(0) Shopping cart
You have no items in your shopping cart.
Shopping Categories

    Portable Clamp-On Ultrasonic Flow Meter for Water

    5 out of 5 based on 4 reviews | Write a review
    Portable ultrasonic flow meter is designed for wide pipe sizes ranging from 40mm to 1200mm in nominal diameter with accuracy ±1% of reading. Big LCD display, built-in large capacity data logger, batteries-powered for long working. With clamp-on installation, the non invasive flow meter is easy to install, convenient to operate, and less maintenance, suitable for virtually all pure liquids like water, gasoline, oils and so on. High accuracy, good repeatability and low price.
    SKU: ATO-FLOW-2100H
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days


    • Convenient use, fast testing & less maintenance. The non invasive ultrasonic flow meter can measure the liquid flow rate inside the pipe without disassembling the pipe and pressure loss
    • Applicable for various pure liquids including water, tapwater, seawater, beers, lubricants, gasoline, cooking oil, etc.
    • Compatible with various material pipes like cast iron pipe, galvanized pipe, stainless steel pipe, PVC pipe, aluminum pipe, etc. The ultrasonic flow meter with the proper clamp-on transducer does well in these applications.
    • Measuring diameter covers a wide range of DN40-DN1200, suitable for all kinds of industrial site installation and use.
    • Big LCD display the instantaneous flow rate and cumulative flow rate at the real time.
    • Built-in data logger, the ultrasonic flowmeter can storage 2000 lines of data.


    Model ATO-TDS-2100H
    Accuracy ±1% of reading @ flow rate >0.2m/s
    Linearity 0.50%
    Repeatability 0.20%
    Response Time 0-999 seconds, user-selectable
    Velocity 0.2~32m/s
    Pipe Size 40mm-1200mm
    Totalizer 7-digit totals for net, positive and negative flow respectively
    Liquid Type Virtually all liquids
    Transducer (Optional)* Standard clamp-on transducers: small/medium/large; High-temperature clamp-on transducers: small/medium/large
    (See the "Transducer Selection" table below for the details)
    Protection Grade Transducer: IP67
    Transducer Cable Length Standard 5m x 2
    Operating Temperature Main unit: -30℃~90℃, Transducers: -30℃~160℃
    Operating Humidity Main unit: ≤85%RH
    Power Supply 3 AAA built-in Ni-H batteries (Can work over 12 hours after a full charge), external charger with 100V-240VAC
    Display 4 x 16 English letters
    Signal Output OCT output (6~1000ms)
    Data Logger Built-in data logger, can store over 2000 lines of data
    Housing Material ABS
    Main Unit Size 100x66x20mm
    Main Unit Weight 500g with batteries
    PDFDownload Attachments Ultrasonic Flow Meter User Manual

     Transducer Selection

    Transducer Measuring Pipe Size Range Temperature Range Dimensions (mm)
    Standard clamp-on transducer - Small DN40-DN100 -30℃~90℃ 45*25*32
    Standard clamp-on transducer - Medium DN50-DN700 64*39*44
    Standard clamp-on transducer - Large DN300-DN1200 97*54*33
    High-temp clamp-on transducer - Small DN40-DN100 -30℃~160℃ 45*25*32
    High-temp clamp-on transducer - Medium DN50-DN700 64*39*44
    High-temp clamp-on transducer - Large DN300-DN1200 97*54*33

    Transducer Installation

    1. Choosing right installation position

    Ultrasonic flow meter transducer installing position

    • The pipeline where the transducer is installed must have a long enough straight pipe section, of course, the longer the better, generally 10 times the pipe diameter upstream, 5 times the pipe diameter downstream, and 30 times the pipe diameter from the pump port. At the same time, ensure that the liquid in this section must be full.
    • Make sure that the temperature range of the pipe under test is within the applicable range of the sensor, usually at room temperature.
    • Take the corrosion or scaling of the pipeline into consideration. It is better to choose a newer pipeline for the measurement. If it is not available, subtract the corrosion from the pipe wall thickness or consider scaling as the pipe lining.

    2. Transducer installation method

    • Z-installation method: generally suitable for the pipes above DN100mm

    Ultrasonic flow meter transducer Z installation

    • V-installation method: generally suitable for the DN20-300mm pipes

    Ultrasonic flow meter transducer V installation.

    * The installation distance is shown after entering the pipe parameters into the ultrasonic flow meter.

    Existing reviews of Portable Clamp-On Ultrasonic Flow Meter for Water
    A commercial offer for the flow meter
    Good morning, | ask you to provide a commercial offer for the supply of:
    Portable ultrasonic liquid flow meter with the following specifications:
    - Measurement method - consignment note ultrasonic.
    - Number of measurement channels -2
    - Charger - 230 VAC current (output and ground - Standard for Europe)
    From: candice | Date: 20/08/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    We recommend Portable Clamp-On Ultrasonic Flow Meter.
    This flow meter meets your needs. Please choose the combination of medium probe + large probe.
    But this flowmeter is a single-channel ultrasonic flowmeter, which can only measure one channel at a time.
    Easy to monitor
    This little ultrasonic flow meter makes it so easy to monitor how much water I am putting in my RV tanks. I mainly use it for filling my black tank for a good flush. I will order more.
    From: Visonelet | Date: 16/11/2022
    Was this review helpful? Yes No (0/0)
    Love it.
    Works great on copper tubes/ pipes. Product is fairly easy to setup. Seems to give stable and accurate readings. Very acurate once properly set up.
    From: Owen | Date: 15/04/2022
    Was this review helpful? Yes No (0/0)
    Ultrasonic flow meter measurement
    We are looking to measure tile drainage outflow velocity. Pipe size varies from 4 to 24 inches with water levels ranging from 0.25 to 4 inches. Would this product be able to measure this low amount of water?
    From: Susanb | Date: 30/06/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    SKU: ATO-FLOW-2000H >>> Portable Clamp-On Ultrasonic Flow Meter for Water
    See specs, price, and you can order online by credit card on:
    Unfortunately, this flow meter can only measure water flow when the pipe is full.
    Load more reviews...
    Write your review for Portable Clamp-On Ultrasonic Flow Meter for Water
    • Only registered users can write reviews
    • Bad
    • Excellent