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Barksdale D1S, D2S, D1H, D2H Series Diaphragm Switch

Diaphragm Switch
D1S, D2S, D1H, D2H Series

• Stripped and housed versions available
• High accuracy
• Ideal for pressure or vacuum
• Easy setpoint adjustment
• NEMA 4 (Housed Models)
• Up to 3 setpoints available in one switch

Select a link under the "item" tab below to order.

Table 1Table 2Table 3Table 4Table 5Table 6
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Table 1H
Table 2Base Configuration
D1HSingle setpoint housed version
D1SSingle setpoint stripped version
D2HDual setpoint housed version
D2SDual setpoint stripped version
D3HTriple setpoint housed version
Table 3Limit Switch
-A10 amps @ 125/250 VAC; 3 amps @ 480 VAC; (standard for pressure range 3SS, 80SS or 150SS)
-B10 amps @ 125/250/480 VAC; 2 amps @ 600 VAC; 0.05 amps @ 125 VDC; 0.03 amps @ 250 VDC
-C10 amps @ 125/250/480 VAC; 2 amps @ 600 VAC; 0.1 amps @ 125 VDC; 0.05 amps @ 250 VDC
-H10 amps @ 125/250 VAC; 3 amps @ 480 VAC; (standard for pressure range 2SS or 18SS)
-J10 amps @ 125/250 VAC; 3 amps @ 480 VAC; (comes with an elastomer boot, not UL approved)
-M10 amps @ 125/250 VAC; 3 amps @ 480 VAC; 0.5 amps @ 125 VDC; 0.25 amps @ 250 VDC (not UL approved)
-GH1 Amp @ 125 VAC; 1 Amp @ 24 VDC with gold contacts (not UL approved)
-AAHermetically sealed; 4 amps @ 125/250 VAC (not available on 2SS or vacuum models)
-CCHermetically sealed; 10 amps @ 125/250 VAC (not available on 2SS or vacuum models)
-GHHermetically sealed; 1 Amp @ 125 VAC with gold contacts (not available on 2SS or vacuum models)
-HHHermetically sealed; 5 amps @ 125/250 VAC (not available on 2SS or vacuum models)
Table 4Adjustable Range
Adjustable Range (PRESSURE)
Decreasing - psi (bar) Increasing - psi (bar) Approx.Deadband(Actuation Value) psi-(bar)
Adjustable Range (PRESSURE)
Min Min
Adjustable Range (PRESSURE)
2SS0.018 (.0) 0.068 (.0) .02 - .05 (.0 - .0)
Adjustable Range (PRESSURE)
3SS.03 (.00) .18 (.01) .07 - .15 (0 - .01)
Adjustable Range (PRESSURE)
18SS.4 (.03) 66 (.04) .12 - .26 (.01 - .02))
Adjustable Range (PRESSURE)
80SS.5 (.03) 3.9 (.3) 1.6 - 3.4 (.1 - .2)
Adjustable Range (PRESSURE)
150SS1.5 (.10) 7.5 (.5) 2.3 - 6.0 (.2 - .4)
Adjustable Range (VACUUM)
Decreasing - In. Hg Increasing - In. Hg Approx.Deadband(Actuation Value) In. Hg
Adjustable Range (VACUUM)
Min Min
Adjustable Range (VACUUM)
3SS0.06 0.34 .14 - .28
Adjustable Range (VACUUM)
18SS0.8 1.6 .4 - .8
Table 2Pressure Connection
-P21/2” NPT female pressure connection
Table 3Options
-FXNEMA 4X enclosure
-Z1Oxygen cleaned
-UUL Approved (Industrial Control)
-ULUL Approved
-CSCSA Approved Model
-WxxxExtra wire length (XXX = inches)
-SxxxFactory pre-set (consult factory)

• Pump & compressor monitoring
• Engine monitoring
• Machine tools
• Hydraulic power units
• Medical equipment 
• Waste management
• Food & beverage
• Factory automation
• Metal working



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