pFlow D116-CP037 Ultrasonic Flowmeter – Industrial Clamp-On Transit-Time

Overview

The pFlow D116-CP037 Ultrasonic Flowmeter is an advanced industrial transit-time ultrasonic measurement system engineered for reliable, non-intrusive liquid flow monitoring across demanding applications. Designed around clamp-on CP037 transducers, this model eliminates the need for pipe cutting, welding, or shutdown, allowing operators to implement precision measurement without disturbing process continuity.

Unlike intrusive flowmeters that require wetted sensors, the D116-CP037 mounts externally to the pipe surface, using high-frequency ultrasonic signals to calculate flow velocity through transit-time differential analysis. This technology ensures accurate volumetric flow computation while preserving pipe integrity and eliminating pressure loss.

The system is optimized for industrial environments where reliability, accuracy, and flexibility are critical — including water treatment plants, HVAC infrastructure, manufacturing facilities, chemical processing, energy systems, and carbon monitoring installations.

Download Datasheet pFlow D116-CP037

Engineering Principle – Transit-Time Ultrasonic Measurement

The D116-CP037 operates on the transit-time method, which measures the time difference between ultrasonic pulses traveling upstream and downstream within the fluid.

When fluid is stationary, upstream and downstream transit times are equal.

When fluid flows, the pulse traveling with the flow arrives faster than the pulse traveling against it.

The microprocessor calculates this differential time and converts it into:

• Flow velocity

• Volumetric flow rate

• Cumulative totalized flow

This method provides several engineering advantages:

• No moving parts

• No pressure drop

• No internal wear

• No obstruction

• Long operational life

• High repeatability

Compared to turbine flowmeters, there is no rotor fatigue.

Compared to electromagnetic flowmeters, conductivity is not required.

Compared to insertion meters, there is no pipe penetration risk.

Why D116-CP037 is Important for Industrial Projects

This model is not a basic portable flow meter. It is an industrial-grade solution with:

• ±1.0% measurement accuracy

• ~0.3% repeatability

• Bi-directional flow measurement

• Multi-signal output (4-20 mA, pulse, RS485 Modbus)

• Data logging capability

• Wide pipe size compatibility (1″–48″ / 25–1200 mm)

• IP65 transmitter enclosure

• IP68 CP037 clamp-on transducers

This makes it suitable for long-term installation in process environments, not just temporary measurement.

Installation Advantage – Zero Process Interruption

Because the CP037 sensors clamp externally:

• No cutting

• No welding

• No shutdown

• No contamination risk

• No leak potential

This is particularly valuable in:

• Continuous process lines

• Critical cooling systems

• Municipal water networks

• Chemical pipelines

• Carbon audit systems

Installation downtime reduction can significantly reduce operational costs.

Industrial Applications

The pFlow D116-CP037 Ultrasonic Flowmeter is used in:

Water & Wastewater

Flow monitoring in treatment plants, distribution systems, and effluent measurement.

HVAC & Energy

Chilled water flow monitoring, district cooling, heat exchange loops.

Industrial Manufacturing

Process water control, cooling circuits, production line monitoring.

Carbon Audit & ESG Reporting

Accurate flow data collection for environmental performance documentation.

Chemical & Process Plants

Liquid monitoring without chemical exposure to internal sensors.

Utility & Municipal Systems

Flow tracking in large diameter pipelines.

Technical Specifications

Engineering Notes

The D116-CP037 performs best when:

• Pipe interior is free from heavy scaling

• Fluid is relatively clean (minimal solids or bubbles)

• Proper sensor spacing is configured via built-in calculator

• Straight pipe run recommendations are followed

Because it uses ultrasonic propagation, excessive aeration or heavy slurry conditions may reduce signal quality. For such cases, alternate technologies should be evaluated.

Competitive Positioning

Compared to electromagnetic flowmeters:

✔ No conductivity requirement

✔ No electrode fouling

✔ No internal corrosion

Compared to turbine meters:

✔ No mechanical wear

✔ No moving parts

✔ No pressure drop

Compared to insertion flow meters:

✔ Non-intrusive

✔ No leakage risk

✔ No pipe penetration

This makes D116-CP037 a flexible retrofit solution.

FAQ

Q1: Does the pFlow D116-CP037 require pipe cutting?

No. It is clamp-on and fully non-intrusive.

Q2: Can it measure reverse flow?

Yes. It supports bi-directional flow measurement.

Q3: What is the maximum pipe size supported?

Up to 1200 mm (48 inches).

Q4: What outputs are available?

4-20 mA analog, pulse output, and RS485 Modbus.

Q5: Is it suitable for industrial permanent installation?

Yes. It is designed for industrial environments with IP65/IP68 protection.

Q6: Can it integrate with PLC or SCADA?

Yes. Via RS485 Modbus or analog output.

Call to Action

For pricing, project consultation, lead time, and technical selection assistance regarding the pFlow D116-CP037 Ultrasonic Flowmeter, contact Seven Star LLC. Our engineering team will assist in proper sizing, installation planning, and system integration.