UFM2/UBT User Manual
Issue 1.1b July 20 Page 1
1 INTRODUCTION
1.1 General Description
This manual describes the installation and use of the UFM2 flow meter and UBT energy meter:
• UFM2 is an ultrasonic clamp-on flow meter for measuring flow rate and total flow with a volume
pulse output and optional Modbus or 4-20 mA flow proportional output. It can be used as a
standalone meter or as part of an integral management system.
• UBT is an ultrasonic clamp-on thermal, heat/energy meter. It uses ultrasound to measure flow
rate and is also equipped with PT100 temperature sensors to measure flow and return
temperatures. The energy meter displays energy rate and totalised energy with pulse output
and communication options, so it can be used as a standalone meter or as an integral part of
Automatic Monitoring & Targeting (aM&T) or a Building Energy Management System (BEMS).
The electronics and sensor housings form an integral unit which attaches to the pipe using the
supplied hose clips. Power to the unit is provided by an external 12-24 VDC / 24 VAC power supply
(7 W / 7 VA minimum). The unit operates on steel, stainless steel, copper and plastic pipes with
internal diameter in the range 0.8” (20 mm) to 6.5” (165 mm) depending on the product purchased.
The models can also be supplied with Modbus digital communication options.
Typical applications:
NOTE:
The UBT default configuration is:
• Instrument Type: Heating
• Installation Side: Return
• Fluid: Water
Return refers to the location of the flow measurement relative to flow circuit.
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