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TDR Füllstandssensor mit 3G Anbindung und kostenlosem Webportal - KFA4

Artikelnummer des Herstellers: 653341547828
The KFA4 sensor is based on an established and reliable TDR level measurement platform. An embedded cellular modem and an external antenna connects the device to our Azure IoT platform. The device does not require an external power supply as it is fully powered by integrated standard AA batteries. KFA4 can be fully analyzed and configured remotely.
€980,00 inkl. MwSt
*

Bitte geben Sie die Art der zu messenden Flüssigkeit an, 
z.B. Heizöl, Wasser, etc.

*

Bitte geben Sie die Distanz zwischen Prozessanschluss und Tankboden in cm an

Bitte geben Sie den Sondentyp an: Stab, Seil oder Koaxialrohr.

Bitte beachten Sie, dass ab 3m Tankhöhe eine Seilvariante zwingend ist

+ -

KFA4 : The next generation of level measurement 

 Remote level monitoring solution with 3G and battery

 

 

MEASUREMENT PRINCIPLE

KFA4 is a TDR-Sensor with single rod, rope or coaxial rod for continuous level measurement in oil.

What is the TDR (Time Domain Reflectometry) technology? Low-energy, high-frequency electromagnetic impulses, generated by the sensor’s circuitry, are propagated along the probe which is immerged in the liquid or solid to be measured. When these impulses hit the surface of the media, part of the impulse energy is reflected back up the probe to the circuitry which then calculates the level from the time difference between the impulses sent and the impulses reflected. The sensor can output the analysed level as a continuous measurement reading. TDR-Sensors are also known as Guided Radars or Guided Wave Radars (GWR)

 

APPLICATION AREA

The KFA4 sensor is designed for rugged outdoor applications in remote locations and features a sealed aluminium housing that also contains standard batteries to power the device as well as the TDR sensor. In addition, the system has a very low energy consumption, which allows for extended periods of time without service or battery replacement.

The innovative TDR technology enables direct, precise and highly reliable continuous level measurement and level detection in almost every liquid – independent of changes in the process conditions (such as density, conductivity, temperature, pressure, vapour and turbulence). KFA4 has almost no installation restrictions - it can be mounted in small tanks, tall and narrow nozzles and it measures precisely even with difficult tank geometries or close to interfering structures. It is suitable for all types of process and storage tank applications and has an exceptional performance in media with low dielectric constant (i.e. low reflectivity) such as oils and hydrocarbons.

BENEFITS

  •          Unmatched price/performance ratio
  •          Precise continuous level measurement
  •          Fully modular probe design, i.e. the probe types are interchangeable without any special tools or welding
  •          Complete galvanic insulation of device electronics from its inputs/outputs and the tank potential (no problems with electrochemical corrosion protection)
  •          Highly robust measurement due to 4-wire design and innovative signal analysis and disturbance signal suppression

 

SENSOR COMPONENTS + PROBE TYPE 

KFA4 consists of three major components: Housing, Feedthrough, and Probe. The only components that are exposed to the atmosphere inside the tank are probe and the part of the feedthrough below the hexagon. The housing contains the sensor’s electronics and has no contact to the tank atmosphere. The so called feedthrough is mounted into the bottom of the housing and serves two main purposes: its outer threaded metal bushing securely connects the sensor to the tank and its inner components guide the highfrequency measurement signal from the electronics through the tank wall into the tank and back. The probe is mounted onto the bottom of the feedthrough and gets immerged into the media inside the tank; the high-frequency measurement signal is propagated along the probe.

 

PROBE LENGTH AND MEASURING RANGE

The reference point for definition of the probe length [L] is always the shoulder of the connection thread. The probe length [L] is an important mechanical dimension which is needed to make sure the probe physically fits into the tank at the anticipated mounting location; it is not equal to the actual measuring range [M] of the sensor!

TDR level sensors have small inactive areas at top [I1] and bottom [I2] of the probe. Those are due to the presence of unavoidable signal disturbances at both ends of the probe. In these inactive areas the measurements are non-linear or have reduced accuracy. Therefore, it is not recommended to actually measure level within those inactive areas. Their length depends on the probe type and the reflectivity (i.e. dielectric constant) of the liquid to be measured.

The measuring range [M] of KFA4 extends between the top and bottom inactive areas of the probe; this is the area in which KFA2 will have the specified measurement performance. It is recommended that the maximum and minimum levels to be measured in the tank are actually within the measuring range [M] of the sensor. The span between the lower range value [4mA] and the upper range value [20mA] of the analog current output is equal to 0...100% of your continuous level measurement reading. It is recommended that the span between those two range values stays within the measuring range [M]

 

MOUNTING

KFA4 is mounted vertically to the tank via its connection thread, which is screwed directly into a standard threaded tank connection, i.e. weld-in socket, or it can be screwed into a flange, which is then connected to a tank nozzle. The customer has to ensure proper temperature and pressure ratings for his application and has to select the appropriate seal to connect the sensor (KFA4 comes with a Klingersil C-4400 gasket).

