pFlow GFR Agricultural LoRaWAN Ultrasonic Flow Meter

Overview

The pFlow GFR Agricultural Flow Meter is a clip-on ultrasonic instrument purpose-built for agriculture and irrigation applications, using LoRa communication and the optional LoRaWAN protocol to deliver ultra-remote, low-power, high-availability wireless data transmission. This communication technology transmits information at very low frequencies with low complexity and cost, making the GFR an ideal solution for field installations where running wired communication infrastructure is impractical.

As the official authorized partner and exclusive regional representative for pFlow Gentos, Seven Star LLC proudly supplies the GFR to agricultural cooperatives, irrigation contractors, and farm management operators across the Sultanate of Oman, Muscat, and the wider GCC. Its long transmission distance and no-wiring installation make it especially well suited to the dispersed field layouts typical of large-scale agricultural irrigation networks.

Measurement Principle

The pFlow GFR adopts the ultrasonic transit-time measurement principle, combined with patented flow algorithm technology to achieve accurate measurement of fluid flow in the pipe. The instrument delivers ±2% accuracy (0.3m/s to 5m/s) with 0.4% repeatability across a flow velocity range of 0.03m/s to 5.0m/s, giving irrigation managers dependable data for water allocation decisions.

The product features an all-in-one, clip-on structure design that is simple and convenient to install, requiring only four steps from start to finish. The installation process requires no contact with fluid media and no need to shut down the flow, allowing irrigation systems to remain operational throughout commissioning—a significant advantage during critical growing seasons.

Engineering Design of the pFlow GFR

The pFlow GFR supports LoRa communication with a maximum transmit power of 22dBm, operating reliably across a wide temperature range of -40°C to 85°C to withstand harsh outdoor field conditions. The device offers selectable LoRa frequency bands to match regional requirements, including EU868, US915, CN779, EU433, AU915, CN470, and AS923(HK), ensuring compatibility with LoRaWAN networks deployed across different countries and regions.

A 1.54-inch LCD color screen with 240×240 resolution rotates 360° for clear readings from any mounting angle, paired with three touch keys for straightforward field configuration. Beyond its wireless LoRa capability, the GFR also provides a standard RS485 interface with FUJI or MODBUS protocol support, giving installers flexibility to integrate via either wireless or wired communication depending on site infrastructure.

Key Features

The pFlow GFR combines long-range wireless connectivity with rugged clamp-on sensing for agricultural applications. Core capabilities include:

• LoRa and optional LoRaWAN communication for ultra-remote, low-power, low-cost data transmission.
• Selectable frequency bands (EU868, US915, CN779, EU433, AU915, CN470, AS923) for regional compatibility.
• Easy installation with no pipe damage, no adjustment, and simple clip-on measurement.
• 360° rotation adjustable LCD color display screen for flexible field-reading angles.
• No wiring required for wireless installations, with long transmission distance.
• ±2% accuracy across a flow velocity range of 0.03m/s to 5.0m/s.
• Wide operating temperature range from -40°C to 85°C for demanding outdoor conditions.
• Standard RS485 with FUJI or MODBUS protocol as a wired communication alternative.

Industrial Applications

The pFlow GFR is engineered specifically for agriculture and irrigation systems across Oman, where its LoRaWAN wireless capability enables monitoring of dispersed field flow points without running cable infrastructure across large farm areas. Beyond agriculture, the GFR’s long-range wireless design also serves water and wastewater management, HVAC systems, and environmental and carbon footprint monitoring programs.

As the officially authorized partner for pFlow Gentos, Seven Star LLC distributes the GFR to agricultural cooperatives, farm management companies, and rural water authorities throughout the Sohar and Salalah economic zones and the broader GCC region, supporting efficient, connected irrigation water management.

Technical Specifications

Full technical parameters for the pFlow GFR agricultural LoRaWAN ultrasonic flow meter:

Call To Action

To submit a formal Request for Quote (RFQ), check regional warehouse stock availability, or download complete technical datasheets for the pFlow GFR Agricultural LoRaWAN Ultrasonic Flow 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 rapid commercial sourcing and long-range wireless irrigation flow metering integration.