Top Page > Product Information > Variable Flow Meter(Rotameter) > Flowmeter with Bellows Needle Valve(for Low-leak Flow Measurement and Control)MODEL RK1500 SERIES
Variable Flow Meter(Rotameter)
- Flowmeter with Bellows Needle Valve(for Low-leak Flow Measurement and Control)
MODEL RK1500 SERIES - The low-leak rotameter products
The KOFLOC Low-Leak Flow Meter with Bellows Needle Valve MODEL RK1500 SERIES is a high-grade variable area flow meter for vacuum, high-pressure, high temperature and toxic applications, with focus on precision, wide flow coverage and seal integrity.
KOFLOC Low-Leak Flow Meter with Bellows Needle Valve MODEL RK1500 SERIES
Quick Review
• KOFLOC RK1500 SERIES Low-Leak Variable Area Flowmeter
The KOFLOC Low-Leak Variable Area Flow Meter MODEL RK1500 SERIES combines a tri-flat or a rib-guided flow-tube manufactured with a precision glass molding technique, a sophisticated needle valve and a super-precision spherical float. Every product is tested with a helium leak detector before shipping
• H20 and other liquids
The KOFLOC Low-Leak Variable Area Flow Meter MODEL RK1500 SERIES is capable of measuring water and other liquids, not exceeding 1l/min. Ask KOFLOC for more details, including availability of calibration medium.
• KOFLOC Dependability
KOFLOC has 60 years of experience in manufacturing precision flow instruments. KOFLOC products, both standard and off-catalog custom items are well received throughout Japan as the name that manifests confidence. KOFLOC, the fluid expert, is the name professionals trust in precision control of minute flow.
• Wide flow range coverage
The KOFLOC Low-Leak Variable Area Flow Meter MODEL RK1500 SERIES comes in 4 sizes of 120, 150, 200 and 250 mm that cover small flow ranges from 0.5 ml/min to 3 l/min to medium range of 3 ml/min to 30 l/min.
• Steel fittings
The KOFLOC Low-Leak Variable Area Flow Meter MODEL RK1500 SERIES has good anticorrosion characteristics. The fittings are made of SUS316 stainless steel with O-rings of Viton® or fluorocarbon resin fittings. The flow tube is made of Pyrex®. The float is either SUS316 or Viton®.
• Tri-flat & rib-guide flow-tubes
KOFLOC leads the industry in tri-flat flow-tube (for flows between 5 ml/min to 500 ml/min) production with superior precision. The rib-guide flow-tubes are used for medium range flows between 1 l/min and 50 l/min.
The KOFLOC Low-Leak Variable Area Flow Meter MODEL RK1500 SERIES can only be used for the following gases.
Medium (gases): Actual gas calibration is available for the gas listed
Air, Argon: Ar, Carbon dioxide: CO2, Helium: He, Hydrogen: H2, Nitrogen: N2, Oxygen: O2
N2 equivalent conversion factor (CF) is used for other gases. Contact KOFLOC for the availability of actual gas calibration.
Customization and Optional services
• Optional flow-tubes with ±1% accuracy
• Optional dual scale tube for measuring 2 different gases
• H2O version (for water flows below 1 L/Min) is also available.
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• KOFLOC RK1500 SERIES Low-Leak Variable Area Flowmeter
The KOFLOC Low-Leak Variable Area Flow Meter MODEL RK1500 SERIES combines a tri-flat or a rib-guided flow-tube manufactured with a precision glass molding technique, a sophisticated needle valve and a super-precision spherical float. Every product is tested with a helium leak detector before shipping
• H20 and other liquids
The KOFLOC Low-Leak Variable Area Flow Meter MODEL RK1500 SERIES is capable of measuring water and other liquids, not exceeding 1l/min. Ask KOFLOC for more details, including availability of calibration medium.
• KOFLOC Dependability
KOFLOC has 60 years of experience in manufacturing precision flow instruments. KOFLOC products, both standard and off-catalog custom items are well received throughout Japan as the name that manifests confidence. KOFLOC, the fluid expert, is the name professionals trust in precision control of minute flow.
• Wide flow range coverage
The KOFLOC Low-Leak Variable Area Flow Meter MODEL RK1500 SERIES comes in 4 sizes of 120, 150, 200 and 250 mm that cover small flow ranges from 0.5 ml/min to 3 l/min to medium range of 3 ml/min to 30 l/min.
