TVF Series

Turbine Flow Meter

Name: Turbine Flow Meter
Brand: Veksler Instruments

A precision rotor turns with the flow and a magnetic pickup converts that rotation into a signal. A good choice when the liquid is clean and repeatable measurement matters.

Request a quote

Request datasheet

Line sizes: 15 NB – 250 NB
Accuracy: ± 0.5% of reading
Repeatability: ± 0.1% of reading
Pressure rating: up to 40 bar

Overview

For clean liquids and repeatable measurement

A precision rotor turns with the flow and a magnetic pickup converts that rotation into a signal. A good choice when the liquid is clean and repeatable measurement matters.

Construction options cover threaded, flanged, sanitary tri-clamp and high pressure bodies, in SS304, SS316 or SS316L, with compact or remote-mounted indicator options.

Best suited for clean liquids with stable viscosity. For viscous or dirty media, consult the factory.

High accuracy and repeatability

±0.5% of reading as standard and ±0.2% optional, with ±0.1% repeatability.

Wide size range

15 NB to 250 NB, up to 10 inch, in threaded, flanged and sanitary constructions.

Output to suit the loop

Pulse, 4-20 mA, RS485 Modbus, with HART optional.

Compact or remote

Local indicator, compact transmitter or remote-mounted electronics.

Technical specifications

Performance and engineering data

Measurement principle	Velocity type turbine flow measurement
Fluid service	Clean, low-viscosity liquids
Accuracy	±0.5% of reading (standard), ±0.2% of reading (optional)
Repeatability	±0.1% of reading
Rangeability	Up to 10:1 standard, higher on request depending on size
Line sizes	15 NB to 250 NB (up to 10 inch)
Medium temperature	−20 °C to +120 °C standard, higher on request
Ambient temperature	−20 °C to +60 °C
Pressure rating	Up to 40 bar standard, higher on request
Wetted materials	SS304, SS316, SS316L
Connections	Threaded, flanged, sanitary tri-clamp
Outputs	Pulse, 4-20 mA, RS485 Modbus, HART optional
Power supply	24 VDC transmitter version / battery local indicator optional
Display	Local rate and total indication
Protection	IP65 / IP67 depending on model

Recommended straight run: 10D upstream, 5D downstream. Calibrated on water at 20 °C unless otherwise specified. Ordering format: TVF - [Size] - [Connection] - [Material] - [Output] - [Display], for example TVF-050-FL-316L-PA-L.

Indicative water calibration ranges at 20 °C

Ranges are indicative and may vary with model and rotor design

Size (NB)	Approx. inch	Typical flow range (m³/h)	Common connections
15	1/2	0.6 to 6	Threaded / Flanged
20	3/4	0.8 to 8	Threaded / Flanged
25	1	1 to 10	Threaded / Flanged
32	1-1/4	1.5 to 15	Threaded / Flanged
40	1-1/2	2 to 20	Threaded / Flanged
50	2	4 to 40	Threaded / Flanged
65	2-1/2	6 to 60	Flanged
80	3	10 to 100	Flanged
100	4	20 to 200	Flanged
125	5	25 to 250	Flanged
150	6	30 to 300	Flanged
200	8	50 to 500	Flanged
250	10	80 to 800	Flanged

Actual turndown depends on viscosity, density and calibration point. Special low-flow or high-range versions can be engineered; contact the factory for application-specific sizing.

Models and variants

Four constructions.

Construction options for varied industrial duties. All share the precision rotor and shaft assembly, low-friction bearings and magnetic or Hall pickup sensor.