Product Overview

BTU2X is designed for engineers, energy auditors, facility teams, commissioning teams and maintenance teams who need to measure flow without permanently modifying the pipe. Its portability makes it suitable for checking flow across multiple points in a plant or building.

The instrument can be used to verify system values over an extended period, identify pump or valve issues, validate existing flow meters, support chilled water balancing, collect temporary flow data or support energy audit and measurement & verification activities.

Key Features

Typical Applications

Technical Specifications

Accessories Included

The BTU2X portable kit is supplied with the required accessories for field flow measurement and portable operation.

Flow and BTU Measurement

For flow measurement, the BTU2X uses clamp-on ultrasonic transducers installed on the pipe surface. The meter calculates velocity and flow rate based on the upstream and downstream transit-time difference.

For BTU / energy measurement, the meter uses flow rate together with inlet and outlet temperature measurement. By measuring the volumetric flow rate of the heat-transfer liquid and the temperature difference across the system, the delivered or removed energy can be calculated.

Ordering Code

Model Examples

Why Use BTU2X?

BTU2X is useful when flow must be checked quickly without installing an inline meter. It is especially practical for energy audits, troubleshooting, pump verification, chilled water balancing and temporary monitoring where permanent flow meters are not installed.

• No pipe cutting or tapping for clamp-on applications.
• No pressure head loss and no moving parts.
• Portable unit for checking multiple points across a site.
• Suitable for flow verification, BTU measurement and extended data logging.
• Useful for pump, valve and sensor performance verification.
• Supports 4–20mA and RS485 output for external data transmission.
• Can support temporary measurement for energy audit and M&V projects.

Integration with IoTWatt 4.0

BTU2X can be used to support IoTWatt 4.0 energy audit and system verification work. Temporary flow and BTU measurements can be used to validate chilled water system performance, pump operation, heat exchanger performance and energy saving opportunities.

• Use BTU2X to verify chilled water flow before permanent metering is installed.
• Use BTU function to support chiller COP and chilled water energy analysis.
• Compare temporary flow data with IoTWatt 4.0 power and equipment operation data.
• Use RS485 or 4–20mA output for external logging where required.
• Support energy audit, M&V, EECA reporting and retrofit project validation.

Recommended Selection Checklist

• Confirm whether the requirement is flow-only or flow + BTU / energy measurement.
• Confirm pipe size, material, wall thickness and pipe surface condition.
• Confirm liquid type and whether it is a suitable single-medium liquid for ultrasonic measurement.
• Confirm required transducer type: TT02 standard temperature or TT03 high-temperature option.
• Confirm cable length: standard 5m or custom length up to 30m.
• Confirm whether PT1000 clamp-on temperature sensors are required.
• Confirm logging interval, SD card data requirement and measurement duration.
• Confirm whether 4–20mA or RS485 output is required for external monitoring.
• Check straight pipe length and avoid locations with heavy turbulence, bubbles or valve disturbance.