LRF2000P Ultrasonic Flow Meter With Inner Printer

Ultrasonic Flow Meter

LRF-2000P portable ultrasonic flow meter can be powered by a rechargeable battery or 220VAC. It has a built-in printer and a data logger. Installation is non-intrusive.

LRF-2000P Portable ultrasonic flow meter realizes the non-contact measurement. It is ideal for flow surveys and closed-pipe applications where non-invasive measurement of liquids is required. 

LONGRUN LRF-2000P portable ultrasonic flow meter can be powered by a rechargeable battery or 220VAC. It has a built-in printer and a data logger. Temperature and heat can also be measured by connecting a clamp-on temperature transducer. Widely used in water supply, heat supply, chemical industry, machinery, and energy resources 

Feature :

  • Accuracy Linearity: better than 0.5%, Repeatability: better than 0.2%,Accuracy: better than ±1%
  • The non-intrusive clamp-on transducer has no pressure drop and no pipe disturbance.
  • Wide measuring range Several types transducers for selection, measuring pipe size from DN 32mm to DN 6000mm
  • Large capacity battery Built-in rechargeable Ni-MH rechargeable battery provides over 20 hours of continuous operation
  • Built-in printer Available to print data in real-time, also available to timed print over 20 pre-set measuring results
  • Built-in data logger Uplink over 20 measuring data to computer or internet
  • Data storage Store over 20 pre-set measuring results to SD card, making it easy for data analysis and statistics
  • Rs485 communication interface Upload the parameters and measuring results to compute

Specification :



Performance & Parameter



Transit time ultrasonic flowmeter




2×20 character LCD with backlight,
 support the language of Chinese, English & Italia

Signal Output

1-way 4-20mA output, electronic resistance 0~1K, accuracy 0.

1 way OCT pulse output ( Pulse width 6~1000ms, the default value is 200

1-way relay output

Signal Input

3-way  4-20mA input, accuracy 0.1%,
acquire signals such as temperature, press, and liquid le

Achieve heat measurement by connecting the
temperature transducer PT 100.

Data Interface

Insulate RS485 serial interface, upgrade the flowmeter software by computer, support MODBUS

Data Record

Thermal printer, external SD card(2G of capacity)

Pipe Instalation Condition


Steel, Stainless steel, Cast iron, Copper, Cement pipe, PVC,
 Aluminum, Glass steel products, and liners are allowed.


32 - 6000mm

Straight Pipe

Transducer installation should be satisfied:
upstream 10D, downstream 5D, 30D from the pump

Measuring Medium

Type of Liquid

Single liquid can transmit sound waves, such as Water (hot water, chilled water, city water, seawater, wastewater, etc.); Sewage with small
particle content; Oil (crude oil, lubricating oil, diesel oil, fuel oil, etc.) Chemicals (alcohol, etc.); Plant effluent; Beverage; Ultra-pure liquids, etc




Less than 10000ppm and little bubble



Working Environment


Converter: -20~60°C; Transducer: -30~160°C


Converter: 85% RH; Transducer protection level: 6

Power Supply

8 built-in Ni-MH batteries 1.2V(for over 20 hours of operation).
Could operate for 8 hours by connecting 4-20mA signal output. 90V - 260V AC adapter

Power Consumption