U20 Portable Clamp-On Ultrasonic Flow Meter
The SEGMENsensor U20 is a handheld clamp-on ultrasonic flow meter for spot checks and flow surveys. It reads ±1% on 25–1200 mm pipes, or DN15–DN40 with small-pipe transducers, runs about 16 hours on its 3000 mAh battery, logs to an SD card and ships within 2 weeks of payment.
- ±1%accuracy, ±0.01 to ±12 m/s
- 25–1200 mmpipe range; DN15–DN40 with F1
- 16 hon one charge, 3000 mAh battery
- 32 GBSD-card logging, 1–99999 s interval
- Ships within 2 weeksMade to order and shipped from our factory within 2 weeks of payment.
- Customs documents suppliedWe send the commercial invoice and packing list for your import clearance.
- Calibration reportEvery meter is calibrated before it leaves the factory and ships with its report.
- Engineers by emailReply within one working day, Mon–Fri 09:00–18:00 China time.
From order to your door
- TodayConfigure and pay
Card, PayPal or bank transfer. UPS shipping is added at checkout; import duty and tax are not included.
- Within 2 weeksBuilt and calibrated
Your meter is made to order, calibrated before it leaves the factory and packed in its own box.
- 3–5 working daysUPS
Door to door from our factory to your company address, usually 3–5 working days.
- DeliveredYou clear customs
You pay import duty and tax in your country, usually through UPS or your customs broker. We supply the commercial invoice and packing list.
What's in the box
Standard configuration, included in the unit price:
- U20 handheld unit with rechargeable 3000 mAh lithium battery
- One pair of transducers with mounting rail or bracket — the configuration you choose
- Two 1.3 m pipe straps for the P2 / P2H rail (fit pipes up to DN300) and coupling compound
- Aluminium carry case
- Charger with universal plug adapter
- Output terminal box for 4–20 mA, RS485 Modbus, OCT pulse and relay wiring
- Steel chains (2 m) for mounting the transducer rail
- Tape measure for the pipe circumference
- User manual
- Factory calibration report
- Any options you add, such as PT1000 sensors or a second small-pipe set
Which transducer do I need?
Choose P2 or P2H for 25–1200 mm pipes and F1 or F1H for DN15–DN40. To cover both large and small pipes with one meter, pick P2 or P2H and add a second F1 or F1H set in step 3.
- U20 handheld unit with rechargeable 3000 mAh lithium battery
- One pair of transducers with mounting rail or bracket
- Two 1.3 m pipe straps for the P2 / P2H rail (fit pipes up to DN300) and coupling compound
- Aluminium carry case
- Charger with universal plug adapter
- Output terminal box for 4–20 mA, RS485 Modbus, OCT pulse and relay wiring
- Steel chains (2 m) for mounting the transducer rail
- Tape measure for the pipe circumference
- User manual
- Factory calibration report
| Your pipe and liquid | Part number | Transducer | Cable | Unit price (USD) | |
|---|---|---|---|---|---|
| 25–1200 mm, liquid up to +80 °C | U20-P2 | P2 transducers on the ST single rail, 5 m cable. For pipes above DN300 you add extra straps. | 5 m | US$890 | Select |
| 25–1200 mm, +80 to +130 °C | U20-P2H | P2H high-temperature transducers on the ST rail, 5 m cable. For pipes above DN300 you add extra straps. | 5 m | US$1,050 | Select |
| DN15–DN40, 0 to +65 °C | U20-F1 | F1 small-pipe transducers on the SMT bracket, 3 m cable. | 3 m | US$890 | Select |
| DN15–DN40, up to +115 °C | U20-F1H | F1H high-temperature small-pipe transducers on the SMT bracket, 3 m cable. | 3 m | US$1,050 | Select |
Options — added to the unit price
| Code | Option | Price (USD) |
|---|---|---|
DT | DT dual mounting rail | +US$49 |
RTD | Energy function, RTD module only | +US$139 |
E | Energy (BTU) meter | +US$259 |
F1 | Extra small-pipe set F1 | +US$349 |
F1H | Extra small-pipe set F1H | +US$469 |
I1 | Insertion transducers | Price on request |
Cable | Longer transducer cable, custom up to 30 m | Price on request |
Extra cable and pipe straps
| Code | Item | Price (USD) |
|---|---|---|
STRAP2 | Extra or spare 1.3 m pipe straps | +US$11.50 |
- Transducer cable: P2 / P2H 5 m, F1 / F1H 3 m.
How do I install the U20?
The U20 sets up on the pipe in minutes for a survey, with no cutting and no shutdown.
- Enter the pipe data
Key in the pipe outside diameter, wall thickness, material and liquid. The meter shows the transducer spacing.
- Set the transducers on the rail
Slide the two transducers along the rail to the spacing shown, with couplant on their faces. Small pipes use the SMT bracket.
