Brand: pFlow

pFlow E3RO Ultrasonic Thermal Energy Meter

Name: pFlow E3RO Ultrasonic Thermal Energy Meter – Datasheet
Brand: pFlow

Description

Overview

The pFlow E3RO Ultrasonic Thermal Energy Meter is a non-intrusive, clamp-on BTU measurement instrument engineered for agricultural irrigation systems, animal husbandry climate control, and rural thermal energy management applications. Built by pFlow Gentos with RS485 Modbus communication and robust IP54-rated construction, the pFlow E3RO delivers precise thermal energy measurement using ultrasonic transit-time technology combined with dual PT1000 clamp-on temperature sensors. This rugged energy meter is purpose-designed for environments where traditional inline meters are impractical due to harsh operating conditions, remote locations, or the need to maintain uninterrupted system operation.

As the official authorized partner and exclusive regional representative for pFlow Gentos, Seven Star LLC proudly supplies the pFlow E3RO across Oman and the GCC. Every unit is sourced directly from the manufacturer with dedicated local technical support through our Muscat-based instrumentation division. Agricultural operations, livestock facilities, and greenhouse complexes across the Sultanate of Oman rely on Seven Star LLC for rapid availability, commissioning guidance, and lifecycle support for the complete pFlow thermal energy metering portfolio.

Measurement Principle

The pFlow E3RO operates on the ultrasonic transit-time difference principle. Two clamp-on transducers mounted on the exterior surface of the pipe alternately transmit and receive ultrasonic pulses along and against the direction of fluid flow. When liquid moves through the pipe, the downstream pulse arrives faster than the upstream pulse, and this precise time difference is directly proportional to the volumetric flow rate. The pFlow E3RO simultaneously captures supply and return temperature data from two external PT1000 clamp-on sensors, computing the thermal energy transfer in real time based on the measured flow rate and temperature differential.

Because the transducers mount externally on the pipe surface, the pFlow E3RO introduces no moving parts, creates no pressure drop, and poses zero contamination risk to the process fluid. This non-invasive architecture is critically important in agricultural and animal husbandry applications, where system downtime for meter installation can disrupt climate control, irrigation schedules, or livestock welfare. The absence of wetted components eliminates leak risk, reduces maintenance to near zero, and allows the meter to be installed or relocated on live systems without shutting down operations.

Engineering Design of the pFlow E3RO

The pFlow E3RO features a compact, integrated form factor with a 1.44-inch color LCD display (128×128 resolution) and four touch-key controls, all housed within an IP54-rated enclosure that withstands dust ingress and water splashing typical of agricultural and outdoor environments. The display rotates 360° to accommodate any mounting orientation, ensuring clear readability whether the unit is installed vertically on a riser or horizontally on a distribution header. The meter supports pipe diameters from DN20 to DN80 and is compatible with carbon steel, stainless steel, copper, and PVC piping commonly found in agricultural water systems.

Connectivity on the pFlow E3RO centers on RS485 serial communication supporting both Modbus and FUJI protocols, enabling straightforward integration with SCADA systems, PLCs, and agricultural automation controllers. The unit operates on a wide 10–36 VDC power supply range, accommodating solar-powered installations and battery-backed systems commonly deployed in remote agricultural sites. Additional OCT pulse and relay outputs provide direct interface capability with totalizer counters, alarm systems, and irrigation control valves, making the pFlow E3RO a versatile field instrument for distributed thermal energy monitoring across large agricultural estates.

Key Features of the pFlow E3RO

The pFlow E3RO Ultrasonic Thermal Energy Meter delivers a comprehensive set of capabilities designed for agricultural and rural energy management professionals:

Non-intrusive clamp-on installation requires zero pipe modification, enabling rapid deployment on live irrigation and climate control systems without process interruption or system drainage.
IP54-rated enclosure provides reliable protection against dust and water splashing, ensuring dependable operation in outdoor agricultural environments, greenhouses, and livestock facilities.
RS485 communication with Modbus and FUJI protocol support enables seamless integration with SCADA systems, PLCs, and farm automation controllers for centralized monitoring.
Wide 10–36 VDC power supply range accommodates solar panels, battery-backed systems, and standard industrial power sources commonly found in remote agricultural installations.
Dual PT1000 clamp-on temperature sensors deliver precise supply-and-return temperature differential measurement across a 3–75K range for accurate thermal energy calculation.
360-degree rotatable 1.44-inch color LCD display with four touch keys provides clear on-site visualization of flow rate, temperatures, and cumulative thermal energy in any mounting orientation.
Flow velocity measurement range of 0.03 to 5.0 m/s with ±2.0% accuracy and 0.20% repeatability ensures reliable readings across varying seasonal load conditions.
Compatible with DN20–DN80 pipes in carbon steel, stainless steel, copper, and PVC, covering the full range of piping materials used in agricultural water distribution networks.

