Series SA1100 Pressure Switches Weatherproof, Explosion-Proof
Specifications - Installation and Operating Instructions
Bulletin IN-1100
Series SA1100 Pressure Switches Weatherproof, Explosion-Proof
actuate one
or two single pole, double throw (SPDT) snap switches in response to increasing or
decreasing pressure of compatible gases or liquids. Three field adjustable operating
ranges are available allowing setpoints up to 500 psig (35 kg/cm
2
). All models are
weather-proof and suitable for hazardous locations as detailed in the chart at lower
right. Read and understand these instructions completely before proceeding with
installation or operation.
SPECIFICATIONS
Temperature Limits:
-30 to 180°F (-35° to 82°C) standard; ATEX and IECEx
compliant at ambient temperature: -4 to 146°F (-20 to 63.6°C).
Process Temperature:
-4 to 146°F (-20 to 63.6°C).
Maximum Operating Pressure:
1200 psig (82.6 bar).
Maximum Pressure Without Bursting:
3000 psig (210 kg/cm
2
).
Process Connection:
1/4˝ or 1/2˝ female NPT.
Electrical Ratings:
SPDT or DPDT contacts rated 15A @ 125/250/480 VAC
(V
~
), 1/8 HP @ 125 VAC (V
~
), 1/4 HP @ 250 VAC (V
~
), 1/2A @ 125 VDC
(V ) resistive, 1/4A @ 250 VDC (V ) resistive.
Wiring Connections:
3 screw type.
Conduit Connections:
3/4˝ female NPT.
Setpoint Adjustment:
7/16˝ hex nut, field adjustable.
Housing Material:
Die cast aluminum.
Finish:
Textured gray polyurethane.
Connection Material:
Aluminum, brass or 316 SS.
Diaphragm:
Buna-N or fluorocarbon.
Weight:
3-1/2 lbs (1.59 kg).
Enclosure Ratings:
Weatherproof and Explosion-proof. Listed with UL and CSA
for Class I, Groups B, C and D; Class II Groups E, F and G. UL-NEMA 4X, CSA-
NEMA 4. ATEX Compliant
2813 II 2 G Ex d IIC T6 Gb -20 ≤ Tamb ≤63.6°C.
Process Temperature ≤63.6°C. Type Certificate No.:KEMA 04ATEX2186 X. IP56
without drain and IP 54 with drain. ATEX Standards: EN 60079-0: 2009; EN60079-
1: 2007. IECEx Certified: For Ex d IIC T6 Gb -20 ≤ Tamb ≤63.6°C Process
Temperature ≤63.6°C. IECEx Certificate of Conformity: IECEx DEK 11.0095 X;
IECEx Standards: IEC 60079-0: 2007; IEC 60079-1: 2007.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: 219-879-8000
Fax: 219-872-9057
www.dwyer-inst.com
e-mail: [email protected]
3-3/8
[84.58]
2-1/4
[57.17]
7-7/16
[188.25]
4-5/8
[116.89]
3-9/16
[91.19]
4 [102.04]
1-13/16
[45.88]
5-25/32
[147.07]
3-3/8
[84.91]
3-31/32
[100.62]
ADJUSTMENT
COVER
PROCESS
CONNECTION
OPTIONAL
BREATHER
DRAIN
COVER
SET SCREW
SWITCH
COVER
3/4 NPT
CONDUIT CONNECTION
3/16 [4.8] DIA.
BRACKET MOUNTING
HOLES
Attention:
Units without the “AT” suffix are not Directive 2014/34/EU (ATEX) compliant. These units are not intended for use in potentially hazardous atmospheres in the EU.
These units may be CE marked for other Directives of the EU.
MODEL CHART
Example
SA11 13 E -A 4 -K 1
SA1113E-A4-K1
Construction
SA11
Series designator, weatherproof NEMA 4X, explosion-proof NEMA 7, 9
Adjustable
Pressure Ranges
11
12
13
10 to 150 psig (0.7 to 10 bar)
20 to 250 psig (1.4 to 17.2 bar)
30 to 500 psig (2.0 to 34.0 bar)
Circuit (Switch)
Options
E
HS
HG
Snap action switch rated 15A @ 125/250/480 VAC, 1/8 HP @ 125 VAC,
1/4 HP @ 250 VAC, 1/2 A @ 125 VDC resistive, 1/4 A @ 250 VDC resistive.
Hermetically sealed snap action switch rated 5 A@ 125/250 VAC, 5 A resistive @ 30 VDC*
Hermetically sealed snap action switch with gold contacts rated 1 A @ 125 VAC, 1 A resistive @ 30 VDC*
Pressure Chamber
Material
A
B
S
Aluminum
Brass
316 SS
Diaphragm
Material
4
5
Buna-N diaphragm and O-ring
Fluorocarbon diaphragm and O-ring
Circuit (Switch)
Type
K
L
SPDT
DPDT (not available with HS or HG switch options)
Process
Connection
1
2
1/4˝ female NPT
1/2˝ female NPT
Options
AT
IEC
DR
ATEX certified construction
IEC IECEx certified construction
Housing with drain - allows condensate to be drained from inside enclosure (meets NEMA 3R instead of 4X)
*Options that do not have ATEX.
