23 and 33 1psi
23 33
PC Board Mountable Pressure Sensor
0-100 mV Output
Current Excitation
Gage and Differential
Temperature Compensated
DESCRIPTION
The 23 and 33 are temperature compensated, piezoresistive silicon pressure sensors packaged in a
TO-8 configuration. It provides excellent performance and long-term stability.
Integral temperature compensation is provided over a range of 0-50°C using laser-trimmed resistors. An
additional laser-trimmed resistor is included to normalize pressure sensitivity variations by programming the gain
of an external differential amplifier. This provides sensitivity interchangeability of ±1%.
Please refer to the 23 and 33 standard datasheets for information on products with operating pressures
greater than 1 psi.
FEATURES APPLICATIONS
TO-8 Package Medical Instruments
0ºC to 50ºC Compensated
Temperature Range
Process Control
Factory Automation
±0.3% Non Linearity Leak Detection
1.0% Interchangeable Span
(provided by gain set resistor)
Airspeed Measurement
Level Detection
Solid State Reliability
STANDARD RANGES
23 33
Range psig psid
0 to 1
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23 and 33 1psi
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PERFORMANCE SPECIFICATIONS
Supply Current: 1.5mA
Ambient Temperature: 25°C (un less otherwise specified)
PRESSURE RANGE 0 – 1 psi
PARAMETERS MIN TYP MAX UNITS NOTES
Span 65 100 150 mV 1
Zero Pressure Output -2 2 mV
Pressure Non Linearity -0.3 ±0.2 0.3 %Span 2
Pressure Hysteresis -0.05 ±0.01 0.05 %Span
Input & Output Resistance 2500 4400 6000 Ω
Temperature Error – Span -1.0 ±0.5 1.0 %Span 3
Temperature Error – Zero -1.0 ±0.5 1.0 %Span 3
Thermal Hysteresis – Zero ±0.1 %Span 3
Supply Current 1.5 2.0 mA
Response Time (10% to 90%) 1.0 mS 4
Output Noise (10Hz to 1kHz) 1.0 µV p-p
Insulation Resistance (50 Vdc) 50 M Ω 5
Long Term Stability (Offset & Span) ±0.2 %Span 6
Pressure Overload 10 psi
Compensated Temperature 0 50 °C
Operating Temperature -40 +125 °C
Storage Temperature -50 +150 °C
Weight 3 grams
Solder Temperature 250ºC Max 5 Sec.
Media Non-Corrosive Dry Gases Compatible with Silicon, Pyrex,
RTV, Gold, Nickel, and Aluminum
Notes
1. Ratiometric to supply current.
2. Best fit straight line.
3. Maximum temperature error between 0°C and 50°C with respect to 25°C.
4. For a zero-to-full scale pressure step change.
5. Minimum distance between case and pins.
6. Long term stability over a one year period with constant current and temperature.
23 and 33 1psi
DIMENSIONS
CONNECTIONS
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23 and 33 1psi
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APPLICATION SCHEMATIC
ORDERING INFORMATION
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Model
Pressure Range
Type (G = Gage)
23A - 001 G
Model
Pressure Range
Type (G = Gage)
33A - 001 G
NORTH AMERICA EUROPE ASIA
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Sales: pfg.cs.amer@meas-spec.com
Measurement Specialties
(Europe), Ltd.
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Tel: +33 (0) 130 79 33 00
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(China), Ltd.
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Nanshan District, Shenzhen 518057
China
Tel: +86 755 3330 5088
Fax: +86 755 3330 5099
Sales: pfg.cs.asia@meas-spec.com
The information in this sheet has been carefully reviewed and is believed to be accurate; however, no responsibility is assumed for
inaccuracies. Furthermore, this information does not convey to the purchaser of such devices any license under the patent rights to the
manufacturer. Measurement Specialties, Inc. reserves the right to make changes without further notice to any product herein. Measurement
Specialties, Inc. makes no warranty, representation or guarantee regarding the suitability of its product for any particular purpose, nor does
Measurement Specialties, Inc. assume any liability arising out of the application or use of any product or circuit and specifically disclaims
any and all liability, including without limitation consequential or incidental damages. Typical parameters can and do vary in different
applications. All operating parameters must be validated for each customer application by customer’s technical experts. Measurement
Specialties, Inc. does not convey any license under its patent rights nor the rights of others.
