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Series-UBT

Clamp-On Ultrasonic Thermal Energy Meter for Heat/Energy Metering

Models In Stock
  • Save on installation costs with non-invasive pipe measurement
  • Simplified installation with all necessary components included, such as converter, sensor, cables and mounting accessories
  • Fit application requirements with compact and lightweight design, that can be easily installed, all in one clamp-on unit intended for homogeneous liquids that contain no air
  • Cut down evaluation time with easy-to-read text displaying both energy rate and totalized energy with pulse output and communication options with a convenient backlight for visual comfort
Series-UBT
From C$ 4,991.78
Models In Stock
Clamp-On Ultrasonic Thermal Energy Meter for Heat/Energy Metering Series-UBT Series-UBT
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Product Overview
  • Accuracy ± 3 %
  • Accuracy Detail ± 3% of flow reading for velocity rate >1 ft/s (0.3 m/s)
  • Applications Energy Management Systems
  • Display Note Backlit: 2.28˝ x 0.43˝ (58 mm x 11 mm), 2 line x 16 characters
  • Display Type LCD
  • Electrical Connection Cable
  • Enclosure Ratings IP54
  • Flow Direction Any
  • Linear Flow Rate, Max 32 ft/s
  • Linear Flow Rate, Min 0.3 ft/s
  • Materials Polycarbonate
  • Mounting Orientation None
  • Operating Temperature, Max 122 °F
  • Operating Temperature, Min 32 °F
  • Output Detail Pulse: 1 optoisolated MOSFET relay, 500 mA max, 166 pps max, 200 Hz max
  • Output Signal DC Pulse
  • Pipe Size, Max 4 in
  • Pipe Size, Min 45355 in
  • Power Consumption DC: 7 W / AC: 7 VA
  • Process Temperature, Max 185 °F
  • Process Temperature, Min 32 °F
  • Relative Humidity 90% RH @ 122°F
  • Repeatability ± 0.15%
  • Repeatability Note ± 0.15% of measured value
  • Series ID Series-UBT
  • Supply Power Note 12 V to 24 V ± 10% AC/DC at 7 watts per unit. Optional plug-in 12 V power supply
  • Supply Power Type AC/DC
  • Supply Voltage 12 to 24 Vac/Vdc
  • Tube Wall Thickness 0.39 in
  • Weight 1.1 lb

Supported Applications

The Dwyer Series UBT is a clamp-on ultrasonic thermal energy meter designed for heating and chilled water systems. It measures flow rate, totalized flow, supply/return temperatures via PT100 sensors, and calculates both energy rate and totalized energy.

  • Hot water metering and flow measurement
  • Chilled water metering and flow measurement
  • Potable water metering and flow measurement
  • Process water metering and flow measurement
  • Ultra-pure water metering and flow measurement

The series is configured for use on steel, stainless steel (SS), copper, or plastic pipes. The default configuration supports heating service with return-side installation.

Operating Conditions & Performance

The Series UBT operates within a process temperature range of 32 to 185°F (0 to 85°C) and an ambient temperature range of 32 to 122°F (0 to 50°C). It is rated for humidity up to 90% RH at 122°F (50°C) max. The enclosure material is plastic polycarbonate with an IP54 rating.

Performance specifications include:

  • Flow Velocity Range: 0.3 ft/s to 32 ft/s (0.1 m/s to 10 m/s)
  • Accuracy: ±3% of flow reading for velocity rate >1 ft/s (0.3 m/s)
  • Repeatability: ±0.15% of measured value
  • Media Compatibility: Clean water with <3% by volume of particulate content, or up to 30% ethylene glycol

The unit weighs 1.10 lb (0.5 kg) and supports any flow direction and mounting orientation.

Configuration Options

The Series UBT is available in configurations supporting specific pipe sizes, output types, and communication options. The series covers internal pipe diameters from 3/4 to 7" (25 to 180 mm), with applicable wall thicknesses of 0.02 to 0.36" (0.5 to 10 mm).

Output and Communication Options

  • Pulse Output: 1 optoisolated MOSFET relay, 500 mA max, 166 pps max, 200 Hz max (Standard on all models)
  • Digital Communication: Optional Modbus® communication

Pipe Size Configurations

  • -4 Code: Supports pipe outside diameters 3/4 to 4" (25 to 115 mm)
  • -6 Code: Supports pipe outside diameters 5 to 7" (125 to 180 mm)*

*Pipe size is dependent on pipe material and internal diameter.

Power Supply

  • Voltage: 12 V to 24 V ±10% AC/DC at 7 watts per unit (max power consumption: 7 W DC or 7 VA AC)
  • Connection: External supply with optional plug-in 12 V power supply

Key Product Differences

The Series UBT model numbers follow the format UBT - <OUTPUT TYPE> - <PIPE SIZE>. The available variants distinguish between output capabilities and pipe size ranges:

  • -1 Output Type: Pulse output only
  • -2 Output Type: Pulse and Modbus® communication
  • -4 Pipe Size Code: 3/4 to 4" (25 to 115 mm)
  • -6 Pipe Size Code: 5 to 7" (125 to 180 mm)

The series includes a backlit display with an active area of 2.28" x 0.43" (58 mm x 11 mm), providing 2 lines by 16 characters. Electrical connections utilize female SMB coaxial connectors and include a 16.4' (5 m) cable.

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