Tecfluid Serie 2000 Variable Area Flowmeter
Overview: Compact, Direct-Reading Flow Indication for Control Panels
The Tecfluid Serie 2000 is a variable area flowmeter purpose-built for low flows of liquids and gases, distinguished by its short mounting length and compact size that make it especially suited to installation directly on control panels. Unlike inferential flow measurement technologies that require straight upstream and downstream pipe runs to achieve rated accuracy, the Serie 2000 requires no straight pipe run before or after the flowmeter, simplifying installation in tight panel and skid layouts.
As an authorized supplier of Tecfluid flow instrumentation, Seven Star LLC sources and supplies the Serie 2000 variable area flowmeter to water purification plants, gas burner control systems, and industrial refrigeration facilities across Oman and the wider GCC. Because Serie 2000 models span a range of accuracy classes and connection sizes, Seven Star LLC helps engineering teams select the correct model for their specific flow range and control panel application.
Measurement Principle
The Serie 2000 works according to the variable area principle: a float moves inside a tapered borosilicate glass tube, rising or settling to the vertical position where the fluid’s upward thrust force, the float’s weight, and the free annular passage area between float and tube balance. Because the float’s position along the tapered tube directly corresponds to flow rate, the reading is available as a direct, real-time visual indication against a printed scale calibrated in l/h, l/min, percentage, or other engineering units, requiring no external power or electronics for basic indication.
An integral, accurate needle valve is included as standard for precise flow regulation directly at the point of measurement (models without the regulating valve are also available), allowing an operator to both observe and adjust flow rate from a single compact device. For gas applications experiencing variable inlet or outlet pressure, the companion RCA regulator (constant outlet pressure, variable inlet) or RCD regulator (constant inlet pressure, variable outlet/counter-pressure) can be paired with the Serie 2000 to maintain a constant flow despite pressure fluctuations upstream or downstream.
Engineering Design of the Serie 2000
The Serie 2000 covers measuring ranges from 0.1 to 1,000 l/h for water and 1 Nl/h to 30 Nm3/h for air, with accuracy varying by model: the 2100 model achieves ±3.5% full scale, the 2150 model ±3% full scale, and the 2300/2340 models ±1.6% full scale, giving specifiers a choice between economical indication and tighter measurement accuracy. Connections are 1/4 inch BSP or NPT on the 2100/2150/2300 models, or 1/2 inch or 3/4 inch male BSP/NPT on the larger 2340 model.
Construction uses a borosilicate glass flow tube with wetted parts and float in EN 1.4404 (AISI 316L) stainless steel, with float material alternatives in glass, plastic, or ceramic depending on the process fluid and required chemical compatibility. Options include one or two adjustable switches (optical detector, inductive sensor, or reed switch) for local alarm or interlock signaling, and the unit is available in versions suitable for both safe and hazardous area installations, including ATEX-rated configurations.
Key Features
The Tecfluid Serie 2000 Variable Area Flowmeter delivers direct-reading, compact flow indication and regulation. Key characteristics include:
- Variable area (float-in-tapered-tube) measurement principle requiring no electrical power.
- Measuring range 0.1 to 1,000 l/h (water) or 1 Nl/h to 30 Nm3/h (air).
- No straight pipe run required before or after installation.
- Integral needle regulating valve for precise flow adjustment at the point of measurement.
- Accuracy from ±1.6% to ±3.5% full scale depending on model (2100/2150/2300/2340).
- Borosilicate glass tube with 316L stainless steel wetted parts.
- Optional adjustable switches and ATEX-rated versions for hazardous areas.
Industrial Applications
The Serie 2000 is deployed across control panels, pilot plants, machinery measurement and control points, water purification (osmosis) systems, gas burner control, and industrial and process refrigeration and treatment ovens. Its compact size and lack of straight-run requirement make it a natural fit for OEM equipment builders and control panel integrators who need reliable low-flow indication in constrained mounting space.
Seven Star LLC supports water treatment operators, industrial refrigeration facilities, and OEM panel builders across Oman, Muscat, Sohar, and the broader GCC region with sourcing of Tecfluid Serie 2000 variable area flowmeters, helping projects add compact, reliable low-flow indication to their systems.
