North Falcon magnetostrictive level probes

North Falcon magnetostrictive level probes (wired and wireless level probes) are intended for continuous measurement of petroleum products levels (fuel and LPG), produced water level and temperature in tanks at petrol stations, tank farms and refineries.

North Falcon magnetostrictive level gauges
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The magnetostrictive level transmitters are based on the principle named Wiedemann effect and enable continuous and highly accurate reading of liquid’s level. The XMT-SI level transmitter consists of a microprocessor based electronic circuit placed inside one aluminium case head and a stainless steel shaft containing a wave guide placed inside the tank. An high frequence electric impulse is transmitted through the electronic device. In the matching point with the magnetic field generated by the permanent magnet placed inside the float, a mechanic impulse is generated thanks to the magnetostrictive torsional strain. The mechanic impulse spreads through the wave guide to the speed of sound up to the sensor placed in the measuring head. The timing between the transmission of the going impulse and the return impulse exactly defines the position of the floats.

North Falcon NF ExD

Wired magnetostrictive level explosion-proof gauge


North Falcon NF ExD wired magnetostrictive level gauge

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  • The magnetostrictive level probe bases his physical phenomena on the Wiedemann effect. The main features are:
    • Very high accuracy and repeatability
    • Reliability and robustness
    • Sharp leakage control
    • Full stainless steel execution
    • Ultra compact design
  • Commonly used in the fuel level control, it allows the measure of the three essential parameters:
    • Fuel level
    • Water level on the bottom of the tank
    • Fuel temperature
  • The magnetostrictive sensor measures with an high resolution of 0,01 mm and a final accuracy of 0,25 mm on the full scale range (Plus version only).
  • Measuring length of the NF rigid pipe, range from 0,4 m up to 5,5 m
  • Measuring length of the NF flexible pipe, range from 5,5 m up to 15 m
  • Aluminum pressure die casting enclosure IP 68 degree protection up to 1 m. water submersion max. 24h.
  • 2 m fuel resistant cable type CEI EN 50363 – ENI 001.181.00
  • Power supply 12 – 30 VDC
  • RS485 serial port communication
  • Product Level / mm
  • Interface Level / mm (water presence detection)
  • Product average temperature up to max. 5 temp. sensors
  • Temperature accuracy in range -20 ÷ +50 °C: ± 0,2 °C

Standard Version:

  • Measuring probe accuracy: ± 0,5 mm
  • Real probe resolution: ± 0,05 mm

Plus Version:

  • Measuring probe accuracy: ± 0,05 mm
  • Real probe resolution: ± 0,01 mm


North Falcon NF ExD/SS

Wired magnetostrictive explosion-proof level gauge


North Falcon NF ExD/SS wired magnetostrictive level gauge

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  • The magnetostrictive level probe bases his physical phenomena on the Wiedemann effect. The main features are:
    • Very high accuracy and repeatability
    • Reliability and robustness
    • Sharp leakage control
    • Full stainless steel execution
    • Ultra compact design
  • Commonly used in the fuel level control, it allows the measure of the three essential parameters:
    • Fuel level
    • Water level on the bottom of the tank
    • Fuel temperature
  • The magnetostrictive sensor measures with an high resolution of 0,01 mm and a final accuracy of 0,25 mm on the full scale range (Plus version only).
  • Measuring length of the NF rigid pipe, range from 0,4 m up to 5,5 m
  • Measuring length of the NF flexible pipe, range from 5,5 m up to 15 m
  • Stainless Steel AISI303 Ø 50 mm enclosure IP 68 degree protection up to 10 m. water submersion max. 24h.
  • Tank connection: threaded or flanged
  • Explosion proof construction, Exd brass nickel coated ½” NPT cable gland
  • Stainless steel pipe AISI 304 / 316 Ø 14.0 mm
  • N. 2 stainless steel AISI 316 / expanded NBR floats Ø 42 / 52 mm
  • 2 m fuel resistant cable type CEI EN 50363 – ENI 001.181.00
  • Power supply 12 – 30 VDC
  • RS485 serial port communication
  • Product Level / mm
  • Interface Level / mm (water presence detection)
  • Product average temperature up to max. 5 temp. sensors
  • Temperature accuracy in range -20 ÷ +50 °C: ± 0,2 °C

