Guided Microwave Level Transmitter Model MICROTREK (Nivelco)
General Description
The MicroTREK Guided Wave Radar level transmitter is designed for continuous level
measuring of conductive or non-conductive liquids, pulps and solids. MicroTREK level gauge
operates based on the well-known TDR (Time Domain Reflectometry) principle. Micropulses are
sent along a probe guide at the speed of light. As soon as the impulse reaches the surface of
the medium, it is reflected back to the electronic module. Level distance is directly proportional
to the flight time of the impulse.
The reflected signal is dependent on the dielectric constant of the material, the feasibility of
the measurement is er ≥ 1.4.
The TDR technology is unaffected by the properties of the medium as well as that of the space
above it. Measurement is also unaffected by the change in the physical properties of the
materials such as temperature, pressure, dielectric constant.
Main Features
- Measuring range up to 24 m (80 feet)
- Accuracy: ±5 mm (0.2 inch)
- Measurement is independent of dielectric constant,
temperature, pressure and density variations - Rod, segmented rod, cable and coaxial probe version
- Minimum er ≥ 1.4
- 2-wire version
- Graphic display
- 4 – 20 mA + HART® output
- Medium temperature range: -30 °C … +200 °C (-22 °F … +392 °F)
- Maximum process pressure: 40 bar (580 psig)
- IP67 protection
Certifications
- ATEX (Ex ia)
- ATEX (Ex iaD)
- ATEX (Dust Ex)
- IEC (Ex ia)
- IEC (Ex iaD)
