KROHNE BM 26 BASIC/ADVANCED

 VF4140101101FF11010000000032- (Stainless Steel Bypass Level Indicators for applications
up to 40 bar / 580 psi)

The KROHNE BM 26 BASIC works on the principle of communicating vessels, using a magnetically coupled float inside a bypass chamber to indicate the liquid level in an adjacent tank. As the liquid level in the tank changes, a float inside the chamber rises or falls with it, moving a magnetic follower or rotating magnetic flaps in a transparent glass tube outside the chamber to provide a visual, local level indication without requiring power.

How it Works

1. Bypass chamber: The BM 26 is installed next to a tank, connected via two nozzles to create a bypass chamber. The liquid level in this chamber is the same as in the main tank.
2. Magnetic float: A float with a permanent magnet is placed inside the bypass chamber. As the liquid level in the tank changes, the float rises or falls with it.
3. Indicator: Adjacent to the bypass chamber, a display tube contains a column of magnetic flaps or a magnetic follower (bar indicator).
4. Magnetic coupling: The magnet inside the float magnetically couples with the indicator, causing it to rotate or move in sync with the float.
5. Visual indication: The flaps inside the tube turn from one color to another (e.g., yellow to black) to show the level, or the follower moves up and down the scale, providing a highly visible and reliable local level reading.

Key features

• No power required for local display: The basic model provides a local, visual level indication that does not need a power supply.
• Optional electrical output: The device can be optionally equipped with electrical transmitters for remote monitoring or limit switches for high/low alarms.
• Rugged and safe design: It is suitable for harsh environments and can be used with aggressive, toxic, or flammable liquids, especially when options like a PTFE lining are used.
• Interface indication: The indicator can also be configured to show the interface level between two immiscible liquids.

 Full Datasheet

Transmitter & Antenna Feature  

• Manufacturer :  Krohne - BM 26
• Product No. :   VF4140101101FF11010000000032
• VF41  - BM 26 Basic Magnetic bypass level indicator: -40...+150°C and -16 bar max. / -40...300°F and 232 psi max.
• Special Number: 4 
• Material: 0 - 316
• Approval: 1  - ATEX
• Other approval: 0 - without
• Process temperature: 1 - -40...+150°C (-40...+300°F)
• Density [kg/l]/Float material: 1 - 0.8. 1.19 / 316L
• Orientation of process connections: 0 - Lateral / Lateral)
• Process connection type: 1 - Flange connection
• Process connection: F - ¾¨ 150LB
• Flange facing: F - Form RF (ASME B16.5)
• Vent: 1 - 3/8 NPT + plug
• Drain: 1 - 3/8 NPT + plug
• Sealing: 0   - Without
• Indicator / scale 1 - Flaps / without scale
• Transmitter/Converter position: 0 - without
• Transmitter approval: 0 - Without
• Number of limit switches: 0 - Without
• Limit switch approval: 0 - without 
• Special Number: 00 
• Certificate for calibration: 0 - without
• Tag number: 0 - without 
• C-C length: 3 - 3m
• C-C length: 2 - 200 mm

There are several Model of visual level, for more details read the PDF below 

Basic Ordering Information 

Krohne Radar level transmitters / OPTIFLEX 8200 C/F

VFAC401110211610K10H1A006 - (level transmitter for liquids at high
temperature and pressure)

The OPTIFLEX 8200 works by using Time Domain Reflectometry (TDR) to emit low-intensity electromagnetic pulses along a probe, which are reflected by the product surface. By measuring the transit time of the pulses and using an algorithm called Dynamic Gas-phase Compensation (GDC), the device determines the liquid level or interface with high accuracy, even under extreme conditions like high pressure, temperature, and changing gas compositions.

How it Works

1. Pulse Emission: A low-intensity electromagnetic (EM) pulse is transmitted by the device's converter.
2. Pulse Propagation: The pulse travels along a rigid or flexible probe (single rod or cable) at the speed of light.
3. Reflection: When the pulse hits the material's surface, it is reflected back to the transmitter.
4. Time Measurement: The device measures the time interval from when the pulse is transmitted to when it is received.
5. Distance Calculation: Half of this elapsed time is converted into the distance from the device's reference point to the material's surface.
6. Signal Output: This distance value is then converted into a standard output signal, such as a 4...20 mA current or a digital signal.

