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Industrial Switches, Pressure/Vacuum Ranges
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The PSW790 series has been discontinued.
Please see the PSW-700
SERIES as a possible substitute or consult OMEGA's Pressure Engineering department.
OMEGA’s PSW790 series switches are designed to satisfy most
industrial switch requirements in harsh environments. The
actuators have been proven in more than 20 years of service worldwide.
A Buna-N seal and SPDT switch is standard. Optional FKM or
stainless steel seals extend media compatibility to most fluids, and the
choice of either a hermetically sealed or dual SPDT switches will satisfy
most switching applications.
SPECIFICATIONS
Switch: SPDT
Electrical: 15 A @ 125/250/480 Vac; 0.5 A @
125 Vdc; 0.25 A, 250 Vdc; 6 A @ 30 Vdc
Process Temperature
Range: Buna-N : -18 to 66°C (0 to 150°F)
FKM : -7 to 149°C
(20 to 300°F)
Stainless Steel: -18 to 149°C (0 to 300°F)
Repeatability: ±1% Full Range
Proof Pressure: 400%
minimum
Deadband: Buna-N see "To Order" box
FKM : multiply Buna-N by 1.4
Stainless Steel: multiply Buna-N
by 1.7
Enclosure: Epoxy-coated aluminum.
Process Connection: 1 /2 NPT
Male, 1 /4 NPT Female combination
Electrical Connections:
(2) 3 /4 NPT conduit ports, screw terminals internal
Wetted
Parts: 316 SS, Buna-N
Dimensions: psi ranges: 146 H
x 132 W x 100 mm D (5.7 x 5.8 x 4")
inH2O ranges: D = 130 mm (5.6")
For full product specifications view pdf file in "Related Links"
below
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† All dollar amounts on this site are shown in US currency.
Note: Switches can generally be set between 15 and 100% of nominal range.
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Part Number Builder |
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Option Descriptions
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(1)
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Actuator Seal
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Select
B for Buna-N
V for FKM
SS for Stainless steel
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(2)
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Nominal Range
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Select
-A for 30 in Hg vacuum
-B for +/- 15 in H2O
-C for +/- 30 in H2O
-D for 30 in Hg vacuum/15 psi
-E for 30 in Hg vacuum/30 psi
-F for 30 in Hg vacuum/60 psi
-G for 10 in H2O
-H for 30 in H2O
-I for 60 in H2O
-J for 100 in H2O
-K for 150 in H2O
-L for 15 psi
-M for 30 psi
-N for 60 psi
-O for 100 psi
-P for 200 psi
-Q for 400 psi
-R for 600 psi
-S for 1000 psi
-T for 3000 psi
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(3)
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Switch Options
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Select
for 15 Amp 480 Vac SPDT leave blank
-DS for dual 15 Amp 480 Vac SPDT
-HS for hermetically sealed 11 amp 250 vac SPDT
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NOTE: All combinations may not be valid, check spec sheet for valid part numbers.
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