Brand: pFlow

pFlow E3E Ultrasonic BTU Meter

Name: pFlow E3E Ultrasonic BTU Meter – Datasheet & Price Quote
Brand: pFlow

Description

Overview

The pFlow E3E Ultrasonic BTU Meter is a non-intrusive, clamp-on thermal energy measurement instrument engineered for modern Building Management Systems (BMS) and Mechanical, Electrical, and Plumbing (MEP) infrastructure. Designed by pFlow Gentos for the growing demand of energy audit compliance and smart-building analytics, the pFlow E3E delivers high-accuracy thermal energy readings using ultrasonic transit-time technology, Power over Ethernet (PoE) connectivity, and native MQTT and HTTP protocols for seamless cloud integration. This next-generation BTU meter is purpose-built for facilities that require real-time energy monitoring without any interruption to the existing piping network.

As the official authorized partner and exclusive regional representative for pFlow Gentos, Seven Star LLC proudly supplies the pFlow E3E across Oman and the GCC. Every unit is sourced directly from the manufacturer, with dedicated local technical support through our Muscat-based instrumentation division. Facility managers, consulting engineers, and EPC contractors across the Sultanate of Oman rely on Seven Star LLC for rapid availability, commissioning guidance, and lifecycle support for the entire pFlow thermal energy metering range.

Measurement Principle

The pFlow E3E operates on the ultrasonic transit-time difference principle. A pair of clamp-on transducers mounted on the exterior surface of the pipe alternately emit and receive ultrasonic pulses along and against the direction of flow. When liquid moves through the pipe, the downstream pulse arrives faster than the upstream pulse, and the precise time difference between these two signals is directly proportional to the volumetric flow rate. The pFlow E3E integrates this flow measurement with temperature differential data from two PT1000 clamp-on temperature sensors positioned at the supply and return lines to calculate thermal energy transfer in real time.

Because the transducers are mounted externally, the pFlow E3E introduces no moving parts, creates no pressure drop, and poses zero contamination risk to the process fluid. This non-invasive architecture is particularly critical in chilled-water and heating circuits within BMS environments, where maintaining closed-loop integrity is essential. The absence of wetted components also eliminates the risk of leaks, reduces maintenance to near zero, and allows the meter to be installed, relocated, or removed without shutting down the system — a significant advantage for retrofit projects and live facility upgrades.

Engineering Design of the pFlow E3E

The pFlow E3E features a compact, integrated form factor housing both the ultrasonic flow measurement module and a 1.44-inch color LCD display (128×128 resolution) within a robust enclosure. The unit supports pipe diameters from DN20 to DN80, covering the majority of secondary HVAC distribution lines, chilled-water branches, and heating loops found in commercial and institutional buildings. Installation requires only a pair of clamp-on ultrasonic transducers affixed externally to the pipe surface and two PT1000 clamp-on temperature probes — no pipe cutting, welding, or process shutdown is necessary.

Connectivity is one of the defining engineering features of the pFlow E3E. Powered and networked via a single PoE (Power over Ethernet) cable, the unit eliminates the need for a dedicated power supply and simplifies cabling for MEP contractors. Data transmission utilizes HTTP and MQTT protocols, enabling direct integration with cloud-based energy management platforms, BMS head-ends, and the pFlow MeterTube application for remote monitoring via PC or mobile. This single-cable architecture makes the pFlow E3E exceptionally efficient to deploy at scale across multi-zone buildings.