Key Features & Benefits

• TDR Technology: This guided radar technology is reliable and accurate for level measurement.
• Robust Probes: The single rod or cable probes are strong and can withstand high traction loads, making them ideal for solids in silos.
• Versatile Applications: The OPTIFLEX 6200 is suitable for various materials, including powders like cement and starch, as well as solids like plastic granulates, tobacco, and coffee powder.
• Insensitive to Environmental Factors: Its performance is not affected by dust, foam, vapor, agitation, or changes in pressure, temperature, or density.

 Full Datasheet

Transmitter & Antenna Feature  

• Manufacturer :  Krohne - OPTIFLEX 8200
• Product No. :   VFAC401110211610K10H1A006
• VFAC  - OPTIFLEX 8200 C/F/S Guided Radar (TDR) level transmitter for liquids at high temperature and pressure up to 320 barg (4641 psig) and +315°C (+599°F)
• Special number : 40  Special manufacture
• Regional directives or approvals: 1  - Europe
• Ex approval: 1 - ATEX II 1/2 G Ex ia IIC T6…T* Ga/Gb + II 1/2 D Ex ia IIIC T85°C…T*°C Da/Db 2
• Industry / safety: 1 - SIL2/3 – only available for the compact version (C)
• Construction : 0 - Without
• Converter version (Housing material / IP class): 2 - C / Compact version (aluminium housing - IP66/IP68)
• Outputs: 1 - 2-wire / 4...20 mA passive HART®
• Cable entry / cable gland: 1 - M20×1.5 / without
• Display / Housing orientation: 6 - Display / Horizontal side
• Display - Documentation language: 1 - English 
• Enhanced functions: 0 - Without
• Process seal / gaskets: K   -1...320 barg (-14.5.....4641 psig) / -40°C...+200°C (-40…+392°F) / Single ceramic process seal system with FKM/FPM gasket
• Probe / Probe end / Material 1 - Single rod Ø8 mm (0.32¨) / none / 316L - 1.4404 / 0.6...4 m (1.97. 13.12 ft)
• Sensor extensions: 0 - without
• Process connection : Size / Pressure class / Sealing face: H1A - 2¨ 150 lb - RF
• Calibration certificate: 0 - Without (accuracy ±2 mm (0.08¨) up to 10 m (32.81 ft))
• Options: 0 - without 
• Accessories / Tag plate: 6 - Weather protection + stainless steel tag plate (18 characters max.)

There are several Model of pressure transmitters, for more details read the PDF below 

Basic Ordering Information Transmitter

Krohne Radar level transmitters / OPTIFLEX 6200 C/F

VFAB401110211610310L1A006 - (level transmitter for solids from granulates to powders)

The OPTIFLEX 6200 uses Time Domain Reflectometry (TDR), a guided radar technology, to measure the level of solids by emitting low-intensity electromagnetic pulses down a probe. These pulses reflect off the surface of the material, and the device measures the travel time of the reflected pulse to calculate the distance to the material's surface. This method is suitable for various solids, including powders, granulates, and liquids, and is unaffected by dust, foam, vapor, or changes in pressure, temperature, or density.

How it Works

1. Pulse Emission: A low-intensity electromagnetic (EM) pulse is transmitted by the device's converter.
2. Pulse Propagation: The pulse travels along a rigid or flexible probe (single rod or cable) at the speed of light.
3. Reflection: When the pulse hits the material's surface, it is reflected back to the transmitter.
4. Time Measurement: The device measures the time interval from when the pulse is transmitted to when it is received.
5. Distance Calculation: Half of this elapsed time is converted into the distance from the device's reference point to the material's surface.
6. Signal Output: This distance value is then converted into a standard output signal, such as a 4...20 mA current or a digital signal.

Key Features & Benefits

• TDR Technology: This guided radar technology is reliable and accurate for level measurement.
• Robust Probes: The single rod or cable probes are strong and can withstand high traction loads, making them ideal for solids in silos.
• Versatile Applications: The OPTIFLEX 6200 is suitable for various materials, including powders like cement and starch, as well as solids like plastic granulates, tobacco, and coffee powder.
• Insensitive to Environmental Factors: Its performance is not affected by dust, foam, vapor, agitation, or changes in pressure, temperature, or density.

 Full Datasheet

Transmitter & Antenna Feature  

• Manufacturer :  Krohne - OPTIFLEX 6200
• Product No. :   VFAB401110211610310L1A006
• VFAB  - OPTIFLEX 6200 C/F Guided Radar (TDR) level transmitter for solids from granulates to powders up to 40 barg (580 psig) and +200°C (+392°F)
• Special number : 40  Special manufacture
• Regional directives or approvals: 1  - Europe
• Ex approval: 1 - ATEX II 1/2 G Ex ia IIC T6…T* Ga/Gb + II 1/2 D Ex ia IIIC T85°C…T*°C Da/Db 2
• Industry / safety: 1 - SIL2/3 – only available for the compact version (C)
• Construction : 0 - Without
• Converter version (Housing material / IP class): 2 - C / Compact version (aluminium housing - IP66/IP68)
• Outputs: 1 - 2-wire / 4...20 mA passive HART®
• Cable entry / cable gland: 1 - M20×1.5 / without
• Display / Housing orientation: 6 - Display / Horizontal side
• Display - Documentation language: 1 - English 
• Special number : 0  Special manufacture
• Process seal / gaskets: 3  --1...40 barg (-14.5…580 psig) / -50°C...+150°C (-58…+302°F) / Single PTFE process seal system seal with EPDM gasket
• Probe / Probe end / Material: 1 - Single rod Ø16 mm (0.63¨) / none / 316L - 1.4404 / 0.6...4 m (1.97. 13.12 ft)
• Special number : 0
• Process connection : Size / Pressure class / Sealing face: L1A - 3¨ 150 lb - RF (ASME B16.5 flanges ①O)
• Calibration certificate: 0 - Without (accuracy ±2 mm (0.08¨) up to 10 m (32.81 ft))
• Special number : 0
• Accessories / Tag plate: 6 - Weather protection + stainless steel tag plate (18 characters max.)

There are several Model of pressure transmitters, for more details read the PDF below 

Basic Ordering Information Transmitter

Krohne Radar level transmitters / OPTIFLEX 3200 C/F

 VFAD401110211610410GFT006 - (level transmitter for liquids with
hygienic requirements)

The KROHNE OPTIFLEX 3200 uses Time Domain Reflectometry (TDR) to measure liquid level and interface in hygienic applications. It transmits electromagnetic pulses along a probe, which are reflected by the liquid surface. The device measures the time it takes for the pulse to travel to the liquid and return, using this transit time to calculate the distance to the product surface. The reflected signal's intensity varies with the liquid's dielectric constant, allowing for the measurement of the interface between different liquids.

Working Principle Steps

1. Pulse Transmission: The device sends low-intensity electromagnetic pulses along a guided probe.
2. Pulse Guidance: These pulses travel at the speed of light along the rigid or flexible conductor of the probe.
3. Pulse Reflection: When a pulse reaches the liquid's surface, it is reflected back. The intensity of the reflection depends on the liquid's dielectric constant. A high dielectric constant, like water's, results in a stronger reflection.
4. Time Measurement: The device measures the time elapsed from when the pulse is transmitted to when the reflected pulse is received.
5. Distance Calculation: Half of this transit time is equivalent to the distance from the device's probe to the liquid's surface.
6. Level Conversion: This measured time value is then converted into a current output, such as a 4…20 mA signal, representing the liquid's level.

Key Features & Benefits

• Hygienic Design: The OPTIFLEX 3200 is designed for the food, beverage, and pharmaceutical industries, featuring a gap-free hygienic design suitable for CIP (Cleaning In Place) and SIP (Sterilization In Place).
• Interface Measurement: It is capable of measuring interfaces between different liquids, even in small tanks.
• Insensitivity to Conditions: The TDR technology makes it insensitive to steam, foam, and condensation, ensuring reliable performance in various conditions.

 Full Datasheet

Transmitter & Antenna Feature  

• Manufacturer :  Krohne - OPTIFLEX 3200
• Product No. :   VFAD401110211610410GFT006
• VFAD  - OPTIFLEX 3200 C/F Guided Radar (TDR) level transmitter for liquids with hygienic requirements up to 40 barg (580 psig) and +150°C (+302°F)
• Special number : 40  Special manufacture
• Regional directives or approvals: 1  - Europe
• Ex approval: 1 - ATEX II 1/2 G Ex ia IIC T6…T* Ga/Gb + II 1/2 D Ex ia IIIC T85°C…T*°C Da/Db 2
• Industry / safety: 1 - SIL2/3 – only available for the compact version (C)
• Special number : 0
• Converter version (Housing material / IP class): 2 - C / Compact version (aluminium housing - IP66/IP68)
• Outputs: 1 - 2-wire / 4...20 mA passive HART®
• Cable entry / cable gland: 1 - M20×1.5 / without
• Display / Housing orientation: 6 - Display / Horizontal side
• Display - Documentation language: 1 - English 
• Enhanced functions: 0 - Without
• Process conditions /Process seal: 4 - -1…40 barg (-14.5…580 psig) / -50°C...+150°C (-58°F…+302°F) /
  Fully TFM-T62 PTFE-coated
• Probe / Probe end / Material: 1 - Single rod - Ø8 mm (0.32¨) Ra≤0.76 μm / none / 316L - 1.4404 / 0.6...4 m (1.97. 13.12 ft)
• Special number : 0
• Process connection : Size / Pressure class / Sealing face: GFT - DN40 DIN 11851①4)
• Calibration certificate: 0 - Without (accuracy ±2 mm (0.08¨) up to 10 m (32.81 ft))
• Special number : 0
• Accessories / Tag plate: 6 - Weather protection + stainless steel tag plate (18 characters max.)

