bypass level indicator - rehe-krohne.com · 2 1. description the bm 26a/bm26b/bm26g is a simple,...

Level measurement for high temperature, high pressure and low density Closed and robust stainless steel design with different material options IP68 local indicator, with different optional signal output

Bypass level indicator

Technical Datasheet

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1. Description The BM 26A/BM26B/BM26G is a simple, rugged instrument designed to indicate level or interface of liquid. It is a totally metal design, with optional level transmitter and limit switch for alarming. It indicates level using a float magnetically coupled to an index or a column of rotating flaps. It is ideal for aggressive media stored in tanks when the PTFE lining option is used.

It is widely used in petrochemical, chemical, metal, power, food, pharmaceutical, paper industry for level

and interface measurement.

2. Operating principle The BM 26 operates on the principle of communicating tubes. The measuring tube is connected as a side vessel to the tank so that the same conditions are obtained in the tube as those in the tank.

The float is equipped with a system of permanent magnets to transmit measured value to the local indicator. The magnet system of the float activates the magnetic flaps according to the liquid level, or a movable follower magnet in the indicating section of the indicator. The column of reversed yellow magnetic flaps, or the vertical position of the follower magnet, is the indication of the liquid level.

Installation Diagram

1. Vent plug 2. Measuring tube 3. Triangle mark 4. Glass tube for indicator 5. Scale 6. Float 7. Liquid level 8. Display of indicator 9. Index indicator (option) 10. Zero point of measurement (centerline of lower connecting flange) 11. Scale zero 12. Lower stop ( KROHNE plate) 13. Drain plug or drain valve (option) 14. Instrument nameplate


3 Product features

• Most compact and robust construction design with reliable measurement.

• Magnetic flapper or index sealed in glass tube for indicator.

• Indicator and signal output are completely isolated from process (magnetically-coupled).

• Level transmitter and limit switch are optional.

• Material options: 304L, 316, 316L, Ti and Hastelloy® C.

• Different process connection and different installation

• Branch connection of measuring tube by cold forming enables the float move freely

• Spring as the float stopper to avoid damage of the float

3.1 BM26A features

• Operating pressure should be less than 5.0 MPa.

• Operating temperature should be less than 400 (for Ex requirement, less than 200).

• Min. operating temperature is -200.

• Density should be higher than 0.5 g/cm3.

• For interface measurement, the difference of density should be higher than 0.1 g/cm3.

• IP68 sealed glass tube with magnetic flapper or index inside.

• Suitable in corrosive, sandy and windy, rainy environment.

• PTFE liner and plastic material are optional.

• Easy to change indicator, optional heat jacket and isolation.

• Signal outputs are both intrinsically safe and explosive-proof proved.

3.2 BM26B features

• Best volume and pressure ratio.

• Optimized construction design with low weight.

3.3 BM26G features

• Nominal pressure up to 25 MPa.

• Operating temperature: -200…+400.

• Min. density: 0.4 g/cm3.

*These three figures can’t be obtained at one device.

4. BM26A/BM26B/BM26G

The BM26A/B/G consists of a measuring tube, which is connected as a side vessel to the tank with different material options, an indicator isolated totally from the process, some signal output like limit switch, current output.

BM26A Standard Magnetic Level Meter

BM26B Economical Magnetic Level Meter

BM26G High temperature, high pressure, low density Magnetic Level Meter


5. Installation

BM26A / BM26B / BM26G has multiple installation to meet the customer requirements, such as:

C Two side connections

D Two inline connections

E Top side connection and bottom inline connection

F Top inline connection and bottom side connection

H Top mounted (only for BM26A)

6. Process connection BM26A/BM26B / BM26G has different process connections to meet the demands of customer, such as:

Flange connection：DIN，ANSI，GB，HG etc.

Male thread connection：Metric, Imperial, NPT etc.

Female thread connection: Metric, Imperial, NPT etc.

Welded connection.

