION

2.2 Device description

Magnetic level indicators have a measuring chamber that contains a magnetic float. It is attached vertically to the side of open or pressurized tanks. A level indicator is attached adjacent to the measuring chamber. As the float moves up and down, it rotates a column of flaps inside the glass tube of the indicator. If an analog level transmitter is also attached adjacent to the measuring chamber, it is possible to have an output current that can be monitored from a remote station. Optional bistable switches let the user monitor important measurement limits.

BM 26 BASIC/ADVANCED

The measuring chamber of the Basic 232 psig (depending on the length of the chamber). It is unnecessary to test the measuring chamber according to PED 97/23/EC as it does not have to comply with CE marking

requirements. It is also ideal for measuring liquids with a density ≥0.8 kg/l / ≥49.9 lb/ft³ and temperatures up to 150°C/ 300°F.

The Advanced

Advanced version is ideal for measuring liquids with density range of 0.58...2.0 kg/l /

AdvancedAdvanced

36.2...124.8 lb/ft³, temperatures up to 300°C/ 570°F or pressures up to 40 barg / 580 psig.

Basic version has a maximum operating pressure of 16 barg /

BasicBasic

WARNING!

Pressure Equipment Directive 97/23/EC data

•

This device is designed to function at near constant pressure conditions. It is not designed for operating conditions where vibration or fatigue stress is present.

•

Events that are not taken into account in the calculations include exceptional risks such as: earthquakes, bad weather, fire etc.

•

The standard design calculation does not take into account the theoretical coefficient of corrosion. The product circulating in the device must not have properties that give rise to surface erosion.

•

Our conformity declaration is limited to the parts of the device that are pressurized. It does not include parts that can be dismantled (valves, ...).

You can also order these accessories:

• Limit switches

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BM 26 BASIC/ADVANCED

2.3 Nameplates

INFORMATION!

Look at the device nameplate to ensure that the device is delivered according to your order. Check for the correct supply voltage printed on the nameplate.

2.3.1 Visual Check

DEVICE DESCRIPTION 2

Figure 2-2: Visual check

• Check the delivery for damage.

• Are all the wetted components (chamber, flanges and gaskets) resistant to the product in the

tank?

• Compare the data on the nameplate with your order data.

2.3.2 Nameplates

Figure 2-3: Location of device nameplates

1 Measuring chamber nameplate 2 Analog transmitter nameplate 3 Limit switch nameplate (housing cover) 4 Limit switch nameplate (housing)

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2 DEVICE DESCRIPTION

Figure 2-4: Basic version: Non-Ex nameplate

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Figure 2-5: Advanced version: Non-Ex nameplate

1 Customer tag number 2 Measuring tube volume in litres 3 Maximum allowable pressure (P

4 Factory serial number 5 Purchase order number 6 Model name and number 7 Designation code (VF code given in the order) 8 Year of manufacture 9 Maximum allowable temperature (T

10 Test pressure (P

ment Directive 97/23/EC.

at 20°C) - if the device agrees with the requirements of Categories I, II or III of the Pressure Equip-

)

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Figure 2-6: Limit switch: Non-Ex nameplate (housing cover)

1 Non-NAMUR option 2 NAMUR option 3 Model 4 Designation code (VF code given in the order) 5 Date of manufacture 6 Factory serial number and bar code 7 Electrical data

DEVICE DESCRIPTION 2

Figure 2-7: Limit switch: Non-Ex nameplate (housing)

1 Non-NAMUR option 2 NAMUR option 3 Electrical schema 4 Factory serial number

Figure 2-8: Analog transmitter: Non-Ex nameplate

1 Model 2 Designation code (VF code given in the order) 3 Date of manufacture 4 Factory serial number 5 Input voltage

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2 DEVICE DESCRIPTION

2.3.3 Other device data

The supplier's bottom logo plate has a sticker:

Figure 2-9: Other device data

1 Float data sticker

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Figure 2-10: Float data sticker

1 Test pressure, PT, in bar 2 Maximum allowable pressure, PS, in bar 3 Float drawing number 4 Float material

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3.1 Storage

INSTALLATION 3

Figure 3-1: Storage conditions

1 Do not keep the device in a vertical position before installation. 2 Put the device on its side. 3 Storage temperature range: -50…+80°C/ -58…+176°F

• Store the device in a dry and dust-free location.

• Store the device in its original packing.

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3 INSTALLATION

3.2 Transportation

Figure 3-2: Transportation

WARNING!

The indicator column is made of Pyrex If you do not lift the device carefully, you can cause damage to the device.

glass.

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3.3 Remove all packing before installation

CAUTION!

Make sure that the measuring chamber does not contain unwanted objects (dirt etc.)

How to remove the float lock pin (devices with side process connections)

Figure 3-3: How to remove the float lock pin (devices with side process connections)

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How to remove the float lock pin (devices with side process connections)

1 Check the measuring chamber for a red sticker next to the bottom side process connection.

i Sticker text: ATTENTION! Take away transport safety device for float.

2 Remove the adhesive tape around the top and bottom process connections. 3 Remove the plastic protection from the top and bottom process connections. 4 Find the lock pin. 5 Remove the lock pin with a pair of pliers.

How to put the float in the measuring chamber

INSTALLATION 3

Figure 3-4: How to put the float in the measuring chamber (if it is delivered separately)

1 Put the float in here 2 Float 3 The float data (date of manufacture, P

the measuring chamber

, float material etc.) must be at the top of the float when you put the float in

s/Pt

How to put the float in the measuring chamber (if it is delivered separately)

• Remove the bottom blind flange or plug (if the basic version has the 1¼¨ drain option).

• Put the top of the float (the float data is on the top part of the float) in the measuring chamber

first.

• Align the gaskets.

• Tighten the nuts on the blind flange to the correct torque (11 Nm in operating conditions,

23.5 Nm in test conditions). The 1¼¨ plug must be tightened in agreement with good

engineering practice.

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3 INSTALLATION

3.4 General requirements

3.4.1 Pressure and temperature ranges

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1 Process temperature

Basic version: -40…+150°C/ -40…300°F Advanced version: -40...+300°C/ -40…570°F Ex devices: refer to supplementary instructions

2 Maximum process pressure

Basic version: 16 barg / 232 psig (depends on the length of the measuring chamber. For more data, refer to

for maximum operating pressure

Advanced version: 40 barg / 580 psig (according to the flange pressure rating. For more data, refer to

maximum operating pressure

3 Ambient temperature

Non-Ex devices: -40…+80°C/ -40…+176°F Ex devices: refer to supplementary instructions

on page 76).

Guidelines

Guidelines for

WARNING!

Refer to the operating conditions data on the device nameplate. The data is applicable to that device.

WARNING!

PED 97/23/EC requirement:

PED 97/23/EC requirement: External pressure must be equal to atmospheric pressure.

PED 97/23/EC requirement:PED 97/23/EC requirement:

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BM 26 BASIC/ADVANCED

3.4.2 How to attach the bypass level indicator to the tank

INSTALLATION 3

Figure 3-5: How to attach the bypass level indicator to the tank

1 Optional isolation valve 2 Optional vent 3 Optional drain with isolation valve

Obey the instructions that follow:

• Select bolts and gaskets (not supplied) that agree with the pressure rating of the process connection and the operating pressure.

• Install the bypass level indicator vertically on the tank.

• Make sure that there is no contamination (dirt etc.) or unwanted objects in the measuring

chamber.

• Make sure that mechanical loadings do not cause damage to the process connections. If necessary, put supports on the device.

• Install shut-off valves so that the device can be cleaned separately from the tank. Drain the device only when it is isolated from the tank.

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3 INSTALLATION

Figure 3-6: Stay away from the process connections

WARNING!

Stay away from the process connections. If you stand on the process connections, you can cause damage to the device and the installation.

BM 26 BASIC/ADVANCED

DANGER!

Make sure that the outer surface temperature of the device is not more than 60

surface temperature is more than 60

C / 140°F, use the device with precautions that agree with

C / 140°F. If the

Health and Safety rules and regulations.

WARNING!

Pressure Equipment Directive 97/23/EC data

•

The process connections must be attached correctly to prevent mechanical stress. The axis of the process connection must be parallel to and centred with the axis of the tank's process connections. Tighten the process connections in agreement with the design code.

•

The user must take necessary steps to protect the installed device from shock waves (water hammer). A pressure limiting valve must protect the installation.

•

The effective pressure of the installation (the maximum permitted by the pressure limiting valve) must never be greater than the maximum permitted pressure, P

device nameplate.

•

Make sure that the parts in contact with the fluid are compatible with the fluid and conform to the ageing characteristics of the measurement environment and the fluid used. These have either been recommended in the instructions or form the subject of a particular specification in the contract.

•

The external pressure, P

•

If stainless steel devices are more than 6 m / 20 ft high, we recommend more anchoring

, must be equal to atmospheric pressure, P

ext

points.

, marked on the

atmos

ext

= P

atmos

CAUTION!

Before you fill the tank, make sure that the column of rotating flaps is set to zero (the flaps are all black). If not, the device may incorrectly indicate the level.

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BM 26 BASIC/ADVANCED

Figure 3-7: Set the indicator column to zero

1 Magnet - point the red end of the magnet at the glass tube

Equipment needed:

• Magnet (supplied with the device)

INSTALLATION 3

How to make sure the column of rotating flaps is set to zero

• Hold the magnet in front of the glass tube at the bottom of the indicator column.

i Make sure the red end of the magnet points at the glass tube.

• Move the magnet slowly up to the top the glass tube.

i The flaps all turn to black. The indicator column is set to zero. You can now fill the tank.

3.5 Level indicator column

The level indicator column is attached to the measuring chamber before delivery. Customer order data is used to calibrate its position. No other adjustment is necessary.

CAUTION!

Customer order data is used to calibrate the device. If liquid density changes, the device will not measure correctly. Please contact our nearest sales office for advice.

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3 INSTALLATION

3.6 Optional analog transmitter

The analog transmitter is attached to the measuring chamber before delivery. Customer order data is used to calibrate its position. No other adjustment is necessary.

WARNING!

Too much heat can cause damage to the analog transmitter. If the process temperature is more

than 120 the process temperature is more than 150 transmitter.

C / 250°F, put insulation between the bypass chamber and the analog transmitter. If

BM 26 BASIC/ADVANCED

C / 300°F, do not cover any part of the analog

Figure 3-8: Analog transmitter and insulation for the bypass chamber

1 Analog transmitter 2 Bypass chamber (cross-section) 3 If temperature is more 120°C/ 250°F, put insulation between the bypass chamber and the analog transmitter 4 Insulation (cross-section). If temperature is more 150°C/ 300°F, do not cover any part of the analog transmitter with

insulation.

CAUTION!

Do not move the analog transmitter. If you adjust the position of this device, the current output will be incorrect.

CAUTION!

Customer order data is used to calibrate the device. If liquid density changes, the device will not measure correctly. Please contact our nearest sales office for advice.

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3.7 Optional limit switch

INFORMATION!

The level switches are not attached to the device before delivery. Remove the switches from the packing and obey the instructions that follow.

WARNING!

Too much heat can cause damage to the limit switch. If you put insulation around the bypass level indicator, do not cover the limit switch housing. Make sure that there is approximately

15 mm / 0.6

of empty space between the limit switch and the insulation.

INSTALLATION 3

Figure 3-9: Limit switches and insulation for the measuring chamber

1 Limit switch housing 2 Insulation around the measuring chamber (cross-section) 3 Measuring chamber (cross-section)

Empty space between the limit switch and the insulation for the measuring chamber, a ≥15 mm / 0.6¨.

CAUTION!

If liquid density changes, the switch will not detect level correctly. Recalculate the position of the switch according to the true liquid density and repeat the installation procedure that follows.

CAUTION!

The switching point of the switch when the level increases is not in the same as the switching point of the switch when the level decreases. Does the limit switch have to be open when the float is above (for HIGH limit switches) or below (for LOW limit switches) the switching point? For more data, refer to Definition of switching point offset

Definition of switching point offset.

Definition of switching point offsetDefinition of switching point offset

WARNING!

If you put insulation around the bypass level indicator, do not cover the limit switch housing. Too much heat can cause damage to the limit switch.

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3 INSTALLATION

Figure 3-10: How to attach a limit switch

1 Limit switch 2 Switching point centreline 3 Level indicator and optional measuring scale 4 Limit switch clamp

Equipment needed:

• Large slotted tip screwdriver (not supplied)

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Installation procedure

• Use the clamp to attach the limit switch to the measuring chamber. Do not tighten the clamp.

i The cable gland must be at the bottom of the housing.

• Move the limit switch until the switching point centreline is at the level required. Refer to the

level indicator scale to help you position the limit switch.

i If the indicator column does not have the scale option, it will be necessary to calculate the

vertical offset of the float magnet in relation to the level of the liquid (depends on the liquid density). Adjust the switch position for the float magnet offset. For the vertical offset tables, refer to the appendix in the Handbook.

• Adjust the switch position for the switching point offset.

i If the limit switch is set to LOW limit

LOW limit (the switch is open

LOW limitLOW limit

open when the float is below the

openopen switching point), move the switch up a small distance to adjust for the offset. If the limit switch is set to HIGH limit

HIGH limit (the switch is open

HIGH limitHIGH limit

open when the float is above the switching point),

openopen move the switch down a small distance to adjust for the offset. For more data, refer to Definition of switching point offset

Definition of switching point offset and Switching point offset values

Definition of switching point offsetDefinition of switching point offset

Switching point offset values.