Technical Specifications
The table below summarizes the core specifications of the Tecfluid Serie 2000 Variable Area Flowmeter as supplied by Seven Star LLC.
| Parameter | Specification |
|---|---|
| Model | Tecfluid Serie 2000 (2100/2150/2300/2340) |
| Type | Variable area (glass tube) flowmeter |
| Measuring Range | 0.1-1,000 l/h (water); 1 Nl/h-30 Nm3/h (air) |
| Accuracy | ±3.5% (2100), ±3% (2150), ±1.6% (2300/2340) full scale |
| Connections | 1/4 inch BSP/NPT (2100/2150/2300); 1/2 or 3/4 inch (2340) |
| Flow Tube Material | Borosilicate glass |
| Wetted Parts / Float | EN 1.4404 (AISI 316L); float also in glass, plastic, or ceramic |
| Options | Integral needle valve, RCA/RCD regulator, 1-2 adjustable switches, ATEX |
| Max Working Pressure | 15 bar |
| Operating Temperature | -20 °C to +80 °C |
| Scale / Tube Length | 100 mm (2100), 150 mm (2150), 300 mm (2300/2340) |
| Mounting | Vertical, flow upwards |
| Standards | ATEX and Pressure Equipment Directive compliant; manufactured under ISO 9001 |
Operating Limits, Materials and Switch Options
The Tecfluid Serie 2000 is rated for a maximum working pressure of 15 bar and an operating temperature range of -20 °C to +80 °C, which comfortably covers the panel-mounted and skid-mounted duties the instrument is normally specified for, while making clear that it is not a high-pressure or steam-service device. Metering tube length follows the model: 100 mm on the 2100, 150 mm on the 2150, and 300 mm on the 2300 and 2340, and the longer scale is the physical reason the 2300 and 2340 achieve the tighter ±1.6% full-scale accuracy class — a longer float travel resolves the same flow span across more scale divisions. Float material options extend to EN 1.4404 (AISI 316L), aluminium, glass, plastic and ceramic, allowing the float density and chemical compatibility to be matched to the fluid rather than forcing the fluid to suit a single standard float.
Where a limit or alarm contact is required, the optional bi-stable SPST reed switch is rated at a maximum 0.5 A and 250 V with a maximum switched power of 12 VA and a hysteresis of approximately ±5% of the full-scale value, and the switch assembly operates over an ambient range of -25 °C to +80 °C. Optical detectors and inductive sensors are available as alternatives where a solid-state output or a higher switching cycle count is preferred. The instrument is built under an ISO 9001 quality system and is supplied in configurations complying with ATEX and the Pressure Equipment Directive, which is the documentation set most Omani and GCC project specifications will ask for at inspection.
Installation and Maintenance Notes
The Serie 2000 must be installed vertically with the flow passing upwards through the tapered tube, since the measurement depends on gravity acting on the float. No straight pipe run is required upstream or downstream, but the instrument should not be mounted where pipework vibration or pump pulsation will make the float oscillate, and the scale must be read at eye level to avoid parallax error on the printed graduations. Where the process gas or liquid can deposit solids or films, periodic removal and cleaning of the borosilicate tube and float restores the original reading accuracy; there are no electronics to recalibrate and no power supply to maintain. Seven Star LLC supplies the Tecfluid Serie 2000 variable area flowmeter with the correct float, valve and switch configuration confirmed in advance, so that units arriving in Oman and the GCC are ready to mount without field modification.
Request a Quote for Tecfluid Serie 2000 Variable Area Flowmeter
Seven Star LLC supplies the Tecfluid Serie 2000 variable area flowmeter with full manufacturer documentation and regional technical support. Contact our instrumentation division for a formal B2B quotation, to confirm the correct model and accuracy class for your flow range, or to obtain the complete technical datasheet. Seven Star LLC ensures every unit shipped across Oman and the GCC is genuine Tecfluid hardware, correctly specified, and backed by local support.
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Tecfluid S.A. is a Spanish manufacturer of industrial flow and level measurement equipment, offering robust instruments for accurate fluid level and flow detection in demanding process environments. The company’s product range includes magnetic level gauges, bypass level transmitters, flowmeters, variable area and electromagnetic flow devices, as well as accessories and automation interface options. Tecfluid solutions are engineered to withstand high pressure, high temperature and corrosive conditions, serving sectors such as chemical, petrochemical, marine, energy, boiler systems and storage installations where reliable fluid monitoring and control are essential.
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