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
  1. Accuracy is guaranteed value of average value accumulated for 240s.
  2. Indicates the frequency at the maximum guaranteed flow rate.
  3. For the set value and choice of Output 1 and Output 2, all are factory setting. The setting cannot be changed after installation.
  4. Alarm is selectable only either one of Output 1 or Output 2.
  5. 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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