Switching point offset valuesSwitching point offset values

• Tighten the limit switch clamp.

WARNING!

Make sure the cable gland is on the bottom the housing and is tight to stop liquid entering the housing.

INFORMATION!

Liquid level offset

Liquid level offsetLiquid level offset For a description of the liquid level offset, refer to Liquid level offset: description on page 79

the graphs and other correction data, refer to

Liquid level offset: correction data on page 80

. For

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Definition of switching point offset

Figure 3-11: Switching point offset

1 Zero point of the limit switch 2 Zero point of the limit switch 3 Float and float magnet (switching point is in relation to the top of the magnet) 4 True switching point above a limit switch (the switch is open when the liquid level goes above this point - a HIGH limit

switch)

5 True switching point below the limit switch (the switch is open when the liquid level goes below this point - a LOW limit

switch)

INSTALLATION 3

HIGH limit

HIGH limitHIGH limit

LOW limit

LOW limitLOW limit

Switching point offset values

Conditions Switching point offset, a

mm inches

When the switch must be open above the switching point (a HIGH limit move the switch below the switching point:

When the switch must be open below the switching point (a LOW limit move the switch above the switching point:

HIGH limit switch),

HIGH limitHIGH limit

LOW limit switch),

LOW limitLOW limit

15 0.6

0 0

Installation of a limit switch for float failure detection

• Make sure the measuring chamber is empty and the float is in the chamber.

• Attach a limit switch to the bottom of the measuring chamber. Do not tighten the clamp.

• Connect the limit switch to the electrical circuit. Make sure that it is set to LOW limit

data, refer to

Optional limit switches

on page 29.

LOW limit. For more

LOW limitLOW limit

• Energize the electrical circuit.

• Lift the limit switch up the measuring chamber until the limit switch status changes to open

open.

openopen

• Hold the limit switch tightly in this position and tighten the clamp.

i The limit switch is in the correct position.

INFORMATION!

The float will go to the bottom of the measuring chamber for the reasons that follow:

•

damaged or corroded float (float failure),

•

liquid density that does not correspond to the specifications received with the order and

•

draining the measuring chamber

For more data, refer to Errors

Errors on page 37.

ErrorsErrors

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3 INSTALLATION

3.8 Electromagnetic compatibility

The design of the device agrees with European Standard EN 61326-1 and Immunity and Emissions requirements for industrial environments.

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4.1 Optional analog transmitter

• Remove the terminal compartment cover.

• Connect the device to the electrical circuit. Obey the national electrical codes.

ELECTRICAL CONNECTIONS 4

Figure 4-1: Electrical schematic for the 4...20 mA output module

1 Power supply terminals 2 Internal wiring - brown wire 3 Internal wiring - red wire 4 Optional LCD indicator 5 Power supply (+) - if optional LCD connected - red wire 6 Power supply (-) - if optional LCD connected - black wire 7 LCD power supply terminal (10...35 VDC)

Figure 4-2: Electrical schematic for the 4...20 mA + HART output module

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4 ELECTRICAL CONNECTIONS

Figure 4-3: Electrical schematic for the FOUNDATION™ Fieldbus / PROFIBUS PA module

1 Bus connection terminals 2 Segment coupler 3 Bus termination 4 Internal wiring - orange wire 5 Internal wiring - brown wire

BM 26 BASIC/ADVANCED

For more electrical data, refer to

Technical data: optional analog transmitter

on page 51.

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4.2 Optional limit switches

Figure 4-4: Terminal compartment

1 Terminal compartment cover 2 Bistable reed switch 3 Output terminal

• Remove the terminal compartment cover.

• Connect the device to the electrical circuit. Obey the national electrical codes.

ELECTRICAL CONNECTIONS 4

1 2 3

WARNING!

If the switch is set to LOW limit

LOW limit, make sure that switch is open

LOW limitLOW limit position. If the switch is set to HIGH limit

HIGH limit, make sure that switch is open

HIGH limitHIGH limit position.

Figure 4-5: Electrical schema

1 Non-NAMUR version 2 NAMUR version

For more electrical data, refer to

open when the float is below the switch

openopen

open when the float is above the switch

openopen

Technical data: optional limit switches

on page 56.

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4 ELECTRICAL CONNECTIONS

4.3 Protection category

For the IP categories of the accessories for the device, refer to the table that follows:

Protection categories according to EN 60529

Equipment housing IP category

Analog transmitter

Non-Ex / Ex i (without indicator) 54

Non-Ex / Ex i (with indicator) 66

Limit switches

Non-Ex / Ex i 66

DANGER!

Make sure the cable gland is watertight.

BM 26 BASIC/ADVANCED

Figure 4-6: Protection category

How to make sure that the electrical installation agrees with the protection category

• Make sure that the gaskets are not damaged.

• Make sure that the electrical cables are not damaged.

• Make sure that the electrical cables agree with the national electrical code.

• The cables are in a loop in front of the device 1 so water cannot enter the housing.

• Tighten the cable glands 2.

• Close unused cable glands with dummy plugs 3.

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BM 26 BASIC/ADVANCED

5.1 Start-up checklist

Check these points before you use the device:

• Are all the wetted components (chamber, flanges and gaskets) resistant to the product in the

tank?

• Does the information on the nameplate agree with the operating data?

• Did you correctly install the device on the tank?

• Do the electrical connections agree with the national electrical codes?

DANGER!

Make sure that the device and the installation agrees with the requirements of the Ex certificate of compliance.

Start-up procedure

• Attach the drainage plugs or close the drainage cock.

• Slowly open the shut-off valves on the top and bottom process connections.

WARNING!

Risk of damage to the device from shock waves. Open the valves slowly to prevent damange from water hammer. Use a pressure-limiting valve to prevent damage to the installation.

START-UP 5

WARNING!

The device must have regular servicing to agree with rules and regulations of the site it is installed on.

WARNING!

High-temperature versions: risk of burns. Do not go too near to the device.

5.2 Operating concept

You can read measurements in several ways:

• Level is indicated by a column of rotating flaps.

• Level is detected by optional limit switches installed at important points adjacent to the

measuring chamber.

• Level is monitored remotely by an optional analog transmitter (2-wire, reed-chain) adjacent

to the measuring chamber. There is a large choice of outputs (4...20 mA, 4...20 mA + HART, FF and PROFIBUS PA). An LCD indicator option is also available for this transmitter.

CAUTION!

Customer order data is used to calibrate the device. If liquid density changes, the device will not measure correctly. For more data, refer to Error handling on page 38

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6 OPERATION

6.1 Local display options

6.1.1 Level indicator column

BM 26 BASIC/ADVANCED

Figure 6-1: Display of data on a indicator column

1 Standard level indicator without a measuring scale 2 Optional measuring scale in m/cm, ft/in or m³ 3 Yellow flaps: level of the liquid in the tank 4 Black flaps: empty volume 5 Red flaps: float failure

WARNING!

If the red flaps are shown, either:

•

the float sunk to the bottom of the measuring chamber,

•

the measuring chamber has been completely drained or

•

the product density is less than the value given in the order.

Contact your nearest sales office for advice.

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BM 26 BASIC/ADVANCED

6.1.2 Analog transmitter (option)

General notes

General notesGeneral notes The analog transmitter has transmitter modules for analog and digital outputs. The user can do

the configuration of 4...20 mA + HART®, FOUNDATION™ Fieldbus and PROFIBUS PA® modules.

Use the web links in the table that follows to download the software and device description files.

Configuration data for transmitter modules

OPERATION 6

Transmitter Manufacturer User configuration

Yes / No?

4...20 mA INOR No - -

4...20 mA + HART® PR Yes PReset 1 "PRetop 5335" HART DD,

FOUNDATION™ Fieldbus

PROFIBUS PA® PR Yes PReset 1 "5350" GSD files 1

1 Go to the PR electronics website: www.prelectronics.com (Download Center > Software)

PR Yes PReset 1 "5350" DD files 1

Software Device description

files

AMS and DTM files

For more data about the configuration of the 4...20 mA + HART®, FOUNDATION™ Fieldbus and PROFIBUS PA® modules, you can download technical documents from the PR electronics

website: www.prelectronics.com (Download Center > Manuals - Data Sheets - Certificates).

Figure 6-2: Analog transmitter with the optional indicator

1 Non-Ex and Ex i converter housing option 2 4-digit indicator (LCD)

The indications on the LCD are in millimetres by default, but inches and % can also be selected. The configuration of the indicator is given in the procedures that follow:

WARNING!

Do not open the housing and configure the indicator in a hazardous area.

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6 OPERATION

BM 26 BASIC/ADVANCED

Figure 6-3: Get access to the keypad on the indicator board

Equipment needed

• Sheet of stickers with measurement units (mm, inches and %)

• Small slotted tip screwdriver (not supplied)

Get access to the keypad on the indicator board

1 Remove the transmitter housing cover. 2 Remove the screws that hold the indicator board on the housing. 3 Turn the indicator board to use the 3-button keypad ([], [FFFF] and []) on the back of the board

to change the units. Refer to the tables that follow for key functions and the example procedure for configuration of the indicator.

4 Attach the indicator board to the housing. 5 Put the sticker with the correct measurement unit over the default units under the indicator

screen.

6 Attach the transmitter housing cover.

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BM 26 BASIC/ADVANCED

Figure 6-4: Back and front view of the indicator

1 Back of the indicator board (3-button keypad at the bottom) 2 Front of the indicator board (span range menu in program mode shown)

Key functions

Key Menu level Function level

[FFFF] (3 seconds) Access to program mode -

[FFFF] (1 second) Access to the function. Confirm the new parameter and go back

[] (down) Move down the list of functions Select parameter / decrease the value of

[] (up) Move up the list of functions Select parameter / increase the value of

[] + [] Escape - go back to the indication Escape - go back to the menu 1

1 This does not confirm that you selected a new parameter

OPERATION 6

to the menu.

the parameter. Push [] intermittently to decrease the value in increments of

0.1. Push [] continuously to decrease the value in increments of 1.

the parameter. Push [] intermittently to increase the value in increments of

0.1. Push [] continuously to increase the value in increments of 1.

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6 OPERATION

Menu overview

Function Function description Range/Selection list Default

BM 26 BASIC/ADVANCED

Decimal Point (dP) Push [] or [] to select

the decimal point position. Push [FFFF] to confirm.

Zero point (ZErO) Push [] or [] to select

the minimum value. Push [FFFF] to confirm.

Span range (SPAn) Push [] or [] to select

the maximum value. Push [FFFF] to confirm.

Input current limit (Li) Do not use. n/a 0

Filter (FiLt) Do not use. n/a 2

Resolution (riS) Do not use. n/a 1

0…3 1

-1999…+9999 0.0

-1999…+9999 100.0

Example procedure: Change the indicator units from mm to %

• Push [FFFF] for 3 seconds (button on the back of the indicator board) to access Program mode

i In program mode dP

• Push [] 1 time to get to the zero point (ZErO

dP is displayed.

dPdP

ZErO) function.

ZErOZErO

• Push [FFFF] to access the span range parameter. Make sure that the value is 0.0. Push [] + []

(Escape) to go back to the menu.

• Push [] 1 time to get to the span range (SPAn

SPAn) function.

SPAnSPAn

• Push [FFFF] to access the span range parameter.

Program mode.

Program modeProgram mode

i The current value is 600 (example value).

• Push [] to decrease the value to 100.

• Push [FFFF] to confirm the parameter and go back to the menu.

• Push [] + [] (Escape) to go back to the indication.

i The indication will display a value between 0 and 100 based on a current output of 4...20 mA.

• Put a new sticker (%) on the front of the indicator board.

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BM 26 BASIC/ADVANCED

6.2 Errors

6.2.1 Error indication

Indicator column

OPERATION 6

Figure 6-5: Error displayed on the indicator column

1 Indicator column (rotating flaps) 2 Red flaps: float failure

Analog transmitter

-OL OL

Figure 6-6: Error displayed on the optional LCD indicator for the analog transmitter

1 Error message if current output is < 3.6 mA 2 Error message if current output is > 22 mA

Limit switches

Limit switches can be used to indicate error conditions (Float failure, level detection etc.). For more data, refer to

Optional limit switch

on page 23.

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6 OPERATION

6.2.2 Error handling

Indicator column

Float failure The red flaps at the bottom of the

The level of the liquid is at or above the maximum level, but the indicator column doe not indicate that level has reached its maximum limit yet.

The indicator column indicates that the liquid is at or below the minimum level, but the level of the liquid is still above the minimum limit.

The level of the liquid is below the maximum level, but the indicator column indicates that level has already reached its maximum limit.

The indicator column is not yet at the minimum level, but the level of the liquid is at or below the minimum limit.

BM 26 BASIC/ADVANCED

Error Description Corrective action

indicator column are shown. The float has sunk to the bottom of the measuring chamber.

The density of the liquid is lower than the value given in the customer order data. The float is too low in the liquid.

The density of the liquid is lower than the value given in the customer order data. The float is immersed more than it should be.

The density of the liquid is higher than the value given in the customer order data. The float is not sufficiently immersed.

The density of the liquid is higher than the value given in the customer order data. The float is immersed more than it should be.

Make sure the measuring chamber has not been completely drained. Make sure the true density of the liquid corresponds to the value given in the order data. Contact your local sales office to make sure that the float is for the correct density range. If the float is damaged or corroded, it is necessary to replace the float. Order a new float from your local sales office. Isolate the measuring chamber and drain the liquid. Remove the bottom plate flange and the float. If your device is a basic version, you will only be able to remove the float if it has the 1¼ NPT connection at the bottom of the measuring chamber

Make sure that the density of the liquid is stable. Contact your local sales office for advice.

