High Accuracy Guided Wave Radar Level Meter Medium Contacting Type Suitable For Dielectric Constant
High Temperature And High Pressure Resistance Guided Wave Radar Level Meter Operating Principle
The high frequency microwave pulse sent by the guided wave radar
transmits along the detection component (steel cable or steel rod).
When the wave encounters the measured medium, due to the sudden
change of the dielectric constant, some of the wave pulse will be
reflected immediately back to transmitter. The time interval
between the transmitted pulse and the reflected pulse is
proportional to the distance of the measured medium.
input
Guided wave radar is a measuring instrument based on the principle
of time travel. The radar wave runs at the speed of light, and the
running time can be converted into a level signal through
electronic components. The probe sends out high-frequency pulse and
propagates along the cable or rod probe. When the pulse meets the
material surface, it is reflected back and received by the receiver
in the instrument, and the distance signal is converted into the
material level signal.
The reflected pulse signal is transmitted to the electronic circuit
of the instrument along the cable or rod probe, and the
microprocessor processes the signal to identify the echo generated
by the microwave pulse on the material surface. Correct echo signal
recognition is completed by pulse software. The distance D from the
material surface is proportional to the time travel T of the pulse.
output
Set by inputting empty tank height E (=zero point), full tank
height F (=full range) and some application parameters. The
application parameters will automatically adapt the instrument to
the measurement environment, corresponding to 4-20mA output.
Guided Wave Radar Level Meter Product Feature
The guided wave radar level meter adopts advanced microwave
processing technology and unique Echo Discovery echo processing
technology. With contact measurement, the measurement accuracy is
high and the measurement is more accurate. At the same time, guided
wave radar resists adhesion and is not affected by the external
environment such as medium temperature and adhesion.
A variety of process connection modes and types of detection
components make the 70X series guided wave radar level meter
suitable for various complex working conditions and applications.
For example:; High temperature, high pressure and low dielectric
constant media.
It adopts pulse working mode, with extremely low emission power,
and can be installed in various metal and non-metallic containers,
without harm to human body and the environment.
Guided Wave Radar Level Meter Product Parameter
Typical Application | Liquid (strong corrosion, low dielectric constant, adhesion, high temperature and high pressure, built-in
heating coil, ladder, floating plate and other complex occasions) dust (fly ash, limestone powder, cement powder, concrete and other
media) Solid ( small particles, grain, small stones, sand, etc.) |
Product Model | NYRD701, NYRD702, NYRD703, NYRD704, NYRD705 |
Antenna Type | pole type, double cable type, double pole type, guided wave tube |
Antenna Material | 304, 316, PTFE |
Echo Sampling | 55 times per second |
Measuring Range | 6m, 30m |
Measuring Accuracy | 0.05%~0.1% F. S |
Process Temperature | -40~+130 ℃, - 40~+250 ℃, - 40~+500℃ |
Process Presure | -0.1~2.0MPa, - 0.1~4.0MPa |
Process Connection | thread, bracket, flange, sanitary clamp (optional) |
Electrical Interface | M20 x 1.5, 1/2" NPT |
Supply Power | 24VDC (two wire, four wire), 220VAC |
Signal Output | 4-20 mA /HART/RS485/Modbus... |
Protection Grade | IP67, IP68 (optional) |
Explosion-proof Grade | Exia II CT6 Ga, Exd II CT6 Gb (details in certificate) |
Guided Wave Radar Level Meter
