Dwyer Instruments TUF-320-BN | Tenant ultrasonic BTU flowmeter | DN32 pipe size and 6.0 m3/h permanent flow rate with BACnet® communication
The Dwyer TUF-320-BN is a tenant ultrasonic BTU flowmeter designed for DN32 piping and a 6 m³/h permanent rated flow. It combines ultrasonic flow measurement, temperature sensing and energy calculation in one compact unit, with BACnet® MSTP communication for integration with building management and utility billing systems.
Part Number: TUF-320-BN
Genuine Control Techniques stock at General Tech Services LLC, UAE, with free UAE-wide shipping. Request a quote in under a minute — call +971 6 5436933.
Product Overview
The Dwyer Series TUF Ultrasonic Energy Meter provides accurate and stable measurement of heating and cooling energy consumption in clean, compatible liquids. The TUF-320-BN is the DN32 version, rated for a permanent flow rate of 6 m³/h, making it suitable for tenant-level heat metering, utility billing and HVAC energy monitoring.
By combining a flowmeter, temperature sensors and energy calculator into one compact device, the TUF-320-BN reduces the need for separate measurement equipment. It can be used for monitoring chillers, boilers, radiators, fan coil units and individual tenant or apartment piping.
The ultrasonic measurement principle has no moving parts, helping reduce mechanical wear and maintenance requirements. An integrated 8-digit LCD provides local access to temperature, flow rate and energy readings.
For building automation and billing applications, the TUF-320-BN provides BACnet® MSTP communication, allowing measured data to be transferred to compatible BMS and utility management systems.
The meter features a plastic housing with brass and 316L stainless steel wetted parts and an IP65 enclosure rating. It supports horizontal or vertical installation, with horizontal pipe runs requiring installation at least 45° from horizontal to help prevent debris accumulation.
The DN32 version uses a G1-1/4B threaded connection within the DN15-DN40 connection range. The unit operates from a 24 Vac/Vdc supply and can accommodate a user-supplied 3.6V ER26500 lithium battery for backup.
For installations requiring Modbus communication rather than BACnet, the TUF-320-MD uses the same DN32 flowmeter body and specifications with Modbus RTU communication.
Key Benefits
- Combines ultrasonic flow measurement, temperature sensing and energy calculation in one compact unit
- DN32 configuration with a 6 m³/h permanent rated flow
- No moving parts, helping reduce maintenance requirements
- 8-digit LCD for local temperature, flow and energy readings
- BACnet® MSTP communication for BMS and utility billing integration
- IP65-rated housing with brass and 316L stainless steel wetted parts
- 24 Vac/Vdc power supply with optional lithium battery backup
- Suitable for tenant-level heating and cooling energy metering
- Free UAE-wide shipping on genuine Dwyer stock
- Call +971 6 5436933 for pricing and availability
Who This Product Is Best For
- Landlords and property managers requiring tenant-level heating or cooling energy billing
- Building owners monitoring chillers, boilers, radiators or fan coil units
- BMS integrators using BACnet® MSTP for energy and utility sub-metering
- HVAC and building-services professionals requiring compact ultrasonic energy metering
- Facilities teams monitoring heating and cooling consumption
How to Specify & Commission It
- Confirm that the DN32 pipe size and 6 m³/h permanent rated flow are suitable for the installation.
- Install the meter using the G1-1/4B threaded connection, following the specified mounting orientation. On horizontal pipe runs, install at least 45° from horizontal.
- Connect the 24 Vac/Vdc power supply and install the optional 3.6V ER26500 lithium battery if backup is required.
- Connect the BACnet® MSTP communication output to the compatible BMS or billing system and configure the required communication parameters.
- Verify the flow, temperature and energy readings on the local 8-digit LCD before commissioning and handover.
Frequently Asked Questions
What pipe size and flow rate is the Dwyer TUF-320-BN designed for?
The TUF-320-BN is designed for DN32 piping with a 6 m³/h permanent rated flow.
What communication protocol does the TUF-320-BN use?
This variant uses BACnet® MSTP communication for integration with compatible building management and utility billing systems.
What is the accuracy of the TUF-320-BN?
The meter provides BTU accuracy Class 2 according to EN1434/CJ128, with flow accuracy of ±(2+(0.02 Qp/Q))% and temperature accuracy of ±0.1°C (±0.18°F).
What is the maximum operating pressure?
The maximum operating pressure is 232 psi (16 bar).
What power supply does the TUF-320-BN require?
The meter operates on 24 Vac/Vdc. A user-supplied 3.6V ER26500 lithium battery can also be used for backup.
What is the difference between the TUF-320-BN and TUF-320-MD?
Both models use the same DN32 flowmeter body and specifications. The communication protocol differs: the TUF-320-BN uses BACnet® MSTP, while the TUF-320-MD uses Modbus RTU.
Is the TUF-320-BN suitable for tenant billing?
Yes. Its integrated flow measurement, temperature sensing and energy calculation make it suitable for tenant-level heating and cooling energy monitoring and utility billing applications.
Is genuine stock available with UAE shipping?
Yes. Genuine Dwyer stock with free UAE-wide shipping is available. Call +971 6 5436933 for current pricing and availability.
Request a Quote Today
For pricing or to place an order, contact General Tech Services LLC, UAE.
Call +971 6 5436933 | www.generaltechshop.ae