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BM 26 BASIC/ADVANCED

Error Description Corrective action

Analog transmitter

Optional LCD indicator status: OLCurrent output is more than 22 mA

Optional LCD indicator status:

-OL

The level of the liquid is at or above the maximum level, but the analog transmitter output doe not indicate that level has reached its maximum limit yet.

The analog transmitter output indicates that the liquid is at or below the minimum level, but the level of the liquid is still above the minimum limit.

The level of the liquid is below the maximum level, but the analog transmitter output indicates that level has already reached its maximum limit.

The analog transmitter output is not yet at the minimum level, but the level of the liquid is at or below the minimum limit.

(more than 20 mA, if this option is selected in the indicator). Overfill. The level of the liquid is above the maximum limit (if the indicator is configured for level indication).

Current output is more than 22 mA (more than 20 mA, if this option is selected in the indicator). The analog transmitter has been moved. A value more than 20 mA no longer represents the maximum limit.

Current output is more than 22 mA (more than 20 mA, if this option is selected in the indicator). The analog transmitter is defective. A value more than 20 mA no longer represents the maximum limit.

Current output is less than 3.6 mA (less than 4 mA, if this option is selected in the indicator). The level of the liquid is below the minimum limit (if the indicator is configured for level indication).

Current output is less than 3.6 mA (less than 4 mA, if this option is selected in the indicator). The analog transmitter has been moved. A value less than 4 mA no longer represents the minimum limit.

Current output is less than 3.6 mA (less than 4 mA, if this option is selected in the indicator). The analog transmitter is defective. A value less than 4 mA no longer represents the minimum limit.

The density of the liquid is lower than the value given in the customer order data. The float is too low in the liquid.

The density of the liquid is higher than the value given in the customer order data. The float is too high in the liquid.

OPERATION 6

Lower the level of liquid below the maximum limit.

Contact your local sales office for advice.

Increase the level of liquid until it is above the minimum limit.

Contact your local sales office for advice.

Make sure that the density of the liquid is stable. Contact your local sales office for advice.

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6 OPERATION

Limit switch

The limit switch is in highhigh (maximum) position and set to HIGH limit

HIGH limit. Status

HIGH limitHIGH limit

OPEN

OPEN.

OPENOPEN

The limit switch is in low-low (minimum) position and set to LOW limit

LOW limit. Status OPEN

LOW limitLOW limit

The limit switch is in the float failure position and set to LOW limit

LOW limit. Status OPEN

LOW limitLOW limit

The level switch does not detect the minimum limit correctly.

The level switch does not detect the maximum limit correctly.

BM 26 BASIC/ADVANCED

Error Description Corrective action

OPEN.

OPENOPEN

OPEN.

OPENOPEN

Overfill? The level of the liquid is at or above the maximum limit (if the indicator is configured for level indication).

Tank empty? The level of the liquid is at or below the minimum limit (if the indicator is configured for level indication).

Float failure. The float has sunk to the bottom of the measuring chamber.

The limit switch (set to LOW limit is open (off), but the level of the liquid is still above the minimum limit. The density of the liquid is lower than the value given in the customer order data.

The limit switch (set to LOW limit is not yet open (off), but the level of the liquid is at or below the minimum limit. The density of the liquid is higher than the value given in the customer order data.

The level of the liquid is at or above the maximum level, but the limit switch (set to HIGH limit open (off). The density of the liquid is lower than the value given in the customer order data.

The level of the liquid is below the maximum level, but the limit switch (set to HIGH limit (off). The density of the liquid is higher than the value given in the customer order data.

HIGH limit) is not yet

HIGH limitHIGH limit

HIGH limit) is open

HIGH limitHIGH limit

LOW limit)

LOW limitLOW limit

LOW limit)

LOW limitLOW limit

Lower the level of liquid below the maximum limit.

Increase the level of liquid until it is above the minimum limit.

It is necessary to replace the float. Order a new float from your local sales office. Isolate the measuring chamber and drain the liquid. Remove the bottom plate flange and the float. If your device is a basic version, you will only be able to remove the float if it has the 1¼ NPT connection at the bottom of the measuring chamber.

Make sure that the density of the liquid is stable. Recalculate the liquid density and repeat the installation procedure for the limit switch.

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BM 26 BASIC/ADVANCED

7.1 Periodic maintenance

This device does not normally need maintenance. If the liquid is contaminated or build-up of deposits is possible, we recommend that you flush the device regularly.

WARNING!

Pressure Equipment Directive 97/23/EC data

Pressure Equipment Directive 97/23/EC dataPressure Equipment Directive 97/23/EC data The device must be regularly serviced to conform to the rules and regulations applicable to the site that it is installed on.

WARNING!

Follow accident prevention regulations carefully when working with pressurized tanks and dangerous chemical products.

How to flush the device

• Open the drain plug or drain valve.

• Flush the chamber.

WARNING!

If you remove the float, close the shut-off valves.

SERVICE 7

Float removal procedure (not for basic version without 1¼¨ plug)

• Close the shut-off valves.

• Remove the bottom process connection counter-flange or plug.

• Remove and clean the float.

7.2 Keep the device clean

DANGER!

If you rub the anti-freeze cover option with a dry cloth, there is a risk of electrostatic discharge. Clean the anti-freeze cover option only with a damp cloth.

7.3 How to replace device components

7.3.1 Service warranty

Maintenance is not necessary for most applications.

Servicing by the customer is limited by warranty to

• The removal and installation of switches. For more data, refer to Optional limit switch

page 23.

• The removal and installation of the float. For more data, refer to Remove all packing before

installation

installation on page 16.

installationinstallation

Optional limit switch on

Optional limit switchOptional limit switch

Remove all packing before

Remove all packing before Remove all packing before

The indicator column and switches can be removed under process conditions.

Use only KROHNE-authorized service staff to repair the device.

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7 SERVICE

7.4 Availability of services

The manufacturer offers a range of services to support the customer after expiration of the warranty. These include repair, maintenance, technical support and training.

INFORMATION!

For more precise information, please contact your local sales office.

7.4.1 General notes

We supply spare parts and accessories for this device. When you order a spare part or accessory, please give the reference numbers that follow:

7.4.2 List of spare parts

For the measuring chamber:

• Floats

BM 26 BASIC/ADVANCED

Float designation Product density Part number

[kg/l] [lb/ft³]

Basic version

Float 1 0.8...1.19 49.9...74.3 F3187980500

Advanced version

Float 1 0.58...0.7 36.2...43.7 F3187981900

Float 2 0.7...0.99 43.7...61.8 F3187981600

Float 3 0.99...2 61.8...124.8 F3187980900

For the analog transmitter:

• Transmitter modules. For more data, refer to

Order code

on page 84.

INFORMATION!

Supply this data when you order spare parts:

•

Device serial number

•

Manufacturer's order number

•

Floats only: Float material (on the float data sticker at the bottom of the indicator column)

•

Floats only: Maximum allowable pressure, Ps and test pressure, Pt (on the float data sticker)

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BM 26 BASIC/ADVANCED

7.4.3 List of accessories

For the measuring chamber:

• Limit switch, non-NAMUR

• Limit switch, NAMUR

INFORMATION!

For more data on the limit switches, refer to Technical data: optional limit switches on page 56

For the 2-wire, loop-powered analog transmitter:

• AS 24 power supply unit 24 VDC / 230 VAC

• AS 24 power supply unit 24 VDC / 110 VAC

• PROF SI 24075 intrinsically-safe power supply unit (with galvanic separation)

• C 95 Basic univeral power supply (Panel mount, 2 relays, 4-digit local indicator and non-Ex)

• C 95 Basic univeral power supply (Panel mount, 2 relays, 4…20 mA output, 4-digit local

indicator and non-Ex)

SERVICE 7

INFORMATION!

For more data on the C 95 power supply, refer to the technical datasheet in our download centre.

7.5 Availability of services

The manufacturer offers a range of services to support the customer after expiration of the warranty. These include repair, maintenance, technical support and training.

INFORMATION!

For more precise information, please contact your local sales office.

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7 SERVICE

7.6 Returning the device to the manufacturer

7.6.1 General information

This device has been carefully manufactured and tested. If installed and operated in accordance with these operating instructions, it will rarely present any problems.

CAUTION!

Should you nevertheless need to return a device for inspection or repair, please pay strict attention to the following points:

•

Due to statutory regulations on environmental protection and safeguarding the health and safety of our personnel, manufacturer may only handle, test and repair returned devices that have been in contact with products without risk to personnel and environment.

•

This means that the manufacturer can only service this device if it is accompanied by the following certificate (see next section) confirming that the device is safe to handle.

CAUTION!

If the device has been operated with toxic, caustic, flammable or water-endangering products, you are kindly requested:

•

to check and ensure, if necessary by rinsing or neutralising, that all cavities are free from such dangerous substances,

•

to enclose a certificate with the device confirming that is safe to handle and stating the product used.

BM 26 BASIC/ADVANCED

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BM 26 BASIC/ADVANCED

7.6.2 Form (for copying) to accompany a returned device

Company: Address:

Department: Name:

Tel. No.: Fax No.:

The meter enclosed, type:

Manufacturer's Order or Serial No.:

SERVICE 7

has been operated with the following liquid:

Because this liquid is: hazardous to water

toxic

caustic

flammable

We have checked that all cavities in the unit are free from such substances.

We have flushed out and neutralized all cavities in the unit.

We herewith confirm that in returning this unit there is no risk to man or environment through any residual liquid contained in it.

Date: Company stamp:

Signature:

7.7 Disposal

CAUTION!

Disposal must be carried out in accordance with legislation applicable in your country.

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8 TECHNICAL DATA

8.1 Measuring principle

The device operates on the principle of communicating tubes. The measuring chamber is connected adjacent to the tank. The process conditions in the measuring chamber are the same as those of the tank.

A float is in the measuring chamber. The float contains magnets that rotate the flaps in the indicator column and operate the optional limit switches and analog transmitter on the side of the measuring chamber. The position of the magnets does not correspond to the level of liquid so the scale is offset at the factory to take into account this difference. The offset of the magnets depends on the liquid density. Refer to the illustration that follows:

Magnet offset

BM 26 BASIC/ADVANCED

Figure 8-1: Magnet offset

1 True level of the liquid 2 Top of the float magnet (which corresponds to the level shown on the indicator column) 3 Difference (offset) between the true level of the liquid and the top of the float magnet (depends on the liquid density) 4 Indicator column of yellow/black rotating flaps (with the optional scale)

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BM 26 BASIC/ADVANCED

8.2 Technical data: general information

INFORMATION!

•

The following data is provided for general applications. If you require data that is more relevant to your specific application, please contact us or your local sales office.

•

Additional information (certificates, special tools, software,...) and complete product documentation can be downloaded free of charge from the website (Download Center).

Measuring system

Measuring principle Bypass level indicator (principle of communicating tubes). A float in

Application range Level indication of liquids for

Measured value

Measured valueMeasured value

Primary measured value Level of the float magnets in the measuring chamber

Secondary measured value Level and volume of the liquid in the measuring chamber

the measuring chamber (Ø42 mm / 1.7¨) is magnetically-coupled to a mechanical level indicator.

low-pressure applications and in storage tanks

TECHNICAL DATA 8

Basic Advanced

Level indication of liquids in applications up to 40 barg / 580 psig

Design

Options and variants

Options and variantsOptions and variants

Variants Lateral / lateral process connections

Axial / axial process connections

Top lateral / bottom axial process connections

Top axial / bottom lateral process connections

Options Support bracket (a wall support for long bypass level indicators)

Analog transmitter without display (converter with 4...20 mA,

4...20 mA + HART®, PROFIBUS PA or FF output module mounted at the top or bottom of the reed chain) 1

Analog transmitter with display (4...20 mA or 4...20 mA + HART® converter mounted at the top or bottom of the reed chain)

1¼¨ threaded cover (for installation/ removal of the float)

Anti-freeze cover for glass indicator tube (when the ambient temperature is -40...-20°C / -40...-4°F)

- OPTIFLEX 1300 C with Ø2 mm

- OPTIFLEX 1300 C (if DN40 PN40

- OPTIWAVE 7300 C (if welded

Accessories Bistable limit switches (NAMUR or non-NAMUR) Measuring range (ML) 0.3…5.3 m / 1…17.4 ft 0.3…5.3 m / 1…17.4 ft

single cable probe (if ½ BSPP top axial connection is selected)

top axial connection is selected )

antenna or DN40 PN40 top axial connection is selected)

(longer on request)

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8 TECHNICAL DATA

Display and user interface

Display and user interfaceDisplay and user interface

Display Indicator column with magnetically-coupled yellow/black rotating

Float failure indication Red/black rotating flaps at the bottom of the indicator column

Scale marking options No scale; m + cm; ft + inches; %

Measuring accuracy

Accuracy ±10 mm / 0.4¨ Repeatability ±10 mm / 0.4¨ (when density is constant)

Maximum rate of change 2 m/minute / 6.5 ft/minute

Operating conditions

Temperature

TemperatureTemperature Process -40…+150°C/ -40…+300°F

Ambient temperature -40…+80°C/ -40…+176°F (Ex: see supplementary instructions or

Storage temperature -50…+80°C/ -58…+176°F

Pressure

PressurePressure

Max. allowable operating pressure

Chemical properties

Chemical propertiesChemical properties Density 0.8…1.19 kg/l / 49.9...68.7 lb/ft³ 0.58…2 kg/l / 36.2...124.8 lb/ft³ Viscosity ≤ 5000 mPas / ≤ 3.360 lb/ft³

Other conditions

Other conditionsOther conditions

Ingress protection IP 68

Basic Advanced

flaps; no indicator column

(Ex: see supplementary instructions or approval certificates)

approval certificates)

16 barg / 232 psig (according to the length of the measuring chamber. Also refer to

Guidelines for maximum operating pressure

on page 76.)

