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MFM500A Flow Switch
MFM500A Flow Switch

•Optional power supply 24VDC or 220VAC
•All stainless steel housing, IP67 protection
•Temperature compensation
•2-way PNP ¦ 2-way NPN ¦ 1 relay output are optional
•Switch output, control point setting continuously on panel
•OLED screen, switchable display between the progress bar and digital display

Features

·Optional power supply 24VDC or 220VAC

·OLED screen, switchable display between the progress bar and digital display

·All stainless steel housing, IP67 protection

·Temperature compensation

·2-way PNP ¦ 2-way NPN ¦ 1 relay output are optional

·No moving parts, maintenance-free

·Switch output, control point setting continuously on panel

·Compact size, support inverted display

·Mounting joint can be equipped with different interfaces for a variety of pipe diameters requirement.


Introduction

MFM500A Flow Switch is an intelligent thermal diffusion principle-based flow monitoring sensor. It adopts ARM processing core and combines with high quality sensors and dedicated circuit. With temperature-compensation and calibration, it can ensure measurement accuracy in the case of water temperature change. It is available for real-time monitoring of pipe water flow. It can be used for cooling or lubrication system flow monitoring to realize pre-warning and protection for critical equipment when there is flow fault. It uses fully enclosed design, stainless steel construction to adapt to a variety of application environment. It is with overvoltage, over-current and reverse polarity protection function. With self-luminous OLED screen, it allows switchable display between the progress bar and digital display numbers. MFM500A supports quick action point set, also it has display inversion function that enables installation in any direction, and no need for frequent adjustment and maintenance. It can be applied for operation protection of large equipment in fields such as power generation, metallurgy, steel, paper, boilers etc.

Specification:

Measure Range:1cm/s~150cm/s (water);

Optimal Range: 3cm/s~100cm/s (water)

Power Supply: (24±4.8)V DC / 220VAC

Working Current: ≤ 60mA

Switch Accuracy: ±10cm/s

Hysteresis: ±2cm/s~±8cm/s

Initial Time: 2s~15s, 8s(typ.)

Switch-off Time:1s~15s, 2s(typ.)

Switch-on Time:1s~13s, 2s(typ.)

Output Signal: 1 relay¦2 NPN¦2 PNP

Output Function: NO, NC(optional)

Relay Characters:

Switch voltage: ≤ 250V AC / 30V DC

Switch current: ≤3A

Transistors Characters:

Switch Voltage Drop: ≤ 1.5V

Switch Current: ≤ 400mA

Display: OLED indicator, resolution 128×32

Electric Protection: Reverse, short-circuit,

Over-voltage

 

Housing: S.S.

Button: PP

Probe: S.S.

Installation: Joint mounting + adaptor

Endurance Pressure: 10MPa

Set: Button

Electric Connection: M12×1 5-pin plug

Gross weight : 265g

Water Temp. : -20℃~80℃

Storage Temp. : -30℃~85℃

Working Temp. : -20℃~70℃

Protection: IP67

Temperature Compensation: 5℃~50℃(water)

Electromagnetic Compatibility: GB/T17626.2/3-2006, GB/T 17626.4-2008

Shock: ≤3g (GB/T JJG 882-2004)

Impact: ≤ 50g/11ms (GB/T 2423.5-1995)


Note: The above specification test medium is water; 5cm/s~100cm/s; 20℃(Factory defaults)

Outline Construction and Electric Connection

Outline Construction and Installation are shown below:

outline dimension of mfm500a flow switch

Suggested Installation Methods

Horizontal  Pipe:

horizontal installation of mfm500a flow switch


Vertical Pipe:

vertical installation of mfm500a flow switch


Two Display

Progress Bar:

progress bar display of mfm500a flow switch

Digital Display:

digital display of mfm500a flow switch

                                                         ▲--Switch Point K1       ∆ --Switch Point K2

Curvilinear relation between digital indication and velocity:


When Switch Point Sign light is flashing, it indicates that the velocity exceeds the switch action velocity


Electric Connection:

electric connection of mfm500a flow switch

M12×1

Color

Pin

220VAC Definition

24V DC Definition

Red

1

Power L

IN+

Black

3

Power N

IN-

Yellow

2

Relay: NO

Relay NO, NPN1, PNP1

Green

5

Relay: NC

Relay NC

Blue

4

Relay: COM

Relay COM, NPN2, PNP2


electric connection of mfm500a flow switch

electric connection of mfm500a flow switch

Order Guide:

MFM500A

Flow Switch

 

Code

Power Supply

DC

24VDC

AC

220VAC

 

 

 

 

Code

Process Connection

C1

M20×1.5 male adaptor(MS601)

C3

G1/2 male adaptor(MS602)

 

 

Code

Output

J

1×Relay Output

N

2×NPN Transistor Output

P

2×PNP Transistor Output

 

 

Code

Probe Length

L1

15mm

L2

18mm

L3

21mm

L4

68mm

 

 

 

MFM500A                 DC           C3         J              L1                          Whole Spec.


Optional accessories: 

MS901 2m 5-pin M12×1 Female Elbow RVVP Cable(Standard)

MS601 M20×1.5 male adaptor

MS602 G1/2 male adaptor

 

Notes

1. Pressure port can be customized for users. Please note in the purchase order.
2. If users have special requirement for the specification or function, please contact us freely.



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