Dwyer Instruments SERIES TUF Data Sheet
SERIES TUF | ULTRASONIC ENERGY METER
®
FEATURES/BENEFITS
• Lower maintenance costs with local parameter display and no moving parts
• BACnet MS/TP or Modbus® RTU data communication protocol output allows for easy transfer of data
• Flow and temperature monitor in one unit eliminates the need for multiple units
• Produced to meet EN1434 MID approval for accuracy and quality
DESCRIPTIONAPPLICATIONS
• Heat metering
• Utilities billing
• Tenant billing
• Monitoring of water heating or cooling: radiators, fan coils
The Series TUF Ultrasonic Energy Meter is a highly accurate and
stable energy meter. It utilizes ultrasonic technology to measure heating
and cooling energy consumption. The Series TUF incorporates a
owmeter, temperature meter, and a calculator into a single, compact
unit. The size and lack of moving parts means the Series TUF requires
minimal maintenance. The 8-digit LED display enables easy reading of
the meter’s recorded values; including temperature, ow-rate, energy
consumption, etc. These features make it ideal for installation on chillers,
boilers, and individual apartment piping. With the optional couplings it
is capable of being used with either NPT or BSPT pipe sizes. It is the
perfect meter for tenant billing applications.
Modbus® is a registered trademark of Schneider Automation, Inc.
Service Clean, compatible liquids.
4-1/4
T
2.8´ WATER-IN
FLOW SENSOR
DNXX
H
4-1/4
[108.00]
L
[2 COMMUNICATION,
2 POWER]
4´ RETURN PIPE
TEMP SENSOR
2X D
THREAD
4´ FLOW PIPE
TEMP SENSOR
2.8´ WATER-OUT
FLOW SENSOR
2.8´ WATER-IN
FLOW SENSOR
4´ 4-CORE
WIRE
BALL
BALL
Y
D
TEMPERATURE SENSOR
Wetted Materials Brass and 316L SS.
Range See chart.
Display 8-digit LED.
Accuracy BTU: EN1434/CJ128 Class 2; Flow: ±(2+(0.02 Qp/Q))%; Temperature: ±0.1°C.
Power Requirements 24 VAC/VDC (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).
Process Connection See chart.
Serial Communications Modbus® RTU or BACnet MSTP (selectable)**.
Enclosure Rating IP65.
Enclosure Material Plastic.
Repeatability Flowmeter: 1%.
Electric Connections 3 ft (0.91 m) 4x0.2 mm2 cable with terminal block.
Flow Direction Unidirectional.
Mounting Orientation Horizontal or vertical.
Weight See chart.
Agency Approvals CE.
INSTALLATION
VALV E
STRAIGHT
JOINT
5D
UNION NUT
STRAIGHT
JOINT
FILTER
PIPEPIPEPIPE PIPE PIPE
10D
UNION NUT
WATER RETURN
BALL
VALV E
VALV E
WATER SUPPL
Installation diagram for TUF-150/400
D
BUTTERFLY
VALV E
PIPE PIPE
5D
SENSOR
SLEEVE
SUPPLY WATER
BUTTERFLY
VALV E
RETURN WATER
TEMPERATURE
SENSOR
10D
FILTER
WATER RETURN
BUTTERFLY
VALV E
WATER SUPPLY
Installation diagram for TUF-500/2000
45° MIN.
Installation positions Mounting rotation
45° MIN.
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