BM 26 BASIC/ADVANCED

-40...+300°C/ -40…+570°F (Ex: see supplementary instructions or approval certificates)

40 barg / 580 psig (according to the flange pressure rating. Also refer to

operating pressure

Guidelines for maximum

on page 76.)

Installation conditions

Recommendations Mount vertically on the side of tanks

Fit isolation valves on process connections to permit maintenance of the bypass chamber (optional)

Dimensions and weights Refer to "Technical data: Dimensions and weights"

Materials

Chamber Standard: Stainless steel (1.4404 / 316L)

- Option: Hastelloy® C-276 2

Float Standard: Stainless steel

(1.4404 / 316L)

- Option: Hastelloy®

Indicator rail Stainless steel Indicator tube Pyrex® glass (glass tube with a true hermetic seal) 3

Scale (option) Stainless steel

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Stainless steel (1.4404 / 316L); Titanium (for data on material selection, refer to

78)

Floats

on page

BM 26 BASIC/ADVANCED

Process fitting Standard: Stainless steel (1.4404 / 316L)

Gaskets Teflon® tape 4 Standard: Aramid; Teflon® tape

Braid insulation - Ceramic fibre (insulation

Anti-freeze cover for glass indicator tube (option)

Process connections

Threaded pipes ½...¾ NPT; G ½...¾ Smooth pipes, 10S ½¨; ¾¨ in 10S

Flange version

Flange versionFlange version EN DN15…40 (Form B1) in PN16 / 40 DN15…50 (Form B1, C or E) in

ASME ½…1½¨ (RF) in 150 lb / 300 lb ½…1½¨ (RF) in 150 lb / 300 lb;

TECHNICAL DATA 8

Basic Advanced

- Option: Hastelloy® C-276 (for the

wetted parts of EN loose flanges only)

- Options: Graphite; PTFE

between the indicator column and the measuring chamber when the process temperature is +100...+300°C / +210...+570°F)

Plexiglas®

PN16 / 40; DN15…50 (Form B1, C or E) in PN63 / 100; others are available on request Note: Hastelloy® C-276 flange connections are only available as loose flanges with form B1

others are available on request

Drain and vent connections

Drain options

Drain optionsDrain options

Thread Standard: cover with 3/8 NPT

Flange - Options: all process connection

Vent options

Vent optionsVent options

Thread Standard: without (convex cap) Standard: 3/8 NPT plug

Flange - Options: all process connection

plug Option: cover with 1¼ NPT plug Options: on page 66

Option: cover with 3/8 NPT plug Options: flange with ½ NPT plug;

Standard: flange with ½ NPT plug

options

flange with G ½ plug; DN40 top flange (for radar or TDR level transmitter) with ½ NPT lateral vent plug; welded antenna with ½ NPT lateral vent plug; ½ BSPP screw connection for OPTIFLEX 1300 C and Ø2 mm single cable probe, with ½ NPT lateral vent plug; all process connection options

options

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8 TECHNICAL DATA

Power supply

Limit switches Refer to "Technical data: optional level switches"

Analog transmitter Refer to "Technical data: optional analog transmitter"

Input and output

Parameter Level detection or indication

Output signal Refer to "Technical data: optional level switches" and "Technical

Approvals and certification

CE CE marking not applicable (not

Explosion protection

Explosion protectionExplosion protection

ATEX II 1 G or II 1/2 G (measuring chamber)

Other standards and approvals

Other standards and approvalsOther standards and approvals

PED Not subject to PED test

Vibration resistance Vibration class 4M4 according to EN 60721-3-4 Construction code Standard: "CODAP® 2010"

1 HART® is a registered trademark of the HART Communication Foundation 2 Hastelloy® is a registered trademark of Haynes International, Inc. 3 Pyrex® is a registered trademark of Corning, Inc. 4 Teflon® is a registered trademark of E.I. du Pont de Nemours and Company

BM 26 BASIC/ADVANCED

Basic Advanced

data: optional analog transmitter"

subject to PED test requirements)

Refer also to approvals in "Technical data: optional level switches" and "Technical data: optional analog transmitter"

requirements

Option: NACE MR0175 / ISO 15156

On request: EN 13445

This device fulfils the statutory requirements of the EC directives. The manufacturer certifies successful testing of the product by applying the CE mark.

Pressure Equipment Directive 97/23/EC in conjunction with CODAP® 2010

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BM 26 BASIC/ADVANCED

8.3 Technical data: optional analog transmitter

Analog output or HART® communication modules

Module output 4...20 mA 4...20 mA / HART®

TECHNICAL DATA 8

Order code xF45xBxxxxx

(without LCD indicator)

xF45xExxxxx

(with LCD indicator)

xF45xWxxxxx

(without LCD indicator)

xF45xGxxxxx

(with LCD indicator)

Measuring system

Measuring principle A reed resistor chain that is magnetically actuated by a magnetic

Primary measured value Resistance

Secondary measured value Level and volume of the liquid in the measuring chamber

float in the BM 26 measuring chamber

Design

Description of device Resistance reed chain with 2-wire loop-powered transmitter module

Description of transmitter module

Options Converter position - The customer must specify the position of the

Accessories SU 600 power supply unit 24 V

Display and user interface

Display and user interfaceDisplay and user interface

Display Standard: none

Functions Display of level in mm; inches; %

Display 2-wire loop-powered indicator

Operation Selectable number of decimals,

attached adjacent to the measuring chamber of the bypass level indicator. Changes in resistance are converted to an output signal via a transmitter module.

Changes in resistance are converted to analog current signals.

converter at the top or the bottom of the analog transmitter

LCD indicator

SU 600 power supply unit 24 V with integrated Ex ia barrier

PROF SI 24075 intrinsically-safe power supply unit (with galvanic separation)

C 95 Basic universal power supply (Panel mount, 2 relays, 4-digit local indicator and non-Ex)

C 95 Basic universal power supply (Panel mount, 2 relays, 4…20 mA output, 4-digit local indicator and non-Ex)

Option: 2-wire loop-powered LCD indicator

(stickers for optional units of measure are supplied with the device). 4-digit LCD with minus sign, 3-button keypad.

4-digit LCD with minus sign, 3-button keypad

0 to 3. Open the housing to configure the device.

Changes in resistance are converted to analog or digital current signals. Up to 15 transmitters can be connected to a network that agrees with the HART® communication protocol.

Option: 2-wire loop-powered LCD indicator

Display of level in mm; inches; % (stickers for optional units of measure are supplied with the device). 4-digit LCD with minus sign, 3-button keypad.

2-wire loop-powered indicator 4-digit LCD with minus sign, 3-button keypad

Selectable number of decimals, 0 to 3. Open the housing to configure the device.

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8 TECHNICAL DATA

Module output 4...20 mA 4...20 mA / HART®

BM 26 BASIC/ADVANCED

Order code xF45xBxxxxx

(without LCD indicator)

xF45xExxxxx

(with LCD indicator)

xF45xWxxxxx

(without LCD indicator)

xF45xGxxxxx

(with LCD indicator)

Measuring accuracy

Accuracy ±10 mm / 0.4¨ (when density is

constant)

≤ ±0.1% of span Temperature coefficient ≤ ±0.01% of span/°C ≤ ±0.005% of span/°C EMC immunity influence < ±0.1% of span < ±0.1% of span

±10 mm / 0.4¨ (when density is constant) ≤ ±0.05% of span

Operating conditions

Temperature

TemperatureTemperature

Operating temperature, transmitter module

Operating temperature, LCD indicator

Pressure

PressurePressure

Operating pressure Atmospheric pressure

Other conditions

Other conditionsOther conditions

Warm-up time 5...10 minutes 30 s

Response time 1.5 s 1....60 s 2

Protection category Transmitter housing without LCD indicator: IP 54

-40…+85°C/ -40…+185°F, if there is insulation around the

measuring chamber, specify the temperature in the order. Do not put

insulation around the transmitter housing.

-20…+70°C/ -4…+158°F 1

Transmitter housing with LCD indicator: IP 66

Installation conditions

Notes The analog transmitter is calibrated at the factory and attached to the

Dimensions and weight Refer to the "Technical data: Dimensions and weights" section

measuring chamber before delivery

Materials

Housing Polyester-coated aluminium

Reed-chain tube Stainless steel

Clamp Stainless steel

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BM 26 BASIC/ADVANCED

Module output 4...20 mA 4...20 mA / HART®

TECHNICAL DATA 8

Order code xF45xBxxxxx

(without LCD indicator)

xF45xExxxxx

(with LCD indicator)

xF45xWxxxxx

(without LCD indicator)

xF45xGxxxxx

(with LCD indicator)

Electrical connections

Power supply

Power supplyPower supply

Voltage Non-Ex:

LCD indicator; voltage drop 2.5 V 2.5 V

Cable entry M20 × 1.5

Intrinsically-safe circuit data for Ex ia-approved devices

Non-Ex:

Non-Ex:Non-Ex:

12…35 VDC 8…30 VDC

Ex ia, without LCD indicator:

Ex ia, without LCD indicator:Ex ia, without LCD indicator:

Refer to supplementary instructions or approval certificates

Ex ia, with LCD indicator:

Ex ia, with LCD indicator:Ex ia, with LCD indicator:

Refer to supplementary

instructions or approval

certificates

Refer to supplementary instructions or approval certificates

Input and output

Current output

Current outputCurrent output Output range 4…20 mA

Error signal Upper value, selectable

21.6 mA 23 mA

Lower value, selectable

3.5 mA

HART

HART®

HARTHART Description - HART® protocol via passive

Multidrop operation - Yes, current output = 4 mA

current output

Multidrop address (1...15) adjustable

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8 TECHNICAL DATA

Module output 4...20 mA 4...20 mA / HART®

BM 26 BASIC/ADVANCED

Order code xF45xBxxxxx

(without LCD indicator)

xF45xExxxxx

(with LCD indicator)

xF45xWxxxxx

(without LCD indicator)

xF45xGxxxxx

(with LCD indicator)

Approvals and certifications

CE This device fulfils the statutory requirements of the EC directives.

Explosion protection

Explosion protectionExplosion protection

ATEX - without LCD indicator II 1 G Ex ia IIC T4...T6 II 1 G Ex ia IIC T4 or T6

ATEX - with LCD indicator II 1 G Ex ia IIC T5 -

Other standards and approvals

Other standards and approvalsOther standards and approvals

EMC Electromagnetic Compatibility

Vibration resistance Vibration class 4M4 according to EN 60721-3-4

NAMUR NAMUR NE 43 4

1 If the operating temperature is not in these limits, the display switches off. The transmitter module continues to oper-

ate above and below this temperature range.

2 This value is programmable 3 Electromagnetic Compatibility of Industrial and Laboratory Control Equipment 4 Standardization of the Signal Level for the Failure Information of Digital Transmitters

The manufacturer certifies successful testing of the product by

applying the CE mark.

Directive 2004/108/EC in

conjunction with EN 61326-1

(2006)

Electromagnetic Compatibility Directive 2004/108/EC in conjunction with EN 61326-1 (2006) NAMUR NE 21

Fieldbus modules

Module output FOUNDATION™ Fieldbus PROFIBUS PA

Order code xF45xDxxxxx (PR) xF45xXxxxxx (PR)

Measuring system

Measuring principle A reed resistor chain that is magnetically actuated by a magnetic

Primary measured value Resistance

Secondary measured value Level and volume of the liquid in the measuring chamber

float in the BM 26 measuring chamber

Design

Description of device Resistance reed chain with 2-wire loop-powered transmitter module

Description of transmitter module

Options Converter position 1

Accessories SU 600 power supply unit 24 V

attached adjacent to the measuring chamber of the bypass level

indicator. Changes in resistance are converted to an output signal via

a transmitter module.

Changes in resistance are

converted to signals that agree

with the FF communication

protocol.

Changes in resistance are converted to signals that agree with the PROFIBUS PA communication protocol.

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BM 26 BASIC/ADVANCED

Module output FOUNDATION™ Fieldbus PROFIBUS PA

Order code xF45xDxxxxx (PR) xF45xXxxxxx (PR)

Display and user interface

Display and user interfaceDisplay and user interface

Display None

Measuring accuracy

Accuracy ±10 mm / 0.4¨ (when density is constant)

Operating conditions

Temperature

TemperatureTemperature

Operating temperature, transmitter module

Pressure

PressurePressure

Operating pressure Atmospheric pressure

Other conditions

Other conditionsOther conditions

Protection category Transmitter housing without LCD indicator: IP 54

TECHNICAL DATA 8

-40…+85°C / -40…+185°F, if there is insulation around the

measuring chamber, specify the temperature in the order. Do not put

insulation around the transmitter housing.

