Brand: pFlow

pFlow E3R LoRaWAN Heat Meter

Name: pFlow E3R LoRaWAN Heat Meter – Datasheet & Price Quote
Brand: pFlow

Description

Overview

The pFlow E3R LoRaWAN Heat Meter by Gentos represents a major technological leap in non-invasive thermal energy and BTU flow measurement. Designed specifically for smart energy management, life-science facilities, and district cooling networks, this clip-on ultrasonic meter eliminates the need for pipe modifications or system downtime. As the official authorized partner and exclusive regional representative for pFlow Gentos, Seven Star LLC proudly supplies this state-of-the-art metering solution to critical infrastructure projects, commercial HVAC networks, and industrial complexes across the Sultanate of Oman, Muscat, and the wider GCC region.

By leveraging the power of long-range wireless data transmission, this instrument allows facility managers to monitor thermal energy consumption in real-time without the massive expense of hardwired telemetry. This empowers industrial operators and building engineers to optimize energy efficiency, identify hidden system inefficiencies, reduce operational overheads, and confidently support rigorous corporate carbon footprint reduction initiatives.

Measurement Principle

The foundational operational mechanism of the heat meter relies on a highly accurate, dual-layered diagnostic approach: transit-time ultrasonic flow measurement coupled with high-precision differential temperature sensing. To determine the volumetric flow rate, the unit utilizes external clamp-on ultrasonic transducers that transmit and receive high-frequency acoustic signals through the pipe wall and into the fluid medium. By calculating the exact time difference (transit-time) between the upstream and downstream signal propagation, the internal microprocessor determines the precise fluid velocity.

Simultaneously, the instrument calculates thermal energy (measured in BTU or Joules) by utilizing two external PT1000 clamp-on temperature sensors. These sensors are attached to both the supply and return lines of the heating or cooling circuit. The meter’s algorithm computes the exact temperature differential (ΔT) and integrates this data with the real-time volumetric flow rate. The final energy consumption data is then wirelessly transmitted via the integrated LoRaWAN communication protocol. This low-power, wide-area network technology ensures that telemetry data is streamed directly to cloud platforms or central Building Management Systems (BMS) over ultra-long distances without requiring complex physical wiring.

Engineering Design of the pFlow E3R LoRaWAN Heat Meter

The physical architecture and electronic engineering of the pFlow E3R LoRaWAN Heat Meter are meticulously optimized for rapid deployment and long-term durability in challenging industrial environments. The device features an all-in-one, integrated transmitter and transducer design that clips directly onto the exterior of the pipe. This non-intrusive architecture means the fluid medium is never exposed to the sensor, completely eliminating the risk of pressure drops, internal pipe scaling, or contamination in pure-water pharmaceutical applications.

The transmitter is housed within a rugged, IP54-rated enclosure, protecting the sensitive internal electronics from dust and moisture commonly found in humid plant rooms or industrial basements. The front panel features a crisp, 1.44-inch high-resolution colorful LCD screen equipped with four tactile touch keys for simple, on-site parameter configuration. The unit is universally adaptable to a wide range of standard pipe sizes, specifically engineered to accommodate diameters from DN20 up to DN80 (21mm to 80mm). Furthermore, the acoustic algorithms are factory-calibrated to penetrate various standard pipe materials, including carbon steel, stainless steel, copper, and PVC, ensuring seamless integration into virtually any existing piping network.

Key Features

Advanced LoRaWAN wireless communication protocol for ultra-long-distance, low-power telemetry and cloud data integration.
Non-invasive, clip-on transit-time ultrasonic transducers eliminating the need for pipe cutting, line breaking, or process shutdown.
Integrated dual PT1000 clamp-on temperature sensors for highly accurate thermal energy (BTU) and temperature difference calculations.
Exceptional flow measurement accuracy of ±2.0% for fluid velocities greater than 0.3 m/s.
Broad compatibility with common pipe sizes from DN20 to DN80 across carbon steel, stainless steel, copper, and PVC materials.
User-friendly interface featuring a 1.44-inch colorful LCD screen with a 360-degree adjustable rotation for optimal viewing angles.
Native support for wired RS485 communication utilizing standard FUJI or MODBUS RTU protocols for direct SCADA/BMS integration.
Configurable LoRa frequency bands supporting global standards including EU868, US915, AU915, AS923, and CN470.

