I-9
PRESSURE SWITCHES
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ø1.10˝
(ø28)
ø1.25˝
(ø32)
3/32˝ or
1/8˝ ALLEN
WRENCH
ADJUSTMENT
SCREW
RED, NO.
GREEN, NC.
BLACK, COM.
1.10˝
(28)
DIN
43650A
1.95˝
(50)
DIN 43650A – MALE HALF ONLY
2.20˝
(56)
INGRESS PROTECTION OPTION (IP66)
WITH FLYING LEADS FACTORY SET ONLY
1.58˝
(40)
PRESSURE
PORT
FLYING LEAD
B
DIN 43650-HNR
1.12˝ AF
(28)
1.78˝
(45)
ADJUSTMENT SCREW
UNDER CAP SCREW
2.80˝
(71)
PRESSURE
PORT
2.14˝
(54)
PS41 – Economical
Miniature Pressure Switches
3.5 to 100 psi (0.24 to 7 bar)
These miniature pressure switches are designed for demanding applications where
space and/or price are strong concerns. The switches utilize a piston/diaphragm
design, which incorporates the high proof pressure of piston technology with the
sensitivity of diaphragm designs. Switches are field adjustable via an Allen head screw
that is hidden to protect against unauthorized tampering.
Specifications
Switch SPST; SPDT
Repeatability See Table 1
Wetted Parts
Diaphragm Material Nitrile (optional EPDM, Viton® or Neoprene)
Fitting Brass (optional 316 Stainless Steel)
Electrical Termination DIN 43650A IP65; Terminals IP00; Flying Leads IP65;
Option IP: IP66; Conduit with Flying Leads IP65
Proof Pressure 350 psi (24 bar)
Burst Pressure 700 psi (48 bar)
Approvals CE, UL Approved units available
Weight, Approximate Brass: 0.3 lbs. (0.14 kg)
Dimensions
RIGHT ANGLE DIN (HNR)
Options Selected
Diaphragm Material No option,
-10A, -SP or -RD -RD or -RD and -G -SP or -10A
Nitrile 15°F to 185°F
(-9°C to +85°C)
15°F to 250°F
(-9°C to +121°C)
15°F to 212°F
(-9°C to +100°C)
Viton®0°F to 185°F
(-18°C to +85°C)
0°F to 250°F
(-18°C to +121°C)
0°F to 212°F
(-18°C to +100°C)
EPDM -10°F to +185°F
(-23°C to +85°C)
-10°F to +250°F
(-23°C to +121°C)
-10°F to +212°F
(-23°C to +100°C)
Neoprene -10°F to +185°F
(-23°C to +85°C)
-10°F to +250°F
(-23°C to +121°C)
-10°F to +212°F
(-23°C to +100°C)
Note: Switches may function below the cold temperature limit but the set points and deadband will increase.
Consult factory for details.
Options Selected AC DC
No option or -RD 5 amps @ 125/250 Volts 5 amps resistive,
3 amps inductive @ 28 Volts
-G or -RD with -G 1 amp @ 125 Volts 1 amp resistive,
0.5 amp inductive @ 28 Volts
-SP without -G 10.1 amps @ 125/250 Volts
-SP with -G 2 amps @ 125/250 Volts
Recommended Operating Temperature Limits
Electrical Switch Ratings
I-10
PRESSURE SWITCHES
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Pressure Range Code Pressure Range Repeatability* Average Deadband**
10 3.5-8 psi (0.24-0.55 bar) ±0.35 psi (0.024 bar) +2% of setting 1.50 psi (0.14 bar) +7% of setting
20 7-30 psi (0.48-2.07 bar) ±0.8 psi (0.055 bar) +2% of setting 3 psi (0.21 bar) +8% of setting
30 25-100 psi (1.7-6.9 bar) ±2.0 psi (0.138 bar) +2% of setting 5 psig (0.28 bar) +10% of setting
* Repeatability and set point of units may change due to the effects of temperature.
** These numbers are for the standard microswitch. With either the -SP or -10A option, the values are typically 20% greater than those
listed. With the -RD option, the values will be typically 25% less than those listed. In certain applications deadband can be tailored
and controlled to customer specifications. Consult factory for details.
mInIaTURE
Table 1 — Pressure Range Codes
1 Pressure Range Code
Insert Pressure Range Code from Table 1, below.
2 Pressure Fitting1
Brass
-2MNB = 1/8˝ NPTM
-4MNB = 1/4˝ NPTM
-2MGB = 1/8˝ BSPM (G type)
-4MGB = 1/4˝ BSPM (G type)
-4MSB = 7/16˝-20 SAE Male
-6MSB = 9/16˝-18 SAE Male
316 Stainless Steel
-2MNS = 1/8˝ NPTM
-4MNS = 1/4˝ NPTM
-4MGS = 1/4˝ BSPM (G type)
-4MSS = 7/16˝-20 SAE Male
3 Circuit
-A = SPST/N.O.
-B = SPST/N.C.
-C = SPDT
4 Electrical Termination
-SP = Spade Terminals2
-FLXX = Flying Leads3
-FLSXX = Flying Leads w/PVC Shrink Tubing3
-ELXX = 1/2˝ NPT Male Conduit w/Flying Leads4
-CABXX = 18 AWG PVC Cable5
-H = DIN 43650A Male Half Only6
-HR = Right Angle DIN 43650A Male Half Only6
-HC = DIN 43650A 9mm Cable Clamp6
-HCR = Right Angle DIN 43650A 9mm Cable
Clamp6
-HN = DIN 43650A with 1/2˝ Female NPT Conduit6
-HNR = Right Angle DIN 43650A with 1/2˝ Female
NPT Conduit6
5 Options7
-V = Viton® Diaphragm
-N = Neoprene Diaphragm
-E = EPDM Diaphragm
-10A = 10A @ 125/250 VAC Max. Rating
-G = Gold Contacts
(for loads less than 12 mA @ 12 VDC)
-RD = Reduced Differential
(25% reduction typical)
-IP = Ingress Protection8
-OXY = Oxygen Cleaned
-WF = Weather Pack Connector, Female
-WM = Weather Pack Connector, Male
-DE = Deutsch Connector, Male, DT04 Series
6 Fixed Set Point (optional)
A. Specify set point -FS
(in PSI or BAR, see example)9
B. Set Point Actuation
R on Rising Pressure
F on Falling Pressure
Example: -FS0.5BARF for 0.5 BAR Falling
or -FS5PSIR for 5 PSI Rising
Notes:
1. Other fittings available.
Consult factory.
2. Requires -10A or -G option.
(20% increase in deadband
typical)
3. 18˝ is standard. Specify lead
length in inches (max. 48˝).
e.g. -FL18 or -FLS30.
4. 18˝ is standard. Specify lead
length in inches (max. 48˝).
e.g. -EL18 or -EL30.
5. 36˝ is minimum. Specify
cable length in inches. e.g.
-CAB36 or -CAB120.
6. DIN connectors require -C
SPDT circuit.
7. Options -10A, -G or -RD
cannot be combined.
8. Ingress Protection is
available only with -FL, -FLS
or -CAB Electrical
Termination choices.
Ingress Protection requires
Fixed Set Point -FS.
9. Set Point must be within
Pressure Range selected in
Step 1.
PS41 -10 -4MNB -C -H -XX -XXXX
1 2 3 4 5 6
How To Order
Use the Bold characters from the chart below to construct a product code. Please reference Notes.