Transmitter housing with LCD indicator: IP 66

Installation conditions

Notes The analog transmitter is calibrated at the factory and attached to the

Dimensions and weight Refer to the "Technical data: Dimensions and weights" section

measuring chamber before delivery

Materials

Housing Polyester-coated aluminium

Reed-chain tube Stainless steel

Clamp Stainless steel

Electrical connections

Power supply

Power supplyPower supply

Voltage Non-Ex:

Cable entry M20 × 1.5

Intrinsically-safe circuit data for Ex ia-approved devices

PROFIBUS PA

PROFIBUS PAPROFIBUS PA

Description - PROFIBUS PA protocol Profile

FOUNDATION Fieldbus

FOUNDATION FieldbusFOUNDATION Fieldbus

Description FOUNDATION Fieldbus protocol -

Non-Ex:

Non-Ex:Non-Ex:

9...32 VDC

Ex ia:

Ex ia:Ex ia:

Refer to supplementary instructions or approval certificates

A&B, ver.3.0 (EN 50170 vol.2)

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8 TECHNICAL DATA

Module output FOUNDATION™ Fieldbus PROFIBUS PA

Order code xF45xDxxxxx (PR) xF45xXxxxxx (PR)

Approvals and certification

CE This device fufills the statutory requirements of the EC directives.

Explosion protection

Explosion protectionExplosion protection

ATEX II 1 G Ex ia IIC T4...T6 2 II 1 G Ex ia IIC T4...T6 2

Other standards and approvals

Other standards and approvalsOther standards and approvals

EMC Electromagnetic Compatibility Directive 2004/108/EC in conjunction

Vibration resistance Vibration class 4M4 according to EN 60721-3-4

1 The customer must specify the position of the converter at the top or the bottom of the analog transmitter 2 Conventional or FISCO systems intrinsically-safe systems 3 FISCO systems intrinsically-safe systems

BM 26 BASIC/ADVANCED

The manufacturer certifies successful testing of the product by

applying the CE mark.

II 2 G Ex ib IIC T4...T6 3 II 2 G Ex ib IIC T4...T6 3

with EN 61326-1 (2006)

8.4 Technical data: optional limit switches

Version Non-NAMUR NAMUR

Measuring system

Measuring principle A bistable reed switch that is magnetically actuated by the float in the

Application range Level detection

Design

Description of device Limit switch attached adjacent to the measuring chamber of the

Measuring accuracy

Hysteresis 28 mm / 1.1¨. For more data, refer to the "Optional limit switch"

Operating conditions

Temperature

TemperatureTemperature Operating temperature -40…+120°C/ -40…+250°F, if there is insulation around the

Storage -40…+120°C/ -40…+250°F

Pressure

PressurePressure

Operating pressure Atmospheric pressure

Other conditions

Other conditionsOther conditions

Protection category IP 66

measuring chamber of the bypass level indicator.

bypass level indicator.

section.

measuring chamber, specify the temperature in the order. Do not put

insulation around the switch housing.

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BM 26 BASIC/ADVANCED

Version Non-NAMUR NAMUR

Installation conditions

Notes The switch is not attached to the measuring chamber before delivery

Dimensions and weights Refer to "Technical data: Dimensions and weights"

Materials

Switch housing Aluminium with epoxy powder paint

Bracket Stainless steel

Clamp Stainless steel

Electrical connections

Cable entry M16 × 1.5

Control input

Control inputControl input

Switching capacity 60 VA/W; 1 A; 250 VAC/VDC According to NAMUR 19234

Intrinsically-safe circuit data Refer to supplementary instructions or approval certificates.

TECHNICAL DATA 8

Adjust the switch position for hysteresis and liquid density

Approvals and certifications

CE This device fulfils the statutory requirements of the EC directives.

Explosion protection

Explosion protectionExplosion protection

ATEX II 1 G Ex ia IIC T6...T4

Other standards and approvals

Other standards and approvalsOther standards and approvals

LVD Low-Voltage Directive

Vibration resistance Vibration class 4M5 according to EN 60721-3-4

The manufacturer certifies successful testing of the product by

applying the CE mark.

2006/95/EC in conjunction with EN 61010-1 (2001)

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8 TECHNICAL DATA

8.5 Basic version: Dimensions and weights

Basic version: Lateral / Lateral process connections

BM 26 BASIC/ADVANCED

Figure 8-2: Lateral / Lateral process connections

1 Optional vent with 3/8 NPT connection (with plug). Optional drain with 3/8 NPT - or a 1¼ NPT plug for removal of the

float from the bottom of the device

2 Welded cap 3 Optional limit switch 4 Flange connection 5 Optional long stud (½¨ or ¾¨) connection 6 Optional male thread (½... ¾ NPT or G ½...¾) connection 7 Level indicator with optional scale 8 Level indicator without optional scale

Note:

Note: Note:

• C-C = Centre-to-centre length (process connections)

• ML = Measuring length

• L = Overall length

• a = Distance from the axis of the bottom connection to the bottom of the device;

b = Distance from the axis of the top connection to the top of the device

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BM 26 BASIC/ADVANCED

TECHNICAL DATA 8

Dimensions in mm

Dimensions [mm]

a b C-C ML c d k L p q Øt

Lateral / Lateral process connections

1 Optional drain with 1¼¨ plug: 323 mm 2 Welded cap option: 149 mm 3 This is equal to the dimension ML 4 Long stud option: 130 mm. Male thread connection option: 58 mm. 5 Welded cap option: (C-C) +459 mm. 1¼¨ plug option: (C-C) +500 mm. Welded cap + 1¼¨ plug options: (C-C) +476 mm.

310 1 173 2

300…

135 4 55.5 74 (C-C)

5300

+483

32 113 42.4

Dimensions in inches

Dimensions [inches]

a b C-C ML c d k L p q Øt

Lateral / Lateral process connections

1 Optional drain with 1¼¨ plug: 12.7¨ 2 Welded cap option: 5.9¨ 3 This is equal to the dimension ML 4 Long stud option: 5.1¨. Male thread connection option: 2.3¨. 5 Welded cap option: (C-C) +18.1¨. 1¼¨ plug option: (C-C) +19.7¨. Welded cap + 1¼¨ plug options: (C-C) +18.7¨.

12.2 1 6.8 2

12…

5.3 4 2.2 2.9 (C-C)

208

+19

1.3 4.4 1.7

Weights in kg and lb

Weights Weights for every

additional 100 mm

[kg] [lb] [kg] [lb]

Min.: DN15 PN40 flanges 7.4 1 16.3 2 0.3 0.7 Max.: 1½¨ 300 lb flanges 11.2 1 24.7 2 0.3 0.7

Limit switch 0.085 0.2

1 When L=500 mm 2 When L=20¨

Weights for every

additional 4 inches

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8 TECHNICAL DATA

Basic version: Axial / Axial process connections

BM 26 BASIC/ADVANCED

Figure 8-3: Axial / Axial process connections

1 3/8 NPT threaded connection 2 Optional support bracket - also refer to "Support bracket option: Dimensions and weight" 3 Optional limit switch 4 Level indicator with optional scale

Note:

Note: Note:

• C-C = Face-to-face length (process connections)

• ML = Measuring length

• L = Overall length

• a = bottom dead zone; b = top dead zone

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BM 26 BASIC/ADVANCED

Dimensions in mm

TECHNICAL DATA 8

Dimensions [mm]

a b C-C ML d k L p q Øt

Axial / Axial process connections

274 96 ML

+370

272…

5300

55.5 74 (C-C) +21

32 113 42.4

Dimensions in inches

Dimensions [inches]

a b C-C ML d k L p q Øt

Axial / Axial process connections

10.8 3.8 ML +14.6

10.8…

208

2.5 2.9 (C-C) +0.8

1.3 4.4 1.7

Weights in kg and lb

Weights Weight for every

additional 100 mm

[kg] [lb] [kg] [lb]

3/8 NPT 6.0 1 13.2 2 0.3 0.7

Limit switch 0.085 0.2

1 When L=500 mm 2 When L=20¨

Weight for every

additional 4 inches

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8 TECHNICAL DATA

Basic version: Top lateral / Bottom axial process connections

BM 26 BASIC/ADVANCED

Figure 8-4: Top lateral / Bottom axial process connections

1 3/8 NPT threaded connection 2 Optional drain or vent with 3/8 NPT connection (with plug) 3 Welded cap 4 Flange connection 5 Optional long stud (½¨ or ¾¨) connection 6 Optional male thread (½... ¾ NPT or G ½...¾) connection 7 Optional limit switch 8 Level indicator with optional scale 9 Optional support bracket - also refer to "Support bracket option: Dimensions and weight"

Note:

• C-C = Centre-to-face length (process connections)

• ML = Measuring length

• L = Overall length

• a = bottom dead zone; b = Distance from the axis of the top connection to the top of the device

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BM 26 BASIC/ADVANCED

Dimensions in mm

TECHNICAL DATA 8

Dimensions [mm]

a b C-C ML c d k L p q Øt

Top lateral / Bottom axial process connections

1 Welded cap option: 149 mm 2 Long stud option: 130 mm. Male thread connection option: 58 mm. 3 Welded cap option: (C-C) +170 mm

300 173 1 ML

+300

370…

5300

135 2 55.5 74 (C-C)

+194

32 113 42.4

Dimensions in inches

Dimensions [inches]

a b C-C ML c d k L p q Øt

Top lateral / Bottom axial process connections

1 Welded cap option: 5.9¨ 2 Long stud option: 5.1¨. Male thread connection option: 2.3¨. 3 Welded cap option: (C-C) +6.7¨

11.8 6.8 1 ML +11.8

14.6…

208

5.3 2 2.2 2.9 (C-C) +7.6

1.3 4.4 1.7

Weights in kg and lb

Weights Weights for every

additional 100 mm

[kg] [lb] [kg] [lb]

Min.: 3/8 NPT / DN15 PN40 flange 6.7 1 14.8 2 0.3 0.7 Max.: 3/8 NPT / 1½¨ 300 lb flange 8.6 1 19.0 2 0.3 0.7

Limit switch 0.085 0.2

1 When L=500 mm 2 When L=20¨

Weights for every

additional 4 inches

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8 TECHNICAL DATA

Basic version: Top axial / Bottom lateral process connections

BM 26 BASIC/ADVANCED

Figure 8-5: Top axial / Bottom lateral process connections

1 Optional drain with 3/8 NPT or 1¼ NPT connection (with plug - 1¼ NPT connection is for removal of the float from the

bottom of the device)

2 3/8 NPT threaded connection 3 Flange connection 4 Optional long stud (½¨ or ¾¨) connection 5 Optional male thread (½... ¾ NPT or G ½...¾) connection 6 Optional limit switch 7 Level indicator with optional scale 8 Optional support bracket - also refer to "Support bracket option: Dimensions and weight"

Note:

• C-C = Face-to-centre length (process connections)

• ML = Measuring length

• L = Overall length

• a = Distance from the axis of the bottom connection to the bottom of the device;

b = top dead zone

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BM 26 BASIC/ADVANCED

Dimensions in mm

TECHNICAL DATA 8

Dimensions [mm]

a b C-C ML c d k L p q Øt

Top axial / Bottom lateral process connections

1 Optional drain with 1¼¨ plug: 323 mm 2 Long stud option: 130.2 mm. Male thread connection option: 58.2 mm. 3 1¼¨ plug option: (C-C) +327 mm

310 1 140 ML

+140

288…

5300

135.2255.5 74 (C-C) +310

32 113 42.4

Dimensions in inches

Dimensions [inches]

a b C-C ML c d k L p q Øt

Top axial / Bottom lateral process connections

1 Optional drain with 1¼¨ plug: 12.7¨ 2 Long stud option: 5.1¨. Male thread connection option: 2.3¨. 3 1¼¨ plug option: (C-C) +12.9¨

12.2 1 5.5 ML +5.5

11.3…

208

5.3

2.2 2.9 (C-C) +12.2

1.3 4.4 1.7

Weights in kg and lb

Weights Weights for every

additional 100 mm

[kg] [lb] [kg] [lb]

Min.: 3/8 NPT / DN15 PN40 flange 6.7 1 14.8 2 0.3 0.7 Max.: 3/8 NPT / 1½¨ 300 lb flange 8.6 1 19.0 2 0.3 0.7

Limit switch 0.085 0.2

1 When L=500 mm 2 When L=20¨

Weights for every

additional 4 inches

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8 TECHNICAL DATA

8.6 Advanced version: Dimensions and weights

Advanced version: Lateral / Lateral process connections

BM 26 BASIC/ADVANCED

Figure 8-6: Lateral / Lateral process connections

1 Optional vent with 3/8 NPT connection (with plug) , or optional vent with 1/2 NPT, G 1/2 or G 3/8 connection (with plug)

on a plate flange, or drain with 1/2 NPT, 3/8 NPT, G 1/2 or G 3/8 connection (with plug) on a plate flange

2 Process connection (flange) 3 Welded antenna option for the OPTIWAVE 7300 radar level transmitter with ¼ NPT connection for a flushing system 4 ½ BSP connection for OPTIFLEX 1300 TDR level transmitter with ½ NPT lateral vent (with plug) 5 Optional vent and drain (flange) 6 Optional DN40 top flange for other level transmitters 7 Optional limit switch 8 Level indicator with optional scale 9 Optional male thread (½... ¾ NPT or G ½...¾) or long stud (½¨ or ¾¨) connection

Note:

• C-C = Centre-to-centre length (process connections)

• ML = Measuring length

• L = Overall length

• a = Distance from the axis of the bottom connection to the bottom of the device;

b = Distance from the axis of the top connection to the top of the device

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BM 26 BASIC/ADVANCED

Dimensions in mm

TECHNICAL DATA 8

Liquid density

Dimensions [mm]

[kg/l]

a b C-C ML c d e g k L p q r s Øt

Lateral / Lateral process connections

1 For more data, refer to "Floats" at the end of this chapter 2 Optional 1/2NPT or 3/8NPT drain + plug: 480 mm. Optional G1/2 or G3/8 drain + plug: 472 mm. Optional drain flange: 580 mm. 3 Optional 3/8NPT vent: 228 mm. Optional 1/2NPT vent: 228 mm. Optional G1/2 vent: 220 mm. Optional welded OPTIWAVE 7300 trans-

mitter: 542 mm. Optional OPTIFLEX 1300 transmitter with 2 mm single cable probe: 454 mm. Optional flange vent: 328 mm. Optional DN40 flange: 193 mm.