Key Features of the pFlow E3E

The pFlow E3E Ultrasonic BTU Meter delivers an advanced set of capabilities designed for energy professionals and system integrators:

Non-intrusive clamp-on installation requires zero pipe modification, enabling rapid deployment on live chilled-water and heating systems without process interruption.
Power over Ethernet (PoE) combines power delivery and data communication into a single cable, reducing installation costs and simplifying wiring architecture for MEP projects.
Native MQTT and HTTP protocol support enables direct cloud connectivity and seamless integration with modern BMS platforms and IoT energy management ecosystems.
Integrated 1.44-inch color LCD display with 128×128 resolution provides clear, real-time visualization of flow rate, temperatures, and cumulative thermal energy on site.
Dual PT1000 clamp-on temperature sensors deliver precise supply-and-return temperature differential measurement for accurate BTU calculation.
Wide pipe compatibility from DN20 to DN80 covers the majority of secondary HVAC distribution branches in commercial, institutional, and hospitality buildings.
Flow velocity measurement range of 0.03 to 5.0 m/s with ±2.0% accuracy ensures reliable readings across varying load conditions from partial to peak demand.
MeterTube cloud platform and mobile application provide remote access to real-time and historical energy data, supporting energy audit documentation and compliance reporting.

Industrial Applications

The pFlow E3E is engineered for deployment across a broad spectrum of thermal energy measurement scenarios in commercial and industrial facilities. In district cooling networks and centralized chilled-water plants, the meter enables accurate sub-metering of individual building connections or zone branches, supporting fair energy billing and consumption optimization. Within commercial HVAC systems, the pFlow E3E monitors thermal energy delivery across air handling units, fan coil loops, and chiller plant distribution headers. Hospital complexes, pharmaceutical production facilities, and data center cooling infrastructures across Oman also benefit from the meter’s non-invasive installation and PoE-powered connectivity, particularly in environments where system downtime for instrumentation installation is unacceptable.

As the officially authorized partner for pFlow Gentos, Seven Star LLC distributes the pFlow E3E throughout the Sultanate of Oman, Muscat, and the wider GCC region. Availability and lead time are confirmed at quotation, and our instrumentation engineers provide technical support with selection and configuration. Whether the application is a large-scale hospitality development in Muscat, an industrial facility in the Sohar Free Zone, or an institutional campus in Salalah, Seven Star LLC delivers the pFlow E3E with full manufacturer backing and dedicated regional after-sales service.

Technical Specifications

The following table summarizes the key technical parameters of the pFlow E3E Ultrasonic BTU Meter:

Parameter	Specification
Model	pFlow E3E
Measurement Principle	Ultrasonic Transit-Time Difference
Pipe Size Range	DN20–DN80
Flow Velocity Range	0.03–5.0 m/s
Accuracy	±2.0% of measured value
Temperature Sensors	2× PT1000 Clamp-On
Display	1.44″ Color LCD, 128×128
Power Supply	Power over Ethernet (PoE)
Communication Protocols	Ethernet (PoE), HTTP, MQTT
Cloud Platform	MeterTube (PC & Mobile)
Installation Type	Non-Intrusive Clamp-On
Application	BMS, MEP, HVAC Energy Metering

Request a Quote for pFlow E3E Ultrasonic BTU Meter

As the authorized partner for pFlow Gentos in Oman and the GCC, Seven Star LLC invites facility engineers, MEP consultants, and procurement teams to request a formal quotation for the pFlow E3E Ultrasonic BTU Meter. Availability and lead time are confirmed at quotation, and our instrumentation division provides full technical datasheets, system integration guidance, and technical support. Contact Seven Star LLC today to discuss your thermal energy metering requirements and benefit from technical support with selection and a quotation that confirms lead time and terms across the Sultanate of Oman and the GCC.

Other Models in the pFlow E3 Ultrasonic Heat & BTU Meter Series Range

Seven Star LLC supplies models from the pFlow E3 Ultrasonic Heat & BTU Meter Series range in Oman and the GCC. Compare the related models below and request a quote for the one that matches your application.

Model	Category
pFlow E3 Compact WiFi Ultrasonic Heat Meter	Heat & BTU Energy Meters	View details
pFlow E3R LoRaWAN Heat Meter	Heat & BTU Energy Meters	View details
pFlow E3CL Clamp-On Thermal Energy Flow Meter	Heat & BTU Energy Meters	View details
pFlow E3E Ultrasonic BTU Meter	Heat & BTU Energy Meters	You are viewing this model
pFlow E3RO Ultrasonic Thermal Energy Meter	Heat & BTU Energy Meters	View details
pFlow E3W BTU Meter for Temperature Control	Heat & BTU Energy Meters	View details

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About brand

Clamp-on ultrasonic flow measurement is what pFlow does. The sensors strap to the outside of the pipe and measure liquid flow by transit time, so the line is not cut and nothing touches the fluid. The brand comes from Gentos, an instrument maker focused on ultrasonic flowmeters, flow sensors and heat and cooling energy meters.

