Bailey & Mackey Pneumatic Pressure Switches 1361

Description

Pneumatic Pressure Switches are ideal for use where an electric circuit cannot be used. This type of pressure switch
operates on an air bleed system. Gases other than air should not be used as the pilot medium.
 For use in pneumatic powered systems
 Signal above set point suffix A
 Signal below set point suffix B
 Automatic reset
 Adjustable Set Point
 Robust & Reliable
 Diaphragm Operated < 42 Bar
 Piston Operated > 42 Bar

Mechanical Specifications

Pressures
Type No.     Pressure Range    Hysteresis Typical
1361                 -1 to 0.07 bar         40 mbar
1361                 -1 to 1 bar               40 mbar
1361                 0.2 to 4 bar            70 mbar
1361                 0.5 to 10 bar          0.3 bar
1361                 0.7 to 14 bar          0.4 bar
1361                 2 to 28 bar             0.6 bar
1361                2 to 42 bar              0.8 bar
1461                10 to 125 mbar      3 mbar
1461                15 to 250 mbar      6 mbar
1461                25 to 400 mbar     10 mbar
1561                9 to 100 bar            10 bar*
1561                14 to 200 bar          18 bar*
1561               20 to 400 bar          25 bar*
*Typical for mid-range set point

Standard Materials (1361 & 1461)
Diaphragm               Beryllium Copper
Seal                            Gas Filled PTFE ≤ 10 Bar
Nitrile                       Rubber ≥ 10 Bar
Base                          Brass
Housing                   Aluminium / Zinc Diecast
Cover                        Glass Filled Nylon with Neoprene Seal
Connecting             Block Brass
Amplifier Valve     Aluminium / Zinc body with Nitrile Seals

Maximum Pressure
To ensure long service and life select the pressure range as follows:
Dynamic pressure applications Pmax = 75% of Range
Static pressure applications Pmax = 100% of Range
Maximum Pressure that can be applied is 125% of pressure range

Signal Air Supply
Compressed air at a supply pressure between 2 and 8 bar is required to operate the switch. Signal output is 200 NI/min at 5.5 bar
with a 10% pressure drop. The flow of air through the bleed from the back-pressure valve when it is open is less than 3 NI/min. A
25µM filter should be fitted in the supply line.

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