Welding type thread type Flange type

7. Vent and drain construction

7.1 Vent 7.2 Drain

8. Approval

Explosion protection: NEPSI， ExiaIICT3-T6，ExdIICT3-T6 Explosion protection: PTB，ATEX，L.C.I.E Protection category: IP68, according to NAMUR NE21/05/93 PTB explosion protection and overfill protection certification TUV, ZeFu type testing certificate AB Svensk type testing certificate


9. BM26A technical data

Product density ≥0.5kg/l Difference of density for interface measurement

≥0.1kg/l

Operating pressure ≤5.0MPa Viscosity ≤5000mPa.s Operating temperature Standard -20～+200 Option -200～+400 Measuring range 300～6000mm Accuracy ±10mm Indicator IP68 Magnetic flap

IP68 Magnetic index Measuring tube materials 304L，316L，Ti，HC，B，Ф72×2.3 Float Ф64×200mm，316L，Ti, 304L Vent and drain Plug cock M20×1.5 Process connection DIN，ANSI，GB flange Weight 14.5kg for 1000mm (additional

0.51kg/100mm） Option

level transmitter, MS15, MS40 and KS limit switch

BM26A/C two side connections

BM26A/D two inline connections BM26A/E top side and bottom inline connection


BM26A/F top inline and bottom side connection BM26A/H top mounted

BM26A/H top mounted Measuring range 300～3000mm Operating temperature -100～+300 Operating pressure 1.6 MPa Liquid density ≥0.65kg/l Material of measuring tube 304L、316L、Φ60×2

Float Ф140×1.0mm，316L Ф140×0.7mm，316L

Note: The measurement of dead zone is 185mm, H ≥ M +185 mm

9.2 BM26A PTFE-lined

Product density ≥0.65kg/l Difference of density for interface measurement

≥0.1kg/l

Operating pressure ≤1.6MPa Viscosity ≤5000mPa.s product temperature -20～+150 Measuring range 300～6000mm Accuracy ±10mm Indicator IP68 magnetic flap or index Measuring tube materials

304 or 316L,Ф63×2.5mm， PTFE lined

Float Materials PTFE Vent and drain Blind flange Process connection DIN，ANSI，GB Weight 20kg for 1000mm（additional

