Overview

The pFlow D114 Wall-Mount Ultrasonic Flowmeter represents a significant advancement in non-intrusive flow measurement technology. Engineered for exceptional performance and reliability, the D114 is a cost-effective solution for a wide range of industrial applications. Its innovative design allows for accurate and repeatable flow measurement from outside the pipe, eliminating the need for pipe cutting, system shutdowns, or costly installations. This makes the pFlow D114 an ideal choice for retrofitting existing systems and for applications where process interruption is not an option. The flowmeter is designed to deliver precise measurements for various liquids, making it a versatile tool for monitoring and process control. With its robust construction and advanced features, the pFlow D114 provides a dependable and economical alternative to traditional in-line flowmeters, without compromising on accuracy or performance. Its user-friendly interface and simple installation process further enhance its value, reducing both setup time and operational costs. The pFlow D114 is particularly well-suited for industries that require a balance of performance, affordability, and ease of use, such as water management, HVAC systems, and aquaculture.

Measurement Principle

The pFlow D114 operates on the highly accurate transit-time ultrasonic measurement principle. This advanced technology relies on a pair of ultrasonic transducers that are externally mounted on the pipe wall. These transducers function as both transmitters and receivers of ultrasonic signals. The measurement process begins with the upstream transducer sending an ultrasonic pulse through the pipe wall and the liquid medium to the downstream transducer. The time taken for this signal to travel from the first transducer to the second is precisely measured. Immediately after, the downstream transducer sends a signal back to the upstream transducer, and this transit time is also recorded. When the liquid is flowing, the ultrasonic signal traveling in the direction of the flow will have a shorter transit time compared to the signal traveling against the flow. The difference between these two transit times is directly proportional to the velocity of the liquid in the pipe. The flowmeter’s sophisticated electronics process this time difference, along with the pipe’s dimensions and the fluid’s properties, to calculate the volumetric flow rate with a high degree of accuracy. This non-intrusive method ensures that there is no pressure drop, no moving parts to wear out, and no risk of leakage, making it a highly reliable and maintenance-free solution for flow measurement.

Engineering Design

The pFlow D114 is meticulously engineered to withstand the rigors of industrial environments while delivering precise and stable measurements. The main unit, or transmitter, is housed in a rugged, IP65-rated enclosure, providing excellent protection against dust and water ingress. This robust construction ensures long-term reliability, even in harsh operating conditions. The ultrasonic transducers are designed for even greater durability, featuring an IP68 rating that allows them to be permanently submerged in water. This makes the D114 suitable for applications where the sensors may be exposed to flooding or high levels of moisture. The flowmeter supports a wide range of pipe sizes, from 25mm to 600mm in diameter, offering exceptional versatility for various piping systems. The system’s electronics are designed for high performance and low power consumption, ensuring cost-effective operation over the long term. For seamless integration into industrial control systems, the pFlow D114 is equipped with multiple output options, including RS485 Modbus and a 4-20mA analog output. These industry-standard communication protocols allow for easy data acquisition and remote monitoring, enabling operators to track flow rates and manage processes with greater efficiency. The thoughtful engineering behind the pFlow D114 ensures that it is not only a powerful measurement tool but also a practical and reliable component of any modern industrial facility.

Key Features

• Non-Intrusive Measurement: Clamp-on transducers eliminate the need for pipe cutting or process shutdown, ensuring zero pressure drop and no risk of leakage.
• High Accuracy: Delivers a measurement accuracy of ±2.0%, providing reliable data for process control and monitoring.
• Wide Pipe Size Range: Accommodates pipe diameters from 25mm to 600mm, offering flexibility for a variety of industrial piping systems.
• Robust Construction: Features an IP65-rated transmitter and IP68-rated transducers, ensuring durability and long-term performance in demanding environments.
• Versatile Outputs: Equipped with RS485 Modbus and 4-20mA outputs for seamless integration with SCADA, PLC, and other industrial automation systems.
• Cost-Effective Solution: Provides a high-performance, low-maintenance alternative to traditional in-line flowmeters at an economical price point.
• User-Friendly Interface: A clear display and intuitive menu system simplify setup, configuration, and operation.