Industrial Applications

The wireless capabilities and non-intrusive design of this thermal energy meter make it an indispensable asset across continuous-process industries and commercial infrastructure. In the large-scale district cooling plants and commercial HVAC networks of Oman, these meters provide building engineers with the precise thermal data required to balance chilled water loops and accurately bill individual tenants for their actual energy usage without disrupting existing plumbing.

Pharmaceutical manufacturers and food-and-beverage processing facilities across the GCC rely heavily on this technology for life-science grade liquid measurement. Because the sensors never touch the internal water, strict sanitary conditions are effortlessly maintained. As the officially authorized partner for pFlow Gentos, Seven Star LLC distributes these meters to major hospitality chains, hospital complexes, and industrial water treatment plants within the Sohar and Salalah economic zones. The seamless cloud integration empowers these organizations to conduct accurate carbon audits, identify hidden pipeline leaks, and enforce strict, data-driven water stewardship policies.

Technical Specifications

Parameter	Specification
Model	pFlow E3R
Measurement Principle	Ultrasonic Transit-Time / Differential Temperature
Flow Velocity Range	0.03 m/s to 5.0 m/s (0.1 ~ 16 ft/s)
Flow Accuracy	±2.0% of measured value (for velocity > 0.3 m/s)
Compatible Pipe Sizes	DN20 ~ DN80 (21mm ~ 80mm)
Compatible Pipe Materials	Carbon Steel, Stainless Steel, Copper, PVC
Temperature Sensors	2 x PT1000 Clamp-on
Transducer Temperature Range	0°C to +60°C
Temperature Difference Range	2 K to 50 K
Wireless Communication	LoRaWAN (Max Transmit Power: 22dBm)
Wired Communication	RS485 (MODBUS RTU / FUJI Protocol)
Supported LoRa Frequencies	EU868, US915, CN779, EU433, AU915, CN470, AS923
Display	1.44″ Colorful LCD (128×128 resolution)
Power Supply	10 ~ 36 VDC / 500mA
Ingress Protection Rating	IP54

Request a Quote for pFlow E3R LoRaWAN Heat Meter

To submit a formal Request for Quote (RFQ), check current availability and lead time, or request complete technical datasheets for the pFlow E3R LoRaWAN Heat Meter, please contact the official instrumentation division at Seven Star LLC today. As the authorized partner for pFlow Gentos in Oman and the GCC, our engineers are ready to assist with commercial sourcing and advanced wireless metering integration.

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	Flowmeters	View details
pFlow E3R LoRaWAN Heat Meter	Flowmeters	You are viewing this model
pFlow E3CL Clamp-On Thermal Energy Flow Meter	Flowmeters	View details
pFlow E3E Ultrasonic BTU Meter	Flowmeters	View details
pFlow E3RO Ultrasonic Thermal Energy Meter	Flowmeters	View details
pFlow E3W BTU Meter for Temperature Control	Flowmeters	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.

Frequently Asked Questions

What makes the pFlow E3R LoRaWAN Heat Meter ideal for existing HVAC and cooling networks?

The primary advantage is its completely non-invasive, clamp-on design. Facility managers can install the ultrasonic transducers and the PT1000 temperature sensors directly onto the outside of existing pipes. This eliminates the need to drain the system, cut pipes, or halt operations, saving immense amounts of time and installation costs.

How does the LoRaWAN communication technology benefit large-scale industrial facilities?

LoRaWAN (Long Range Wide Area Network) allows the meter to transmit encrypted flow and energy data over extremely long distances using very little power. This is highly beneficial for sprawling industrial plants or large hospital complexes in Oman, as it eliminates the need to run expensive RS485 communication cables from the basement plant room to the central control server.

What pipe sizes and materials are compatible with this ultrasonic energy meter?

The unit is engineered to accommodate pipe diameters ranging from DN20 to DN80 (21mm to 80mm). The internal acoustic algorithms are optimized to work flawlessly through carbon steel, stainless steel, copper, and PVC piping, making it highly versatile for various plumbing architectures.

Can the meter integrate with traditional wired Building Management Systems (BMS)?

Yes, in addition to its wireless LoRaWAN capabilities, the device features a hardwired RS485 communication interface. It natively supports standard MODBUS RTU and FUJI protocols, allowing for seamless integration into legacy PLCs, SCADA networks, and local building management systems.

How does the unit calculate the actual thermal energy or BTU consumption?

The system uses a pair of external PT1000 temperature sensors to measure the exact temperature of the fluid entering the supply line and exiting the return line. The internal processor combines this temperature differential (ΔT) with the highly accurate volumetric flow rate measured by the ultrasonic sensors to calculate real-time thermal energy exchange.

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