Non-Harmful To Human Body 6m Liquid Guided Wave NYRD704 Radar Level
Transmitter
NYRD704 Radar Level Transmitter Working Principle
Guided wave radar emits high-frequency microwave pulses that travel
along the detection component (steel cable or steel rod). When
encountering the measured medium, part of the pulse energy is
reflected back due to the sudden change of dielectric constant
causing reflection. The time interval between the emitted 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 travels at the speed of light and
the travel time can be converted into a level signal by the
electronics. The probe emits a high frequency pulse and propagates
it along a cable or rod probe. When the pulse encounters the
material surface, it is reflected back and received by the receiver
in the instrument, which converts the distance signal into a level
signal.
The reflected signal is transmitted along the cable or rod probe to
the instrument's electronic circuitry. The microprocessor processes
the signal and identifies the echoes generated by the microwave
pulse on the material surface.
The correct identification of the echo signal is done by the pulse
software. The distance D to the material surface is proportional to
the pulse time travel T:
D = C × T/2 (C is the speed of light).
Since the distance E from the empty tank is known, the material
level L is:
L = E - D
Output:
It is set by entering the empty tank height E (= zero point), the
full tank height F (= full scale) and some application parameters.
The application parameters automatically adapt the instrument to
the measurement environment and correspond to the 4-20mA output.
NYRD704 Radar Level Transmitter Design Feature
1.Intelligent radar level meter adopts advanced microwave
processing technology and unique echo discovery echo processing
technology. Contact measurement, high measurement accuracy, more
accurate measurement. Meanwhile, the guided wave radar is
anti-adhesive and not affected by external temperature such as
medium temperature and adhesion.
2.A variety of process connection methods and detection element
types make 70X series guided wave radar level meter suitable for
various complex working conditions and applications. Such as high
temperature, high pressure, low dielectric constant media.
3.Adopting pulse working mode, the product emits extremely low
power and can be installed in various metal and non-metal
containers, which is harmless to human body and environment.
NYRD704 Radar Level Transmitter Technical Parameters
| Typical application | Fluids, especially low dielectric constant, stirring and other
complex applications |
| Antenna material | 304(optional) |
| Measuring range | 6m |
| Measuring accuracy | 0.05%-0.1%F.S |
| Power supply | 24VDC(Two lines, four lines) |
| Medium temperature | -40~+130℃ |
| Process pressure | -0.1~0.3MPa |
| Process connection | Thread, flange (optional) |
| Protection level | IP67 |
| Explosion-proof grade | Exia II CT6(optional) |
| Signal output | 4...20mA/HART/RS485/Modbus... |
Note: According to the specific requirements of users can be
customized design products.