Industrial Applications

The pFlow D114 Wall-Mount Ultrasonic Flowmeter is engineered for versatility and is successfully deployed across a multitude of industries where accurate and non-invasive flow measurement is critical. Its cost-effective design and reliable performance make it a preferred choice for a variety of applications:

• Water and Wastewater Management: The D114 is extensively used for monitoring flow rates in water treatment plants, distribution networks, and wastewater processing facilities. Its non-intrusive nature is ideal for large-diameter pipes and for retrofitting into existing infrastructure without service interruption.
• HVAC and Building Management Systems: In heating, ventilation, and air conditioning (HVAC) systems, the pFlow D114 provides accurate measurement of chilled and hot water flow, enabling precise energy management and system optimization. Its ability to measure flow without cutting into pipes is a significant advantage in commercial and residential buildings.
• Aquaculture and Fish Farming: The flowmeter plays a vital role in aquaculture by monitoring water circulation in tanks and raceways. Maintaining optimal water flow is essential for fish health and growth, and the D114 provides the reliable data needed to manage these systems effectively.
• Light Industrial Processing: The pFlow D114 is also suitable for a range of light industrial applications, such as chemical dosing, food and beverage processing, and pulp and paper manufacturing. Its ability to handle various liquids and its robust construction ensure dependable performance in these environments.

Technical Specifications

Frequently Asked Questions

• What makes the pFlow D114 a non-intrusive flowmeter?

  The pFlow D114 is a non-intrusive flowmeter because it measures the flow of liquid from outside the pipe. Its clamp-on ultrasonic transducers are simply attached to the pipe’s exterior, eliminating the need to cut the pipe or interrupt the process. This design prevents pressure loss and minimizes installation time and cost.

• How does the pFlow D114 adapt to different pipe materials?

  The device is engineered for versatility and can be configured for a wide array of common pipe materials, including steel, copper, PVC, and more. During setup, the user selects the pipe material from a pre-programmed menu, and the flowmeter’s algorithm automatically adjusts its calculations to ensure measurement accuracy is maintained.

• Is the pFlow D114 wall-mount flowmeter suitable for outdoor installations?

  Yes, the pFlow D114 is designed for durability in various conditions. The transmitter is housed in an IP65-rated enclosure, protecting it from dust and water jets. Furthermore, the transducers have a robust IP68 rating, meaning they are fully waterproof and can even be submerged, making this ultrasonic flowmeter a reliable choice for outdoor and demanding environments.

• What is the primary advantage of having a Modbus flowmeter?

  The inclusion of RS485 Modbus output allows the pFlow D114 to be seamlessly integrated into modern industrial automation and control systems. As a Modbus flowmeter, it can easily communicate data to PLCs, SCADA systems, and other centralized monitoring platforms, enabling real-time data logging, process automation, and remote system management.

• Can the pFlow D114 be used for liquids other than water?

  While it is an excellent solution for water management and HVAC applications, the pFlow D114 can measure flow for a variety of other acoustically conductive liquids. It is important to ensure the liquid does not contain excessive bubbles or solids, which can interfere with the ultrasonic signal. For specific liquid compatibility, consulting the product datasheet is recommended.

• How frequently does this ultrasonic flowmeter require calibration?

  One of the key benefits of the pFlow D114’s transit-time technology and solid-state design is its long-term stability. The device does not have moving parts that wear over time, so it maintains its accuracy for extended periods. Routine calibration is generally not required, reducing maintenance overhead and ensuring a low total cost of ownership.

Request a Quote

Contact Seven Star LLC to request a quote (RFQ) or download the official pFlow D114 datasheet. Our engineering team is ready to assist with your flow measurement requirements.