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Ultrasonic Flow Meter TUF 2000B Wall‑Mount Fixed Modbus Transducer Specs
Quick Answer: The TUF 2000B is a wall‑mount ultrasonic flow meter built for fixed installations on metal or plastic pipes from DN15 to DN6000. It uses clamp‑on or insertion transducers, talks Modbus RTU out of the box, and measures clean or slightly dirty liquids such as water, wastewater, seawater, and cooling water. Buyers in water treatment, HVAC, and marine sectors choose it when they cannot cut pipes and need a quick, repeatable flow reading.
Here is the thing. Most flowmeter projects in Southeast Asia, the Middle East, or Africa demand one thing first: no pipe cutting. A plant manager in a desalination plant in Saudi Arabia or a shrimp farm in Ecuador cannot afford downtime. The TUF 2000B solves this. You mount the transducer on the outside of the pipe, connect the signal cable, and power the unit with 24 V DC or 90–240 V AC. Within minutes you get flow rate on the LCD display and a 4–20 mA signal going to the DCS.
Silver Automation Instruments supplies the TUF 2000B as a complete kit. The kit contains the wall‑mount converter, a pair of clamp‑on transducers (standard for pipes DN25–DN100), mounting straps, coupling gel, and a signal cable 10 m long. We stock insertion transducers for larger lines up to DN6000 and for cement‑lined pipes where clamp‑on signals weaken.
Why Engineers Specify the TUF 2000B Over Panel Meters
The TUF 2000B is a converter you fix to a wall, not a panel. This matters in pump stations, underground vaults, or outdoor skids where a control panel does not exist or is full. The enclosure is IP66 aluminium. It works at ambient temperatures from -20 °C to 60 °C. In practice, we have seen this unit survive in unshaded Middle Eastern metering huts where daytime heat exceeds 50 °C. The display stays readable.
Measurement channels: the standard model is a single‑channel (one pipe, one pair of transducers). A dual‑channel option measures two pipes simultaneously or one pipe in two planes for higher accuracy. The accuracy on a straight pipe with fully developed flow reaches ±1.0 % of reading for pipe sizes above DN50. On smaller pipes, DN15–DN40, expect ±1.5 % because beam path length gets short. Repeatability sits at 0.2 %. That is enough for most water accounting and energy‑monitoring loops.
Modbus and Outputs You Actually Use
The TUF 2000B comes with an RS485 port speaking Modbus RTU. One register map gives you flow rate, totaliser, velocity, signal strength, and diagnostic code. RTU response time is under 100 ms. The same terminal block also delivers an isolated 4–20 mA output (active or passive, selectable) and a pulse output for driving external totaliser counters. If you need HART, we add an external HART module on the 4–20 mA loop. We do this often for oil and gas customers in the Caspian region.
Data logging: the converter stores flow data on a 8 GB SD card or USB stick attached to the front panel. You get .csv files with timestamp, flow rate, and total. A water‑supply authority in Malaysia uses this feature to bill industrial zones by zone without a separate flow computer.
Transducer Selection and Installation Details
Standard clamp‑on transducers work on homogeneous pipe materials: carbon steel, stainless steel, PVC, PE. Pipe wall must be sound and not exce
Because the TUF 2000B operates on the transit‑time principle, the liquid must carry sound and contain less than 3 % solids by volume. A wastewater plant in Vietnam tests it daily. Their effluent hovers around 1–2 % suspended solids, and the meter tracks the magnetic flowmeter within 2 % difference. For sludge with more solids, a Doppler flow meter or an electromagnetic meter becomes a better fit.
Parameters You Need to Send for a Quote
Most engineers skip this part, but it speeds up the quote. Tell us the pipe outer diameter in mm, wall thickness, pipe material, liquid (water, seawater, glycol mix, cooling water), and temperature range. Flow range helps too, like 0–200 m³/h. With that, we can recommend the transducer size and mounting method. Do not guess the pipe schedule. A wrong wall thickness throws off the ultrasonic path calculation by 5–10 %. Our team checks the pipe data before shipping.
Technical Specs at a Glance
Flow velocity range: 0.01 m/s to 12 m/s. Resolution: 0.25 mm/s. Power supply: 24 V DC (0.5 A) or 90–240 V AC 50/60 Hz. Outputs: 4–20 mA, pulse, RS485 Modbus RTU. Optional: dual channel, 4–20 mA input for temperature (PT100 or PT1000) for heat quantity calculation. Enclosure: IP66 aluminium, wall‑mount. Ambient: -20 °C to 60 °C. Transducer cable: up to 200 m with RG58 coaxial, extended with junction boxes. Pipe size: DN15–DN6000. Accuracy: ±1.0 % of reading (DN50 and above, reference conditions). Protection class for clamp‑on transducers: IP68 standard.
FAQ
Which pipe sizes can the TUF 2000B handle?
DN15 to DN6000 with appropriate transducers. Small‑pipe clamp‑on transducers cover DN15–DN40, medium set DN25–DN100, large set DN50–DN700, and insertion probes up to DN6000.
Can the meter measure seawater in a desalination intake?
Yes. Seawater with salinity up to 40 000 ppm still transmits ultrasound well. Select Hastelloy or titanium‑wetted insertion transducers if you immerse the probe. For clamp‑on, standard transducers work on GRP or steel lines without corrosion issue.
Is Modbus RTU enabled by default?
Yes. The RS485 port is active, 9600 baud, 8‑N‑1, slave address 1 out of the box. You can change settings via the keypad or a free PC utility.
Do I need a straight pipe run?
Yes. Upstream 10 × pipe diameter, downstream 5 × pipe diameter. If you install the meter 3 diameters after an elbow, expect a 2–3 % offset. We can apply a two‑channel configuration on the same pipe to reduce the effect.
How do I get a price for the TUF 2000B?
Send us your pipe size (DN), wall thickness, material, liquid, and flow range. We reply within one working day with a fixed price including the transducer type and cable length.
For a quote or technical data sheet, call +86‑25‑68650347, message us on WhatsApp +86‑25‑52155837, or WeChat +86 15365082610. Our engineers read your application details and propose the exact transducer model, mounting hardware, and output setup.