0.53kg/100m） Option

level transmitter, MS15、MS40 and KS limit switch


9.3 BM26A plastic measuring tube

Product density ≥0.85kg/l

Difference of density for interface measurement

≥0.1kg/l

Operating pressure ≤0.3MPa

Viscosity ≤5000mPa.s

Product temperature -20～+60Measuring range 300～4000mm

Accuracy ±10mm

Indicator IP68 magnetic flap or index

Measuring tube materials Ф63×4.7mm CPVC

Float Materials Ф50×178mm CPVC

Vent Blind flange

Drain Blind flange, Valve option

Process connection DIN，ANSI，GB flange

Weights 6.6kg for 1000mm ( additional 0.13kg/100mm）

Option

ER analog transmitter, MS15、MS40 switch，KS switch

9.4 BM26A Heating jacket for measuring tube Product density ≥0.5kg/l


≥0.1kg/l



Operating temperature Standard -20～+200 Option -200～+400

Measuring range 300～6000mm

Accuracy ±10mm

Indicator IP68 Magnetic flap or index

Measuring tube materials 304L，316L，Ti，HC，B，Ф72×2.3

Heating jacket Ф89×2.0/304 Float Ф64×200mm，316L，Ti

Vent and drain Plug cock M20×1.5, G1/2


Weight 20.6kg for 1000mm（additional 0.82kg/100mm）

Option level transmitter, MS15、MS40 and KS limit switch

1. Entry of jacket

2. Heating jacket

3. Measuring tube

Heating jacket for measuring tube


9.5 BM26A (Low temperature measurement)

IC/TR Low-temperature measurement structure

Liquid density ≥0.5kg/l


≥0.1kg/l



Product temperature AG ≥-40

IC/AG ≥-40

TR ≥-200

IC/TR ≥-200Measuring range 300～6000mm

Accuracy ±10mm

Indicator Magnetic flap or index

Measuring tube materials 304L ，316L ，Ti ，HC ，B ，Ф72×2.3

Float Materials Ф64×200mm，316L，Ti

Vent and drain Plug cock M20×1.5


Weight 14.5kg for 1000mm（additional 0.6kg/100mm）

Option AG Level transmitter, MS15、MS40 and KS limit switch

IC/AG Level transmitter

AG

1 Plexitherm glass

2 Scale

3 Glass tube for indicator

4 Measuring tube

TR

1 Measuring tube


3 Plexitherm glass

4 Scale

IC/TR

1 Measuring tube

2 Glass wool insulation


4 Plexitherm glass

5 Stainless steel cladding


9.6 BM26A (High temperature)

Product density ≥0.5kg/l

Difference of density for Interface measurement

≥0.1kg/l



Operating temperature HR +200～+300

IC/HR +200～+300

Measuring range 300～6000mm

Accuracy ±10mm

Indicator IP68 Magnetic float Indicator

Measuring tube materials 304L，316L，Ti，HC，B，Ф72×2.3

Float Materials Ф64×200mm，316L，Ti

Vent and drain Plug cock M20×1.5


Weights 15.5kg for 1000mm (additional 0.6kg/100mm)

IC/HR High temperature structure

1. Measuring tube

2. Insulation

3. Magnetic flap or index indicator

4. Stainless steel cladding

9.7 BM26A Selection of float type

No. BM26A float

Min. density

Max. allowable operating pressure at

20 100 200 300 Product temperature

Type Dimensions

in mm Material Kg/l MPa MPa MPa MPa min. max.

1 cylindrical Ф64×200×1.0 316L 0.82 5.5 4.1 3.7 3.2 -200 400

2 cylindrical Ф64×200×0.5 316L 0.55 1.6 1.2 1.0 0.9 -200 400

3 cylindrical Ф64×208×0.6 Ti 0.50 2.3 1.3 1.0 0.8 -200 300

4 cylindrical Ф64×208×1.0 Ti 0.60 5.5 3.1 2.4 1.9 -200 300

5 cylindrical Ф50×120×2.0 PVC 0.85 0.3 - - - -10 40

6 spherical Ф140×1.0 316L 0.85 4.0 - - - - -

7 spherical Ф140×0.7 316L 0.80 2.5 - - - - -

Float test pressure = 1.5 * max. allowable operating pressure at 20


10. BM26A float selection

The floats of BM26A consist of standard and special design.

10.1 Standard float

The indicator should be installed according to the X value

showed in below picture, which is the distance between

the magnet and center line of bottom flange.

Advantage:

The standard float can be used interchangeably. If the

density changed, adjust the indicator position according to X value.

Serial production with some inventory

Reliable and stable measurement

Note: compared with the special float, there is a difference between

the real level and the rotated flapper, but the indicated value is correct.

Suggest to choose the standard float. BM26A standard float

10.2 Special float

The zero position of indicator is exactly the same with centerline of the bottom flange, no difference between the

real level and the rotated flapper, as below picture. The special float is named as T type.

Advantage:

No difference between the real level and rotated flapper,

the same with glass level gauge.

Note:

Adjust the weight of the float to keep the real level the same

with the magnet. Different density with different float weight.

The float is not able to exchange, without serial production.

The liquid density must be accurate.

BM26A special float


11: BM26G Technical data

Type：BM26G/100 Pressure rating：PN10.0MPa/class 600Ibs

Liquid density ≥0.57kg/l Difference of density for Interface measurement

≥0.1kg/l

Operating pressure ≤10.0MPa Viscosity ≤5000mPa.s Operating temperature local indicator -196～+400

Level transmitter ≤+200 Measuring range 300～6000mm Accuracy ±10mm Indicator Magnetic flap Indicator Measuring tube materials 304L，316L，Ti，HC，B，Ф76×4 Float Materials Ф56，Titanium Vent and drain Variety Process connection DIN，ANSI，GB flange Weights 22.4kg for 1000mm（ additional

0.65kg/100mm） Option Level transmitter, MS40 and KS limit

switch

PN10.0MPa Temperature - pressure curve BM26G Ti Float dimensions

Vent Drain

BM26G/100





≥0.1kg/l

Operating pressure ≤16.0MPa Viscosity ≤5000mPa.s Operating temperature local indicator -196～+400

