I-17
PRESSURE SWITCHES
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B
2.20˝
(56)
2.87˝
(73)
ADJUSTMENT
SCREW
UNDER CAP
SCREW
RED, NO.
GREEN, NC.
BLACK, COM.
2.45˝
(62)
ø1.25˝
(ø32)
1.84˝
(47)
ADJUSTMENT SCREW
UNDER CAP SCREW
OPTIONAL
PORT THREAD SIZES
SEE ORDERING DATA
2.80˝
(71)
2.36˝
(60)
1.75˝
(38)
1-1/8˝ AF
(28)
SPDT Shown
PS71 Series / p1of2 / 07-MAY-14
PS71 – General Purpose
Mini Pressure Switches
10 to 5000 psi (0.7 to 344 bar)
These versatile general purpose switches with snap action microswitches can be
used in a wide range of hydraulic and pneumatic applications. Their proven piston/
diaphragm design offers outstanding accuracy over a very wide pressure range with
an outstanding 6000 psi proof pressure. Their modular construction allows Gems
to offer a large number of standard pressure fittings in two materials as well as
numerous electrical ratings and terminations. Users can easily configure this model to
meet their needs.
Specifications
Switch SPST; SPDT
Repeatability See Table 1
Wetted Parts
Diaphragm Nitrile (optional EPDM, Viton® or Neoprene)
Fitting Zinc-Plated Steel (Optional 316 SS)
Electrical Termination DIN 43650A IP65; Spade Terminals IP00; Flying Leads IP65;
Conduit with Flying Leads IP65; IP option IP66
Proof Pressure 6000 psi (414 bar)
Burst Pressure 9000 psi (621 bar)
Approvals CE, UL Approved units available
Weight, Approximate 0.4 lbs. (0.15 kg)
Dimensions
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 only or -RD with -G 1 amp @ 125 Volts 1 amp resistive,
0.5 amp inductive @ 28 Volts
-10A only or -SP without -G 10.1 amps @ 125/250 Volts —
-SP with -G 2 amps @ 125/250 Volts —
Recommended Operating Temperature Limits
Electrical Switch Ratings
DIN 43650A with Cable Clamp
Flying Lead
IP66 Option
Right Angle DIN 43650A with Cable Clamp
I-18
PRESSURE SWITCHES
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PS71 Series / p2of2 / 07-MAY-14
MINIATURE
1 Pressure Range Code
Insert Pressure Range Code from Table 1, below.
2 Pressure Fitting1
12L14 Zinc-Plated Steel
-2MNZ = 1/8˝ NPTM
-4MNZ = 1/4˝ NPTM
-8MNZ = 1/2˝ NPTM
-2MGZ = 1/8˝ BSPM (G type)
-4MGZ = 1/4˝ BSPM (G type)
-4MSZ = 7/16˝-20 SAE Male
-6MSZ = 9/16˝-18 SAE Male
-M10Z = M10 x 1.0, Straight
-M12Z = M12 x 1.5, Straight
-M14Z = M14 x 1.5, Straight
316 Stainless Steel
-2MNS = 1/8˝ NPTM
-4MNS = 1/4˝ NPTM
-2MGS = 1/8˝ BSPM (G type)
-4MGS = 1/4˝ BSPM (G type)
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
-E = EPDM Diaphragm
-N = Neoprene 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
-OF = Oil Free Cleaned9
-R = Restrictor (low damping coefficient) Brass
-SR = Spiral Restrictor (high damping coefficient)
300 Series Stainless Steel10
-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)11
B. Set Point Actuation
R on Rising Pressure
F on Falling Pressure
Example: -FS2BARF for 2 BAR Falling
or -FS20PSIR for 20 PSI Rising
Notes:
1. Other fittings available.
Consult factory.
2. 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. Requires stainless steel
housing.
10. -SR will result in wider
deadbands and slower
response time.
11. Set Point must be within
Pressure Range selected in
Step 1.
Pressure Range Code Pressure Range Accuracy* Average Deadband**
10 10-30 psi (0.7-2.1 bar) ±1.5 psi (0.103 bar) +2% of setting 3.5 psi (0.28 bar) +11% of setting
20 25-75 psi (1.7-5.2 bar) ±2.5 psi (0.172 bar) +2% of setting 3.5 psi (0.28 bar) +11% of setting
30 65-300 psi (4.5-20.7 bar) ±5.0 psi (0.345 bar) +2% of setting 20 psig (1.38 bar) +11% of setting
40 250-1000 psi (17.2-69.0 bar) ±15 psi (1.03 bar) +2% of setting 45 psig (3.10 bar) +12% of setting
50 1000-3000 psi (69-206.8 bar) ±30 psi (2.06 bar) +3% of setting 70 psig (4.83 bar) +12% of setting
60 2500-5000 psi (172.4-344.7 bar) ±50 psi (3.45 bar) +4% of setting 140 psi (9.65 bar) +13% of setting
* Accuracy 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.
Table 1 — Pressure Range Codes
PS71 -10 -4MNZ -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.
