Gems Sensors Series Pressure Switch
Elastomer Diaphragm OEM Subminiature Pressure Switch
Quick Specs...
- Formerly Model PMMA/PMMF
- 50 to 300 psi (3.45 to 20 bar)
- Adjustable or Factory Set
Overview / Design Principle:
These compact pressure switches are designed for OEM applications. Designed to be economical by using metal blade contacts in lieu of microswitches they feature long-lasting Elastomer diaphragms. Elastomer diaphragms offer increased sensitivity and life for applications without temperature extremes.
Specifications: |
Wetted Parts
|
Diaphragm: Nitrile Standard (optional EPDM and Viton®)
Fitting: Zinc Plated Steel standard (optional 316 SS)
|
Operating Temperature**
|
Nitrile: 15°F to 230°F (-10°C to 110°C)
Viton®: 0°F to 203°F (-18°C to 110°C)
EPDM: -40°F to 230°F (-40°C to 110°C)
|
Switch*
|
100 VA Max
|
Electrical Termination
|
Exposed Terminals IP00, FL IP00, Option 20/20A IP65, Option 40 IP67
|
Proof Pressure
|
500 psi (35 bar)
|
Burst Pressure |
1000 (69 bar) |
Approvals
|
CE (Limits switch voltage to 42 Vdc)
|
Weight, Approximate
|
0.14 lbs. (0.06 kg) (Brass)
|
*Gold contacts (Option G) may be required for less than 12 VDC or 20 mA.
** Switches may function below the cold temperature limit but the setpoints and deadband will increase. Consult factory for details.
Repeatability / Deadband |
Pressure Range Code
|
Pressure Range
|
Repeatability
|
Average Deadband*
|
15
|
50 - 150 psi (3.45 - 10.3 bar)
|
± 3.0 psi (0.21 bar) + 4% of setting
|
5 psi (0.14 bar) + 5% of setting
|
20
|
150 - 300 psi (10.3 - 20.7 bar)
|
± 4 psi (0.28 bar) + 4% of setting
|
8 psi (0.21 bar) + 5% of setting
|
* In certain applications deadband can be tailored and controlled to customer specifications. Consult factory for details.
|
A |
0.54" (14) |
B |
Hex Head Adjustment Screw |
C |
15/16" AF (24) |
|
|
|
A |
1.120" (29) |
B |
1.85" (47) |
C |
0.80" (20) |
D |
Pressure Port |
E |
HEX 15/16" (24) |
|
|
|
|
A |
0.36" (9.07) |
B |
1.51" (38.30) |
C |
1.58" (40.16) |
|
|