Level transmitter ≤+200 Measuring range 300～6000mm Accuracy ±10mm Indicator Magnetic flap Indicator Measuring tube materials 304L，316L，Ti，HC，B，Ф76×5 Float Materials Ф56，Titanium Vent and drain Variety Process connection DIN，ANSI，GB flange Weights 25.2kg for 1000mm（additional

0.85kg/100mm） Option Level transmitter, MS40 and

KS limit switch

BM26G/160

PN16.0Mpa Temperature - pressure curve

BM26G Ti Float dimensions

Vent Drain




Liquid density ≥0.51kg/l Difference of density for interface measurement

≥0.1kg/l

Operating pressure ≤25.0MPa Viscosity ≤5000mPa.s Operating temperature Local display -196～+400

Level transmitter ≤+200 Measuring range 300～6000mm Accuracy ±10mm Indicator Magnetic flap Indicator Measuring tube material 304L，316L，Ti，HC，B，Ф80×8.5 Float Materials Ф56，Titanium Vent and drain variety Process connection DIN，ANSI，GB flange Weights 32.5kg for 1000mm (additional

1.5kg/100mm） Option Level transmitter, MS40 and KS limit

switch

BM26G/250

PN25.0Mpa Temperature - pressure curve

BM26G Ti Float dimensions

Vent Drain


14: BM26B Technical data


≥0.1kg/l

Operating pressure ≤4.0Mpa Viscosity ≤5000mPas Product temperature -20～＋300 Measuring range 300～6000mm Accuracy ±10mm Indicator IP rating IP68 Measuring tube and float material

304L，316L，Ti，Hastelloy® C φ42.4×2

Vent Plug cock M16×1.5 Drain Plug cock M16×1.5

ball valve（Female thread 1/2“NPT）Process connection DIN ， ANSI ， HG20592 ， GB/T

flange, DN15～50，PN16/40

Option Level transmitter， Radar/TDR transmitter， MS40、KS limit switch

Weight 7.4kg for 500mm; (additional 0.3Kg/100mm)

Float data

Density Dimension mm

Material

0.54~0.69kg/l φ32×420 Ti 0.70~0.98kg/l φ32×240 Ti 0.99~2.0 kg/l φ32×185 316L

Vent plug or valve

Level transmitter

Level indication

Process connection Red flap means

float failure

Stainless steel optional switch Measuring tube

Drain plug or valve

BM26 B/C two side connections

Float Dimension

mm φ32×420 480 φ32×240 299 φ32×185 255

BM26 B/D two inline connection

Float Dimension

mm φ32×420 570 φ32×240 390 φ32×185 340


BM26 B/E top side and bottom inline connection

Float dimension

mm φ32×420 580 φ32×240 400 φ32×185 360

BM26 B/F top inline and bottom side connection

Float dimension

mm φ32×420 480 φ32×240 299 φ32×185 255

15. level transmitter

15.1 Principle In addition to the local indicator, the BM 26 can be equipped with the ER analog transmitter system. This transmitter consists of a tube that clamped onto the measuring tube and with reed and resistor chain inside, a housing with converter inside to provide the current output. The moveable float will activate different reeds when level changing, also provide different resistance value and then convert to 4…20mA current output.

For non-Ex application, ER transmitter provide 4…20 mA current output directly.

For Exd application, choose the explosive-proof transmitter housing with marking Ex d IIC T3-T6.

For Exi application, please connect suitable related apparatus to the transmitter. Ex marking :ExiaIICT3-T6.

ER analog transmitter principle

15.2 Technical data of ER analog transmitter

Measuring range 300-6000mm Accuracy ±10mm Output 4-20mA Power supply 14-36VDC Reverse Connection

Protection Load characteristic （U-12）/20 mA(max.500Ω) Electromagnetic compatibility

According to EN50081-1 and EN50082-2

Protection category IP65 Ambient temperature -20-+60 process temperature -40-+200

15.3 Electrical connection

Signal convertor

Cable entry: M20X1.5 Electric connection for Exi application


signal converter signal converter

Cable entry: M20X1.5 Cable entry: M20X1.5

Electric connection for Exd application Electric connection for non-Ex application

Installation note for intrinsically safe transmitter:

The BM26/…/ER/Exi has been approved by NEPSI(National Supervision and

Inspection Center for Explosion Protection and Safety of Instrumentation in

China) under Certification No.

