Kofloc RK1450 High Precision Tube Flow Meter


This top-grade high-precision area flowmeter is a fruit of KOFLOC’s challenge to boost the general perception currently conceived by people of flowmeter of being a “mere yardstick” into a new conception that a flowmeter is a “precision instrument.” This flowmeter particularly features its uniquely precision-formed glass tube and ultra-precision ball float.


  • Capable of measuring ultra-minute flows : Can measure a wide range of flows from ultra-minute flows of 0.5-3ML/MIN to flows of 3-30 L/MIN.
  • High precision measurement: High precision measurement of flows is available up to ±2% of full scale (standard specification) or to ±1% of full scale (optional specification).
  • Wide variations : A broad range of variations is available in total length, materials of construction, flow rate, pressure, scale, and so forth to meet diverse applications from a variety of fields.
  • Capable of measuring all kinds of gases : Practically all kinds of gases can be measured, not to mention those standard (Air, N2, O2, H2, He, Ar and CO2).
  • Measurement of water flows also possible : Measurement of full-scale water flows not exceeding 1 L/MIN is also possible. (Dimensions may vary depending upon the specified maximum flow rate.)


  • For integration into your equipment panel
  • For flow inspections at laboratory
  • For semiconductor manufacturing equipment
  • For biotechnology industries
  • Specification

Data sheet

Gases Liquids
Fluids Air, N2, O2, H2, He, Ar, and CO2 (Calibration by actual gas) Standard fluid: Water
For other gases, consultation is necessary regarding whether For other liquids, consultation is necessary regarding whether
conversion conditions or calibration by actual gas is to be used. conversion conditions or calibration by actual liquid is to be used.
* Optional: Scale indicating two types of fluids
Flow range 0.5-5 ML/MIN to 3-30 L/MIN (See the Capacity Table below.) 0.5-5 ML/MIN to 0.1-1 L/MIN (See the Capacity Table below.)
* Optional: 0.5-3 ML/MIN * Optional: 0.5-3 ML/MIN
Accuracy FS±2% (Measurement point) FS±2% (Measurement point)
* Optional: FS±1% (Measurement point)
Proof pressure 1.0 MPa for 100 ML/MIN or less 1.0 MPa for 5 ML/MIN or less
0.7 MPa for 5 L/MIN or less 0.7 MPa for 150 ML/MIN or less
0.5 MPa for 10 L/MIN or more 0.5 MPa for 200 ML/MIN or more
Available scale 10:1 * Optional: 20:1
Materials SS BS
Body block SUS316 Brass
Tapered tube Pyrex®, glass
Packing FKM NBR
Float Pyrex, SUS316, glass
Protective cover Acrylic resin
Temperature MAX60℃
Connection end Rc1/4 (Standard); Rc1/8 (Optional)

Download Datasheet: Kofloc RK1450 Rotameter

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Rudy Wiratama


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