76063 Honeywell Sensing and Control, 76063 Datasheet - Page 10

• Manufacturer Part Number: 76063
• Description: SENSOR, PRESSURE SWITCH, NC, 25-50PSI
• Manufacturer: Honeywell Sensing and Control

Specifications of 76063

• Svhc: No SVHC (18-Jun-2010)
• Connection Size: 0.125"
• Termination Type: Screw
• Contact Configuration: NC
• Contact Current Ac Max: 1A
• Contact Current Dc Max: 15A
• Contact Material: Silver Alloy
• Switch Operation: SPST
• Terminal Type: 8-32 Screws, Œ" Blade
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

230642Final Switch Catalog .indd 10
Switch Definitions and Terminology
Pressure/Vacuum Switch - A device that
senses a change in pressure/vacuum and
opens or closes an electrical circuit when
the set point is reached.
Set Point - The pre-determined pressure/
vacuum value that is required to open or
close the electrical contacts in the switch.
Electrical Contacts - The elements in
the switch that electrically respond to the
media applied to the actuator. Snap
action contacts with a
“self-cleaning” wiping effect are used
in Series III and Series V switches. Direct
action blade contacts are used
in the 5000 Series.
Pressure Switch Actuator - The
member in the switch which receives
the media and ultimately strokes the
electrical contacts to open or close at the
designated set point. The actuator in the
Series III is a beryllium copper or silicone
rubber diaphragm. An elastomeric
diaphragm or piston actuator is used in
the Series V.
The 5000 Series uses a polyimide
film diaphragm.
Normally Open (SPST-N.O.) - A
normally open switch does not conduct
an electrical signal until the actuator is
moved by the media causing the contacts
to close.
Normally Closed (SPST-N.C.) - A
normally closed switch conducts electricity
until the actuator is moved by the media
causing the contacts to open.
Dual Circuit (SPDT) - A normally open
and normally closed circuit are contained
in a switch.
Dual Circuit (N.O./N.O.) - Switch
contains two normally open circuits.
Dual Circuit (N.C./N.C.) - Switch contains
two normally closed circuits.
System Pressure/Vacuum - This is the
normal pressure/vacuum that would be
present at the switch actuator. This value
is important in order to apply the proper
switch configuration. Even though the set
point may be relatively low, the system
pressure would continue to be applied to
the switch actuator in most cases.
Proof Pressure - This specification is
the maximum over-pressure condition
that the switch can have for a specified
period of time and still maintain set point
integrity.
Burst Pressure - This specification is
the maximum over pressure condition
that the switch can withstand without
experiencing leakage.
Dry Circuit Load - Typically this would
be a very low electrical load associated
with microprocessors when the open
circuit voltage is .03V or less and the
current is 40mA or less.
Resistive Load - A load in which the
voltage is in phase with the current.
Inductive Load - A load in which the
voltage leads the current.
Motor Load - The load of a motor at
rated horsepower and speed.
Capacitive Load - A load which the
current leads the voltage.
Differential - The difference between
opening (actuation) pressure and the
closing (de-actuation) set points. This
is also referred to as “dead band”. For
example, a switch set at 150 PSI to open
on increasing pressure and close at 95
PSI on decreasing pressure
would have a differential of 55 PSI (150-
95=55).
10
Convert
H
H
BARS
Hg”
Hg”
kPa
PSI
PSI
PSI
PSI
C°
2
2
F°
O”
O”
Conversion Factors
H
H
BARS
Hg”
Hg”
kPa
PSI
PSI
PSI
PSI
C°
To
2
2
F°
O”
O”
1.8(C° +17.78)
Multiply By
F-32÷1.8
27.6778
13.5962
6.8948
.03613
.07355
.4912
2.036
.145
14.5
.069
11/3/2005 2:13:36 PM