• Steel fittings
The KOFLOC Low-Leak Variable Area Flow Meter MODEL RK1500 SERIES has good anticorrosion characteristics. The fittings are made of SUS316 stainless steel with O-rings of Viton® or fluorocarbon resin fittings. The flow tube is made of Pyrex®. The float is either SUS316 or Viton®.
• Tri-flat & rib-guide flow-tubes
KOFLOC leads the industry in tri-flat flow-tube (for flows between 5 ml/min to 500 ml/min) production with superior precision. The rib-guide flow-tubes are used for medium range flows between 1 l/min and 50 l/min.
The KOFLOC Low-Leak Variable Area Flow Meter MODEL RK1500 SERIES can only be used for the following gases.
Medium (gases): Actual gas calibration is available for the gas listed
Air, Argon: Ar, Carbon dioxide: CO2, Helium: He, Hydrogen: H2, Nitrogen: N2, Oxygen: O2
N2 equivalent conversion factor (CF) is used for other gases. Contact KOFLOC for the availability of actual gas calibration.
Customization and Optional services
• Optional flow-tubes with ±1% accuracy
• Optional dual scale tube for measuring 2 different gases
• H2O version (for water flows below 1 L/Min) is also available.
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Features
♦ Helium leak test before shipping
♦ Use of Bellows needle eliminates any leak from the valve stem
♦ Precision
♦ Excellent repeatability and reliability
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♦ Use of Bellows needle eliminates any leak from the valve stem
♦ Precision
♦ Excellent repeatability and reliability
TOP
Applications
Standard Specifications
| Gases | Liquids | |
|---|---|---|
| Fluids | Air,N2,O2,H2,He,Ar,and CO2 （Calibration by actual gas） For other gases,consultation is necessary regarding whether conversion conditions or calibration by actual gas is to be used. *Optional:Scale indicating two types of fluids | Standard fluid:Water For other liquids,consultation is necessary regarding whether conversion conditions or calibration by actual liquid is to be used. |
| Flow range | 0.5-5ml/min to3-30l/min (See the Capacity Table below.)*Optional:0.5-3ml/min | 0.5-5ml/min to0.1-1l/min (See the Capacity Table below.)*Optional:0.5-3ml/min |
| Accuracy | FS±2%(Measurement point) *Optional:FS±1%(Measurement point) | FS±2%(Measurement point) |
| Proof pressure | 1.0MPa for 100ml/min or less 0.7MPa for 5 l/min or less 0.5MPa for 10 l/min or more | 1.0MPa for 100ml/min or less 0.7MPa for 150ml/min or less 0.5MPa for 200 ml/min or more |
| Available scale | 10:1 *Optional:20:1 | |
| - | ||
| Materials | SS | |
| Body block | SUS316 | |
| Tapered tube | Pyrex | |
| Packing | Viton,fluorocarbon resin | |
| Float | Pyrex,SUS316 | |
| Protective cover | Acrylic resin | |
| Heat resistance | 120°C | |
Capacity Table
| Air ML/MIN,L/MIN | |||||||||
| mm | 5ML | 10ML | 20ML | 30ML | 50ML | 100ML | 150ML | 200ML | 300ML |
|---|---|---|---|---|---|---|---|---|---|
| 120 | O | O | O | O | O | O | O | O | O |
| 150 | - | O | O | O | O | O | O | O | O |
| 200 | - | - | - | - | O | O | O | O | O |
| 250 | - | - | - | - | - | O | O | O | O |
| mm | 500ML | 1L | 2L | 3L | 5L | 10L | 15L | 20L | 30L |
| 120 | O | O | O | O | O | O | O | O | O |
| 150 | O | O | O | O | O | O | O | O | O |
| 200 | O | O | O | O | O | O | O | O | O |
| 250 | O | O | O | O | O | O | O | O | O |
| H2O ML/MIN,L/MIN | |||||||||
| mm | 5ML | 10ML | 20ML | 30ML | 50ML | 100ML | 150ML | 200ML | 300ML |
| 120 | O | O | O | O | O | O | O | O | O |
| 150 | O | O | O | O | O | O | O | O | O |
| 200 | O | O | O | O | O | O | O | O | O |
| 250 | O | O | O | O | O | O | O | O | O |
| mm | 500ML | 1L | |||||||
| 120 | O | O | |||||||
| 150 | O | O | |||||||
| 200 | O | O | |||||||
| 250 | O | O | |||||||
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