Original Japan Yokogawas RAMC05 Variable Area Flow Meter
Brand Name:Yokogawa
Model Number:RAMC05
Minimum Order Quantity:1 pc
Delivery Time:7-14 days
Payment Terms:T/T
Price:USD 1350/1 pc
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Original Japan Yokogawas RAMC05 Variable Area Flow Meter
Yokogawa RAMC05 Metal Tube Rotameter – Detailed Introduction
Model Overview:
The RAMC05 is part of Yokogawa’s RAMC series of metal tube variable area flowmeters designed for measuring flow rates of liquids, gases, and steam in a wide range of industrial applications. Unlike glass rotameters, RAMC05 uses a stainless steel measuring tube and an internal float, making it ideal for high pressure, high temperature, and corrosive applications.
Working Principle:
The RAMC05 operates on the variable area principle:
- As the fluid enters from the bottom and flows upward through the tapered metal tube, it lifts the float.
- The float rises until the upward force from the fluid equals the downward gravitational force.
- The position of the float is proportional to the flow rate.
- A magnetic coupling transmits the float position to an external indicator (mechanical or electronic).
Technical Specifications:
Parameter | Specification |
Model | RAMC05 |
Measuring Principle | Variable Area (Float in metal cone) |
Flow Range | - Gases: From 0.03 Nm³/h up to 1600 Nm³/h |
Tube Material | 316L Stainless Steel (others on request) |
Float Material | Stainless Steel / Titanium / Hastelloy / PTFE |
Process Connection | Flange: EN, ANSI, JIS (DN15 to DN80 / ½” to 3”) |
Mounting Orientation | Vertical (bottom to top flow) |
Accuracy | Standard: ±1.5% of full scale |
Repeatability | ±0.1% |
Max Operating Pressure | Up to 100 bar (depending on size and design) |
Max Operating Temperature | Up to 200°C (standard) |
Output | 4–20 mA analog signal (optional) |
Communication Protocol | HART® 7.0 (optional) |
Power Supply | 24 VDC (transmitter version) |
Explosion Protection | ATEX, FM, IECEx (optional Ex ia, Ex d) |
Enclosure Rating | IP66 / IP67 |
Alarm Outputs | Optional limit switches (NAMUR / inductive proximity) |
Available Variants / Codes:
The RAMC05 is modular and can be configured as:
- RAMC05-A: Local indicator only (no external power needed)
- RAMC05-E: With electronic transmitter (4–20 mA / HART)
- RAMC05-EX: Explosion-proof with ATEX/IECEx certified electronics
- RAMC05-S: Sanitary version (available upon request)
Typical Media Compatibility:
- Clean or slightly contaminated gases (air, nitrogen, hydrogen, etc.)
- Liquids including water, oils, acids, alkalis
- Steam (saturated or superheated, with pressure compensation)
Options & Accessories:
- Flow restrictors or damping devices for pulsing flow
- Stainless steel or coated housing for harsh environments
- Heated enclosures for low ambient temperatures
- Remote indicators for control rooms
Typical Applications:
- Chemical dosing and blending
- Air / gas monitoring in utilities
- Cooling water control in power plants
- Boiler feed monitoring
- Process gas flow in refinery or pharma lines
Compliance & Certifications:
- CE, SIL2 (with proper configuration)
- ATEX / IECEx Zone 1 and Zone 2
- NACE MR0175 compliance (for sour gas)
- PED, RoHS
Original Japan Yokogawas RAMC05 Variable Area Flow Meter
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