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Introduction

Principle & Structure

The built-in plunger is connected with the precision spring. When the pressure changes, the spring expansion and contraction will change accordingly. When the pressure reaches the set value, the preset mechanical structure will be triggered and a switch signal will be sent.

Features

Compact structure, using DIN standard plug, extremely convenient wiring, wide measuring range (0~400bar), high overload capacity (up to: 1230 bar), high repeatability, with normally open or normally closed contacts, gold-plated contacts, contacts large capacity. Can be used for water, oil, gas pressure measurement.

application

Gas-liquid dual-use, industrial automation / mechanical equipment / air compression industry / refrigeration and air conditioning.

technical parameter

Sent value:1~8bar ±10%
Withstand voltage:See parameter table 1
Max torque:10Nm
Switch Type:Normally open and normally closed changeover contact
Threaded interface:G1/4;M12x1.5
Protection class:IP65
Operating temperature:-20°C...100°C
-40...100°C
Electrical connections:DIN 43650 
Maximum switching voltage:250VAC & 50VAC
Maximum switching voltage with resistive load:250VAC 3A & 12~50VDC 3A
Switching capacity:250VAC 3A & 12~50VDC 3A

Selection table

KFP31-
Membrane/Plunger Pressure Switches

Interface thread

G1/4

M12x1.5

Connection method

External thread (*)

internal thread

Material description

anodized aluminum

1.4401 (304 stainless steel)  

1.4435 (316L stainless steel)

Action point range (unit: bar)

1...2bar (diaphragm type, long-term pressure resistance upper limit 12bar)

2...5bar (diaphragm type, long-term pressure resistance upper limit 12bar)

5...8bar (diaphragm type, long-term pressure resistance upper limit 12bar)

8...11bar (diaphragm type, long-term pressure resistance upper limit 12bar)

10...25bar (plunger type, long-term pressure resistance upper limit 420bar)

25...50bar (Plunger type, long-term pressure resistance upper limit 420bar)

50...100bar (plunger type, long-term pressure resistance upper limit 420bar)

100...200bar (Plunger type, long-term pressure resistance upper limit 420bar)

output

Normally open + normally closed output

(special option) VARIO

Medium temperature 20...80℃

Medium temperature 40...100℃
The complete data of this selection table, please contact the sales staff or email to sales@kewill-auto.cn for complete samples.
Remarks: The action point has been set at the factory according to the customer's requirements, and it can be fine-tuned on site. It is not recommended to adjust the action point without a standard source on site.
Prev :KBP50 Membrane/Plunger Pressure Switch
Next:KFP35 Series Membrane/Plunger Pressure Switch
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