The MicroTREK guided microwave 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 pulse 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 pulse. The reflected signal is dependent on the dielectric constant of the material, the feasibility of the measurement is εr 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.
Operating Principle:
Guided MicrowaveFeatures:
- Two-wire TDR Technology
- Digital communication
- High accuracy: ±0.2 or ±0.75 inch
- High pressure range
- High temperature range
- Extremely low dead band
- Large Dot-Matrix graphic display
- Local programming feature
- Text-based menu system
- Plastic coated stainless steel probes (PFA, FEP, PP),
- Aluminium and plastic housing
- Wide range of probes
- Explosion-proof models
Application:
- Level, volume measurement
- Liquids, powders and granular mediums with Er>1.4
- Medium with turbulent surface, dense dust, vapour or pressurized gas layers above the product surface
- For all tank shapes, for narrow vessels
- Heavy industrial applications
Specification:
- Power supply: 18-35 V DC
- Accuracy: ±0.2 or ±0.75 inch
- Ambient temperature: -22 °F…+ 140 °F
- Medium temperature: -22 °F…+ 392 °F
- Pressure: max. 580 psig
- Measuring range: up to 78 feet
- Output: 4-20mA, loop powered
- Communication: HART
- Process connection: 1” 1 1/2” or flanges
- Ingress Protection:IP 65
- ATEX approval: II 1 G Ex ia IIC T6…T3 II 1 G Ex ia IIB T6…T3 II 1D iaD A20/A21 IP65 T100°C
