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All Sensors DS-0032 Rev A
0.80
(20.3)
0.85
(21.6)
1.10
(27.9)
0.10 Typical
(2.54)
A
B
1
Pin 1234
0.66
(16.0)
0.21
(5.3)
0.42
(10.5)
0.48
(12.2) 0.55
(14.0)
0.17 4 t o 0. 19 0
(4.4 to 4.8)
1.08
(27.4)
0.25
(6.4) Pin Size
0.010 x 0.020
(0.25 x 0.50 )
NOTES:
1) Dimensions in inches (millimeters)
pin 1: Vsupply
pin 2: Common
pin 3: V output
pin 4: do not connect
T he Amplified line of low pressure sensors is based upon a proprietary technology to reduce all output offset or common mode errors. This
model provides a ratiometric 4-volt output with superior output offset characteristics. Output offset errors due to change in temperature,
stability to warm-up, stability to long time period, and position sensitivity are all significantly reduced when compared to conventional
compensation methods. In addition the sensor utilizes a silicon, micromachined, stress concentration enhanced structure to provide a very
linear output to measured pressure.
These calibrated and temperature compensated sensors give an accurate and stable output over a wide temperature range. This series is
intended for use with non-corrosive, non-ionic working fluids such as air , dry gases and the like.
The output of the device is ratiometric to the supply voltage over a supply voltage range of 4.5 to 5.5 volts.
AMPLIFIED Pressure Sensors
• 0.25 and 0.50 In H2O Pressure Ranges
• Ratiometric 4V Output
• Temperature Compensated
• Calibrated Zero and Span
Physical Dimensions
• Medical Breathing
• HVAC
General Description (generic product)
Applications
Features
A mplified Very Low Pressure Sensors
Equivalent Circuit
A mplified Very Low Pressure Sensors
Specification Notes
NOTE 1: ALL PARAMETERS ARE MEASURED AT 5.0 VOLT EXCITATION, FOR THE NOMINAL FULL SCALE PRESSURE AND ROOM TEMPERATURE UNLESS OTHERWISE SPECIFIED. PRESSURE
MEASUREMENTS ARE WITH POSITIVE PRESSURE APPLIED TO PORT B.
NOTE 2: SHIFT IS RELATIVE TO 25°C.
NOTE 3: SHIFT IS WITHIN THE FIRST HOUR OF EXCITATION APPLIED TO THE DEVICE.
NOTE 4: MEASURED AT ONE-HALF FULL SCALE RATED PRESSURE USING BEST STRAIGHT LINE CURVE FIT.
NOTE 5: THE VOLTAGE ADDED TO THE OFFSET VOLTAGE AT FULL SCALE PRESSURE. NOMINALLY THE OUTPUT VOLTAGE RANGE IS 0.25 TO 4.25 VOLTS FOR MINUS TO PLUS FULL SCALE
PRESSURE.
All Sensors reserves the right to make changes to any products herein. All Sensors 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.
Parameter, NOTE 1
Operating Range, differential pressure
Output Span, NOTE 5
Offset Voltage @ zero differential pressure
Offset Temperature Shift (5°C-50°C), NOTE 2
Offset W arm-up Shift, NOTE 3
Offset Position Sensitivity (±1g)
Offset Long Term Drift (one year)
Linearity, hysteresis error, NOTE 4
Span Shift (5°C-50°C), NOTE 2
Minimum
±1.80
2.00
Nominal
±0.25
±2.0
2.25
±20
±40
±20
0.05
Maximum
±2.20
2.50
±50
±50
±100
±50
0.25
±4
Units
“H2O
volt
volt
mvolt
mvolt
mvolt
mvolt
%fs
%span
Parameter, NOTE 1
Operating Range, gage pressure
Output Span, NOTE 5
Offset V oltage @ zero gage pressure
Offset T emperature Shift (5°C-50°C), NOTE 2
Offset Warm-up Shift, NOTE 3
Offset Position Sensitivity (±1g)
Offset Long T erm Drift (one year)
Linearity , h ysteresis error , NOTE 4
Span Shift (5°C-50°C), NOTE 2
Minimum
3.80
0.10
Nominal
0.5
4.0
0.25
±20
±40
±20
0.05
Maximum
4.20
0.40
±50
±50
±100
±50
0.25
±4
Units
“H2O
volt
volt
mvolt
mvolt
mvolt
mvolt
%fs
%span
Supply Voltage, Vs
Common-mode pressure
Lead Temperature, max (soldering 2-4 sec.)
+4.5 to +5.5 Vdc
-10 to +10 psig
250°C
Pressure Sensor Ratings
Temperature Ranges
Compensated
Operating
Storage
Humidity Limits
5 to 50° C
-25 to 85° C
-40 to 125° C
0 to 95% RH
(non condensing)
Environmental Specifications
Performance Characteristics for: 0.25 INCH-D-4V
Performance Characteristics for: 0.5 INCH-G-4V
