Yokogawa RAGK Short Rotameter
$15.00
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
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.
| Input Signals | Thermocouples (J, K, T, E, N, R, S, B, C, L, U, PLII, W5Re/W26Re), RTDs (Pt100, JPt100), DC Voltage (-50 ~ 50 mV, -5 ~ 5 V, 1 ~ 5 V), DC Current (4 ~ 20 mA) |
|---|---|
| Measurement Accuracy | ±0.05% of F.S. (Thermocouple: ±0.05% of span or ±0.5°C, whichever is greater) |
| Control Cycle | 250 ms |
| Display | High-brightness, 7-segment LED (4-digit PV, 4-digit SV) with 21-segment/41-segment bar graph |
| Setting Method | Front panel key operation |
| Control Outputs | Relay contact output (C-contact), SSR drive voltage output (12 V DC, 40 mA), Linear voltage output (0 ~ 10 V), Linear current output (4 ~ 20 mA) |
| Alarm Outputs | Up to 2 alarm outputs (relay or transistor) |
| Communication | RS-485 communication (Supports Modbus® RTU, Option) |
| Power Supply | 100 ~ 240 V AC, 24 V AC, 24 V DC |
| Operating Ambient Temperature | -10 to 55 °C |
| Storage Temperature | -25 to 65 °C |
| Relative Humidity | 10 to 90% RH (non-condensing) |
| Ingress Protection (IP) Rating | Front panel IP66, Body IP40 (horizontal mounting) |
| Mounting | Panel mount |
| Panel Cutout Dimensions (W x H) | 1/4 DIN (96 x 96 mm), 1/8 DIN (48 x 96 mm) |
| Case Depth | Typically 100 mm (depends on model) |
| Weight | Approx. 500 g (depends on model) |
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