4 This is equal to the dimension C-C 5 EN flange, type B: 135 mm. EN flange, type C: 135 mm. EN flange, type E: 135 mm. Long stud: 130 mm. Male thread connection: 58 mm. 6 If ambient temperature is -40...-20°C: 85.5 mm (with Plexiglas® cover) 7 Depends on the options selected. Contact your local sales office for more data. 8 Optional 1/2NPT or 3/8NPT drain + plug: 299 mm. Optional G1/2 or G3/8 drain + plug: 291 mm. Optional drain flange: 399 mm. 9 Optional 1/2NPT or 3/8NPT drain + plug: 255 mm. Optional G1/2 or G3/8 drain + plug: 247 mm. Optional drain flange: 355 mm.

0.58…0.7 1

0.7…0.99 1

0.99…2.0 1

2 3 4

8 3 4 5

9 3 4 5

300…

5300

55.5 6 106 15 74

32 113 259 70 42.4

Dimensions in inches

Liquid density

[lb/ft³]

a b C-C ML c d e g k L p q r s Øt

Lateral / Lateral process connections

tional OPTIFLEX 1300 transmitter with 0.08¨ single cable probe: 17.9¨. Optional flange vent: 12.9¨. Optional DN40 flange: 7.6¨.

4 This is equal to the dimension C-C 5 EN flange, type B: 5.3¨. EN flange, type C: 5.1¨. EN flange, type E: 5.3¨. Long stud: 5.1¨. Male thread connection: 2.3¨. 6 If ambient temperature is -40...-4°F: 3.4¨ (with Plexiglas® cover) 7 Depends on the options selected. Contact your local sales office for more data. 8 Optional 1/2NPT or 3/8NPT drain + plug: 11.8¨. Optional G1/2 or G3/8 drain + plug: 11.4¨. Optional drain flange: 15.7¨. 9 Optional 1/2NPT or 3/8NPT drain + plug: 10¨. Optional G1/2 or G3/8 drain + plug: 9.7¨. Optional drain flange: 14.0¨.

36.2…43.7 1

43.7…61.8 1

61.8…124.8 1

2 3 4

8 3 4 5

9 3 4 5

12…

208

Dimensions [inches]

2.2 6 4.2 0.6 2.9

1.3 4.4 10.2 2.8 1.7

Weights in kg and lb

Weights Weights for every

additional 100 mm

[kg] [lb] [kg] [lb]

Min.: DN15 PN40 flanges 7.4…8 1 16.3…17.6 2 0.3 0.7 Max: 1½¨ 600 lb flanges 12.4…13 1 27.3…28.7 2 0.3 0.7

Limit switch 0.085 0.2

1 When L=500 mm - if liquid density is low, then weight is higher 2 When L=20¨ - if liquid density is low, then weight is higher

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Weights for every

additional 4 inches

8 TECHNICAL DATA

Advanced version: Axial / Axial process connections

BM 26 BASIC/ADVANCED

Figure 8-7: Axial / Axial process connections

1 Process connection (flange) 2 Optional limit switch 3 Level indicator with optional scale 4 Optional support bracket - also refer to "Support bracket option: Dimensions and weight"

Note:

• C-C = Face-to-face length (process connections)

• ML = Measuring length

• L = Overall length

• a = bottom dead zone; b = top dead zone

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BM 26 BASIC/ADVANCED

Dimensions in mm

TECHNICAL DATA 8

Liquid density

[kg/l]

a b C-C ML d e k L p q Øt

Axial / Axial process connections

1 For more data, refer to "Floats" at the end of this chapter 2 If ambient temperature is -40...-20°C: 85.5 mm (with Plexiglas® cover) 3 This is equal to the dimension C-C

0.58…0.7 1 570 250 ML +820 300...

0.7…0.99 1 390 250 ML +640 55.5 2 106 74

0.99…2.0 1 340 250 ML +590 55.5 2 106 74

5300

Dimensions in inches

Liquid density

[lb/ft³]

a b C-C ML d e k L p q Øt

Axial / Axial process connections

1 For more data, refer to "Floats" at the end of this chapter 2 If ambient temperature is -40...-4°F: 3.4¨ (with Plexiglas® cover) 3 This is equal to the dimension C-C

36.2…43.7 1 22.4 9.8 ML +32.3 11.8...

43.7…61.8 1 15.3 9.8 ML +25.2 2.2 2 4.2 2.9

61.8…124.8 1 13.4 9.8 ML +23.2 2.2 2 4.2 2.9

Weights in kg and lb

Dimensions [mm]

55.5 2 106 74

Dimensions [inches]

2.2 2 4.2 2.9

208

32 113 42.4

38 113 42.4

32 113 42.4

1.3 4.4 1.7

Weights Weights for every

additional 100 mm

Weights for every

additional 4 inches

[kg] [lb] [kg] [lb]

Min.: DN15 PN40 flanges 7.4…8 1 16.3…17.6 2 0.3 0.7 Max: 1½¨ 600 lb flanges 12.4…13 1 27.3…28.7 2 0.3 0.7

Limit switch 0.085 0.2

1 When L=500 mm - if liquid density is low, then weight is higher 2 When L=20¨ - if liquid density is low, then weight is higher

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8 TECHNICAL DATA

Advanced version: Top lateral / Bottom axial process connections

BM 26 BASIC/ADVANCED

Figure 8-8: Top lateral / Bottom axial process connections

1 Optional vent with 3/8 NPT connection (with plug) or optional vent with 1/2 NPT or G 1/2 connection (with plug) on a

plate flange

2 Process connection (flange) 3 Welded antenna option for the OPTIWAVE 7300 radar level transmitter with ¼ NPT connection for a flushing system 4 ½ BSP connection for OPTIFLEX 1300 TDR level transmitter with ½ NPT lateral vent (with plug) 5 Optional vent (flange) 6 Optional DN40 top flange for other level transmitters with ½ NPT lateral vent (with plug) 7 Optional level switch 8 Level indicator with optional scale 9 Optional male thread (½... ¾ NPT or G ½...¾) or long stud (½¨ or ¾¨) connection 10 Optional support bracket - also refer to "Support bracket option: Dimensions and weight"

Note:

• C-C = Centre-to-face length (process connections)

• ML = Measuring length

• L = Overall length

• a = bottom dead zone; b = Distance from the axis of top connection to the top of the device

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BM 26 BASIC/ADVANCED

Dimensions in mm

TECHNICAL DATA 8

Liquid

Dimensions [mm]

density

[kg/l]

Top lateral / Bottom axial process connections

1 For more data, refer to "Floats" at the end of this chapter 2 Optional 3/8NPT vent: 228mm. Optional 1/2NPT vent: 228 mm. Optional G1/2 vent: 220 mm. Optional welded OPTIWAVE 7300 transmit-

ter: 542 mm. Optional OPTIFLEX 1300 transmitter with 2 mm single cable probe: 454 mm. Optional flange vent: 328 mm. Optional DN40 flange: 193 mm.

3 EN flange, type B: 135.2 mm. EN flange, type C: 134.7 mm. EN flange, type E: 135.2 mm. Long stud: 130.2 mm. Male thread connection:

58.2 mm.

4 If ambient temperature is -40...-20°C: 85.5 mm (with Plexiglas® cover) 5 Depends on the options selected. Contact your local sales office for more data.

0.58…

0.7

0.7…

0.99

0.99…

2.0

a b C-C ML c d e g k L p q r s Øt

580

400

360

300

+580

300

+400

+360

...5

55.54106 15 74

32 113 259 70 42.4

Dimensions in inches

Liquid

density

[lb/ft³]

Top lateral / Bottom axial process connections

1 For more data, refer to "Floats" at the end of this chapter 2 Optional 3/8NPT vent: 9.0¨. Optional 1/2NPT vent: 9.0¨. Optional G1/2 vent: 8.6¨. Optional welded OPTIWAVE 7300 transmitter: 21.3¨. Op-

tional OPTIFLEX 1300 transmitter with 0.08¨ single cable probe: 17.9¨. Optional flange vent: 12.9¨. Optional DN40 flange: 7.6¨.

3 EN flange, type B: 5.3¨. EN flange, type C: 5.1¨. EN flange, type E: 5.3¨. Long stud: 5.1¨. Male thread connection: 2.3¨. 4 If ambient temperature is -40...-4°F: 3.4¨ (with Plexiglas® cover) 5 Depends on the options selected. Contact your local sales office for more data.

36.2…

43.7

43.7…

61.8

61.8…

124.8

a b C-C ML c d e g k L p q r s Øt

22.8

15.7

14.2

+22.8

208

+15.7

+14.2

11.

8...

Dimensions [inches]

2.244.2 0.6 2.9

1.3 4.4 10.2 2.8 1.7

Weights in kg and lb

Weights Weights for every

additional 100 mm

[kg] [lb] [kg] [lb]

Min.: DN15 PN40 flanges 6.7…7.3 1 14.8…16.1 2 0.3 0.7 Max: 1½¨ 600 lb flanges 9.2…9.8 1 20.3…21.6 2 0.3 0.7

Limit switch 0.085 0.2

1 When L=500 mm - if liquid density is low, then weight is higher 2 When L=20¨ - if liquid density is low, then weight is higher

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Weights for every

additional 4 inches

8 TECHNICAL DATA

Advanced version: Top axial / Bottom lateral process connections

BM 26 BASIC/ADVANCED

Figure 8-9: Top axial / Bottom lateral process connections

1 Process connection (flange) 2 Optional male thread (½... ¾ NPT or G ½...¾) or long stud (½¨ or ¾¨) connection 3 Optional level switch 4 Level indicator with optional scale 5 Optional drain (flange) 6 Optional drain with 1/2 NPT, 3/8 NPT, G 1/2 or G 3/8 connection (with plug) on a plate flange 7 Optional support bracket - also refer to "Support bracket option: Dimensions and weight"

Note:

• C-C = Face-to-centre length (process connections)

• ML = Measuring length

• L = Overall length

• a = Distance from the axis of the bottom connection to the bottom of the device;

b = top dead zone

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BM 26 BASIC/ADVANCED

Dimensions in mm

TECHNICAL DATA 8

Liquid

Dimensions [mm]

density

[kg/l]

Top axial / Bottom lateral process connections

1 For more data, refer to "Floats" at the end of this chapter 2 Optional 1/2NPT or 3/8NPT drain + plug: 480 mm. Optional G1/2 or G3/8 drain + plug: 472 mm. Optional drain flange: 580 mm. 3 EN flange, type B: 135.2 mm. EN flange, type C: 134.7 mm. EN flange, type E: 135.2 mm. Long stud: 130.2 mm. Male thread connection:

58.2 mm.

4 If ambient temperature is -40...-20°C: 85.5 mm (with Plexiglas® cover) 5 Depends on the options selected. Contact your local sales office for more data. 6 Optional 1/2NPT or 3/8NPT drain + plug: 299 mm. Optional G1/2 or G3/8 drain + plug: 291 mm. Optional drain flange: 399 mm. 7 Optional 1/2NPT or 3/8NPT drain + plug: 255 mm. Optional G1/2 or G3/8 drain + plug: 247 mm. Optional drain flange: 355 mm.

0.58…

0.7

0.7…

0.99

0.99…

2.0

a b C-C ML c d k L p q Øt

330 ML +330 300...

310 ML +310

320 ML +320

5300

55.5

32 113 42.4

Dimensions in inches

Liquid

density

[lb/ft³]

Top axial / Bottom lateral process connections

1 For more data, refer to "Floats" at the end of this chapter 2 Optional 1/2NPT or 3/8NPT drain + plug: 18.9¨. Optional G1/2 or G3/8 drain + plug: 18.6¨. Optional drain flange: 22.8¨. 3 EN flange, type B: 5.3¨. EN flange, type C (tongue): 5.1¨. EN flange, type E: 5.3¨. Long stud: 5.1¨. Male thread connection: 2.3¨. 4 If ambient temperature is -40...-4°F: 3.4¨ (with Plexiglas® cover) 5 Depends on the options selected. Contact your local sales office for more data. 6 Optional 1/2NPT or 3/8NPT drain + plug: 11.8¨. Optional G1/2 or G3/8 drain + plug: 11.4¨. Optional drain flange: 15.7¨. 7 Optional 1/2NPT or 3/8NPT drain + plug: 10¨. Optional G1/2 or G3/8 drain + plug: 9.7¨. Optional drain flange: 14.0¨.