 

Remote level monitoring solution with 3G connectivity and battery power

The level measurement data taken by the sensor is then transmitted via mobile phone networks (various connectivity options for GSM or CDMA, 2G or 3G) to our web interface, where they are stored and visualized. The web application allows for remote analysis and configuration of the KFA4 sensor.

KFA4 : The next generation of level measurement 

 Remote level monitoring solution with 3G and battery

 

 

MEASUREMENT PRINCIPLE

KFA4 is a TDR-Sensor with single rod, rope or coaxial rod for continuous level measurement in oil.

What is the TDR (Time Domain Reflectometry) technology? Low-energy, high-frequency electromagnetic impulses, generated by the sensor’s circuitry, are propagated along the probe which is immerged in the liquid or solid to be measured. When these impulses hit the surface of the media, part of the impulse energy is reflected back up the probe to the circuitry which then calculates the level from the time difference between the impulses sent and the impulses reflected. The sensor can output the analysed level as a continuous measurement reading. TDR-Sensors are also known as Guided Radars or Guided Wave Radars (GWR)

 

APPLICATION AREA

The KFA4 sensor is designed for rugged outdoor applications in remote locations and features a sealed aluminium housing that also contains standard batteries to power the device as well as the TDR sensor. In addition, the system has a very low energy consumption, which allows for extended periods of time without service or battery replacement.

The innovative TDR technology enables direct, precise and highly reliable continuous level measurement and level detection in almost every liquid – independent of changes in the process conditions (such as density, conductivity, temperature, pressure, vapour and turbulence). KFA4 has almost no installation restrictions - it can be mounted in small tanks, tall and narrow nozzles and it measures precisely even with difficult tank geometries or close to interfering structures. It is suitable for all types of process and storage tank applications and has an exceptional performance in media with low dielectric constant (i.e. low reflectivity) such as oils and hydrocarbons.

BENEFITS

  •          Unmatched price/performance ratio
  •          Precise continuous level measurement
  •          Fully modular probe design, i.e. the probe types are interchangeable without any special tools or welding
  •          Complete galvanic insulation of device electronics from its inputs/outputs and the tank potential (no problems with electrochemical corrosion protection)
  •          Highly robust measurement due to 4-wire design and innovative signal analysis and disturbance signal suppression

 

SENSOR COMPONENTS + PROBE TYPE 

KFA4 consists of three major components: Housing, Feedthrough, and Probe. The only components that are exposed to the atmosphere inside the tank are probe and the part of the feedthrough below the hexagon. The housing contains the sensor’s electronics and has no contact to the tank atmosphere. The so called feedthrough is mounted into the bottom of the housing and serves two main purposes: its outer threaded metal bushing securely connects the sensor to the tank and its inner components guide the highfrequency measurement signal from the electronics through the tank wall into the tank and back. The probe is mounted onto the bottom of the feedthrough and gets immerged into the media inside the tank; the high-frequency measurement signal is propagated along the probe.

 

PROBE LENGTH AND MEASURING RANGE

The reference point for definition of the probe length [L] is always the shoulder of the connection thread. The probe length [L] is an important mechanical dimension which is needed to make sure the probe physically fits into the tank at the anticipated mounting location; it is not equal to the actual measuring range [M] of the sensor!

TDR level sensors have small inactive areas at top [I1] and bottom [I2] of the probe. Those are due to the presence of unavoidable signal disturbances at both ends of the probe. In these inactive areas the measurements are non-linear or have reduced accuracy. Therefore, it is not recommended to actually measure level within those inactive areas. Their length depends on the probe type and the reflectivity (i.e. dielectric constant) of the liquid to be measured.

The measuring range [M] of KFA4 extends between the top and bottom inactive areas of the probe; this is the area in which KFA2 will have the specified measurement performance. It is recommended that the maximum and minimum levels to be measured in the tank are actually within the measuring range [M] of the sensor. The span between the lower range value [4mA] and the upper range value [20mA] of the analog current output is equal to 0...100% of your continuous level measurement reading. It is recommended that the span between those two range values stays within the measuring range [M]

 

MOUNTING

KFA4 is mounted vertically to the tank via its connection thread, which is screwed directly into a standard threaded tank connection, i.e. weld-in socket, or it can be screwed into a flange, which is then connected to a tank nozzle. The customer has to ensure proper temperature and pressure ratings for his application and has to select the appropriate seal to connect the sensor (KFA4 comes with a Klingersil C-4400 gasket).

 

Remote level monitoring solution with 3G connectivity and battery power

The level measurement data taken by the sensor is then transmitted via mobile phone networks (various connectivity options for GSM or CDMA, 2G or 3G) to our web interface, where they are stored and visualized. The web application allows for remote analysis and configuration of the KFA4 sensor.