®
ENGINEERING,INC.
PSW495B
INSTRUCTION
SHEET
M3421/0902
®
INSTALLATION INSTRUCTIONS FOR OMEGA
PSW495 EXPLOSION-PROOF SWITCH
WIRE LEADS
18˝ LONG
1
⁄
2 NPT MALE
1.50
(38)
1.50
(38)
1.7
(43)
(5)
.21 DIA.THRU
MOUNTING
HOLES
6.4
(156)
2 PLACES
1.15
(29)
2.00
(51)
STANDARD RANGES
30˝ Hg Vac
1
⁄
2 NPT FEMALE
30, 60, 100, 200, 400, 600,
1000, 2000, 3000 psi
ADJUSTMENT OF SETPOINT
INTRODUCTION
ELECTRICAL CONNECTION
A single setpoint adjustment nut is
located centrally inside the cover of
the body. Align bottom of adjustment
nut slot with scale for approximate
pressure setting.
The PSW495 pressure switch is a pre-
cision built U.L. approved control
device which features a single or
dual SPDT, hermetically snap-action
switch. Several wetted material con-
structions for compatibility with
pressure media may be obtained.
The PSW495 switch is available in
SPDT or (2) SPDT circuit. Wire leads
(18˝) are provided for both switches.
SPDT
Common
– White
The adjustment nut is locked in place
with a set screw located centrally in
Normally Open – Blue
Normally Closed – Red
the body below the adjustment nut. A
Series PSW495 switches have a fixed
deadband which will be within the
limits noted on the nameplate.
Ground
– Green
5
⁄64˝ Allen wrench is used to adjust the
(2) SPDT
Common
set screw.
– (JJ) White/Black
(LL) White/Green
For accurate setpoint calibration use
Omega PCL-1B handheld calibrator
with a pump or Omega deadweight
gauge tester.
MOUNTING
The PSW495 snap-action pressure
switch has an anodized aluminum
body and conduit fitting with a 316
stainless steel pressure port.
Normally Open – Blue
Normally Closed – Red
Common
– Black
As received, the pressure switch will
normally be set to approximately 90%
of the indicated range. Pressurize the
system to the required setpoint and
turn the adjustment nut until switch
changes mode. When the setpoint has
been achieved raise and lower pres-
sure to ensure that setpoint is correct.
Normally Open – Blue/Black
Normally Closed – Red/Black
Two holes are used to surface mount
the control. Location of the holes is
shown on the general dimension
drawings. Mount on a vibration-free
surface in any orientation. When tight-
ening control to pressure line, always
use the hex on the pressure connec-
tion. NEVERTIGHTEN BYTWISTING
THE BODY ORTHE CONDUIT HEX.
Ground
– Green
ELECTRICAL RATING
(General Purpose)
11A 125/250Vac resistive;
5A 30Vdc resistive
(Narrow Deadband)
5A 125/250Vac resistive
(Gold Contacts) 1A 125Vac
ORDER CODE
SPDT DPDT
J
JJ
After installation of the control
replace the cover to protect internal
parts from the environment.
P
L
N/A
LL
M3421 8/99 DPS-5C-1P-10/99 Printed in U.S.A.
|
Miele Dishwasher G1470 User Manual
Miller Electric Welder XL AC DC User Manual
Mr Handsfree GPS Receiver GPS01 User Manual
Nikon Cell Phone Accessories D600 User Manual
Olympus Camcorder C480 User Manual
Omega Home Security System PSW 31 User Manual
Optimus Clock Radio 12 1610 User Manual
Oregon Scientific Surge Protector ESD200 User Manual
Panasonic Laptop Docking Station JS950D5C020 User Manual
Panasonic Vacuum Cleaner MCCG917 User Manual