The Yokogawa RAGK Short Rotameter is a compact variable area flow meter designed for accurate measurement of low liquid and gas flow rates. It features a conical glass metering tube with a free-moving float that provides direct visual indication of flow. Because of its simple mechanical design, the RAGK offers reliable flow monitoring without requiring external power.

Typical Applications:
• Gas sampling and analyzer systems
• Laboratory flow measurement
• Purging and dosing systems
• Machinery and equipment monitoring
• Small process flow control

Not Recommended For:
• Large pipeline flow measurement
• Applications requiring high-precision digital flow transmitters

RAGK Small Glass Rotameter

Selection Notes

• Confirm the process medium, such as liquid or gas.
• Verify the required flow measurement range for the application.
• Select the suitable process connection, including threaded or compression fittings.
• Consider optional needle valves for precise flow adjustment.
• In addition, check whether limit switches or alarms are required for monitoring flow conditions.

Why Choose the Yokogawa RAGK Short Rotameter

• Accurate Low Flow Measurement
The RAGK is designed for measuring small liquid or gas flow rates. Its tapered glass tube and float design allow stable and repeatable readings.

• Direct Visual Flow Indication
Flow is indicated by the position of the float in the tube. Therefore, operators can quickly verify flow conditions without additional instrumentation.

• Wide Measurement Range
Typical measuring ranges include 0.002–600 L/h for water and 0.2–6300 L/h for air, making the rotameter suitable for many small-flow applications.

• Compact and Space-Saving Design
The short rotameter structure allows installation in equipment panels or compact process systems.

• Optional Flow Control and Alarms
Needle valves and limit switches can be integrated. As a result, the device can both monitor and regulate flow conditions.

FAQ

Q: How does the RAGK rotameter measure flow?
A: The device uses a tapered glass tube with a floating element. The flow pushes the float upward, and the position of the float indicates the flow rate.

Q: Can the RAGK measure both liquids and gases?
A: Yes. The rotameter is designed for measuring low flow rates of both liquids and gases.

Q: Does the RAGK require electrical power?
A: No. The device provides mechanical flow indication, so it operates without any external power supply.

Q: Where is the RAGK rotameter commonly used?
A: It is widely used in laboratory systems, analyzer panels, gas sampling units and small industrial flow monitoring systems.