Standard Version:

  • Measuring probe accuracy: ± 0,5 mm
  • Real probe resolution: ± 0,05 mm

Plus Version:

  • Measuring probe accuracy: ± 0,05 mm
  • Real probe resolution: ± 0,01 mm


North Falcon NF RS

Wired magnetostrictive intrinsically safe level gauge


North Falcon NF RS wired magnetostrictive level gauge

Click on image to enlarge

  • The magnetostrictive level probe bases his physical phenomena on the Wiedemann effect. The main features are:
    • Very high accuracy and repeatability
    • Reliability and robustness
    • Sharp leakage control
    • Full stainless steel execution
    • Ultra compact design
  • Commonly used in the fuel level control, it allows the measure of the three essential parameters:
    • Fuel level
    • Water level on the bottom of the tank
    • Fuel temperature
  • The magnetostrictive sensor measures with an high resolution of 0,01 mm and a final accuracy of 0,25 mm on the full scale range (Plus version only).
  • Measuring length of the NF rigid pipe, range from 0,4 m up to 5,5 m
  • Measuring length of the NF flexible pipe, range from 5,5 m up to 15 m
  • Stainless steel enclosure AISI 304 – Ø 42/35 mm
  • IP 68 Protection up to 10 m/24h water submersion
  • Tank connection: in riser, threaded or flanged
  • Stainless steel pipe AISI 316 Ø 14.0 mm
  • N. 2 INOX AISI 316 / NBR floats Ø 42 / 52 mm
  • Intrinsically safe circuit to be connected to the passive barrier ISB
  • Circular connector M12 – 4 pin polarized
  • 2 m fuel resistant cable type CEI EN 50363 – ENI 001.181.00
  • Power supply 12 – 30 VDC
  • RS485 serial port communication
  • Product Level / mm
  • Interface Level / mm (water presence detection)
  • Product average temperature up to max. 5 temp. sensors
  • Temperature accuracy in range -20 ÷ +50 °C: ± 0,2 °C

Standard Version:

  • Measuring probe accuracy: ± 0,5 mm
  • Real probe resolution: ± 0,05 mm

Plus Version:

  • Measuring probe accuracy: ± 0,25 mm
  • Real probe resolution: ± 0,01 mm


North Falcon NF RTD

Wireless magnetostrictive explosion-proof level gauge


North Falcon NF RTD wireless magnetostrictive level gauge

Click on image to enlarge

  • The magnetostrictive level probe bases his physical phenomena on the Wiedemann effect. The main features are:
    • Very high accuracy and repeatability
    • Reliability and robustness
    • Sharp leakage control
    • Full stainless steel execution
    • Ultra compact design
  • Commonly used in the fuel level control, it allows the measure of the three essential parameters:
    • Fuel level
    • Water level on the bottom of the tank
    • Fuel temperature
  • The magnetostrictive sensor measures with an high resolution of 0,01 mm and a final accuracy of 0,25 mm on the full scale range (Plus version only).
  • Measuring length of the NF rigid pipe, range from 0,4 m up to 5,5 m
  • Measuring length of the NF flexible pipe, range from 5,5 m up to 15 m
  • Stainless steel AISI 305 and Delrin enclosure, external diameter Ø 42 mm
  • IP 68 Protection up to 10 m/24h water submersion
  • Tank connection: in riser, threaded or flanged
  • Stainless steel pipe AISI 304 / 316 Ø 14.0 mm
  • N. 2 INOX AISI 316 / NBR floats Ø 42 / 52 mm
  • Intrinsically safe construction for installation in classified 0 zone
  • Integrated battery and antenna
  • Power supply: intrinsically safe lithium battery
  • Product Level / mm
  • Interface Level / mm (water presence detection)
  • Product average temperature up to max. 5 temp. sensors
  • Measuring probe accuracy: ± 0,5 mm
  • Real probe resolution: ± 0,05 mm
  • Temperature accuracy in range -20 ÷ +50 °C: ± 0,2 °C