Industrial Applications

The pFlow E3RO is engineered for deployment across a broad spectrum of thermal energy measurement scenarios in agricultural, horticultural, and animal husbandry operations. In greenhouse climate control systems, the meter monitors heating and cooling energy delivered through hydronic loops, enabling precise energy accounting and optimization of fuel or electricity consumption. For animal husbandry facilities, the pFlow E3RO tracks thermal energy in livestock building ventilation heating circuits, poultry house radiant heating systems, and dairy barn temperature regulation networks. In agricultural irrigation infrastructure, the meter measures thermal energy exchange in geothermal heating loops, solar thermal collector circuits, and frost protection systems deployed across open-field and protected cultivation zones.

As the officially authorized partner for pFlow Gentos, Seven Star LLC distributes the pFlow E3RO 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 greenhouse complex in the Batinah coast, a livestock operation in the Al Dakhiliyah region, or an agricultural development in the Sohar and Salalah economic zones, Seven Star LLC delivers the pFlow E3RO with full manufacturer backing and dedicated regional after-sales service.

Technical Specifications

The following table summarizes the key technical parameters of the pFlow E3RO Ultrasonic Thermal Energy Meter:

Parameter	Specification
Model	pFlow E3RO
Measurement Principle	Ultrasonic Transit-Time Difference
Pipe Size Range	DN20–DN80
Pipe Materials	Carbon Steel, Stainless Steel, Copper, PVC
Flow Velocity Range	0.03–5.0 m/s
Accuracy	±2.0% of measured value
Repeatability	0.20%
Temperature Sensors	2× PT1000 Clamp-On
Fluid Temperature Range	4–95 °C
Temperature Diff. Range	3–75K
Display	1.44″ Color LCD, 128×128, 360° Rotatable
Power Supply	10–36 VDC / 500 mA
Communication	RS485 (Modbus / FUJI)
Outputs	OCT Pulse, Relay
Protection Rating	IP54
Installation Type	Non-Intrusive Clamp-On

Request a Quote for pFlow E3RO Ultrasonic Thermal Energy Meter

As the authorized partner for pFlow Gentos in Oman and the GCC, Seven Star LLC invites agricultural engineers, farm facility managers, and procurement teams to request a formal quotation for the pFlow E3RO Ultrasonic Thermal Energy 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 agricultural 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	View details
pFlow E3RO Ultrasonic Thermal Energy Meter	Heat & BTU Energy Meters	You are viewing this model
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 E3RO Ultrasonic Thermal Energy Meter

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

01What makes the pFlow E3RO suitable for agricultural and animal husbandry applications?

The pFlow E3RO is specifically designed for harsh agricultural environments with its IP54-rated enclosure, wide 10 to 36 VDC power supply range compatible with solar and battery systems, and RS485 Modbus communication for integration with farm automation controllers. Its non-intrusive clamp-on installation means it can be deployed on live irrigation or climate control systems without any downtime.

02How does the pFlow E3RO reduce installation costs compared to inline thermal meters?

As a clamp-on ultrasonic meter, the pFlow E3RO mounts externally on the pipe surface without any cutting, welding, or system drainage. This eliminates the need for bypass piping, flanged connections, and extended system shutdowns. Installation can be completed in under an hour on a live system, significantly reducing labor costs and avoiding crop or livestock welfare disruptions.

03What pipe sizes and materials are compatible with the pFlow E3RO?

The pFlow E3RO supports pipe diameters from DN20 to DN80 and is compatible with carbon steel, stainless steel, copper, and PVC piping. This covers the full range of pipe materials commonly used in agricultural water distribution, greenhouse heating loops, and animal husbandry climate control circuits.

04Can the pFlow E3RO integrate with existing SCADA or farm automation systems?

Yes, the pFlow E3RO features RS485 serial communication supporting both Modbus and FUJI protocols, enabling direct integration with SCADA systems, PLCs, and agricultural automation controllers. Additional OCT pulse and relay outputs provide interface capability with totalizer counters, alarm systems, and irrigation control valves for comprehensive farm energy management.

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.