




Dwyer Instruments UBT-14 | 3/4-4" Ultrasonic heat meter with pulse output
An affordable clamp-on ultrasonic heat meter is the Model UBT-14 Clamp-On Ultrasonic Thermal Energy Meter. As an alternative to conventional inline thermal energy meters, it uses ultrasonic technology. The series measures energy using temperature sensors and flow using ultrasonic waves and time differentials.

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Accuracy | +/-3% of flow reading for velocity rate >1 ft/s (0.3 m/s) |
Applicable Pipe Lining | None |
Applicable Pipe Material | Steel, SS, copper, or plastic |
Approvals | CE |
communication | Pulse, optional Modbus® communication. |
Connection | Electrical: 16.4' (5 m) cable |
Display | Backlit: 2.28" x 0.43" (58 mm x 11 mm), 2 line x 16 characters |
ENCLOSURE MATERIAL | Plastic polycarbonate |
Enclosure Rating | IP54 |
Flow Direction | Any |
Humidity | Limit: 90% RH at 122°F (50°C) max |
Manufacturer | Dwyer Instruments |
Maximum operating temperature | Process: 32 to 185°F (0 to 85°C) Ambient: 32 to 122°F (0 to 50°C) |
Mounting | Orientation: Any |
Output | Pulse: 1 opto-isolated MOSFET relay, 500 mA max, 166 pps max, 200 Hz max |
Outside Diameter Range | 3/4 to 4" (25 to 115 mm) 5 to 7" (125 to 180 mm). Pipe size is dependent on pipe material and internal diameter |
Pipe Wall Thickness | 0.02 to 0.36" (0.5 to 10 mm) |
POWER CONSUMPTION | 7 W (DC) or 7 VA (AC) max |
Power | 12 V to 24 V +/-10% AC/DC at 7 watts per unit. Optional plug-in 12 V power supply |
Range | 0.3 ft/s to 32 ft/s (0.1 m/s to 10 m/s) |
Repeatability | +/-0.15% of measured value |
Type | Ultrasonic Thermal Energy Meter |
Weight | 1.10 lb (0.5 kg) |
- Non-invasive pipe measuring can reduce installation expenses.
- Easy installation thanks to the inclusion of all required parts, including the sensor, wires, mounting attachments, and converter.
- This clamp-on item is designed to fit application requirements with a lightweight, compact design that is easy to install. It is suitable for homogenous liquids without air.
- Reduce assessment time with the handy lighting for visual comfort, pulse output, communication choices, and easy-to-read language that shows both energy rate and totalized energy.
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