North Falcon NF 485FX

Flexible wired magnetostrictive intrinsically safe level gauge


North Falcon NF 485FX flexible wired magnetostrictive level gauge

Click on image to enlarge

  • The magnetostrictive level probe bases his physical phenomena on the Wiedemann effect. The main features are:
    • Very high accuracy and repeatability
    • Reliability and robustness
    • Sharp leakage control
    • Full stainless steel execution
    • Ultra compact design
  • Commonly used in the fuel level control, it allows the measure of the three essential parameters:
    • Fuel level
    • Water level on the bottom of the tank
    • Fuel temperature
  • The magnetostrictive sensor measures with an high resolution of 0,01 mm and a final accuracy of 0,25 mm on the full scale range (Plus version only).
  • Measuring length of the NF rigid pipe, range from 0,4 m up to 5,5 m
  • Measuring length of the NF flexible pipe, range from 5,5 m up to 15 m
  • Stainless steel enclosure AISI 304 – Ø 42/35 mm
  • IP 68 Protection up to 10 m/24h water submersion
  • Tank connection: in riser, threaded or flanged
  • Stainless steel pipe AISI 316 Ø 14.0 mm
  • N. 2 INOX AISI 316 / NBR floats Ø 42 / 52 mm
  • Intrinsically safe circuit to be connected to the passive barrier ISB
  • Circular connector M12 – 4 pin polarized
  • 2 m fuel resistant cable type CEI EN 50363 – ENI 001.181.00
  • Power supply 12 – 30 VDC
  • RS485 serial port communication
  • Product Level / mm
  • Interface Level / mm (water presence detection)
  • Product average temperature up to max. 5 temp. sensors
  • Measuring probe accuracy: ± 1,0 mm
  • Real probe resolution: ± 0,05 mm
  • Repeatability: ± 0,2 mm
  • Temperature accuracy in range -20 ÷ +50 °C: ± 0,2 °C


North Falcon NF RTD-FX

Flexible wireless explosion-proof magnetostrictive level gauge


North Falcon NF RTD-FX flexible wireless magnetostrictive level gauge

Click on image to enlarge

  • The magnetostrictive level probe bases his physical phenomena on the Wiedemann effect. The main features are:
    • Very high accuracy and repeatability
    • Reliability and robustness
    • Sharp leakage control
    • Full stainless steel execution
    • Ultra compact design
  • Commonly used in the fuel level control, it allows the measure of the three essential parameters:
    • Fuel level
    • Water level on the bottom of the tank
    • Fuel temperature
  • The magnetostrictive sensor measures with an high resolution of 0,01 mm and a final accuracy of 0,25 mm on the full scale range (Plus version only).
  • Measuring length of the NF rigid pipe, range from 0,4 m up to 5,5 m
  • Measuring length of the NF flexible pipe, range from 5,5 m up to 15 m
  • Intrinsically safe construction 0 zone classified
  • Stainless steel AISI 305 and Delrin enclosure, external diameter Ø 42 mm
  • IP 68 Protection up to 10 m/24h water submersion
  • Tank connection: in riser, threaded or flanged
  • Stainless steel pipe AISI 304 / 316 Ø 14.0 mm
  • N. 2 INOX AISI 316 / NBR floats Ø 42 / 52 mm
  • Intrinsically safe construction for installation in classified 0 zone
  • Integrated battery and antenna
  • Power supply: intrinsically safe lithium battery
  • Product Level / mm
  • Interface Level / mm (water presence detection)
  • Product average temperature up to max. 5 temp. sensors
  • Measuring probe accuracy: ± 1,0 mm
  • Real probe resolution: ± 0,05 mm
  • Repeatability: ± 0,2 mm
  • Temperature accuracy in range -20 ÷ +50 °C: ± 0,2 °C


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