PRE920 Radar Level Transmitter- PREMS

Introduction to the PRE920 Radar Level Transmitter

The PRE920 radar level transmitter is a state-of-the-art instrument designed for precise level measurement of liquids and solids in various industrial settings. Utilizing advanced 26GHz radar technology, this transmitter is capable of measuring distances up to 70 meters, making it ideal for a wide range of applications including tanks, silos, and complex measurement environments.

How the PRE920 Radar Level Transmitter Works

The PRE920 operates by emitting narrow microwave pulses from its antenna. These pulses travel downwards and reflect off the surface of the material being measured. The reflected signals are then received by the antenna system, which automatically transmits them to the electronic circuit. This circuit converts the signals into position data. Due to the high speed of microwave propagation, this process is nearly instantaneous, ensuring rapid and accurate measurements.

Key Features of the PRE920 Radar Level Transmitter

1. Compact Antenna Design: The small size of the antenna makes installation straightforward and hassle-free. The non-contact radar technology ensures no wear and tear, and no pollution, maintaining the integrity of the measurements.
2. Corrosion and Foam Resistance: The PRE920 radar level transmitter is virtually unaffected by corrosive substances and foam, making it highly reliable in various industrial conditions.
3. Excellent Dust Performance: The device performs exceptionally well even in environments with heavy dust, maintaining accurate measurements.
4. Short Wavelength Efficiency: The shorter wavelength of the radar waves ensures better reflection on inclined solid surfaces, enhancing measurement accuracy.
5. Narrow Beam Angle: This feature concentrates the energy, enhancing echo signals and minimizing interference, resulting in precise measurements.
6. Low Noise Ratio: The PRE920 maintains high performance even under fluctuating conditions, thanks to its low noise ratio.
7. High Frequency for Solid Measurement: The high-frequency radar is particularly effective for measuring solids and materials with low dielectric constants.

Applications of the PRE920 Radar Level Transmitter

The PRE920 radar level transmitter is versatile and can be used in a variety of industries:

• Corrosive Liquid Measurement: Ideal for environments involving aggressive chemicals.
• High Temperature and Pressure Applications: Suitable for extreme industrial conditions.
• Water Level Monitoring: Perfect for monitoring water levels in lakes, rivers, open channels, and urban low-lying areas.

Technical Specifications

• Measurement Range: 0 to 20 meters
• Process Connection: Available with thread or flange connections
• Temperature Range: -40 to 120℃
• Process Pressure: -1Bar to 3 Bar
• Accuracy: ±5 mm
• Protection Grade: IP67
• Power Supply: DC24V or 85-265VAC
• Frequency Range: Up to 26GHz
• Explosion Proof Grade: Exib ⅡCT6 Gb
• Signal Output: 4…20mA/HART (2-wire/4-wire), RS485/Modbus

Installation Guidelines

To achieve optimal performance, follow these installation tips:

• Install the transmitter at 1/4 or 1/6 of the tank diameter.
• Avoid central positions on tank tops or areas with significant echo effects.
• Ensure the highest measurement level does not enter the blind zone.
• Use reflection plates if tank obstacles interfere with measurement.

Electrical Connection Instructions

• Ensure proper connection using 4-20mA/HART (2-wire or 4-wire), RS485/Modbus.
• Adhere to local electrical installation regulations for safety.
• Maintain IP67 protection grade by ensuring waterproof and sealed cable connections.

Dimensions and Design

• Housing: Available in aluminum or stainless steel, with IP67 protection.
• Cable Conduit Port: Options include M20 x 1.5 or ½ NPT.
• Display: Features an LCD with control buttons for easy operation.

Conclusion

The PRE920 radar level transmitter is a robust and reliable solution for accurate level measurement in various industrial applications. Its advanced technology and durable design make it an essential tool for monitoring and controlling levels of liquids and solids in challenging environments. For industries requiring precise and reliable level measurement, the PRE920 radar level transmitter stands out as the optimal choice.