Bürkert Oval Gear Volume Flow Sensor for Low Volume Flow Rates

This sensor is specially designed for measurement or batch control of highly viscous fluids like glue, honey or oil. It allows an easy connection to transmitters like Type 8025 or Type 8619 for more functionality. The sensor for low volume flow operates according to the oval-gear measuring principle. This well-proven oval gear principle enables reliable and highly accurate measurements with high repeatability over a wide flow and viscosity range. Low pressure loss and high pressure resistance allow the device to be used in a variety of applications, even at low pressure conditions All sensors provide Open Collector NPN frequency output and frequency output on Reed contact via 1-meter 5-wire cable.

Principle

paddle-wheel. Pipe sizes: DN 15 to DN 400 (fitting-dependent). Accuracy: ±2.5 % of full scale. Output: open-collector pulse. Process: through Type S030 fitting. Temperature: 0 to +80 °C. Pressure: up to 10 bar.

Screw

Stainless steel 316

Tag plate

Aluminium

Axis

Alloy C

Oval gear

PPS

Sensor body

PPS

Cover

PPS

Seal

FFKM

Measuring principle

Oval gear

Type of sensor

Hall effect (Transistor output) or Reed contact (reed switch outpu)

Measuring range

0.5...500 l/h (0.13...132 gph) (depends on the variant)

Standard K factor

For flow range 0.5...120 l/h: 1000 pulses/l • For flow range 15...500 l/h: 400 pulses/l

Measurement deviation

± 1 % of measured value

Repeatability

≤ 0.03 % of measured value

Operating voltage

4.5...24 V DC

Current consumption

≤ 9 mA (Hall effect sensor)

Output

Hall effect sensor – Frequency on open collector, NPN, max. 25 mA – 4.5...24 V DC – Recommended load: 1.8 KΩ Pull up at 24 V DC • Reed contact – Frequency – Switching voltage:...

Fluid temperature

20...+ 80 °C (- 4...+ 176 °F)

Fluid pressure

5 bar (72 PSI)

Dynamic viscosity η

1 Pa.s max. (higher on request)

Maximum particle size

75 µm To prevent damage from dirt or foreign matter, we strongly recommend the installation of a 75 µm (200 mesh) strainer as close as possible to the inlet side of the meter.

Pipe connection

Thread ¼" (G or NPT)

Electrical connection

5-wire cable • 1 m length

Ambient temperature

Operation and storage: - 15...+ 80 °C (+ 5...+ 176 °F)

Relative air humidity

≤ 85 %, without condensation

Height above sea level

Max. 2000 m

Operating condition

Continuous

Material

PVDF wetted, FKM seal

Pressure Rating

10 bar

Temperature Range

0°C to +80°C

IP Rating

IP65

HS Code

9026.10

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