The Dywer 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.
INSTRUCTIONS FOR ORDERING
• Choose 1 ultrasonic energy meter model (includes 2 BSPP pipe fittings, 2 tightening nuts, 2 o-rings, and 1 thermowell with welding collar)
• Choose 1 pipe fitting model given the appropriate fitting size if NPT or BSPT connections are required (for DN15 to DN40 only)*
Example: TUF-150-MD, Fitting Size: A, select pipe fitting Model WM-ACC-C01 or WM-ACC-C11.
- Heat metering
- Utilities billing
- Tenant billing
- Monitoring of water heating or cooling: radiators, fan coils
Service : Clean, compatible liquids.
Wetted Materials : Brass and 316L SS.
Range : See chart on catalog page.
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 (sku 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).
Process Connection : See chart on catalog page.
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.
Weight : See chart on catalog page.
Agency Approvals : CE.
**M-BUS available upon request.