Enclosure 6N Pressure Switches
Page 1
CHAPTER
1
INTRODUCTION
The Neo-Dyn
®
Enclosure 6N Switches described in this manual are weather and
explosion-proof, electromechanical sensing devices designed for a wide range of
applications in pneumatic and hydraulic systems up to 10,000 psig, and for use in Zone 1
Potentially Explosive Atmospheres (Division 1 hazardous locations). Models 100P, 110P,
and 200P are gauge pressure switches, Model 180P is a vacuum switch, and Model 160P
is a differential pressure switches.
These devices should not be used as a pressure safety device in your system. Additional
redundant devices such as a pressure relief valve or burst plug should be incorporated if
required.
The most common wetted materials of the pressure and vacuum switches include a
polyimide (Kapton) sensing diaphragm, nitrile O-ring, and aluminum alloy or corrosion
resistant steel (CRES) pressure port. CRES diaphragms and all-welded constructions are
also available in some models for corrosive pressure media and are standard on the
temperature switches.
Setpoint adjustments are easily made through the adjustable range by turning an
adjustment nut located inside the housing.
The standard configuration of these switches will switch up to 11 amp at 125 or 250 VAC, 5
amp resistive at 28 VDC, or 0.5 amp resistive at 125 VDC. When ordered with M Option,
the switch is rated for currents to one amp, but its bifurcated gold contacts will reliably
switch currents in the milliampere and microampere ranges.
These switches have CE Mark, and they also have weatherproof enclosures with IP 66
ingress protection, and that meet the requirements of NEMA 3. 3R, 3S, 4, 4X and 13. The
electrical subassemblies are listed by UL, FM Approvals, CSA, INMETRO, ATEX, and
IECEx.