Bailey & Mackey pressure switches 1000 Series Type 1381

Description

This series of pressure switches can be used for all applications where an electrical circuit is required to
close or open at a required pressure.
The robustness of this series of pressure switches enables all applications in all industries to be satisfied.
• Robust & Reliable
• Diaphragm Operated
• Proven Performance
• Enclosure Rating IP65
• Twin Circuit Option
• CE Marked
• LPCB Approved Versions Available
• Fully Adjustable
• Wetted Parts for use with most fluids
• Easily Custom

Mechanical Specificationsised

Pressures
Pressure           Ranges Hysteresis Typical
-1 to +1 bar      0.04 bar
0.2 to 4 bar     0.07 bar
0.5 to 11 bar    0.3 bar
0.7 to 14 bar   0.4 bar
2 to 28 bar      0.6 bar
2 to 42 bar      0.8 bar

Standard Materials
Diaphragm        Beryllium Copper
Seal                     Glass filled PTFE ≤11 Bar
Nitrile                Rubber >11 Bar
Housing            Aluminium/Zinc Diecast
Cover                 Glass filled nylon with Neoprene seal
Base                   Brass

Electrical Ratings
10 Amp at 250V ac 50Hz Inductive Load
1 Amp at 30V dc Inductive Load

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
Installation
The Switches can be mounted directly on the connecting thread. Sealing grooves are machined into the end face of the
parallel threads for the use with sealing washers. A mounting bracket is available if required.
Vacuum Setting
At ambient pressure the switches will be in the operated condition consequently the wiring should be reversed
i.e NO becomes NC.
Connecting Threads
All Connecting threads used in industry are available including British, American and metric. Please state the required
connection thread when ordering.
Flanged fittings are available and most types of Hygienic fittings can be supplied assembled directly onto the Pressure
Switch. If flush diaphragms are required please consult our Technical Sales Department.

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