UF2000B DN50 ultrasonic water flow meters, RS485 digital water flow meter

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Quick Details
Place of Origin:
Hunan, China
Brand Name:
holykell--ultrasonic flow meter
Model Number:
Variable Area Water Flowmeters
For Water, Oil, Alcohol, Acids Liquid
Pipe Size:
15mm-6000mm measuring
4x8 Chinese characters
Power Supply:
Ni-H batteries, 100V-240VAC for the charger
Data Logger:
Built-in data logger can store over 2000 lines of data
Housing Material:
Communication Interface:
±32 m/s
±1% of reading at rates>0.2 mps
ultrasound non-invasive flow meter

Packaging & Delivery

Selling Units:
Single item
Single package size: 
40X30X18 cm
Single gross weight:
5.5 kg
Package Type:
standard export packaging UF2000B DN50 ultrasonic water flow meters, RS485 digital water flow meter
Lead Time :
Quantity(Piece) 1 - 50 >50
Est. Time(days) 10 To be negotiated



UF2000B DN50 ultrasonic water flow meters, RS485 digital water flow meter 

Why Choose and trust HOLYKELL RS485 digital water flow meter?

You benefits from:

Factory experience:

More than 17 years of experience in Level sensor, pressure transmitters, and digital water flow meter.
large stock:

within 24 hours delivery for standard specifications.
Supply ability:

At least 50000 pcs per Month.
Supply area:

All over the world, about 109 countries (Most of them are from North America, Europe, Australia,Asia and Africa)


CE, RoHS, ATEX audited by TUV Rheinland and ECM

OEM/ODM :  Accept.


You Credit Guarantee:

Holykell is the leading seller in this line on Alibaba trade assurance!---You can search and prove that on alibaba.


  • Trade Assurance: 558 Transactions, total amount is above $ USD 384,000+ (2019.02.01)
  • Near 50% buyers found water level sensor and contact us, Holykell in ALIBABA
  • View Holykell 6000+, Send inquiry 300+, Quote 400+ (half of 2017 years) 


Introduction of ultrasonic water flow meters

UF2000B RS485 digital water flow meter is designed to be installed in a fixed location for long-term flow measurement.

Ultrasonic flow meter is designed to measure the fluid velocity of liquid within a closed conduit. The transducers are a non-contacting, clamp-on type, which will provide benefits of non-fouling operation and easy installation.

Transit-time flow meter utilizes two transducers that function as both ultrasonic transmitters and receivers. The transducers are clamped on the outside of a closed pipe at a specific distance from each other. The transducers can be mounted in V-method where the sound transverses the pipe twice, or W-method where the sound transverses the pipe four times, or in Z-method where the transducers are mounted on opposite sides of the pipe and the sound crosses the pipe once. This selection of the mounting method depends on pipe and liquid characteristics. The flow meter operates by alternately transmitting and receiving a frequency modulated burst of sound energy between the two transducers and measuring the transit time that it takes for sound to travel between the two transducers. The difference in the transit time measured is directly and exactly related to the velocity of the liquid in the pipe.


Specs of UF2000B DN50 ultrasonic water flow meters

Products name

UF2000B DN50 ultrasonic water flow meters, RS485 digital water flow meter

Main unit


Better than ±1%


Better than 0.2%


Transit-time measuring principle





LCD with backlight, display accumulated flow/heat, instantaneous flow/heat, velocity, time etc.


Analogue output: 4-20mA or 0-20mA current output. Impedance 0∼1kW. Accuracy 0.1%.

OCT output: Frequency signal (1~9999HZ)

Relay output: over 20 source signal (no signal, reverse flow etc.)

RS485 serial port




Three analogue input

Three-wire PT100 resistor input (optional)

Other functions

Automatically record the totaliser data of the last 64 days / 64 months / 5 years;

The power-on time and corresponding flow rate of the last 64 power on and off events. Allow manual or automatic flow loss compensation

The instrument working status of the last 64 days



Steel, stainless steel, cast iron, cement pipe, copper, PVC, aluminum, FRP etc. Liner is allowed



Straight pipe section

In the upstream it must be beyond 10D, in the downstream it must be beyond 5D, in the upstream the length must be beyond 30D from the access of the pump. (D stands for pipe diameter)



Water, sea water, industrial sewage, acid & alkali liquid, alcohol, beer, all kinds of oils which can transmit ultrasonic single uniform liquid


Standard: -30C - 90C ,High-temperature:-30C - 160C


Less than 10000ppm, with a little bubble


Flow Direction

Bi-directional measuring, net flow/heat measuring



Main Unit: -30C - 80C

Transducer: -40C -110C, Temperature transducer: select on enquiry


Main Unit: 85% RH

Transducer: water-immersible, water depth less than 3m


Twisted Pair Line, standard length of 20m, can be extended to 500m (not recommended); Contact the manufacturer for longer cable requirement.

RS-485 interface, transmission distance up to 1000m

Power Supply

AC220V or DC24V

Power Consumption

Less than 1.5W


MODBUS, M-BUS, Fuji extended protocol and other factory protocol

Applications of Holykell digital water flow meter

The wall-mounting RS485 digital water flow meter can be applied to a wide range of pipe flow measurements. Applicable liquids include pure liquids as well as liquid with small quantity of tiny particles.

Examples are:

  •  Water (hot water, chilled water, city water, sea water, waste water, etc.);
  •  Sewage with small particle content;
  •  Oil (crude oil, lubricating oil, diesel oil, fuel oil, etc.);
  •  Chemicals (alcohol, acids, etc.);
  •  Plant effluent;
  •  Beverage, liquid food;
  •  Ultra-pure liquids;
  •  Solvents and other liquids


Company Information

Holykell Technology Co. , Ltd is a high-tech company integrating R&D, production and

distribution. The company has a purification plant of 5000m2, an annual output of 1

million production line of pressure sensor, transmitter and intelligent digital instrumentation.

Now the company has more than 120,000 customers worldwide, the products have

been exported to Europe, America, Australia, Africa, southeast Asia, 109 countries.

Holykell can provide a cost effective solution for pressure monitoring for a variety of

applications. Welcome to your inquiry.



Q:Can you accept ODM & OEM service ?

A:We professional provide OEM &ODM service for pressure and level transmitters, and UF2000B DN50 ultrasonic water flow meters, RS485 digital water flow meter.

Q:Could I get samples?
A:Yes,we have materials in stock to help you to get the samples as soon as we can.
Q:How about the quality of the magnets?
A:We have the certification of ISO,CE and ROSH,we could send the certification test of our company to you.

Q:How is the price?
A:As we believe the quality is the most important,we will provide the best quality pressure sensor we can with reasonable price.
Q:Could you provide me the shortest lead time?
A:We have materials in our stock,if you really need,you can tell us and we will try our best to satisfy you.
Q: How can I get the quotation?

A: Send your inquiry to us by the inquiry from on the right-side or the bottom of this page.

Or contact us directly at (email: sales04 at holykell.com, skype: holykell04, whatsapp: +8618684725345), you will get the reply within 12hours, and the quotation will send to you according to your requirements.

Q: How can I get my sensors?/ What's the means of transport?

A. We main delivery goods by express: DHL, FedEx, UPS,TNT, etc or logistics by indicator

Q. How to order ?

A. In order to recommend you the most suitable pressure sensors or level sensors and make an accurate quotation, please provide the following information and send it to our sales when you are going to make an inquiry, thanks ! 

1. What is your medium? Water, oil or others?

2. pipe diameter: DN50, or others?

3. Output signal: 4-20mA, RS485 or others?