Seven Star LLC is the pFlow agency for Oman and the GCC, listing pFlow ultrasonic flowmeters in fixed, portable and LoRaWAN versions, BTU meters and LoRaWAN flow control valves.

pFlow flowmeter families

Most of the listed models are compact clamp-on sensors grouped by pipe size and duty. The GF family (GFCL, GFR, GF-S-CL, GF-SH-CL for hot water and GF-GH-CL for immersion cooling) and the MF micro flowmeters (MFR, MFCL) serve cooling and process loops on small and medium pipes. The MP series are plug-and-play flow sensors, including the MP801 and a LoRaWAN version. The D116-BTU is a wall-mounted ultrasonic BTU meter, the P116 a portable flowmeter for surveys, and the F8 a fixed meter used in aquaculture. Gentos also builds the F3 series clip-on flowmeters, including a panel-mount version. The VC200-R is a LoRaWAN ball valve that works as a flow switch.

Where pFlow meters are used

The manufacturer documents use in liquid cooling for data centers and semiconductor plants, chilled and hot water metering in central air conditioning, water supply networks and irrigation, aquaculture, and utility lines in petrochemical and power plants.

Ordering a pFlow ultrasonic flowmeter: what we need

Clamp-on meters are selected from pipe data. Send the pipe outside diameter, wall thickness and material, any liner, the liquid and its temperature, the expected flow span and the straight pipe length available. Add the output you need (4-20 mA, pulse, Modbus, LoRaWAN) and the supply voltage. For BTU meters include the supply and return temperature span.

FAQ

Questions about the pFlow E3E Ultrasonic BTU Meter

Answers from our engineering team on installation, compatibility and integration.

01What makes the pFlow E3E ideal for BMS and MEP energy monitoring?

The pFlow E3E is purpose-built for building management and MEP infrastructure with Power over Ethernet (PoE) connectivity that combines power and data into a single cable. Its native MQTT and HTTP protocols enable direct integration with modern BMS platforms and cloud-based energy management systems. This architecture eliminates the need for protocol gateways in most IoT-ready building environments.

02How does the pFlow E3E reduce installation costs and downtime?

As a clamp-on ultrasonic meter, the pFlow E3E mounts externally on the pipe surface without any cutting, welding, or system shutdown. The PoE single-cable design further reduces wiring complexity and labor hours. This allows MEP contractors to deploy thermal energy metering on live chilled-water and heating systems in a fraction of the time required by inline alternatives.

03What pipe sizes and materials are compatible with the pFlow E3E?

The pFlow E3E supports pipe diameters from DN20 to DN80, covering the majority of secondary HVAC distribution lines, chilled-water branches, and heating loops in commercial and institutional buildings. The clamp-on transducers are compatible with standard metallic and plastic pipe materials commonly used in building services installations.

04Can the pFlow E3E integrate with legacy building automation systems?

The pFlow E3E primarily communicates via Ethernet using HTTP and MQTT protocols, making it natively compatible with modern IP-based BMS platforms. For legacy systems that require Modbus RTU or BACnet, a protocol gateway may be needed. Seven Star LLC can advise on the most suitable integration approach for your specific building automation infrastructure in Oman and the GCC.

05Is Seven Star LLC an authorized representative for pFlow Gentos products?

Yes, Seven Star LLC is the official authorized partner and exclusive regional representative for pFlow Gentos in the Sultanate of Oman and the GCC. All pFlow products supplied by Seven Star LLC come with manufacturer calibration documentation and dedicated local technical support from our Muscat-based instrumentation division.