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Clark Solutions
SM/LM Pressure Switch
Set Point Range, 2-300 PSI
DESCRIPTION
Model SM/LM is a simple, reliable low cost pressure switch that uses a spring loaded diaphragm as the sensing element. A Buna-N diaphragm is standard however a selection of other diaphragm materials are optionally available.
In operation, the diaphragm actuates a snap action electrical switch that insures a positive, instantaneous electrical contact under all operating conditions.
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SPECIFICATIONS
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SM |
LM |
| Set Point Range |
2-120 PSI (0.14-8.3 bar) |
10-300 PSI (0.69-20 BAR) |
| Set Point Tolerance |
±1 PSI or 5% (0.07 bar) |
| Max Operating Pressure |
250 PSI (17 bar) |
2000 PSI (137 BAR) |
| Proof Pressure |
750 PSI (51 bar) |
6000 PSI (413 BAR) |
| Switch Deadband (differential) |
8-16% |
12-24% |
Current Rating
(to 24Vdc,to 240Vac), resistive (10 amp contact available as well as gold contact for low current applications, consult us please) |
3A |
5A |
| Media Connection |
1/8" NPT, 1/4" NPT |
| Circuit Form |
SPST-NO, SPST-NC, SPDT |
| Electrical Connections |
8-32 screw terminals |
| Machined Switch Body |
Brass |
| Diaphragm |
Buna-N (consult us for other materials) |
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ORDERING INFORMATION
ORDER NUMBER ABCDEF
EXAMPLE- SM-190CRWLL
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| PLEASE CALL 1-800-253-2497 TO ORDER THESE ITEMS |
| A=Model |
B=Connection |
C=Circuit |
D=Set Point |
E=Set Direction |
F=Electrical Connection |
| SM |
1=1/4" NPT |
A= SPST-NO |
Specify between 2-300 PSI |
R=Rising |
WL=Wire Leads, 18" |
| LM |
2=1/8" NPT |
B=SPST-NC |
F=Falling |
QC=1/4" Spade |
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Consult us for other connections |
C=SPDT |
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WP=Weather Pack |
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MP=Metri-Pack |
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18 AWG wire, 18” long
Black-common; Red, normally open; Blue, normally closed
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Quick Connects
1/4” Spades
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Female Tower Type
18 AWG wire
6” complete length
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Female 280 Series
18 AWG Wire 6” complete length
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For assistance call 978-568-3400
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