GYB16.1206X

This level meter is designed with intrinsically safe type of protection with

protection level of Ex ia IIC T3-T6 and designed according to GB 3836.1-2010,

GB 3836.4-2010 and GB 3836.20-2010 standards. It must be equipped with

safety barrier to form intrinsically safe explosion protective system and applies to

fields exist explosive mixture gas under IIC grade.

Please comply with following notes when installation:

1. The level meter must be equipped with safety barrier approved by NEPSI,

then can be used in environment with explosive gas mixture. Please pay

attention to the cable connection which must be complied with the

instruction of both.

2. Safety barrier must be placed in secure location and complied with the

installation instruction.

3. Intrinsically safe data:

Ui=28V li=120mA Pi=0.84W Ci=22nF Li=0

The connection cable between level meter and safety barrier must be

shielded (with insulation sheath). The cross section area of each wire must

be higher than 0.5 mm2. The shielding layer must be grounded at safety

location. Please avoid the electromagnetic interference when cable

distribution. The level meter with safety barrier must be meet following

requirement:

Uo≤Ui, Io≤Ii, Po≤Pi, Co≥Ci+Cc, Lo≥Li+Lc

Uo, Io, Po, Co and Lo are intrinsically safe type output data and external

allowable data. Cc and Lc are respectively capacitance and inductance of

connection cable. The relation between temperature class and measuring

temperature is as bellowed.

Temperature class T3 T4 T5 T6

Max. operating temperature 190 125 95 80

4. Do not replace the components by yourselves, please contact with the

manufacture.

Installation note for explosive-proof transmitter:

The BM26/…/ER/Exd has been approved by NEPSI (National Supervision

and Inspection Center for Explosion Protection and Safety of

Instrumentation in China) under Certification No.

GYB16.1205X

This level meter is designed with explosive-proof type of protection with

protection level of Ex d IIC T3-T6 and designed according to GB 3836.1-

2010, GB 3836.2-2010 standards.

1. The level meter should be grounded.

2. Pay attention to the warning marking “open the transmitter

housing after power cutoff” when maintenance.

3. The outer diameter of the connecting cable must be within

the sealing range of the cable entry (8.5-10mm). please

fasten the gland nut to fasten cable sheath.

4. Sealing ring and cable sheath should be replace in time

when it is aged.

5. The voltage, current and power should be complied with

the specified value.

6. Maintenance must be carried out at secure location.

Please be sure that no hazardous gas around before

maintenance.

7. The surface temperature should complied with the

temperature class.

For both intrinsically safe and explosive-proof type of

protection, the level meter should be installed, operated

and repaired according to the technical datasheet of the

meter, part 15 of GB3836.15-2010 and GB50058-1992.


16.4 MS15/BRX reed switch

It is also a kind of reed switch which can be activated by the float magnet. The minimum distance between two switches

is 50mm. explosive proof housing is available.

Explosion protection: Exd IICT3-T6

Contact type: SPDT

16.5 Technical data of limit switch

Type MS15/MC MS40 MS40/NAMUR MS15/BRX

Contact SPDT SPDT SPDT SPDT

Switch type Micro switch reed reed reed

Switch capacity 4A, 250VAC, 1000VA 1A, 250VAC, 60VA NAMUR 19234 1.5A, 250VAC, 20VA

Apply to BM26A BM26A, BM26B, BM26G BM26A, BM26B, BM26G BM26A, BM26B

Ambient temperature -20~120 -40~120 -40~120 -20~60

Operating temperature <250 <250 <250 <200

Ingress protection IP65 IP65 IP65 IP65

Cable entry M20X1.5 M16X1.5 M16X1.5 M20X1.5

Housing material Plastic Aluminum Aluminum Aluminum

Explosion protection without Ex ia II CT3-T6 Ex ia II CT3-T6 Ex d II CT3-T6

weight 130g 200g 200g 200g

16: Limit switch In order to provide alarm for a specific level, the BM 26 magnetic level indicator can be equipped with various limit switches that are clamped to the measuring tube and thus adjustable over the whole measuring range. They are activated by the magnet system in the float. Depending on different operating conditions, various limit switches are available. 16.1 MS15/MC The MS15/MC limit switch is a micro switch that is activated by the magnet system in the float. The minimum distance between two switches is 30mm. Contact type: SPDT

