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Kofloc RK1200 Flowmeter

Kofloc RK1200 Flowmeter

Product Note:

No product notes available.

Description

Kofloc RK1200 Flowmeter

Kofloc RK1200 Flowmeter is a high-precision, multiple-range variable area rotameter engineered for accurate measurement and fine regulation of low gas and liquid flow rates. Manufactured by Kojima Instruments Inc. (Kofloc), the Kofloc RK1200 Flowmeter features a precision-machined pyrex glass tube housed within a rigid block-style body with an integrated high-grade needle valve. Widely utilized in analytical instruments, semiconductor gas cabinets, environmental sampling racks, and medical gas delivery systems, it provides precise visual indication and dependable manual control for critical low-flow applications.

Kofloc RK1200 Flowmeter An area flow meter has a float in a conical cylinder (tapered tube) with a larger end in the upper section and a smaller end in the lower section. The float moves up and down according to the intensity of the flow, and the position at which the float balances indicates the flow rate.

Kofloc RK1200 Flowmeter General Descriptions

Not only simple flow meters that merely measure the flow rate but also flow meters with a valve for flow control, flow meters with a load pressure fluctuation type flow controller, flow meters with a supply pressure fluctuation type flow controller, and flow meters with an alarm switch are available.

This is a grade high precision float-type flowmeter combined with a needle valve capable of very accurate flow control. It is ideal for the measurement and control of minute flows.

Specifications

ParameterSpecification
Manufacturer / BrandKofloc (Kojima Instruments Inc.)
Model SeriesRK1200 Series / RK1200
Focus Keyword TargetKofloc RK1200 Flowmeter
Operating PrincipleVariable Area Flowmeter (Rotameter with Float)
Compatible MediaClean, non-corrosive & mild corrosive gases (Air, N_2, Ar, O_2, CO_2, H_2) and clean liquids
Standard Flow Ranges (Air)0.5-SCCM up to 1-10 SLM (Multiple calibrated options available)
Standard Flow Ranges (Water)0.1-1 mL/min up to 10-100 mL/min
Measurement Accuracypm 2% Full Scale (Precision Grade)  pm 5% Full Scale (Standard)
Max Operating Pressure0.5 MPa 5 bar
Operating Temperature$5^circtext{C to }60^circtext{C}$ ($41^circtext{F to }140^circtext{F}$)
Structural MaterialsBody: SS316 or Brass; Tube: Pyrex Glass; Seals: NBR, Viton, or PTFE
Port Connections$1/4″ text{NPT}$ Female or $1/8″ text{NPT}$ Female

Features

  • High-Precision Needle Valve: Integrated micro-adjustable needle valve provides smooth, high-resolution flow control for low gas and liquid rates.

  • Superior Reading Visibility: High-contrast scale etched onto the glass tube enables quick, parallax-free visual inspections.

  • Multiple Body Material Options: Available in Brass and 316 Stainless Steel bodies to suit a wide spectrum of industrial and corrosive gases.

  • Panel-Mount Friendly: Compact block design with standard front-panel mounting hardware for seamless integration into control consoles.

  • No External Power Needed: 100% mechanical operation provides continuous flow monitoring without wiring, batteries, or signal conditioning.

  • High Repeatability: Precision-machined float and tube geometries ensure stable, reliable readings across long operational cycles.

Applications

  • Gas Chromatography & Spectroscopy: Controlling carrier, purge, and detector burner gas streams in laboratory analyzers.

  • Semiconductor & Vacuum Systems: Inert gas purging ($N_2/Ar$) for load locks, process lines, and vacuum pump exhausts.

  • Environmental Gas Monitors: Setting accurate sample suction rates in air quality monitoring stations and CEMS.

  • Chemical Dosing & Gas Mixing: Regulating fine gas sparging volumes in pilot plants and bio-reaction vessels.

