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Product Details:
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| Measuring Range: | 6m | Power Supply: | 24VDC (±Power 30%) |
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| Antenna Type: | Waveguide Tube Antenna | Process Connection: | Screw Thread, Flange(optional), |
| Protection Grade: | Display Instrument IP67, IP67 | Operating Temperature: | -40~130℃ |
| Signal Output: | 4-20mA, 4-20mA/HART(Two Wire/FOUR Wire) | Process Pressure: | -10~40BAR |
NYRD704 1.8GHz Guided Wave Radar Level Meter
The guided wave radar level meter is a level meter based on the principle of time domain reflection (TDR). The electromagnetic pulse of the radar level gauge propagates along the steel cable or probe at the speed of light. Part of the pulse of the level meter is reflected to form an echo and return to the pulse transmitter along the same path. The distance between the transmitter and the surface of the measured medium is proportional to the propagation time of the pulse during that period, and the liquid level height is calculated.
Radar Level Meter Technical Parameter
| Typical application | Liquids, powders, solid particles, corrosive media |
| Antenna material | Flexible cable/304/PTFE (optional) |
| Measuring range | 6 m |
| Accuracy | ±1mm |
| Power supply | 24 VDC(Two-wire,Four- wire) |
| Medium temperature | -40～+130℃,-40～+250℃ |
| Pressure | -0.1～4.0MPa |
| Process connection | Thread, Flange (optional) |
| Protection class | IP67 |
| Explosion-proof grade | ExiaⅡCT6(optional) |
| Signal output | 4...20mA/HART/RS485/Modbus... |
※ Note: Products can be customized according to the specific requirements of users!
Radar Level Meter Operating Principle
The high-frequency microwave pulse emitted by the guided wave radar propagates along the detection component (steel cable or steel rod), and when it encounters the measured medium, due to the sudden change of the dielectric constant, it causes reflection, and a part of the pulse energy is reflected back. The time interval between the transmitted pulse and the reflected pulse is proportional to the distance of the measured medium.
Radar Level Meter Design Features
◎ Guided wave radar level meter adopts advanced microwave processing technology and unique Echo Discovery echo processing technology, contact measurement, high measurement accuracy and more accurate measurement. At the same time, the guided wave radar is resistant to adhesion and is not affected by the external environment such as medium temperature and adhesion.
◎ A variety of process connection methods and types of detection components make 70X series guided wave radar level gauges suitable for various complex working conditions and applications. Such as: high temperature, high pressure and small dielectric constant medium.
◎ Using pulse working mode, the product has extremely low emission power, and can be installed in various metal and non-metal
containers without harm to human body and the environment.
Radar Level Meter Electricalconnections
◎ Supply voltage
(4 ~20)mA/HART(Two-wire)
The power supply and the output current signal share a two-core shielded cable. Refer to the technical data for the specific supply voltage range. For the intrinsically safe type, a safety barrier must be added between the power supply and the instrument.
(4~20)mA/HART(Four-wire)
The power supply and the current signal are separated, and each uses a two-core shielded wire. Refer to the technical data for the specific supply voltage range.
RS485/Modbus
The power supply and the Modbus signal are separated, and each uses a two-core shielded wire. For specific supply voltage range see technical data .
◎ Connection method
Contact Person: Gao
Tel: 18792851016
