Description

Kofloc RK1700 Variable Area Flowmeter

Kofloc RK1700 Variable Area Flowmeter 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. 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.

Kofloc RK1700 Variable Area Flowmeter Features

The Model RK1700 Series Flowmeter centers the focus on cost reduction using SUS 316 as the material of construction.
This flowmeter covers flow ranges from 1 L/MIN to 50 L/MIN and can be shipped in one week after the customer’s purchase order.

Specifications

Detailed Technical Specifications

Parameter	Specification
Manufacturer / Brand	Kofloc (Kojima Instruments Inc.)
Model Series	RK1700 Series / RK1700
Focus Keyword Target	Kofloc RK1700 Variable Area Flowmeter
Measurement Principle	Variable Area Flowmeter (Rotameter with Float)
Compatible Media	Clean, non-corrosive gases ( $Air$ , $N_2$ , $Ar$ , $O_2$ , $CO_2$ ) and liquids ( $H_2O$ , light oils)
Standard Flow Ranges (Air)	$0.5text{--}5 text{SCCM}$ up to $1text{--}10 text{SLM}$ (Full scale variants available)
Standard Flow Ranges (Water)	$0.1text{--}1 text{mL/min}$ up to $10text{--}100 text{mL/min}$
Measurement Accuracy	$pm 5%$ ull Scale (Standard) $pm 2%$ Full Scale (Precision options)
Max Operating Pressure	$0.5 text{MPa}$ $5 text{bar}$
Operating Temperature	$5^circtext{C to }60^circtext{C}$ $41^circtext{F to }140^circtext{F}$
Body & Fitting Materials	Stainless Steel (SUS304/SUS316) or Brass; Pyrex Glass Tube
Connection Types	$1/4" text{NPT}$ Female, $1/8" text{NPT}$ Female, or Compression Fittings

Features

High-Precision Fine Control: Integrated micro-metering needle valve enables smooth, precise adjustment of minute gas and liquid flow rates.
Compact Metal-Cased Construction: Structural metal body shields the glass tube against accidental mechanical impacts while maintaining a compact panel footprint.
Clear Direct-Reading Scale: Bold, high-contrast scale lines etched directly on the glass tube allow fast, parallax-free visual reading.
Versatile Material Combinations: Available with stainless steel, brass, or resin wetted parts, paired with glass, stainless steel, or ruby floats to match fluid compatibility.
Zero Electrical Power Required: Fully mechanical operation delivers continuous visual flow indication without wiring or power supply constraints.

Applications

Analytical Instrumentation: Carrier and detector gas control for gas chromatographs and atomic absorption spectrometers.
Semiconductor & Vacuum Equipment: Controlled inert gas purging ( $N_2/Ar$ ) for vacuum chambers, load locks, and optical sensors.
Environmental & Gas Sampling: Sample flow rate regulation in continuous emissions monitoring systems (CEMS) and gas analyzers.
Medical & Research Laboratories: Fine gas dosing in bioreactor sparging, chemical synthesis, and university research benches.

Kofloc RK1700 Variable Area Flowmeter

Kofloc RK1700 Variable Area Flowmeter Features

The Model RK1700 Series Flowmeter centers the focus on cost reduction using SUS 316 as the material of construction.

This flowmeter covers flow ranges from 1 L/MIN to 50 L/MIN and can be shipped in one week after the customer’s purchase order.

Detailed Technical Specifications

Parameter

Specification

Manufacturer / Brand

Kofloc (Kojima Instruments Inc.)

Model Series

RK1700 Series / RK1700

Focus Keyword Target

Kofloc RK1700 Variable Area Flowmeter

Measurement Principle

Variable Area Flowmeter (Rotameter with Float)

Compatible Media

Clean, non-corrosive gases (

Air

N_2

Ar

O_2

CO_2

) and liquids (

H_2O

, light oils)

Standard Flow Ranges (Air)

0.5text{--}5 text{SCCM}

up to

1text{--}10 text{SLM}

(Full scale variants available)

Standard Flow Ranges (Water)

0.1text{--}1 text{mL/min}

up to

10text{--}100 text{mL/min}

Measurement Accuracy

pm 5%

ull Scale (Standard)

$pm 2%$ Full Scale (Precision options)

Max Operating Pressure

0.5 text{MPa}

5 text{bar}

Operating Temperature

5^circtext{C to }60^circtext{C}

$41^circtext{F to }140^circtext{F}$

Body & Fitting Materials

Stainless Steel (SUS304/SUS316) or Brass; Pyrex Glass Tube

Connection Types

1/4" text{NPT}

Female,

1/8" text{NPT}

Female, or Compression Fittings

Features

High-Precision Fine Control: Integrated micro-metering needle valve enables smooth, precise adjustment of minute gas and liquid flow rates.

Compact Metal-Cased Construction: Structural metal body shields the glass tube against accidental mechanical impacts while maintaining a compact panel footprint.

Clear Direct-Reading Scale: Bold, high-contrast scale lines etched directly on the glass tube allow fast, parallax-free visual reading.

Versatile Material Combinations: Available with stainless steel, brass, or resin wetted parts, paired with glass, stainless steel, or ruby floats to match fluid compatibility.

Zero Electrical Power Required: Fully mechanical operation delivers continuous visual flow indication without wiring or power supply constraints.

Applications

Analytical Instrumentation: Carrier and detector gas control for gas chromatographs and atomic absorption spectrometers.

Semiconductor & Vacuum Equipment: Controlled inert gas purging ( $N_2/Ar$ ) for vacuum chambers, load locks, and optical sensors.

Environmental & Gas Sampling: Sample flow rate regulation in continuous emissions monitoring systems (CEMS) and gas analyzers.

Medical & Research Laboratories: Fine gas dosing in bioreactor sparging, chemical synthesis, and university research benches.

Kofloc RK1700 Variable Area Flowmeter

Product Note:

Description

Kofloc RK1700 Variable Area Flowmeter

Kofloc RK1700 Variable Area Flowmeter Features

Specifications

Detailed Technical Specifications

Features

Applications

Related Products

Kofloc RK1700 Variable Area Flowmeter

Product Note:

Description

Kofloc RK1700 Variable Area Flowmeter

Kofloc RK1700 Variable Area Flowmeter Features

Specifications

Detailed Technical Specifications

Features

Applications

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