There are several Model of pressure transmitters, for more details read the PDF below 

Basic Ordering Information Transmitter

Krohne Radar level transmitters / OPTIFLEX 7200 C

 SFA901100312410MN0HH1000 - (level transmitter for liquids in storage and process applications)

The OPTIFLEX 7200 works using Time Domain Reflectometry (TDR) (guided radar) technology, which sends low-intensity electromagnetic pulses down a probe and measures the time it takes for them to reflect off the liquid's surface. The measured time is converted into a continuous level measurement, providing accurate readings for various liquids in demanding industrial applications like the chemical and oil & gas industries, even with conditions such as steam, foam, or changing pressures.

How it Works

1. Pulse Emission: A low-intensity electromagnetic pulse is sent along the device's rigid or flexible probe.
   Reflection: When the pulse reaches the surface of the liquid, it is reflected back towards the device. The intensity of the reflection depends on the liquid's dielectric constant.
2. Time Measurement: The device precisely measures the time between the transmission of the pulse and its return.
3. Distance Calculation: Since the pulse travels at the speed of light, half of this measured time is equivalent to the distance from the probe's reference point (the flange) to the liquid surface.
4. Signal Conversion: This time value is then converted into a 4-20 mA current output or other digital signals for the control system.

Key Features and Benefits

• TDR Technology: Utilizes guided radar for accurate and reliable measurement.
• Wide Application: Suitable for liquids with diverse dielectric properties, including hydrocarbons, acids, and cooling water.
• Harsh Environment Capabilities: Handles difficult conditions like steam, foam, agitated surfaces, and changing pressure/temperature.
• Dynamic Gas-phase Compensation (DGC): Features patented technology for accurate measurements even when the gas composition above the liquid changes rapidly.
• Versatile Probe Options: Offers a wide choice of probe types and materials to suit various process requirements and corrosive media.
• Hazardous Area Approvals: Designed with approvals for use in potentially explosive environments.

 Full Datasheet

Transmitter & Antenna Feature  

• Manufacturer :  Krohne - OPTIFLEX 7200
• Product No. :   SFAA901100312410MN0HH1000
• SFAA  - OPTIFLEX 7200 C/F/S/D TDR Guided Radar l(TDR) level transmitter for liquids in storage and process
  applications up to 100 barg (1450 psig) and +250°C (+482°F)
• Special number : 90  Special manufacture
• Regional directives or approvals: 1  - Europe
• Ex approval: 1 - ATEX II 1/2 G Ex ia IIC T6…T* Ga/Gb + II 1/2 D Ex ia IIIC T85°C…T*°C Da/Db 2
• Industry / safety: 0 - Without
• Construction: 0  - Without
• Converter version (Housing material / IP class): 3 - SC / Compact version (stainless steel housing - IP66/IP68)
• Outputs: 1 - 2-wire / 4...20 mA passive HART®
• Cable entry / cable gland: 2 - M20×1.5 / 1 × plastic + plug Ⓐ
• Display / Housing orientation: 4 - Display / Vertical top
• Display - Documentation language: 1 - English ①O
• Enhanced functions: 0 - Without
• Process seal / gaskets: M - 1...100 barg (-14.5…1450 psig) / -50°C...+150°C (-58…+302°F) / Single ceramic process seal system with EPDM gasket
• Probe / Probe end / Material: N - Coaxial Ø22 mm (0.87¨) / none / HASTELLOY® C-22® / 0.3...6 m (0.98…19.69 ft)
• Sensor extensions ("S" and "D" converter versions only): 0 - Without
• Process connection : Size / Pressure class / Sealing face: HH1 - DN50 PN63 - Type B1 ①2 (EN 1092-1 flanges ①4)
• Calibration certificate: 0 - Without (accuracy ±2 mm (0.08¨) up to 10 m (32.81 ft))
• Options: 0 - Without
• Accessories / Tag plate: 0 - Without

There are several Model of pressure transmitters, for more details read the PDF below 

Basic Ordering Information Transmitter