Related Products

Kofloc RK1200 Flowmeter

Kofloc RK1200 Flowmeter An area flow meter has a float in a conical cylinder (tapered tube) with a larger end in the upper section and a smaller end in the lower section.

Product Note:

No product notes available.

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Description

Kofloc RK1200 Flowmeter

Kofloc RK1200 Flowmeter is a high-precision, multiple-range variable area rotameter engineered for accurate measurement and fine regulation of low gas and liquid flow rates. Manufactured by Kojima Instruments Inc. (Kofloc), the Kofloc RK1200 Flowmeter features a precision-machined pyrex glass tube housed within a rigid block-style body with an integrated high-grade needle valve. Widely utilized in analytical instruments, semiconductor gas cabinets, environmental sampling racks, and medical gas delivery systems, it provides precise visual indication and dependable manual control for critical low-flow applications.

Kofloc RK1200 Flowmeter An area flow meter has a float in a conical cylinder (tapered tube) with a larger end in the upper section and a smaller end in the lower section. The float moves up and down according to the intensity of the flow, and the position at which the float balances indicates the flow rate.

Kofloc RK1200 Flowmeter General Descriptions

Not only simple flow meters that merely measure the flow rate but also flow meters with a valve for flow control, flow meters with a load pressure fluctuation type flow controller, flow meters with a supply pressure fluctuation type flow controller, and flow meters with an alarm switch are available.

This is a grade high precision float-type flowmeter combined with a needle valve capable of very accurate flow control. It is ideal for the measurement and control of minute flows.

Specifications

ParameterSpecification
Manufacturer / BrandKofloc (Kojima Instruments Inc.)
Model SeriesRK1200 Series / RK1200
Focus Keyword TargetKofloc RK1200 Flowmeter
Operating PrincipleVariable Area Flowmeter (Rotameter with Float)
Compatible MediaClean, non-corrosive & mild corrosive gases (Air, N_2, Ar, O_2, CO_2, H_2) and clean liquids
Standard Flow Ranges (Air)0.5-SCCM up to 1-10 SLM (Multiple calibrated options available)
Standard Flow Ranges (Water)0.1-1 mL/min up to 10-100 mL/min
Measurement Accuracypm 2% Full Scale (Precision Grade)  pm 5% Full Scale (Standard)
Max Operating Pressure0.5 MPa 5 bar
Operating Temperature$5^circtext{C to }60^circtext{C}$ ($41^circtext{F to }140^circtext{F}$)
Structural MaterialsBody: SS316 or Brass; Tube: Pyrex Glass; Seals: NBR, Viton, or PTFE
Port Connections$1/4″ text{NPT}$ Female or $1/8″ text{NPT}$ Female

Features

  • High-Precision Needle Valve: Integrated micro-adjustable needle valve provides smooth, high-resolution flow control for low gas and liquid rates.

  • Superior Reading Visibility: High-contrast scale etched onto the glass tube enables quick, parallax-free visual inspections.

  • Multiple Body Material Options: Available in Brass and 316 Stainless Steel bodies to suit a wide spectrum of industrial and corrosive gases.

  • Panel-Mount Friendly: Compact block design with standard front-panel mounting hardware for seamless integration into control consoles.

  • No External Power Needed: 100% mechanical operation provides continuous flow monitoring without wiring, batteries, or signal conditioning.

  • High Repeatability: Precision-machined float and tube geometries ensure stable, reliable readings across long operational cycles.

Applications

  • Gas Chromatography & Spectroscopy: Controlling carrier, purge, and detector burner gas streams in laboratory analyzers.

  • Semiconductor & Vacuum Systems: Inert gas purging ($N_2/Ar$) for load locks, process lines, and vacuum pump exhausts.

  • Environmental Gas Monitors: Setting accurate sample suction rates in air quality monitoring stations and CEMS.

  • Chemical Dosing & Gas Mixing: Regulating fine gas sparging volumes in pilot plants and bio-reaction vessels.