DOG OSCILLATION FLOWMETER

Oscillation Flow Meters

Manufacturer

Kobold

The KOBOLD flowmeter DOG-4 is used for flow measurement of gases. The medium flows through an orifice in a tube. Bypass bores are located at the sides. The dynamic pressure at the orifice causes part of the gas volumetric flow to flow into the bypass. The division ratio remains constant over the whole measuring range. The bypass channel contains the Oscillator – the Measuring cell itself.

When the gas flows through the measuring cell, a gas column oscillates in a U-shaped channel mounted to the left and right. This oscillation frequency is proportional to the flow velocity and thus to the total volume flow. The oscillation frequency is sensed with a platinum sensor. An electrical alternating signal is generated that is displayed in the series connected electronics.

Features & Benefits

Measuring range: 0.12 - 12 ... 60 - 6,000 Nm³/h Air
Connection: Flange DN25 ... 200, ANSI 1 ... 8"
Pmax: PN40
Tmax: 120°C (Ex 60°C)
Accuracy: ±1.5% of Reading (Air)
Output: Pulse Output and Digital Display for Flow Measurement and Counting

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