Features
nꢀ 3.3ꢀvoltꢀsupply
Applications
Industrial:ꢀ
nꢀ HVACꢀsystemsꢀ
nꢀ Processꢀmonitoringꢀ
nꢀ Packagingꢀautomation
**MedicalꢀDevicesꢀ(low/mediumꢀrisk):ꢀ
nꢀ Diagnosticꢀequipmentꢀ
nꢀ Analysisꢀequipment
2
nꢀ Compensatedꢀdigitalꢀoutputꢀ(I C)
nꢀ Ultra-lowꢀpressureꢀsensingꢀ(250ꢀPa)
nꢀ Gaugeꢀandꢀdifferentialꢀtypes
nꢀ Forꢀuseꢀinꢀclean,ꢀdryꢀairꢀandꢀnon-corrosiveꢀꢀ
ꢀ
gasꢀenvironments
nꢀ RoHSꢀcompliant*
BPS125 Series - 12 mm Digital Low Pressure Sensor
Electrical Characteristics
Supply Voltage (V ) ......................................................................................................................... 3.0 V minimum, 3.3 V typical, 3.6 V maximum
s
Supply Current @ 5 V ................................................................................................................1.2 mA minimum, 2 mA typical, 3.5 mA maximum
Performance Characteristics
Operating Temperature................................................................................................................................... -40 °C to +85 °C (-40 °F to +185 °F)
Storage Temperature....................................................................................................................................-55 °C to +100 °C (-67 °C to +212 °F)
Pressure Range.......................................................................................... 250 to 500 Pa, 0.15 to 1.0 PSI (1 ” H O to 2 ” H O, 1.03 to 6.89 kPa)
2
2
2
(1)
Output..................................................................................................................................................................................................Digital I C
Effective ADC Resolution ................................................................................................................................................................................13 bit
Accuracy @ 25 °C.................................................................................................................................................................................±0.25 % FS
Total Error Band over 0 °C to 60 °C (+32 °F to +140 °F)........................................................................................................................± 1.5 % FS
Long Term Stability.................................................................................................................................................................................± 0.5 % FS
Startup Time.................................................................................................................................................................................. 15 ms maximum
Digital Update Time............................................................................................................................................................................8.5 ms typical
Proof Pressure....................................................................................................................................................................... 5X full scale pressure
Burst Pressure................................................................................................................................................................................................ 10 psi
(1) 2
I C address is set to (0x28). Alternative addresses are available. Consult the factory for custom options.
Product Characteristics
Media Compatibility .........................................................................................................................................................Non-corrosive dry gasses
Moisture Sensitivity Level.......................................................................................................................................................................................1
ESD Classification (HBM)..................................................................................................................................................................................2 kV
Marking..................................................................................Partial model number, media compatibility, pressure type, pressure rating, lot code
Standard Packaging............................................................................................................................................................... 250 pcs./13-inch reel
Weight .................................................................................................................................................................................1.307 grams (0.046 oz)
Basic Circuit Schematic
Transfer Function Formula
P
– 0.1 • Max
1
counts
P
= (P
– P
max
) •
min
+ P
min
psi
)
(
0.8 • Max
V
s
Where
P
P
P
P
= Measured Pressure in PSI
= Pressure Counts
psi
counts
min
SCL
SDA
8
7
DIGITAL
OUT
= Minimum Pressure
= Maximum Pressure
= 16384 = 14 Bits
max
SSC
Max
Consult factory for custom options such as supply voltage,
temperature calibration range, output range accuracy
specification, and update rate.
GND
4
Note: Power supply decoupling included.
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
*ꢀꢀꢀꢀꢀRoHS3ꢀDirectiveꢀ2015/863ꢀAmendmentsꢀofꢀAnnexꢀIIꢀonꢀMarchꢀ31,ꢀ2015
**ꢀꢀꢀBourns®ꢀproductsꢀhaveꢀnotꢀbeenꢀdesignedꢀforꢀandꢀareꢀnotꢀintendedꢀforꢀuseꢀinꢀ“lifesaving,”ꢀ“life-critical”ꢀorꢀ“life-sustaining”ꢀapplicationsꢀnorꢀanyꢀotherꢀapplicationsꢀꢀ
ꢀ
ꢀ
whereꢀfailureꢀorꢀmalfunctionꢀofꢀtheꢀBourns®ꢀproductꢀmayꢀresultꢀinꢀpersonalꢀinjuryꢀorꢀdeath.ꢀSeeꢀLegalꢀDisclaimerꢀNoticeꢀonꢀtheꢀlastꢀpageꢀofꢀthisꢀdocument,ꢀandꢀatꢀꢀ
www.bourns.com/docs/legal/disclaimer.pdf.
Specificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.
Usersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀspecificꢀapplications.ꢀ
Theꢀproductsꢀdescribedꢀhereinꢀandꢀthisꢀdocumentꢀareꢀsubjectꢀtoꢀspecificꢀlegalꢀdisclaimersꢀasꢀsetꢀforthꢀonꢀtheꢀlastꢀpageꢀofꢀthisꢀdocument,ꢀandꢀatꢀwww.bourns.com/docs/legal/disclaimer.pdf.
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