16.2 MS40、MS40/NAMUR Reed Switch

MS40 is a bi-stable reed switch with minimum distance of 50mm. The output signal of MA40/NAMUR complies with NAMUR 1923 standard. Explosion Protection：ExiaIICT3-T6

Contact type:SPDT

16.3 KS Series Switch KS series limit switches consist of reed switch and micro switch.

It is a multi-function switch, suitable for all BM26 products. It is

activated by the float magnet, with the option of explosive proof

housing. The minimum distance between two switches is

100mm.

Explosion protection：ExdIICT3-T6

Contact type:SPDT、DPDT

MS15/MC KS seiral

MS40、MS40/NAMUR


Type KS1 KS2 KS3 KS4 KS5 KS6 KS7 KS8

Contact SPDT SPDT SPDT SPDT SPDT DPDT SPDT DPDT

Switch type reed reed reed reed Micro

switch

Micro

switch

Micro

switch

Micro

switch

Switch capacity 1A,

150VAC/DC,

20W/VA

1A,

250VAC/DC,

60W/VA

1A,

150VAC/DC,

20W/VA

1A,

250VAC/DC,

60W/VA

4A,

220VAC,

1000VA

4A,

220VAC,

1000VA

4A,

220VAC,

1000VA

4A,

220VAC,

1000VA

Apply to BM26A

BM26B

BM26A

BM26B

BM26G BM26G BM26A

BM26B

BM26A

BM26B

BM26G BM26G

Ambient temperature -20~120

Operating temperature <200

Ingress protection IP65

Cable entry M20X1.5 female

Housing material Aluminum

Explosion protection Exd II CT3-T6

Weight 650 g 690 g


17. Type Code

17.1 BM26B type code (φ42.4mm)

Indicator P Magnetic flap Indicator

Installation

C two side connections D two inline connections E top side and bottom inline connections F top inline and bottom side connections

Material RR 304L RRL 316L SM Other special material

Current Output

0 Without ER 4-20mA，Reed chain Transmitter EH 4-20mA+HART，Reed chain Transmitter MR 4-20mA+HART，Magnetostrictive Transmitter PA Profibus PA communication FF Foundation field bus communication

Number/ Limit Switches

0 Without Kn/MS40 MS40 Reed switch(SPDT,60VA/1A/250VAC,Exia ⅡCT3-T6) Kn/MS40/NUMAR MS40 NAMUR reed switch(SPDT,NUMAR, Exia ⅡCT3-T6) Kn/KS Explosive-proof switch(KS1~KS8) Kn/MS15/BRX Explosive-proof switch (SPDT,20VA/1.5A/250VAC,ExdⅡCT3-T6)

Explosion Protection N Without Exi Intrinsically safe, Ex ia ⅡCT3-T6 Exd Explosive-proof, ExdⅡCT3-T6

Temperature range

0 Standard B With heat jacket AG Low temperature (-40°C) IC/AG Low temperature (-40°C) with insulation HR High temperature (+300°C, max. 2.5Mpa)

Density /Float

L1 0.54 to 0.69g/cm3/Titanium L2 0.70 to 0.98g/cm3/Titanium L3 0.99 to 2.00g/cm3/316L T9 Special Float

Process connection

F Flange S1 Female thread S2 Male thread H welded connection

Vent

M Plug cock M16x1.5(standard) N Plug cock NPT 1/2" V Ball valve(DN15,NPT 1/2" female thread) F Flange DN15 SV Special vent

Drain

M Plug cock M16x1.5 (standard) N Plug cock NPT 1/2" V Ball valve(DN15,NPT 1/2" female thread) F Flange DN15 SD Special drain

