China Pressure Switches Sensor Switch Micropressure Switches

The Sensor of Switches utilize Diaphragm-Piston Conbination, 500/18D Switches use Diaphragm Sensor can be suitable for neutral gas, lubricating oil, light fuel ect. Fluid medium. 505Electronic Tube & Transistor /18D Switches use no-leak piston sensor, can be fit for lubricating oil, light fuel such neutral lube medium. The Set Point is adjustable, and its adjustable range is from 0.5Mpa to 40Mpa.(If special requirments is needed, please refer to our Application Handbook )Features
Ultra-compact designed control system, guarantee the switching frequence to be 100 times/min., and good perofrmance of vibration resistance.
Remarks: In the practice, even the temporal peak value of pressure, should no exceed the Max. Allowable Pressure.
I-means the connection is Female Screw,
P-means the connection is Flange
Dead Band Non-AdjustableSet Point adjustable range MpaDead Band No Greater ThanMax. Allowable pressure* MpaMaterial of sensorProcess Connection TypeConnection(F)Weight KgOrder Content No.Lower limit of Set Point Range MpaUpper limit of Set Point Range MpaShellSealing RingPiston500/18D Diaphragm Type Pressure Switch-0.1…00.0150.028AlNitrile RubberSteelIG1/4"0.20880100-0.1…00.0150.02P08811000.02…0.20.020.04IG1/4"08802000.02…0.20.020.04P08812000.05…0.80.040.13IG1/4"08803000.05…0.80.040.13P08813000.1…1.60.060.24IG1/4"08804000.1…1.60.060.24P0881400505/18D Piston Type Pressure Switch0.5…70.8240AlNitrile RubberSteelIG1/4"0.208821000.5…7Cleaning Swab 0.82Hydraulic Parts P08831001…161.23.5IG1/4"08822001…161.23.5P08832002.5…251.54IG1/4"08823002.5…251.54P08833004…401.84.560IG1/4"08824004…401.84.560P0883400
Remarks: In the practice, even the temporal peak value of pressure ,should no exceed the Max. Allowable
Pressure.
I...means the connection is Female Screw,
P...means the connection is FlangeThe Adjustment of Set Point
[Example] Choose Order No. 0882200 Switch, a contact signal is required to be generated when pressure falls
to 8Mpa(The Decreasing Set Point), see steps as following:To screw the Switch into connection of Oil Pressure Checkout Test Set(if the connection is Flange, then choose
the Flange connection of the Checkout Test Set). Exert pressure on it for 2 minutes simulate its practical
working situation, thereafter to make the setting.link the Out-put lead with Multimeter.
Screw-off the screws on the housing.
Add the pressure to 8Mpa, this value can be read from the standarded pressure gauge.
Loose the locknut, use socket screwwrench (Φ 5mm), clockwise rotate the Set-point Adjusting Bolt, to make the
Set-Point become bigger, until it switches at 15Mpa.Tighten the locknut, vering the testing pressure to makeCutting & Fold-bend Machine it change up and down arround 8Mpa, check if the
Switch switches at 8Mpa when pressure falls, this value is the Decreasing Set Point need to be set, the
correspondent Increasing Set Point to be 0.8Mpa plus 2.3Mpa(The Dead Band), namely 10.3Mpa(approximately).Selection and Installation
*The Set Point must be within the aAdjustable Range, Dead Band is expressed as Typical at mid-range.
Normally it is the 20% to80% of the Ajustable Range.*If the switches are outdoor application, sufficient protections are necessary, for the severe variation of the
ambient temperature, radiation of the sunlight, permeation of the corrosive gas or water, will influence the life of
the switches.*During the process of installation or disassembly, a spanner MUST be used to clip and tighten the sensor,
absolutely avoid the countermovent between the sensor and housing of the switches(please refer to the
drawings)*Regarding those controlled fluid medium with peak value of pressure and plusation pressure, a damper can be
installed at the connection, to eliminate negative influence*On-Off current should not be greater than the Rating.
*If the connection of the Switches are threaded type, the depth for the pipe to go in should not exceed 12mm.*During the process of installation or disassembly, a spanner MUST be used to clip and tighten the sensor,
absolutely avoid the countermovent between the sensor and pipe.