




Dwyer Instruments PUB-20 | Portable ultrasonic flowmeter converter Type B | 2" to 40" (50.7 to 1016 mm) pipe diameter range
The transit-time difference is used by the Model PUB-20 Portable Ultrasonic Flowmeter Kits to measure pipe flow rates non-invasively. These instruments are lightweight and small, utilizing cutting-edge electronics and signal processing technologies to provide superior performance and effortless use. These devices include a built-in rechargeable battery that allows for 20 hours of continuous operation, making them ideal for on-the-go flow monitoring. While the PUF has an IP67 certified container to comfortably house and protect all equipment, the PUB comes with a sturdy carrying bag with molded foam inserts. Their panels include a handy backlight for visual comfort and text that is easy to see. The function keys' effective arrangement contributes to the programming of these devices' ease of use. Both pulsed and analog outputs are available with these series.

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- Specifications
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Accuracy | +/-0.5 to 2% of flow reading for flow rate > 0.66 ft/s (0.2 m/s) and pipe ID > 2.95" (75 mm) +/-3% of flow reading for flow rate > 0.66 ft/s (0.2 m/s) and pipe ID in range 0.512 to 2.95" (13 to 75 mm) +/-6% of flow reading for flow rate < 0.66 ft/s (0.2 m/s) |
Applicable Pipe Lining | Rubber, glass, concrete, epoxy, steel, other |
Applicable Pipe Material | Carbon steel, SS, copper, UPVC/PVDF, concrete, galvanized steel, mild steel, glass, brass |
Approvals | CE |
Connection | Electrical: Multi-pin Lemo plugs |
Display | 240 x 64 pixel graphic display, high contrast black on white with backlight Languages: English, French, German, Swedish, Italian, Spanish, Portuguese, Russian, Norwegian, and Dutch 5.2" W x 1.5" H |
Enclosure Rating | Converter: IP54 Transducers: IP51 |
Input | Lemo connector cable from sensors |
Manufacturer | Dwyer Instruments |
Material | Flame retardant injection molded ABS plastic |
Maximum operating temperature | -4 to 275°F (-20 to 135°C) |
Output | Analog: 1 opto-isolated output: 4 to 20 mA, 0 to 16 mA or 0 to 20 mA (selectable) Error current: 0 to 26 mA (selectable) Load resistance: 620 ¢ž¦ max Pulse: 1 opto-isolated MOSFET relay, 150 mA max, 500 pps max, 200 Hz max |
Permissible Air Content | <3% by volume |
Pipe Lining Thickness | < 1" (< 25 mm) |
Pipe Wall Thickness | 0.04 to 3" (1 to 75 mm) |
Power Adapter | 110/240 VAC adapter. UK, US, European adapters included |
POWER CONSUMPTION | 10.5 W |
Power | 9 to 24 VDC, (1) 5-Cell NiMH battery, internal, factory replaceable (continuous operation time: 20 hours with back-light and output off) (recharging time: 6.5 hours, power adapter used) |
Range | 0.33 to 65.62 ft/s (0.1 to 20 m/s) |
Repeatability | +/-0.5 % of measured value or +/-0.066 ft/s (0.02 m/s) |
Response Time | <500 ms |
Turbidity | <3 % by volume of particulate content |
Type | Portable ultrasonic flowmeter |
Weight | Unit without accessories: 2.3 lb (1.06 kg) Unit with accessories in carrying case: 13.23 lb (6.0 kg) |
- Uses transit-time difference to monitor pipe flow rates accurately and non-i
- nvasively.
- Design that is portable for simple handling and transfer in a variety of situations.
- incorporates the most recent developments in signal processing and electronics for easy operation and high-performance measurement.
- Uses cutting-edge technologies to get precise measurements.
- With a built-in rechargeable battery, it can run continuously for up to 20 hours, making it the perfect choice for portable flow monitoring.
- Either an IP67 certified case (PUF) or a tough carrying case with molded foam inserts (PUB) to comfortably contain and protect all equipment during storage and transit.
- Screens ensure readability in a range of lighting settings by providing comfortable, backlit text that is easy to read.
- The user experience is improved by function keys' effective layout, which makes programming and using them simple.
- Offers pulsed and analog outputs for flexible data transfer and system integration.
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