Brand: pFlow

pFlow GF-GH-CL Ultrasonic Flowmeter for Immersion Cooling Systems

Name: pFlow GF-GH-CL Ultrasonic Flowmeter for Immersion Cooling
Brand: pFlow

Description

Overview

The pFlow GF-GH-CL Ultrasonic Flowmeter is engineered for precise flow measurement in small-diameter pipes ranging from DN15 to DN50, purpose-built to serve the growing demand for accurate coolant flow monitoring in immersion cooling systems. As computing power and chip heat generation continue to rise across cloud computing, AI, and data center infrastructure, the GF-GH-CL provides the real-time flow data needed to ensure efficient circulation and maintain optimal cooling performance in these demanding thermal management environments.

As the official authorized partner and exclusive regional representative for pFlow Gentos, Seven Star LLC proudly supplies the GF-GH-CL to data center operators, industrial cooling system integrators, and process facilities across the Sultanate of Oman, Muscat, and the wider GCC. Its non-contact clamp-on design and compact footprint make it a practical solution wherever small-diameter coolant lines require dependable, leak-free flow monitoring.

Measurement Principle

The pFlow GF-GH-CL uses the ultrasonic transit-time method combined with high-reliability signal processing circuits to measure flow rates accurately in small-diameter pipes. The instrument achieves ±2% accuracy across a flow velocity range of 0.03m/s to 5.0m/s, with repeatability of 0.4%, giving immersion cooling system operators confidence in the coolant flow data driving their thermal management decisions.

Because the flowmeter’s clamp-on design allows installation without breaking into pipes, it preserves the integrity of the coolant loop in immersion cooling systems, preventing potential leaks and disruptions that could compromise sensitive IT equipment. This non-contact measurement approach is particularly valuable in liquid cooling applications where any breach of the coolant circuit carries significant risk to connected electronics.

Engineering Design of the pFlow GF-GH-CL

The pFlow GF-GH-CL features an integrated external clamping structure for quick and easy installation, with a 1.54-inch LCD color screen (240×240 resolution) that rotates 360° for clear readings from any mounting angle. Three touch keys provide straightforward on-site configuration, while the transmitter and transducer housing use durable PC (polycarbonate) engineering plastic, with the clamp available in either aluminum alloy or polycarbonate material.

The all-in-one transmitter pairs with a clamp-on transducer connected via a 5mm black six-core shielded cable with self-locking connectors at a standard 4-meter length, simplifying cable management in tight data center and equipment cabinet installations. The unit operates on a 10-36VDC power supply and carries an IP54 enclosure rating, with the transmitter rated for -10°C to 50°C and the transducer for 0°C to 85°C, covering the operating range typical of immersion cooling environments.

Key Features

The pFlow GF-GH-CL combines small-pipe precision with robust connectivity for immersion cooling applications. Core capabilities include:

Small-diameter pipe compatibility from DN15 to DN50 with ±2% measurement accuracy.
Non-contact clamp-on installation preserving coolant loop integrity and preventing leaks.
1.54-inch, 240×240 resolution LCD color screen with 360° rotation for flexible reading angles.
RS485 communication with MODBUS protocol support alongside 4–20mA analog output.
Cumulative flow tracking to help identify leaks or inefficiencies in the cooling system.
Wide temperature and humidity tolerance suited to varying immersion cooling conditions.
IP54-rated PC engineering plastic enclosure for durability in equipment room environments.
Compatible with water-based coolants commonly used in immersion cooling systems.

Industrial Applications

The pFlow GF-GH-CL is purpose-built for immersion cooling systems in data centers and high-performance computing facilities across Oman, where precise coolant flow monitoring directly supports IT equipment reliability and thermal management efficiency. Its small pipe-size compatibility also extends its usefulness to agriculture and irrigation systems, water and wastewater management, and HVAC applications requiring compact, accurate flow sensing.

As the officially authorized partner for pFlow Gentos, Seven Star LLC distributes the GF-GH-CL to data center operators, process industries including chemical, pharmaceutical, and food and beverage facilities, and energy management programs throughout the Sohar and Salalah economic zones and the broader GCC region.

Technical Specifications

Full technical parameters for the pFlow GF-GH-CL ultrasonic flowmeter:

Parameter	Specification
Model	pFlow GF-GH-CL
Measurement Principle	Ultrasonic Transit-Time, Clamp-on
Flow Velocity Range	0.03m/s to 5.0m/s
Accuracy	±2% (0.3m/s ~ 5m/s)
Repeatability	0.4%
Pipe Size	DN15, DN20, DN25, DN32, DN40, DN50
Pipe Material	Stainless Steel
Medium	Water-Based Coolants
Display	1.54-inch LCD Color Screen, 240×240, 360° Rotation
Communication	RS485 (MODBUS Protocol), 4–20mA
Power Supply	10–36VDC, 500mA
Enclosure Rating	IP54, PC Engineering Plastic

Why Choose Seven Star LLC for Immersion Cooling Projects

Immersion cooling deployments in Omani data centers are frequently retrofit into existing equipment rooms where pipe runs are compact and access is limited, making correct small-diameter transducer sizing essential before the GF-GH-CL ships. Seven Star LLC’s engineers confirm DN15–DN50 pipe compatibility and coolant type against the customer’s actual loop design, and advise on cable routing within tight cabinet spaces to avoid rework after installation.

As the officially authorized partner for pFlow Gentos, we also support data center operators integrating the GF-GH-CL’s RS485 MODBUS output into existing cooling-plant monitoring dashboards, and can coordinate multi-unit orders for facilities standardizing coolant flow monitoring across several immersion tanks in Muscat and the wider GCC, including guidance on spare transducer stocking for sites running continuous, unattended cooling operations.

Request a Quote for pFlow GF-GH-CL Ultrasonic Flowmeter for Immersion Cooling Systems

To submit a formal Request for Quote (RFQ), check current availability and lead time, or request complete technical datasheets for the pFlow GF-GH-CL Ultrasonic Flowmeter for Immersion Cooling Systems, 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 precision coolant flow metering integration.

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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 GF-GH-CL Ultrasonic Flowmeter for Immersion

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

01What pipe sizes does the pFlow GF-GH-CL support?

The GF-GH-CL is designed for small-diameter pipes from DN15 to DN50, making it suitable for compact coolant lines in immersion cooling systems.

02Does the GF-GH-CL risk leaks in a sealed immersion cooling loop?

No. The GF-GH-CL uses a non-contact clamp-on design that installs without breaking into pipes, preserving the integrity of the coolant loop and preventing leaks.

03What accuracy does the GF-GH-CL provide?

The GF-GH-CL delivers u00b12% accuracy across a flow velocity range of 0.03m/s to 5.0m/s, with 0.4% repeatability.

04How does the GF-GH-CL integrate with cooling system control platforms?

The GF-GH-CL supports RS485 communication with MODBUS protocol as well as 4-20mA output, allowing real-time integration with immersion cooling system control platforms.

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

Yes. Seven Star LLC is the officially authorized partner and exclusive regional representative for pFlow Gentos in Oman and the GCC, supplying genuine products with local technical support.