26G High Frequency Radar Level Meter For Solid Material 80 Meters
Range
1. Introduction
This series of radar level meter adopted 26G high frequency radar
sensor, the maximum measurement range can reach up to 80 meters.
Antenna is optimized further processing, the new fast
microprocessors have higher speed and efficiency can be done signal
analysis, the instrumentation can be used for reactor, solid silo
and very complex measurement environment.
2. Principle
Radar level transmitter antenna microwave pulse is narrow, the
downward transmission antenna. Microwave exposure to the medium
surface is reflected back again by the antenna system receives,
sends the signal to the electronic circuit automatically converted
into level signals (because the microwave propagation speed,
electromagnetic wave to reach the target and the reflected back to
the receiver this time is almost instantaneous)
A Range set B Low adjustment C High D Blind area
Technical Specification and Model Selections:
Application:Solid material, Strong dust, easy to crystallize,
condensation occasion
Measuring Range:80 meters
Process Connection:Universal Flange
Medium Temperature: -40℃ ~ 250℃
Process Pressure:-0.1 ~ 0.1MPa
Accuracy: ±15mm
Protection Grade:IP67
Frequency Range:26GHz
Signal Output:4... 20mA/HART (Two-wire / Four) RS485/ Modbus
Explosion-proof Grade:Exia ⅡC T6 Ga/ Exd ia IIC T6 Gb
Datum measurement:Screw thread bottom or the sealing surface of the flange
Note: Make sure the radar level meter the highest level cannot enter the
measuring blind area (Figure D shown below)
The characteristics of 26G radar level meter:
Small antenna size, easy to install; Non-contact radar, no wear, no
pollution.
Almost no corrosion, bubble effect; almost not affected by water
vapor in the atmosphere, the temperature and pressure changes.
Serious dust environment on the high level meter work has little
effect.
A shorter wavelength, the reflection of solid surface inclination
is better.
Beam angle is small, the energy is concentrated, can enhance the
ability of echo and to avoid interference.
The measuring range is smaller, for a measurement will yield good
results.
High signal-to-noise ratio, the level fluctuation state can obtain
better performance.
High frequency, measurement of solid and low dielectric constant of
the best choice.
The Electrical Connection
The power supply voltage:
(4~20)mA/HART (Two wire system)
The power supply and the output current signal sharing a two core
shield cable. The supply voltage range see technical data. For
intrinsically safe type must be a safety barrier between the power
supply and the instrument.
(4~20)mA/HART(Four wire system)
Separate power supply and the current signal, respectively using a
two-core shielded cable. The supply voltage range see technical
data.
RS485 / Modbus
Power supply and Modbus signal line separate drespectively using a
two-core shielded cable, the power supply voltage range see
technical data.
3. Appearance size:
Connection mode
24V two wire wiring diagram as follows:
220V four wire connection is as below:
