Radar Flowmeter

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ARF5500 Series

Datasheet

The radar flow meter uses microwave technology to measure flow velocity and water levels in a non-contact way. It is ideal for monitoring open channels such as rivers, irrigation canals, and sewage systems, and it is also used in hydroelectric and wastewater treatment plants. The meter offers velocity measurements up to 20 m/s with an accuracy of ±0.01 m/s and water level measurements up to 40 m with an accuracy of ±2 mm. It supports dual-direction flow measurement and features a rain mode to prevent interference. With IP68 waterproofing, it is suitable for outdoor use and can be powered by solar energy. The meter is maintenance-free, with RS485 and 4-20 mA interfaces for easy integration.

Technical Specifications

Measure Principle	Velocity: Radar Doppler Level: Radar
Velocity	Radar Power: 100 mW Radar Frequency: 24 GHz Measuring Range: 0.03-20 m/s Measuring Accuracy: ±0.01 m/s; ±2% FS whichever is greater Measuring Resolution : 1 mm/s Beam Angle α : 12°
Level	Radar Power: 10 mW Radar Frequency: 60 GHz (80 GHz) Measuring Range: 0.2-7 m, 0.2-10 m, 0.2-20 m, 0.2-30 m, 0.2-40 m Measuring Accuracy: ±2 mm; ±0.05% FS whichever is greater Measuring Resolution: 1 mm Beam Angle α: 8°
Process Temperature	-35~70 °C
Housing Material	PTFE – coated Aluminum Alloy
Protection Class	IP68
Display & Recorder	ARC800 (Option) DIN Size: 96 * 96 mm Input: RS485 / Universal Input Output: 4-20 mA, Relay
Flowmeter Output	4-20 mA (Option) Load: Max. 500 Ω Output Type: Liquid level, Distances, flow rate
Flowmeter Communication	RS485 (MODBUS RTU Protocol)
Communication Interface	RS485 9600 bps-115200 bps 8 bit, non parity 1 bit stop
Power Supply	7-32 VDC 5.5-32 VDC (Option)
Operating Current	Work Mode: ≤25 mA at 12 VDC Standby Mode: ≤1 mA at 12 VDC
Lighting Protection Grade	6 KV
Remote Cable Length	Max. 200 m
Dimensions	160 * 100 * 90 mm
Weight	< 1 kg
Mounting	Pole Mounting