- Strap the rail to the pipe
Fit the rail along a straight, full section at 3 or 9 o'clock and tighten the straps.
- Read and log
Check the signal strength, read the flow and start SD-card logging at the interval you need.
U20 dimensions
| Handheld unit | 220 × 139 × 53 mm |
|---|---|
| Clamp-on transducer | 40 × 34 × 29 mm |
| Mounting rail | 320 / 330 mm long |
U20 specifications
| Pipe size | 25–1200 mm (P2, P2H); DN15–DN40 (F1, F1H) |
|---|---|
| Flow velocity | ±0.01 to ±12 m/s (±0.03 to ±40 ft/s) |
| Accuracy | ±1% |
| Liquid | Single, sound-conducting liquid in a full pipe |
| Outputs | Choose 2 of 4: 4–20 mA, RS485 Modbus, OCT pulse, one relay |
| Power | Rechargeable 3000 mAh lithium battery, about 16 hours per charge |
| Display | 240 × 128 backlit LCD |
| Data logging | 32 GB SD card, logging interval 1–99999 s |
| Transducer temperature | P2 −40 to +80 °C; P2H −40 to +130 °C; F1 0 to +65 °C; F1H 0 to +115 °C |
| Protection | Transducers IP68 |
| Cable | 5 m standard (F1 / F1H: 3 m); custom up to 30 m |
| Certifications | CE, UKCA — EMC tested to EN IEC 61000-6-2 and EN IEC 61000-6-4 (certificate copies on request) |
Spare parts for the U20
Order replacement transducers, temperature sensors and installation parts for the U20 on their own. Prices are per item, excluding shipping and import duties.
| Code | Part | Price (USD) | Qty |
|---|---|---|---|
SP-ST | Pair of stainless-steel pipe straps, 1.3 m Standard item: 2 straps (1 pair) come with every meter. | US$11.50 | |
SP-CPL | Coupling compound, one tube Standard item: Coupling compound comes with every meter. | US$11.50 |
Shipping, duties and delivery
- We ship from our factory in China within 2 weeks of payment. Every meter ships in its own box.
- UPS delivers door to door, usually in 3–5 working days after dispatch. The UPS shipping cost is shown at checkout and paid with your order.
- Import duty, VAT or GST and any customs fees are not included in the price or the checkout total. You pay them as the importer in your country, and the rates differ by country.
- We help with customs clearance: the commercial invoice and packing list go with the shipment and by email, and our engineers answer customs questions about the product.
- Prices on this page are per unit, excluding shipping and import duties, for 1–9 units. For 10 units or more, email info@segmensensor.com and we will recalculate the price for your quantity.
Frequently asked questions
Is the U20 right for my job?
The U20 is for checking or surveying flow on many pipes: commissioning, energy audits, checking an installed meter. For a permanent measuring point, a wall-mount U10, U10S PRO or U11 is the better choice.
Can one U20 measure large and small pipes?
Yes. Order P2 or P2H for 25–1200 mm pipes and add a second set of F1 or F1H small-pipe transducers in step 3 for DN15–DN40.
What does the price include?
The price is per unit and includes the U20 handheld with its battery, one pair of transducers with rail or bracket, two 1.3 m pipe straps for the rail, steel chains, a tape measure, the charger with plug adapter, the output terminal box, an aluminium carry case, coupling compound, the user manual and a factory calibration report. UPS shipping is added at checkout. Import duty and tax are not included; you pay them in your country on import.
My pipe is larger than DN300. How many straps do I need?
The two pipe straps in the box are 1.3 m long and fit pipes up to DN300. Each transducer is held by one strap loop around the pipe, and the loop needs about 3.14 × the pipe outside diameter, plus a little to tighten. Extra straps are the same 1.3 m straps and join onto the standard ones, so every extra pair adds 1.3 m to both loops. Work out what your pipe needs and choose the number of extra pairs in step 1 of the configurator; they are charged per pair, and the price is shown before you pay. Spare pairs can be added under Options in step 3.
Can the U20 measure heating or cooling energy?
Yes. Add the energy option with a pair of clamp-on PT1000 sensors, or the RTD module only if you have your own PT1000 sensors.
Do I pay import duty when the meter arrives?
Yes. Import duty, VAT or GST and any customs fees are paid by you as the importer, and the rates depend on your country. UPS or your customs broker will ask for payment before or at delivery. We send the commercial invoice and packing list with the shipment and by email, and help with customs questions about the product.
When will my order arrive?
We ship from our factory within 2 weeks of payment. UPS then usually takes 3–5 working days to deliver. The configurator shows an estimated delivery date before you pay.
Can I order 10 or more units?
Yes. For 10 units or more, email info@segmensensor.com with the part number and quantity. Our engineers recalculate the price for your quantity and reply by email.
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