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Sistema de medición de nivel por micropulso guiado

Guided Micropulse devices are used to measure levels and interfaces of liquids, granular materials and powders.
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SISTEMA DE MEDICION DE NIVEL POR MICROPULSO GUIADO

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APLICACION MODELO TECNOLOGIA MARCA
Nivel PulsFox® PMG 01 - Afriso
FUNCION (Sistema) CODIGO SECCION
Sistema de medición de nivel por micropulso guiado. 02-5001 02

Guided micropulse level measuring systems PulsFox® Technical information/product selection.

Principle of operation

PulsFox® PMG 01 level measuring systems operate on the basis of the TDR principle (time domain reflectometry). This principle uses a probe as a micropulse guide.
Electromagnetic pulses are emitted at the speed of light, reflected by the surface of the medium to be measured and received by the signal converter.
Since the speed of light is constant and independent of the gas composition in the tank, the PMG devices do not require commissioning.
The units do not have any moving parts, thus being almost maintenance- free. Changes of the medium do not affect the measuring accuracy of the TDR principle.
The pulse´s propagation time is directly proportional to the distance between the probe and the surface of the medium.

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Applications
Guided Micropulse devices are used to measure levels and interfaces of liquids, granular materials and powders.

Features 

  • The measurement is unaffected by changes in dielectric constant, pressure, temperature or density.
  • Foam, steam, dust or a turbulent surface of the medium do not affect the accuracy of the measurement.
  • No recalibration is required when a different medium is used.
  • A great number of different materials and process connections are available and render the system suitable for use with corrosive media or, for example, in the food industry.

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Guided micropulse level measuring system PulsFox®PMG 01.

Application
For continuous level measurement in containers, tanks or silos. Suitable for electrically conducting or non-conducting liquids and bulk materials. Also suitable for pressurised or vacuum tanks.

Description

PulsFox® level measuring systems operate on the basis of the TDR principle (time domain reflectometry). The measurement is unaffected by changes in dielectric constant, pressure, temperature or density. Foam, steam, dust or a turbulent surface of the medium do not affect the accuracy of the measurement. No recalibration is required when a different medium is used.
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Technical specifications


Measuring range
B/E probe under 24 m
C probe under 6 m
F probe under 3 m

Accuracy of measurement
Liquids:
L under 15 m: ±5 mm
L over 15 m: ±0.05 % of measured value
Powders/granular materials:
L under 15 m: ±20 mm
L over 15 m: ±0.05 % of measured value

Dielectric constant (ε r)
Monoprobe over 2.3
Dual probe over 1.8
Coax probe over 1.5

Operating temperature range
Medium: -30 °C/+200 °C
Flange: -30 °C/ +90 °C
Ambient: -30 °C/ +60 °C (Ex version -30 °C/ +55 °C)

Process pressure 40 bar
Process connection G1B (for PMG 01 DF = G11/2B)

Probe type/probe material
F = rigid monoprobe Stainless steel 1.4571
B / E = 1-2 flexible probe(s): Stainless steel 1.4401 (Ø 4 mm)
C = coax probe: Stainless steel 1.4571

Wetted parts: Stainless steel 1.4571/1.4401, PTFE, FPM
Supply voltage DC 18–35 V Ex version under DC 28 V
Output signal 4–20 mA/HART, 2-wire
Housing Aluminium die cast
Protection IP 65 (EN 60529)
Electrical connection Plug DIN 43650-A (IP 65)
CE conformity (EMC) EN 50082-2, EN 50081-1
Accessories Operating and configuration software

Options

  • Ex versions
  • Other process connections
  • Higher pressures
  • Other probe diameters
  • Higher flange temperatures
  • FEP coatings
  • Other seal materials
  • Digital plug-in displays

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