ContactGuided Wave Radar
The MicroTREK guided microwave level transmitter is designed for continuous level measuring of conductive or nonconductive liquids, pulps and solids.
MicroTREK level gauge operates based on the well known TDR (Time DomainReflectometry) 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.
- General Specifications
|Power Supply||18 to 35 V (Ex 28 V)|
|Ambient Temperature||-30 to 60 C|
|Medium Temperature||-30 to 200 C flange temp|
|Process Pressure||Max 40 bar|
|Measuring Range||max. 24 m|
|Accuracy||± 5 mm, ± 15 mm|
|Output||4 to 20 mA/HART|
|Ex marking||Ex II 1 G EEx ia IIC T6 to T3; II 1 G EEx ia IIB T6 to T3; II 1 D iaD A20/A21 IP65 T100 degree|