Cable Entry M1 M20x1.5 female thread (standard) G1 G1/2” female thread N1 NPT1/2” female thread

Certificate

0 Without R1 Material certificate R2 Pressure test certificate R3 Inspection records R4 Cleaning report R5 X-ray inspection report R6 PMl R7 Nuclear R9 Other

BM26B


17.2 BM26A/BM26G type code (￠72mm, ￠76-90mm) :

Indicator

P Magnetic flap Indicator S Magnetic index Indicator M Metal magnetic flap Indicator（for BM26G) L Frost protection indicator UL Ultralow temperature indicator

Installation

C two side connections D two inline connections E top side and bottom inline connections F top inline and bottom side connections

H Top mounted (except for BM26G)

Material

RR 304L RRL 316L PTFE Lining PTFE(except for BM26G) PVC Engineering plastic (except for BM26G) TI Titanium alloy HC Hastelloy alloy SM Other special material

Current Output

0 without ER 4-20mA，Reed Chain Transmitter EH 4-20mA+HART，Reed Chain Transmitter MR 4-20mA+HART，Magnetostrictive Transmitter PA Profibus PA communication FF Foundation Field bus communication

Number/ Limit Switches

0 without Kn/MS15/MC Micro Switch (SPDT,1000VA/4A/250VAC,not for BM26G) Kn/MS40 Reed switch(SPDT,60VA/1A/250VAC,Exia ⅡCT3-T6) Kn/MS40/NUMAR NUMAR Reed switch(SPDT,NUMAR Exia ⅡCT3-T6) Kn/KS Explosive-proof switch(KS1~KS8)

Kn/MS15/BRX Explosive-proof switch (SPDT,20VA/1.5A/250VAC,ExdⅡCT3-T6)

Explosion

Protection

N non-Ex EXI Intrinsically safe, Ex ia II CT3-T6 EXD Explosive-proof, Ex d II CT3-T6

Temperature

range

0 Standard type B With heat jacket AG Low temperature (-40°C) IC/AG Low temperature (-40°C) with insulation TR Low temperature (-200°C) IC/TR Low temperature (-200°C) with Insulation HR High temperature (+300°C,max. 4.0Mpa) IC/HR High temperature (+300°C) with Insulation

Density /Float

1 Standard Float ≥ 0.82g/cm3 316L 1.0mm 2 Standard Float ≥ 0.55g/cm3 316L 0.5mm 3 Standard Float ≥ 0.5g/cm3 Ti 0.6mm 4 Standard Float ≥ 0.6g/cm3 Ti 1.0mm 5 Standard Float ≥ 0.85g/cm3 PVC 6 Top mounted Float ≥0.65g/cm3 316L 1.0mm 7 Equivalent Float ≥0.82g/cm3 316L 1.0mm


8 Equivalent Float ≥0.55g/cm3 316L 0.5mm T1 Interface ≥0.1g/cm3 316L 1.0mm T2 Interface ≥0.1g/cm3 Ti 1.0mm T9 Special Float

Pressure rating

040 4.0MPa 064 6.4 MPa 100 10.0 MPa/600LBS ( For BM26G) 160 16.0MPa/900LBS(For BM26G) 250 25.0MPa/1500LBS(For BM26G) 320 32.0MPa(For BM26G)

Process

connection

F Flange S1 Female thread S2 Male thread H Welded

Vent

M plug cock M20x1.5(standard) N plug cock NPT 1/2"(BM26G standard) V Ball valve(DN15,NPT 1/2") F Flange DN15 SD Special vent

Drain

M plug cock M20*1.5 (standard) N plug cock NPT 1/2"(BM26G standard) V Ball valve(DN15,NPT 1/2") F Flange DN15 SD Special drain

Cable entry M1 M20x1.5 Female thread G1 G1/2” Female thread N1 NPT1/2” Female thread

Certificate

0 without R1 Material certificate R2 Pressure test certificate R3 Inspection records R5 X-ray inspection report R6 PMl detection report R7 Nuclear power user files R9 Other

BM26A/G

bypass level indicator - rehe-krohne.com · 2 1. description the bm 26a/bm26b/bm26g is a simple,...

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