36.2…

43.7

43.7…

61.8

61.8…

124.8

a b C-C ML c d k L p q Øt

13 ML +13 11.8...

12.2 ML +12.2

12.6 ML +12.6

Dimensions [inches]

2.2

208

2.2

2.9

1.3 4.4 1.7

Weights in kg and lb

Weights Weights for every

additional 100 mm

[kg] [lb] [kg] [lb]

Min.: DN15 PN40 flanges 6.7…7.3 1 14.8…16.1 2 0.3 0.7 Max: 1½¨ 600 lb flanges 9.2…9.8 1 20.3…21.6 2 0.3 0.7

Limit switch 0.085 0.2

1 When L=500 mm - if liquid density is low, then weight is higher 2 When L=20¨ - if liquid density is low, then weight is higher

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Weights for every

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8 TECHNICAL DATA

8.7 Analog transmitter: Dimensions and weight

BM 26 BASIC/ADVANCED

Figure 8-10: Analog transmitter

1 Non-Ex or Ex i analog transmitter (at the top of the reed chain) 2 Non-Ex or Ex i analog transmitter (at the bottom of the reed chain) 3 Non-Ex or Ex i analog transmitter (at the top of the reed chain, with optional LCD indicator) 4 Non-Ex or Ex i analog transmitter (at the bottom of the reed chain, with optional LCD indicator)

Dimensions in mm

Converter Dimensions [mm]

a b c ML d e

Non-Ex or Ex i 52 103 189

Non-Ex or Ex i, with optional LCD indicator 52 115 234

1 Refer to the dimension ML for each device version

Dimensions in inches

Converter Dimensions [inches]

a b c ML d e

Non-Ex or Ex i 2.1 4.1 7.4

Non-Ex or Ex i, with optional LCD indicator 2.1 4.5 9.2

1 Refer to the dimension ML for each device version

83 50

90 50

3.3 2.0

3.5 2.0

Weights in kg and lb

Converter Weights for 1mWeights for

40 inches

[kg] [lb] [kg] [lb]

Non-Ex or Ex i 1.32 2.9 +1 +2.20

Non-Ex or Ex i, with optional LCD indicator 1.85 4.1 +1 +2.20

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Weights for every

additional 1000 mm

Weights for every

additional 40 inches

BM 26 BASIC/ADVANCED

8.8 Support bracket option: Dimensions and weight

TECHNICAL DATA 8

Figure 8-11: Support bracket option

1 Attach the collar to the measuring chamber 2 Attach the plate to the tank

Dimensions and weights in mm and kg

Dimensions [mm] Weights

[kg]

a b c d e f

Support bracket 50 25 80 40 5 Ø15 0.22

Dimensions and weights in inches and lb

Dimensions [inches] Weights

a b c d e f

Support collar 2 1 3.14 1.57 0.2 Ø0.6 0.48

[lb]

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8 TECHNICAL DATA

8.9 Guidelines for maximum operating pressure

Make sure that the devices are used within their operating limits. Observe the following requirements:

Pressure derating chart for the Basic version in barg

BM 26 BASIC/ADVANCED

1 Process pressure, P [barg] 2 Length of the indicator, L [m]

Pressure derating chart for the Basic version in psig

1 Process pressure, P [psig] 2 Length of the indicator, L [ft]

INFORMATION!

The EU Pressure Equipment Directive does not apply to the use of the BM 26 Basic.

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BM 26 BASIC/ADVANCED

Pressure derating chart (PED 97/23/EC) for the Advanced version with a 316 L measuring chamber in barg

1 Process pressure, P [barg] 2 Process temperature, T [°C] 3 PN40, PN63, PN100 (EN 1092-1), 300LB (ASME B16.5) flanges, welded pipes and threaded pipes 4 150LB (ASME B16.5) flanges

TECHNICAL DATA 8

Pressure derating chart (PED 97/23/EC) for the Advanced version with a 316 L measuring chamber in psig

1 Process pressure, P [psig] 2 Process temperature, T [°F] 3 PN40, PN63, PN100 (EN 1092-1), 300LB (ASME B16.5) flanges, welded pipes and threaded pipes 4 150LB (ASME B16.5) flanges

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8 TECHNICAL DATA

8.10 Floats

Make sure that the devices are used within the operating limits of the floats. Refer to the table and graphs that follow:

BM 26 Basic: Application limits of floats in °C, bar and kg/l

BM 26 BASIC/ADVANCED

Dimensions Material Density

Maximum operating pressure [barg]

range

[mm] [kg/l] 20°C 100°C 150°C

Float Ø32 × 245 316L 0.80…1.19 16 15.1 13.7

BM 26 Basic: Application limits of floats in °F, psi and lb/ft³

Dimensions Material Density

range

[inches] [lb/ft³] 70°F 210°F 300°F

Float Ø1.3 × 9.6 316L 49.9…74.3 232 219 199

Maximum operating pressure [psig]

BM 26 Advanced: Application limits of floats in °C, bar and kg/l

Dimensions Material Density

range

[mm] [kg/l] 20°C 100°C 150°C 200°C 250°C 300°C

Float 1 Ø32 × 420 Titanium 0.58…0.7 40 37.9 34.4 31.8 29.8 27.6 Float 2 Ø32 × 240 Titanium 0.7…0.99 40 37.9 34.4 31.8 29.8 27.6 Float 3 Ø32 × 185 316L 1 0.99…2.0 40 37.9 34.4 31.8 29.8 27.6

1 Hastelloy® C-276 is available on request

Maximum operating pressure [barg]

BM 26 Advanced: Application limits of floats in °F, psi and lb/ft³

Dimensions Material Density

range

[inches] [lb/ft³] 70°F 210°F 300°F 390°F 480°F 570°F

Float 1 Ø1.3 × 16.5 Titanium 36.2…43.7 580 449 500 461 432 400 Float 2 Ø1.3 × 9.4 Titanium 43.7…61.8 580 449 500 461 432 400 Float 3 Ø1.3 × 7.3 316L 1 61.8…124.8 580 449 500 461 432 400

1 Hastelloy® C-276 is available on request

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Maximum operating pressure [psig]

BM 26 BASIC/ADVANCED

9.1 Liquid level offset: description

The float contains magnets that rotate the flaps in the indicator column on the side of the measuring chamber. The position of the magnets does not correspond to the level of liquid so the scale is offset at the factory to take into account this difference. The offset of the magnets depends on the liquid density. Refer to the illustration that follows:

Magnet offset

APPENDIX 9

Figure 9-1: Magnet offset

CAUTION!

If the product density changes, the device will not measure accurately. Contact your local sales office for more data and advice.

INFORMATION!

The limit switches are not delivered attached to the device and the liquid level offset must be taken into account. For the limit switch installation procedure, refer to Optional limit switch on page 23

. For liquid level offset switches and other correction data, refer to

correction data on page 80

Liquid level offset:

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9 APPENDIX

9.2 Liquid level offset: correction data

Liquid level offset

Figure 9-2: Liquid level offset

1 Top of the magnets 2 Maximum liquid level 3 Minimum liquid level

h is the length of the float, a is the distance to the zero point of the magnets from the top of the float d is the liquid level relative to the zero point of the magnet

BM 26 BASIC/ADVANCED

Dimensions in mm and kg/l

Float Product density Dimensions [mm]

[kg/l] a h d

Basic version, float 1 0.8…1.19 45 245 Advanced version, float 1 0.58…0.7 45 420 Advanced version, float 2 0.7…0.99 45 240 Advanced version, float 3 0.99…2.0 45 185

1 Refer to the graphs that follow

Dimensions in inches and lb/ft³

Float Product density Dimensions [inches]

[lb/ft³] a h d

Basic version, float 1 49.9…74.3 1.8 9.6 Advanced version, float 1 36.2…43.7 1.8 16.5 Advanced version, float 2 43.7…61.8 1.8 9.4 Advanced version, float 3 61.8…124.8 1.8 7.3

1 Refer to the graphs that follow

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BM 26 BASIC/ADVANCED

Basic version: Float magnet offset in relation to liquid level in mm

Figure 9-3: Basic version: Float magnet offset in relation to liquid level in mm

1 Liquid level in relation to the magnet zero point, d [mm] 2 Liquid density, ρ [g/cm³] 3 Curve for Basic version float

APPENDIX 9

Basic version: Float magnet offset in relation to liquid level in inches

Figure 9-4: Basic version: Float magnet offset in relation to liquid level in inches

1 Liquid level in relation to the magnet zero point, d [inches] 2 Liquid density, ρ [lb/ft³] 3 Curve for Basic version float

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9 APPENDIX

Advanced version: Float magnet offset in relation to liquid level in mm

Figure 9-5: Advanced version: Float magnet offset in relation to liquid level in mm

1 Liquid level in relation to the magnet zero point, d [mm] 2 Liquid density, ρ [g/cm³] 3 Curve for Advanced version float 1 4 Curve for Advanced version float 2 5 Curve for Advanced version float 3

BM 26 BASIC/ADVANCED

Advanced version: Float magnet offset in relation to liquid level in inches

Figure 9-6: Advanced version: Float magnet offset in relation to liquid level in inches

1 Liquid level in relation to the magnet zero point, d [inches] 2 Liquid density, ρ [lb/ft³] 3 Curve for Advanced version float 1 4 Curve for Advanced version float 2 5 Curve for Advanced version float 3

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BM 26 BASIC/ADVANCED

9.3 Glossary

Analog transmitter

Analog transmitter An optional device that transmits an output given by the position of a

Analog transmitterAnalog transmitter

Electromagnetic compatibility

Electromagnetic compatibility Defines how much a device influences or is influenced by other devices that

Electromagnetic compatibilityElectromagnetic compatibility

Float

Float An air-filled, sealed cylinder that contains magnets. The float stays on the

FloatFloat

APPENDIX 9

magnetic field along a resistance reed chain. The resistance reed chain is in a tube attached adjacent to the measuring chamber. Output options include 4...20 mA, HART, PROFIBUS PA and FOUNDATION™ Fieldbus.

generate electromagnetic fields during operation. Refer to European standard EN 61326-1 and EN 61326-2-3 for further details.

surface of liquid in the measuring chamber. The magnetic field of the float operates equipment adjacent to the measuring chamber: this includes the level indicator column, the optional analog transmitter and optional limit switches.

Level indicator

Level indicator The level indicator is column of 2-color, rotating flaps (or a floating index, if

Level indicatorLevel indicator

Limit switch

Limit switch An optional device with a reed contact that is operated by the magnetic field

Limit switchLimit switch

this option is available) sealed in a heat-resistant glass tube. An optional scale show the level in the tank in m + cm, feet + inches or % filled.

of the float. It is attached at one or more points adjacent to the measuring chamber. It indicates when the level of the liquid is at a reference point. The switch is bi-stable. The switch stays "open" or "closed" until the float goes back to its initial position.

Measuring chamber

Measuring chamber The measuring chamber is a bypass chamber that is attached adjacent to a

Measuring chamberMeasuring chamber

tank with contents that must be measured. There are 2 process connections: 1 at the top and 1 at the bottom of the measuring chamber. The measuring chamber contains a float. Options include axial or lateral process connections, vents, drains and support collars

Radar level transmitter

Radar level transmitter An optional device that transmits a high frequency signal whose frequency

Radar level transmitterRadar level transmitter

increases linearly during the measurement phase (called the frequency sweep). The signal is emitted, reflected on the measuring surface and received with a time delay. The frequency difference is processed and the result is the distance to the surface of the liquid. This data is converted into an output. For more data, refer to technical documentation for the OPTIWAVE 7300 C.

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9 APPENDIX

TDR

TDR Time domain reflectometry (TDR). The principle used by the TDR level

TDRTDR

TDR level transmitter

TDR level transmitter An optional device (attached to the top of the measuring chamber) that

TDR level transmitterTDR level transmitter

9.4 Order code

The characters of the order code highlighted in light grey describe the standard.

Basic version

BM 26 BASIC/ADVANCED

transmitter. For more data, refer to technical documentation for the OPTIFLEX 1300 C.

transmits low-intensity electromagnetic pulses along a rigid or flexible conductor. When the pulses get to the surface of the product to be measured, the pulses are reflected. The device measures the time from when the pulse is transmitted to when it is received: half of this time is equivalent to the distance from the reference point of the device (the thread stop) to the surface of the product. The time value is converted into an output. For more data, refer to technical documentation for the OPTIFLEX 1300 C.

VF41 4 BM 26 Basic Magnetic bypass level indicator:

VF41

VF41 4 Order code (complete this code on the pages that follow)

VF41VF41

BM 26 Basic Magnetic bypass level indicator:

BM 26 Basic Magnetic bypass level indicator:BM 26 Basic Magnetic bypass level indicator:

-40...+150

-40...+150°C and -16 bar max. / -40...300

-40...+150-40...+150

Material

MaterialMaterial

0 316L

C and -16 bar max. / -40...300°F and 232 psi max.

C and -16 bar max. / -40...300C and -16 bar max. / -40...300

Approval

ApprovalApproval

0 Non-Ex

1 ATEX

Other approval

Other approvalOther approval

0 Without

Process temperature

Process temperatureProcess temperature 1 -40...+150°C (-40...+300°F)

Density [kg/l]/Float material

Density [kg/l]/Float materialDensity [kg/l]/Float material

1 0.8...1.19 / 316L

Orientation of process connections

Orientation of process connectionsOrientation of process connections

0 Lateral / Lateral

1 Bottom lateral / Top axial

2 Bottom axial / Top lateral

3 Axial / Axial

4 Bottom lateral / Top axial + 1 support bracket

5 Bottom axial / Top lateral + 1 support bracket

6 Axial / Axial + 2 support brackets

Process connection type

Process connection typeProcess connection type

0 Without (3/8 NPTF for axial process connections)

1 Flange connection

2 Welded connection

3 Threaded connection (male)

Order code (complete this code on the pages that follow)

Order code (complete this code on the pages that follow)Order code (complete this code on the pages that follow)

F and 232 psi max.

F and 232 psi max.F and 232 psi max.

