Brand: pFlow

pFlow GF-S-CL Ultrasonic Flow Sensor for Liquid Cooling Systems

Name: pFlow GF-S-CL Flow Sensor for Liquid Cooling Systems
Brand: pFlow

Description

Overview

The pFlow GF-S-CL Ultrasonic Flow Sensor is an instrument designed for measuring flow velocity using the ultrasonic transit-time method, purpose-built for liquid cooling system applications where efficient thermal management and consistent operating conditions are critical. Its integrated clamp-on structure allows for quick and easy installation without the need for direct contact with the fluid medium, avoiding interference with existing production processes while ensuring accurate measurements.

As the official authorized partner and exclusive regional representative for pFlow Gentos, Seven Star LLC proudly supplies the GF-S-CL to data center operators, industrial cooling system integrators, and laboratory facilities across the Sultanate of Oman, Muscat, and the wider GCC. Its versatility, ease of installation, and reliability make it an ideal choice for monitoring flow rates across a wide range of industrial and laboratory liquid cooling setups.

Measurement Principle

The pFlow GF-S-CL measures flow using the ultrasonic transit-time method, achieving ±3% of full-scale accuracy across a flow velocity range of 0.03m/s to 5.0m/s. By collecting flow data and combining it with temperature data from other sensors, the GF-S-CL helps establish a precise thermal management model, ensuring stable operating conditions for heat-generating equipment.

Because the sensor’s clamp-on design allows for easy installation without breaking the pipeline, it minimizes disruption to existing liquid cooling systems during commissioning and ongoing maintenance. This non-intrusive approach provides real-time flow data, enabling precise control of cooling liquid flow to maintain consistent temperatures across connected equipment.

Engineering Design of the pFlow GF-S-CL

The pFlow GF-S-CL is constructed with PC (polycarbonate) engineering plastic for both the casing and clamp material, providing durability suited to the harsh conditions often found in industrial cooling applications. Its all-in-one transmitter pairs with a clamp-on transducer via a 5mm black six-core shielded cable with self-locking connectors at a standard 4-meter length, and the integrated design with reusable coupling pads reduces maintenance costs and downtime.

A 1.54-inch LCD color screen with 240×240 resolution and three touch keys provide clear, straightforward on-site configuration and readings. The sensor operates on a 10-36VDC power supply and communicates via RS485 with MODBUS protocol support, enabling easy integration with control systems for centralized monitoring and management of cooling processes across facilities.

Key Features

The pFlow GF-S-CL combines wide pipe compatibility with robust thermal monitoring capability. Core capabilities include:

Non-intrusive clamp-on installation, avoiding pipeline breaks and minimizing system disruption.
Wide pipe compatibility across DN15 to DN50 in stainless steel, PVC, copper, and PPR materials.
Real-time flow data enabling precise control of cooling liquid flow and temperature consistency.
RS485 communication with MODBUS protocol for centralized control system integration.
Durable PC engineering plastic construction suited to demanding industrial cooling environments.
Reusable coupling pads that reduce maintenance costs and system downtime.
Energy efficiency support through optimized cooling liquid flow management.
1.54-inch color LCD display with 3 touch keys for straightforward field configuration.

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Standard 4-meter transducer cable length simplifies routing in compact equipment rooms.

Industrial Applications

The pFlow GF-S-CL is well suited to liquid cooling systems across data centers, industrial process facilities, and research laboratories throughout Oman, where consistent thermal management directly affects equipment reliability. Its wide pipe material and size compatibility also extend its usefulness to agricultural irrigation, water and wastewater management, and HVAC applications.

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

Technical Specifications

Full technical parameters for the pFlow GF-S-CL ultrasonic flow sensor:

Parameter	Specification
Model	pFlow GF-S-CL
Measurement Principle	Ultrasonic Transit-Time, Clamp-on
Flow Velocity Range	0.03m/s to 5.0m/s
Accuracy	±3% of Full Scale
Pipe Size	DN15, DN20, DN25, DN32, DN40, DN50
Pipe Material	Stainless Steel, PVC, Copper, PPR
Medium	Water
Display	1.54-inch LCD Color Screen, 240×240 Resolution
Communication	RS485 (MODBUS Protocol), 4–20mA
Power Supply	10–36VDC, 500mA
Enclosure Rating	IP54, PC Engineering Plastic

Why Choose Seven Star LLC for Liquid Cooling Monitoring

Liquid cooling retrofits in Omani industrial and laboratory facilities often need to be completed without shutting down the equipment being cooled, which makes the GF-S-CL’s non-intrusive clamp-on installation particularly valuable — but only if the pipe material and size are confirmed correctly beforehand. Seven Star LLC’s engineers verify stainless steel, PVC, copper, or PPR compatibility against the customer’s actual cooling loop before the order ships, avoiding a mismatched sensor arriving on a live production site.

As the authorized regional partner for pFlow Gentos, we also help facilities managers plan RS485 MODBUS integration into existing thermal management or building automation platforms, and can advise on reusable coupling pad maintenance schedules to keep long-term measurement drift to a minimum across sites in Oman and the wider GCC, and can advise on spare transducer stocking for laboratories running continuous, unattended cooling trials.

Request a Quote for pFlow GF-S-CL Ultrasonic Flow Sensor for Liquid 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-S-CL Ultrasonic Flow Sensor for Liquid 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 liquid cooling 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-S-CL Ultrasonic Flow Sensor for Liquid

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

01What pipe materials is the pFlow GF-S-CL compatible with?

The GF-S-CL supports stainless steel, PVC, copper, and PPR pipe materials across sizes from DN15 to DN50.

02Does installing the GF-S-CL require breaking into the pipeline?

No. The GF-S-CL uses a non-intrusive clamp-on design that installs without breaking the pipeline, minimizing disruption to existing liquid cooling systems.

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

The GF-S-CL delivers u00b13% of full-scale accuracy across a flow velocity range of 0.03m/s to 5.0m/s.

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

The GF-S-CL supports RS485 communication with MODBUS protocol, enabling centralized monitoring and management of cooling processes across facilities.

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.