Ultra Low Flow Sensor – FLS ULF
The FLS ULF compact ultra low flow sensors are designed for use with all types of aggressive, solid-free liquids. They can be mounted on flexible or rigid pipes using ¼” GAS threaded process connections. The paddlewheel sensor generates a frequency output proportional to flow velocity, enabling easy transmission and processing.
Two flow range options are available, starting from 1.5 l/h (0.0066 gpm) or 6 l/h (0.0264 gpm). Constructed from POM or ECTFE (Halar®), the ULF delivers high strength, durability, and excellent chemical resistance.
Ultra Low Flow Sensor – FLS ULF
- POM or ECTFE (Halar®) wetted parts
- Two flow ranges available:
- 1.5 – 100 l/h (0.0066 – 0.44 gpm)
- 6 – 250 l/h (0.0264 – 1.1 gpm)
- High chemical resistance
- Easy mounting
Technical Details of Ultra Low Flow Sensor – FLS ULF
| Specification | Details |
|---|---|
| Flow Rate Range | – ULF01 version: 1.5 to 100 l/h (0.0066 to 0.44 gpm) – ULF03 version: 6 to 250 l/h (0.0264 to 1.1 gpm) |
| Linearity | ± 1 % of full scale |
| Repeatability | ± 0.5 % of full scale |
| Working Temperature | -10°C to 80°C (14°F to 176°F) |
| Working Pressure | 5 bar (70 psi) max @ 22°C (72°F) |
| Viscosity of fluid | 1 to 10 cST |
| Enclosure | IP65 front |
| Wetted materials (POM version) | Sensor body: POM O-ring: FPM Rotor: POM Shaft: Corepoint magnets SmCo₅ |
| Wetted materials (ECTFE version) | Sensor body: ECTFE (Halar®) O-ring: FPM or KALREZ Rotor: ECTFE (Halar®) Shaft: Sapphire Bearings: Sapphire |
| Connections | 1/4” GAS male threaded |
| Cable length | 2 m (6.5 ft) standard |
| Specific for ULF01.H I and ULF03.H | |
| Supply Voltage | 5 to 24 VDC ±10%, regulated |
| Supply current | < 15 mA @ 24 VDC |
| Output signal | Square wave |
| Signal type | Push-Pull (for connection to NPN and PNP inputs) |
| K-factor | – ULF01 version: 8431 Pulses/Liter (31569 Pulses/U.S. Gallon) in linear range from 8 to 100 l/h – ULF03 version: 3394 Pulses/Liter (12846 Pulses/U.S. Gallon) in linear range from 15 to 250 l/h |
| 2* Current output | 4-20 mA, isolated, fully adjustable and reversible |
| Max loop impedance | 800 Ω @ 24 VDC – 250 Ω @ 12 VDC |
| Specific for ULF01.R I and ULF03.R | |
| Supply voltage | None |
| Output signal | Square wave |
| Output type | Reed Contact |
| K-factor | – ULF01 version: 2108 Pulses/Liter (7978 Pulses/U.S. Gallon) in linear range from 8 to 100 l/h – ULF03 version: 848 Pulses/Liter (3210 Pulses/U.S. Gallon) in linear range from 15 to 250 l/h |
| Manufactured under | ISO 9001, ISO 14001 |
| Certifications | CE, RoHS Compliant |
| Part No. | Version | Power supply | Length | Main wetted materials | Enclosure Flow | Rate Range | Weight (gr.) |
|---|---|---|---|---|---|---|---|
| ULF01.H.0 | Hall | 5 - 24 VDC | 77mm | POM / FPM | IP65 | 1.5 to 100 l/h (0.0066 to 0.44 gpm) | 170 |
| ULF01.H.2 | Hall | 5 - 24 VDC | 77mm | ECTFE / FPM | IP65 | 1.5 to 100 l/h (0.0066 to 0.44 gpm) | 200 |
| ULF01.H.3 | Hall | 5 - 24 VDC | 77mm | ECTFE / KALREZ | IP65 | 1.5 to 100 l/h (0.0066 to 0.44 gpm) | 200 |
| ULF01.R.0 | Reed | None | 77mm | POM / FPM | IP65 | 1.5 to 100 l/h (0.0066 to 0.44 gpm) | 170 |
| ULF01.R.2 | Reed | None | 77mm | ECTFE / FPM | IP65 | 1.5 to 100 l/h (0.0066 to 0.44 gpm) | 200 |
| ULF01.R.3 | Reed | None | 77mm | ECTFE / KALREZ | IP65 | 1.5 to 100 l/h (0.0066 to 0.44 gpm) | 200 |
| ULF03.H.0 | Hall | 5 - 24 VDC | 77mm | POM / FPM | IP65 | 6 to 250 l/h (0.0264 to 1.1 gpm) | 170 |
| ULF03.H.2 | Hall | 5 - 24 VDC | 77mm | ECTFE / FPM | IP65 | 6 to 250 l/h (0.0264 to 1.1 gpm) | 200 |
| ULF03.H.3 | Hall | 5 - 24 VDC | 77mm | ECTFE / KALREZ | IP65 | 6 to 250 l/h (0.0264 to 1.1 gpm) | 200 |
| ULF03.R.0 | Reed | None | 77mm | POM / FPM | IP65 | 6 to 250 l/h (0.0264 to 1.1 gpm) | 170 |
| ULF03.R.2 | Reed | None | 77mm | ECTFE / FPM | IP65 | 6 to 250 l/h (0.0264 to 1.1 gpm) | 200 |
| ULF03.R.3 | Reed | None | 77mm | ECTFE / KALREZ | IP65 | 6 to 250 l/h (0.0264 to 1.1 gpm) | 200 |
1- Electrical cable: 2 m. (6.5 ft) standard
2- Completely encapsulated electronics
3- Connection (other versions available on request according to body material)
4- POM or ECTFE Halar® (registered trademark of Ausimont-Solvay) sensor body
5- PP fixing plate
Customization & Processing Options
Customizations Option Available for Ultra Low Flow Sensor – FLS ULF
At Petron Thermoplast, we offer customized PVDF fittings to meet your specific system requirements.
Customization options include:
- Tailor-made dimensions and wall thicknesses
- Custom-molded and machined PVDF fittings
- Pre-fabricated manifolds and assemblies
- Choice of connection type (butt fusion, socket fusion, or flanged)
- OEM branding or marking options