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BM 26 BASIC/ADVANCED

Process connection

Process connectionProcess connection

0 Without

1 DN15 PN40

3 DN20 PN40

5 DN25 PN40

7 DN40 PN40 D ½¨ 150LB E ½¨ 300LB F ¾¨ 150LB G ¾¨ 300LB H 1¨ 150LB K 1¨ 300LB L 1½¨ 150LB M 1½¨ 300LB R Welded pipe ½¨, sch10, length 107 mm S Welded pipe ¾¨, sch10, length 107 mm T Threaded pipe ¾ NPT, Sch10, male, length 35 mm U Threaded pipe ½ NPT, Sch10, male, length 35 mm V Threaded pipe G ¾, Sch10, male, length 35 mm W Threaded pipe G ½, Sch10, male, length 35 mm

Flange facing

Flange facingFlange facing

0 Without (options without flange connections)

B Form B1 (EN 1092-1)

F Form RF (ASME B16.5)

Vent

VentVent

0 Without

1 3/8 NPT + plug

Drain

DrainDrain

1 3/8 NPT + plug 2 1¼ NPT + plug (without flange)

Sealing

SealingSealing

0 Without

Indicator / scale

Indicator / scaleIndicator / scale

0 Without indication

1 Flaps / without scale

2 Flaps / m + cm

3 Flaps / feet + inch

4 Flaps / %

VF41

VF41 4 Order code (complete this code on the pages that follow)

VF41VF41

Order code (complete this code on the pages that follow)

Order code (complete this code on the pages that follow)Order code (complete this code on the pages that follow)

APPENDIX 9

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9 APPENDIX

Transmitter/Converter position

Transmitter/Converter positionTransmitter/Converter position

0 Without

D LT40 (4-20 mA) + display / top of chamber

E LT40 (4-20 mA+HART) + display / top of chamber 1

F LT40 (4-20 mA) / top of chamber

G LT40 (4-20 mA+HART) / top of chamber

H LT40 (FF) / top of chamber

K LT40 (PROFIBUS PA) / top of chamber

N LT40 (4-20 mA) + display / bottom of chamber

P LT40 (4-20 mA+HART) + display / bottom of chamber 1

R LT40 (4-20 mA) / bottom of chamber

S LT40 (4-20 mA+HART) / bottom of chamber

T LT40 (FF) / bottom of chamber

U LT40 (PROFIBUS PA) / bottom of chamber

Transmitter approval

Transmitter approvalTransmitter approval

0 Without

1 Ex i

Number of limit switches

Number of limit switchesNumber of limit switches

0 Without

1 1 switch

2 2 switches

3 3 switches

4 4 switches

5 5 switches

Limit switch approval

Limit switch approvalLimit switch approval

0 Without

1 Ex i

A Namur (DIN 19234)

B Namur (DIN 19234), Ex i

VF41

VF41 4 0 0

VF41VF41

Certificate for calibration

Certificate for calibrationCertificate for calibration

0 Without

1 Adjustment certificate

VF41

VF41 4 0 0 0

VF41VF41

VF41

VF41 4 0 0 0 Order code (complete this

VF41VF41

BM 26 BASIC/ADVANCED

Tag number

Tag numberTag number

0 Without 2 Tag n° on nameplate

Order code (complete this

Order code (complete this Order code (complete this code on the pages that follow)

code on the pages that follow)

code on the pages that follow)code on the pages that follow)

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BM 26 BASIC/ADVANCED

VF41

VF41 4 0 0 0 Order code

VF41VF41

1 For non-Ex devices only

APPENDIX 9

C-C length

C-C lengthC-C length

0 0m

1 1m

2 2m

3 3m

4 4m

5 5 m (5.3 m max.)

C-C length

C-C lengthC-C length

0 0mm

1 100 mm

2 200 mm

3 300 mm

4 400 mm

5 500 mm

6 600 mm

7 700 mm

8 800 mm

A 900 mm

Order code

Order codeOrder code

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9 APPENDIX

Advanced version

BM 26 BASIC/ADVANCED

VF42 4 BM 26 Advanced Magnetic bypass level indicator:

VF42

VF42 4 Order code (complete this code on the pages that follow)

VF42VF42

BM 26 Advanced Magnetic bypass level indicator:

BM 26 Advanced Magnetic bypass level indicator:BM 26 Advanced Magnetic bypass level indicator: 40 bar max. at 20

40 bar max. at 20°C / 27.6 bar max. at 300

40 bar max. at 2040 bar max. at 20

Material

MaterialMaterial

0 316L

Hastelloy® C-276 (on request)

Approval

ApprovalApproval

0 Non-Ex

1 ATEX

Other approval

Other approvalOther approval

0 Without

C / 27.6 bar max. at 300°C (580 psi max. at 68

C / 27.6 bar max. at 300C / 27.6 bar max. at 300

Process temperature

Process temperatureProcess temperature 0 -40...+20°C (-40...+68°F) 1 -40...+50°C (-40...+122°F) 2 -40...+100°C (-40...+212°F) 3 -40...+150°C (-40...+302°F) 4 -40...+200°C (-40...+392°F) 5 -40...+250°C (-40...+122°F) 6 -40...+300°C (-40...+572°F)

Density [kg/l]/Float material

Density [kg/l]/Float materialDensity [kg/l]/Float material

0 Without

1 0.58...0.7 / Titanium

2 0.70...0.99 / Titanium

3 0.99...2 / 316L

0.99...2 / Hastelloy® (on request)

Orientation of process connections

Orientation of process connectionsOrientation of process connections

0 Lateral / Lateral

1 Bottom lateral / Top axial

2 Bottom axial / Top lateral

3 Axial / Axial

4 Bottom lateral / Top axial + 1 support bracket

5 Bottom axial / Top lateral + 1 support bracket

6 Axial / Axial + 2 support brackets

Process connection type

Process connection typeProcess connection type

0 Without

1 Flange connection

2 Welded connection

3 Threaded connection (male)

4 Loose flange EN

Order code (complete this code on the pages that follow)

Order code (complete this code on the pages that follow)Order code (complete this code on the pages that follow)

C (580 psi max. at 68°F / 400 psi maxi. at 572

C (580 psi max. at 68C (580 psi max. at 68

F / 400 psi maxi. at 572°F)

F / 400 psi maxi. at 572F / 400 psi maxi. at 572

F)F)

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BM 26 BASIC/ADVANCED

Process connection

Process connectionProcess connection

0 Without

1 DN15 PN40

2 DN15 PN100

3 DN20 PN40

4 DN20 P100

5 DN25 PN40

6 DN25 PN100

7 DN40 PN40

8 DN40 PN100

A DN50 PN40

B DN50 PN63

C DN50 PN100 D ½¨ 150LB E ½¨ 300LB F ¾¨ 150LB G ¾¨ 300LB H 1¨ 150LB K 1¨ 300LB L 1½¨ 150LB M 1½¨ 300LB N 2¨ 150LB P 2¨ 300LB R Welded pipe ½¨, sch10, length 107 mm S Welded pipe ¾¨, sch10, length 107 mm T Threaded pipe ¾ NPT, Sch10, male, length 35 mm U Threaded pipe ½ NPT, Sch10, male, length 35 mm V Threaded pipe G ¾, Sch10, male, length 35 mm W Threaded pipe G ½, Sch10, male, length 35 mm

Flange facing

Flange facingFlange facing

0 Without (options without flange connections)

B Form B1 (EN 1092-1)

C Form C (EN 1092-1, male)

E Form E (EN 1092-1, male)

F Form RF (ASME B16.5)

Vent

VentVent

0 Without

1 3/8 NPT + plug 3 ½ NPT 4 DN40 PN40 top flange + lateral vent ½ NPT (with plug)

5 Weld connection for OPTIWAVE 7300 C 6 G ½

A As per process connection

VF42

VF42 4 Order code (complete this code on the pages that follow)

VF42VF42

Order code (complete this code on the pages that follow)

Order code (complete this code on the pages that follow)Order code (complete this code on the pages that follow)

APPENDIX 9

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9 APPENDIX

Drain

DrainDrain

1 Flange + 3/8 NPT 2 Flange + ½ NPT

3 Flange + G 3/8 4 Flange + G ½

A Flange (as per process connection)

Sealing

SealingSealing

0 Without

1 Aramid (without asbestos)

2 316L graphite

3 PTFE

Indicator / scale

Indicator / scaleIndicator / scale

0 Without indication

1 Flaps / without scale

2 Flaps / m + cm

3 Flaps / feet + inch

4 Flaps / %

Transmitter/Converter position

Transmitter/Converter positionTransmitter/Converter position

0 Without

D LT40 (4-20 mA) + display / top of chamber

E LT40 (4-20 mA+HART) + display / top of chamber 1

F LT40 (4-20 mA) / top of chamber

G LT40 (4-20 mA+HART) / top of chamber

H LT40 (FF) / top of chamber

K LT40 (PROFIBUS PA) / top of chamber

N LT40 (4-20 mA) + display / bottom of chamber

P LT40 (4-20 mA+HART) + display / bottom of chamber 1

R LT40 (4-20 mA) / bottom of chamber

S LT40 (4-20 mA+HART) / bottom of chamber

T LT40 (FF) / bottom of chamber

U LT40 (PROFIBUS PA) / bottom of chamber

Transmitter approval

Transmitter approvalTransmitter approval

0 Without

1 Ex i

Number of limit switches

Number of limit switchesNumber of limit switches

0 Without

1 1 switch

2 2 switches

3 3 switches

4 4 switches

5 5 switches

VF42

VF42 4 Order code (complete this code on the pages that

VF42VF42

Order code (complete this code on the pages that

Order code (complete this code on the pages that Order code (complete this code on the pages that follow)

follow)

follow)follow)

BM 26 BASIC/ADVANCED

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BM 26 BASIC/ADVANCED

Limit switch approval

Limit switch approvalLimit switch approval

0 Without

1 Ex i

A Namur (DIN 19234)

B Namur (DIN 19234), Ex i

VF42

VF42 4 0 0

VF42VF42

Certificate for calibration

Certificate for calibrationCertificate for calibration

0 Without

1 Adjustment certificate

Special requirement

Special requirementSpecial requirement

0 Without

2 NACE construction

Tag number

Tag numberTag number

0 Without 2 Tag n° on nameplate

VF42

VF42 4 0 0 Order code

VF42VF42

1 For non-Ex devices only

APPENDIX 9

C-C length

C-C lengthC-C length

0 0m

1 1m

2 2m

3 3m

4 4m

5 5 m (5.3 m max. >

- longer on request)

C-C length

C-C lengthC-C length

0 0mm

1 100 mm

2 200 mm

3 300 mm

4 400 mm

5 500 mm

6 600 mm

7 700 mm

8 800 mm

A 900 mm

Order code

Order codeOrder code

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9 APPENDIX

9.5 Spare parts code

The characters of the order code highlighted in light grey describe the standard.

Limit switch

BM 26 BASIC/ADVANCED

VF40 4 Limit switch

VF40

VF40 4 Order code

VF40VF40

Limit switch

Limit switchLimit switch

Used with...

Used with...Used with...

0 BM 26 Basic

1 BM 26 Advanced

Approval

ApprovalApproval

0 Non-Ex

1 ATEX

Process temperature

Process temperatureProcess temperature 0 -40...+150°C (-40...+300°F) 1 -80...+300°C (112...572°F)

Approval type

Approval typeApproval type

0 Without

1 Ex i

A Namur (DIN 19234)

B Namur (DIN 19234), Ex i

Order code

Order codeOrder code

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BM 26 BASIC/ADVANCED

Analog transmitter

APPENDIX 9

VF45 4 Analog transmitter

VF45

VF45 4 Order code

VF45VF45

1 The units (mm, % etc.) must be specified in the order 2 The units (mm, % etc.) must be specified in the order. For non-Ex devices only.

Analog transmitter

Analog transmitterAnalog transmitter

Module

ModuleModule

B 4...20 mA D FOUNDATION™ Fieldbus

E 4...20 mA with LCD indicator 1

G 4...20 mA+HART with LCD indicator 2

W 4...20 mA+HART

X PROFIBUS PA

Approval

ApprovalApproval

0 Non-Ex

1 Ex i

Mounting position

Mounting positionMounting position

1 Top

B Bottom

C-C length

C-C lengthC-C length

0 0m

1 1m

2 2m

3 3m

4 4m

5 5 m (5.3 m max. - longer on request)

C-C length (> 1000 mm)

C-C length (> 1000 mm)C-C length (> 1000 mm)

0 0mm

1 100 mm

2 200 mm

3 300 mm

4 400 mm

5 500 mm

6 600 mm

7 700 mm

8 800 mm

A 900 mm

Power supply

Power supplyPower supply

0 Without

Order code

Order codeOrder code

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10 NOTES

BM 26 BASIC/ADVANCED

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BM 26 BASIC/ADVANCED

NOTES 10

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KROHNE product overview

• Electromagnetic flowmeters

• Variable area flowmeters

• Ultrasonic flowmeters

• Mass flowmeters

• Vortex flowmeters

• Flow controllers

• Level meters

• Temperature meters

• Pressure meters

• Analysis products

• Products and systems for the oil & gas industry

• Measuring systems for the marine industry

Head Office KROHNE Messtechnik GmbH Ludwig-Krohne-Str. 5 47058 Duisburg (Germany) Tel.:+49 (0)203 301 0 Fax:+49 (0)203 301 10389 info@krohne.de

The current list of all KROHNE contacts and addresses can be found at: www.krohne.com

KROHNE BM26 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual