Kewill Global

Pressure switch

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Thery&sthructure

The KFP50 series sensor of the switch is piston type and diapphragm type combination,when the pressure changesamount of spring stretching changed accordingly,when the pressure arrived the setted value,it will trigger preset structure and send a switching signal. The controller uses a piston leak sensor. The controller uses a leak free piston type sensor.

Application

 

Gas-liquid dual-purpose typecan be used to control the compressed air which contains oil mist and other gas which contains oil mist which will not exert corrosion to sensor material and hydraulic oil,water-oul mixture corrisve liquid and neutrial liquid medium with good lubricating propty.

KFP50


Technical parameter

General type Explosion-proof type
Working viscosity <1*10-3㎡/s <1*10-3㎡/s
Switching elements Microswithes Sealed switches
Explosion class ExedⅡCT4~T6
Protection class of enclosure with slot sealing ringIP54:O-ring,IP65(accord with DIN40050) with slot sealing ringIP54:O-ring,IP65(accord with DIN40050)
Ambient temp. ﹣20℃~50℃ ﹣20℃~50℃
Medium temp. 0~120℃ 0~120℃
Mounting posotion Pressure connection cirtically downward
Anti-vibration 505/7D:40m/s2;505/7DK:20㎡/s2 Max.20m/s2
Reapeatibi;lity error ≤2.5% ≤2.5%
Electrical rating AC220V,6A(resistance) DC250V,0.25(resistance),60Wmax
AC250V,5A(esistance),1250VAmax

Dimension

kfp50-1

Wring

KFP50-21

 

SPDT micro switch process; terminal 1-3 pressure rise first switching value

when connected to terminal 1-2; pressure rise first disconnect switch value.

Specification

set point adjustable range(Mpa) Switching difference Max. allowable pressure*Mpa witching times / minute Pressure sensor material Interface thread Weight(kg)
Set point range lower limit(Mpa) Set point range upper limit(Mpa) shell material Piston
0.3…4 0.5 0.9 30 20 Brass Ding Qing rubber belt grooveSealring** Steel G1/4″ 0.8
0.5…6.3 0.6 1.3 G1/4″
0.5…10 0.6 1.6 G1/4″
0.5…16 0.7 1.9 G1/4″
1…23 1 2.5 30 Ding Qing rubber belt groove”O”Sealring** G1/4″
1…40 1.2 2.8 60 G1/4″

Dead band non-adjustable

set point adjustable range(Mpa) Switching difference Max. allowable pressure*Mpa Switching times*Mpa Pressure sensor material Interface thread Weight(kg)
Set point range lower limit(Mpa) Set point range upper limit(Mpa) shell material Piston
0.3…4 0.8…2.5 1.3…2.5 30 20 Brass Ding Qing rubber belt grooveSealring** Steel G1/4″ 0.85
0.5…6.3 1…4 1.6..4 G1/4″
0.5…10 1.1…8 1.6…8 G1/4″
0.5…16 1.3…12 2.2…12 G1/4″
1…23 1.4…12 2.8…12 30 Ding Qing rubber belt groove”O”Sealring** G1/4″
1…40 2…30 4…30 60 G1/4″

Dead band non-adjustable(small Dead

set point adjustable range(Mpa) Switching difference Max. allowable pressure*Mpa Switching times*Mpa Pressure sensor material Interface thread Weight(kg)
Set point range lower limit(Mpa) Set point range upper limit(Mpa) shell material Piston
0.3…4 0.8…2.5 1.3…2.5 30 20 Brass Ding Qing rubber belt grooveSealring** steel G1/4″ 0.8
0.5…6.3 1…4 1.6..4 G1/4″
0.5…10 1.1…8 1.6…8 G1/4″
0.5…16 1.3…12 2.2…12 G1/4″
1…23 1.4…12 2.8…12 30 Ding Qing rubber belt groove”O”Sealring** G1/4″
1…40 2…30 4…30 60 G1/4″

Parameter table

KFP50- Piston pressure switch
Adjustable range
04 Adjustable range:0.3…4
06 Adjustable range:0.5…6.3
10 Adjustable range:0.5…10
16 Adjustable range:0.5…16
23 Adjustable range:1…23
40 Adjustable range:1…40
Explosion class
/ Non
CT4 ExedⅡCT4
CT6 ExedⅡCT6
Material
M Brass
K1 stainless steel 1.4301(304)
interface thread
M20 M20*1.5
X customer
Interface thread
H External thread
KFP50- 10 CT4 M M20 H ←select example