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| BSW Series Solid state pressure switch with analog output FEATURES * 0...70 mbar to 0...10 bar * Differential, gage and absolute pressure options * Adjustable threshold point * Adjustable hysteresis * 1 - 5 V analog output * Low side and high side switching output * LED status indicator * Long term stability 0.1 % / year SERVICE Pressure inlet: Non-corrosive, non-ionic pressure media, such as dry air and dry gases. Scale: 1 cm 1 inch SPECIFICATIONS Maximum ratings Supply voltage Output current Analog output Switching output 1 (pnp) Switching output 2 (npn) Temperature limits Storage Operating Compensated Proof pressure1 BSWM... BSW001... to BSW005... BSW010... 11 to 30 V ELECTRICAL BLOCK DIAGRAM 1 +Vs LOAD 20 mA 100 mA 300 mA -55 to 100C -40 to 85C 0 to 70C 1.4 bar 2 x rated press. 1.5 x rated press. V Reg. 8V LED Pressure Analog 2 out 5 Switch 2 out Switch 1 4 out V 3 Threshold set Hysteresis set LOAD -Vs GND March 2001 / 016 1/4 www.sensortechnics.com BSW Series Solid state pressure switch with analog output PERFORMANCE CHARACTERISTICS (unless otherwise noted VS = 15 V, tamb = 25C) Characteristics Operating pressure (differential/gage)2 BSWM070D... BSWM350D... BSW001D... BSW002D... BSW005D... BSW010D... BSW001A... BSW002A... BSW005A... Min. 0 0 0 0 0 0 0 0 0 Typ. Max. 70 350 1 2 5 10 1 2 5 Unit mbar bar Operating pressure (absolute)3 ANALOG OUTPUT Zero pressure offset Full scale output Full scale span4 Non-linearity and hysteresis (BSL)5 Thermal effects (0 - 70C)6 Combined offset and span BSWM070D... BSWM350D... all others Long term stability7 0.8 4.8 1.0 5.0 4.0 0.2 0.04 0.03 0.02 0.1 1.2 5.2 1.0 0.20 0.15 0.10 V %FSO %FSO/C %FSO SWITCHING OUTPUT Switching output 1 Switching output 2 Output voltage (high) Switching output 1 Output voltage (low) Switching output 2 Status indication Threshold point setting8 Hysteresis setting8 Switching frequency Switch point repeatability 7 20 1 pnp, open collector, load switched to ground npn, open collector, load switched to +Vs 7.5 V 0.5 1.2 red LED 100 % 10 1 kHz 0.2 %FSO Specification notes: 1. 2. 3. 4. 5. 6. 7. 8. Proof pressure is the maximum pressure which may be applied without causing damage to the sensing element. The output signal of all BSW...D-PCB is proportional to the pressure applied to port P2, relative to port P1, e.g. the output signal increases when vacuum is applied to port P1 relative to port P2. The output signal of all BSW...A-PCB is proportional to the absolute pressure applied to port P1. Span is the algebraic difference between the output at full scale pressure and offset. Non-linearity refers to the Best Straight Line fit measured for offset, full scale and 1/2 full scale pressure. Temperature shift tested and guaranteed at 70C relative to 25C. All specs are shown relative to 25C. Difference in output/switch point at any pressure within the operating pressure range and temperature within 0 - 70C after: a) 1000 temperature cycles, 0 - 70C b) 1 million pressure cycles 0 bar to full scale pressure switching Hysteresis setting has a direct influence on the switching points output when the pressure increases or decreases. The switching points can be calculated as follows: Output going active (LED on) when pressure exceeds SET POINT + hysteresis/2 Output going inactive (LED off) when pressure falls below SET POINT - hysteresis/2 pressure setpoint 1/2 1/2 hyst. hyst. 2/4 March 2001 / 016 www.sensortechnics.com BSW Series Solid state pressure switch with analog output PHYSICAL DIMENSIONS BSW...V-PCB 2 x 3.5 diam. 10.3 3.1 6.7 P1 46.9 P2 Switchpoint adjustment Hysteresis adjustment 1.6 18.0 dimensions in mm 19.8 13.5 2 x 4.8 diam. 59.7 52.3 53.3 4 x 2.54 1 2 3 4 5 12.7 39.3 LED 30.0 44.0 mass: 18 g LED BSW...H-PCB 6.3 6.7 19.8 7.8 P2 39.3 2 x 3.5 diam. 46.9 P1 59.7 52.3 53.3 4 x 2.54 Switching adjustment Hysteresis adjustment 1 2 3 4 5 12.7 LED 30.0 1.6 33.5 mass: 21 g dimensions in mm Pin connection Pin 1 2 3 4 5 Connection +Vs Vout (analog) -Vs (GND) Switch 1 (out) Switch 2 (out) March 2001 / 016 22.8 3/4 www.sensortechnics.com 22.8 BSW Series Solid state pressure switch with analog output HYSTERESIS AND SWITCH POINT SETTING Function Hysteresis Switching point Change per scale unit 0.9 %FS 7.3 %FS ORDERING INFORMATION Part number Package version Pressure range Differential/Gage devices 0 - 70 mbar 0 - 350 mbar 0 - 1 bar 0 - 2 bar 0 - 5 bar 0 - 10 bar Absolute devices 0 - 1 bar 0 - 2 bar 0 - 5 bar Side facing ports BSWM070DV-PCB BSWM350DV-PCB BSW001DV-PCB BSW002DV-PCB BSW005DV-PCB BSW010DV-PCB BSW001AV-PCB BSW002AV-PCB BSW005AV-PCB Top facing ports BSWM070DH-PCB BSWM350DH-PCB BSW001DH-PCB BSW002DH-PCB BSW005DH-PCB BSW010DH-PCB BSW001AH-PCB BSW002AH-PCB BSW005AH-PCB Sensortechnics reserves the right to make changes to any products herein. Sensortechnics does not assume any liability arising out of the application or use of any product or circuit described herein, neither does it convey any license under its patent rights nor the rights of others. 4/4 March 2001 / 016 www.sensortechnics.com |
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