Kofloc VN Compact Electromagnetic Flow meter

Kofloc VN Compact Electromagnetic Flow Sensor Series is an electromagnetic flow sensor designed for small pipe diameter and low flow. Electromagnetic flow sensor without moving parts suitable for use in machines. With the absence of moving parts, there is less failure due to its contaminants, Low-pressure loss, No straight pipe required, compact design, and easy to installation.

Kofloc VN Compact Electromagnetic Features

Electromagnetic flow sensor without moving parts suitable for use in machines.
With absence of moving parts, there is less failure due to its contaminants.
Low-pressure loss
No straight pipe required, compact design, and easy to install.

Specification

Model		VN05R	VN10R	VN20R
Nominal Diameters		5mm	10mm	20mm
Accuracy-Guaranteed Flow Range		0.05～1L/min	0.5～10L/min	3.0～60L/min
Maximum Operating Flow Rate		3L/min	25L/min	100L/min
Low Flow Cutoff		0.025L/min	0.25L/min	1.5L/min
Accuracy (Liquid Temp. At 25℃)	Frequency Pulse	±2.5%RS (20% ~ 100% of maximum flow rate) ±0.5%FS (5% ~ 20% of maximum flow rate) *1
	Unit Pulse	±2.0%RS (20% ~ 100% of maximum flow rate) ±0.4%FS (5% ~ 20% of maximum flow rate) *1
Type of Fluid		Conductive fluid that does not corrode the material contacting to fluid (ex. cold/hot water)
Fluid Conductivity Range		50μS/cm or more
Fluid Temperature Range		0～+60℃ (No freezing)
Ambient Temperature / Humidity		Temperature: -20～+60℃ Humidity: 35～85％RH (No condensation)
Storage Ambient Temperature Range		-20～+70℃
Working Pressure		1MPa or less
Pressure Loss		20kPa or less
Output 1 *3	Spec. of Output	NPN open collector Current capacity: 20mA DC or less / Voltage: 30V DC or less /
		ON-time residual voltage: 1V or less
		Minimum pulse ON-time 2.5 ms (at 200 Hz frequency pulse) Duty ratio: 50%
	Frequency Pulse *2	Standard 200.0Hz (Settable in steps of 0.1Hz between 20 and 400Hz upon delivery)
		Note: When connecting ASI-100, select 200.0 Hz for output 1.
	Unit Pulse	0.001L/P (Standard)	0.01L/P (Standard)	0.1L/P (Standard)
	Alarm *4	Selectable between Normal Open (Standard) and Normal Close
		Details of alarm (Excitation error / Memory error / Low source voltage / Dry moisture /
		Excessive fluid noise / Excessive flow rate / Reverse flow)
	Switch	Selectable between Normal Open (Standard) and Normal Close
Output 2 *3	Spec. of Output	Same as Output 1
	Unit Pulse	Same as Output 1
	Alarm *4	Same as Output 1
		Note: When connecting ASI-100, select Alarm for output 2
	Switch	Same as Output 1
Response *3		63％ response Dampling time: 2s (Standard) Settable in steps of 1s from 1~99s upon delivery
Cable		Cable length: Approx. 500mm 4 core AWG28 Outer diameter: φ2.8 with a shield
LED Display		One LED display in the main body
		Green: Flow rate display in 3-step speed
		Red: NG status is displayed with number of blinks
Installation Position		Free (Air intrusion shall be avoided.)
Piping Connection		R1/4	R1/2	R1
Protection Level		Indoor use (Equivalent to IP65.)
Power Supply *5		12～24V DC±10%
Consumption Current		100mA DC or less
Weight		Approx. 190 g	Approx. 190 g	Approx. 290 g
Wetted Materials	Body Case	PPS
	Electrode	SUS316L
	Earth Ring	SUS316
	O-Ring	FKM

Accuracy is guaranteed value of average value accumulated for 240s.
Indicates the frequency at the maximum guaranteed flow rate.
For the set value and choice of Output 1 and Output 2, all are factory setting. The setting cannot be changed after installation.
Alarm is selectable only either one of Output 1 or Output 2.
Using isolated power supply and connecting one power supply device per VN flow sensor are recommended

Download Datasheet: Kofloc VN Electromagnetic Flow Meter

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