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Barksdale D1T, D2T Series Terminal Block Diaphragm Switch

Terminal Block Diaphragm Switch
D1T, D2T Series

• High reliability
• High accuracy
• NEMA 4
• Ideal for pressure and vacuum applications
• Single and dual switching capability
• Tamper-proof external adjustment

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

Table 1Table 2Table 3Table 4Table 5Table 6
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Table 1H
HHermetically sealed limit switch option - Class I, Division II (requires AA, CC, GH or HH limit switch
Table 2Base Configuration
D1TSingle setpoint housed with terminal block
D2TDual setpoint housed with terminal block
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 -U or -UL approved)
-M10 amps @ 125/250 VAC; 3 amps @ 480 VAC; 0.5 amps @ 125 VDC; 0.25 amps @ 250 VDC (not -U or -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 (.02) .07 - .15 (.0 - .01)
Adjustable Range (PRESSURE)
18SS.4 (.03) .66 (.05) .12 - .26 (.01 - .02)
Adjustable Range (PRESSURE)
80SS.5 (.03) 3.9 (.3) 1.6 - 3.4 (.1 - .2)
Adjustable Range (PRESSURE)
150SS1.5 (.1) 7.5 (.5) 2.3 - 6 (.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
-UUL Approved
-ULUL Approved Model
-CSCSA Approved Model
-Z1Oxygen cleaned
-FXNEMA 4X enclosure
-TCTemperature stabilization and pre-cycle 6-Pin Terminal Block (for
-L6D2T models only. Non-UL listed)
-SxxxFactory pre-set (consult factory)
Machine tools
Pneumatics
Medical
Marine & shipbuilding
Pump & compressor monitoring

• Machine tools
• Pneumatics
• Medical
• Marine & shipbuilding
• Pump & compressor monitoring
• Oil & gas
• Water equipment
• Mining
• Lubrication equipment 



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