Dwyer Series TUF Ultrasonic Energy Meter
Dwyer Series TUF Ultrasonic Energy Meter

Dwyer Series TUF Ultrasonic Energy Meter

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Dwyer Series TUF Ultrasonic Energy Meter is a highly accurate and stable energy meter that utilizes ultrasonic technology to measure heating and cooling energy consumption. The Series TUF is a compact meter with a flowmeter and energy calculator in one, making it great for installation on chillers and boilers.

Flow includes Flow Transmitters, Flow Sensors, Flowmeters, Sight Flow Indicators and Water Meters. Mass Flowmeters, Controllers, Flow Indicators, and Controllers are ideal for the measurement of flow rates. Flow Switches come as paddle, thermal, piezo, and shuttle/piston.

Flow Transmitters are sensors with an electrical transmission output for remote indication of flow rate. The different transmitters are Ultrasonic, Paddlewheel: in-line, adjustable, and fixed, electromagnetic: adjustable, in-line, and fixed, and turbine: in-line. Accessories and Fittings for these flow transmitters are also in this category.

Ultrasonic flow transmitters are sensors with electrical transmission output for remote indication of liquid flow rate. Models are cost-effective, compact, and lightweight. Applications include treated water, river water, diesel oil, data logging, flow measurement for heating metering, and utility billing.

Dwyer Series TUF Features

  • Lower maintenance costs with local parameter display and no moving parts
  • Serial communication output allows for easy transfer of data
  • Flow and temperature monitor in one unit eliminates the need for multiple units


  • Heat metering
  • Utilities billing
  • Tenant billing
  • Monitoring of water heating or cooling: radiators, fan coils
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Dwyer Series TUF Specification

Service Clean, compatible liquids.
Wetted Materials Brass and 316L SS.
Display 8-digit LED.
Accuracy BTU: EN1434/CJ128 Class 2; Flow: ±(2+(0.02 Qp / Q))%; Temperature: ±0.1°C.
Power Requirements 24 VDC/VAC (model dependent) or 3.6 V ER26500 lithium metal battery, user supplied and installed, battery acts as back-up if power is lost.
Power Consumption 1 W.
Temperature Limits Ambient: 41 to 131°F (5 to 55°C); Process: 36 to 203°F (2 to 95°C).
Humidity Limit <93%.
Pressure Limits 232 psi (16 bar) for DN15 to DN40; 362 psi (25 bar) for >DN50.
Pressure Drop <1.5 psi (10 kPa).
Serial Communications Modbus® RTU or BACnet MSTP (selectable)**.
Enclosure Rating IP65.
Enclosure Material Plastic.
Repeatability Flowmeter: 1%.
Electrical Connections 3′ (0.91 m) 4×0.2 mm2 cable with terminal block.
Flow Direction Unidirectional.
Mounting Orientation Horizontal or vertical.
Agency Approvals CE.

Download Data Sheet: Series TUF Ultrasonic Energy Meter

Ref: dwyer-inst.com

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