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MKCM type AIR SIGNAL

Flow switch included
It detects the fluid flow and switches the device ON or OFF at the specified flow rate.
*The switch is fixed (the setting cannot be changed later).
The flow is visible at a glance.
This is a current galvanometer that checks the fluid flow by observing the movement of a float inside a transparent tube.
With protective cover
The metal protective cover reduces the possibility of damage from external impacts.
The mounting direction does not matter.
Because it uses a spring inside, you can freely adjust the mounting position to upward, downward, or sideways.

Model List

Model
Dimensions (mm)[Due to the casting surface, there may be individual variations in dimensions.]
Flow rate (L/min)
Connection port diameter
Length
Width
Depth
Minimum inner diameter
φmm
Operating flow rate specified range
maximum
MKCM20-1TA-OFF
Rc1/8
80
30
22
6.5
1 to 40
300
MKCM20-1TA-ON
MKCM20-2TA-OFF
Rc1/4
80
30
22
6.5
1 to 40
300
MKCM20-2TA-ON
MKCM20-3TA-OFF
Rc3/8
86
30
25
6.5
1 to 40
300
MKCM20-3TA-ON
MKCM30-2TA-OFF
Rc1/4
100
44
32
9.5
5 to 100
600
MKCM30-2TA-ON
MKCM30-3TA-OFF
Rc3/8
104
44
32
9.5
5 to 100
600
MKCM30-3TA-ON
MKCM30-4TA-OFF
Rc1/2
110
44
32
9.5
5 to 100
600
MKCM30-4TA-ON
MKCM35-4TA-OFF
Rc1/2
124
49
44
13.5
30 to 150
1500
MKCM35-4TA-ON
MKCM35-6TA-OFF
Rc3/4
124
49
44
13.5
30 to 150
1500
MKCM35-6TA-ON
MKCM45-6TA-OFF
Rc3/4
142
62
50
18.0
50 to 300
3000
MKCM45-6TA-ON
MKCM45-8TA-OFF
Rc1
142
62
50
18.0
50 to 300
3000
MKCM45-8TA-ON

Please specify your choice in the box when placing your order or requesting a quote.

Model
MKCM□□-□TA-OFF(ON)
Switch operating flow rate
□L / min
Example: MKCM20-2TA-OFF switch operating flow rate 30 L/min
*Please specify whether you want the 'OFF' or 'ON' contact method.
   'OFF type'... The contact turns OFF when the flow rate decreases (normally open/A contact).
   'ON type'... The contact turns ON when the flow rate decreases (normally closed/B contact).

Standard specifications

Fluid
gas
Working flow rate
Please specify a flow rate value within the specified range of the operating flow rate as described above.
Connection
Rc female thread 
Change to R male thread
It can also be used in combination with an R-type male thread.
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Maximum 60℃
Heat-resistant versions (up to 100°C) are also available.
pressure resistance
1MPa
Pressure-resistant versions (up to 5 MPa) are also available.
Maximum operating voltage
DC, AC 300V
Maximum operating current
DC, AC 0.5A    
Contact capacity
50VA  
Material
transparent tube
Acrylic
Heat-resistant and pressure-resistant versions are made of brass tubing (C3604).
The floats in heat-resistant and pressure-resistant products cannot be visually inspected.
Protective covers
BC (gun metal)
We can also manufacture them in aluminum.
Fitting
C3604 (brass)
We can also manufacture them in stainless steel (SUS).
Spring
SUS304
-
Floats with magnets
Acrylic or
Nylon
Depending on the specifications, aluminum may be used.
O-ring
Nitrile rubber
The heat-resistant and pressure-resistant version uses fluororubber.
Reed switch
Commercial goods
-
Lead Wire
(Standard product 200mm)
Commercial goods 
You can specify the length of the lead wires and change to cabtyre cords.  

Precautions for using the flow switch

1. Precautions regarding the effects of magnetism

  • Since reed switches operate using magnetism, please use them in a location where they are not affected by magnetic fields.
  • The presence of magnetic materials such as iron near the reed switch can cause malfunctions. 

2. Precautions regarding electrical wiring

  • When using a flow switch, be careful with the wiring to prevent overcurrent from flowing to the reed switch due to faulty grounding or other reasons.
  • Flow switches should be used as alarm detectors whenever possible.
    When using this device in conjunction with other electrical equipment, please handle it with due consideration to the potential impact of any malfunctions.
  • Keeping the operating voltage and current as low as possible will extend the lifespan of the reed switch.
    (Under normal conditions of 100V 0.5A, it can be used for approximately 1,000,000 switch operations)
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