1-34 TO-8 – Standard
Model 33 Medium Pressure
PC Board Mountable Pressure Sensor
0-100 mV Output
Differential Pressure
Temperature Compensated
Medical Instrumentation
HVAC
Process Control
Vacuum Measurement
Air Flow Management
FEATURES
TO-8 Package
±0.1% Non-linearity
±0.5% Temperature Performance
1.0% Interchangeable Span
(provided by gain set resistor)
Solid State Reliability
Low Power
STANDARD RANGES
Range psid
0 to 2 ●
0 to 5 ●
0 to 10 ●
0 to 15 ●
0 to 30 ●
0 to 50 ●
0 to 100 ●
0 to 250 ●
DESCRIPTION
The Model 33 is a temperature compensated, piezoresistive
silicon pressure sensor packaged in TO-8 configurations. It
provi des excellent performance and long-term stability.
Differential pressure ranges from 0-2 PSI to 0-250 PSI are
avai l able. Integr al temperature compen sation is pro v ided over a
range of 0-50°C usi ng laser-trimmed re sistor s . An additional
laser -trimmed resistor is included to normalize pressure
sensitivity variations by programm ing the gain of an external
differential amplifier. This provides sensitivity interchangeability
of ±1%.
Please refer to the low pressure section for information on
products with operating pressures less than 0-2 PSI. An
uncompensated sensor (Model 30) is also availa ble. F or sensors
in a dual-in-li ne package pleas e refer to the Models 1210 and
1220. Please contact the factor y for additional information.
DIMENSIONS
PC Board Mountable Pressure Sensor Model 33 Medium Pressure
TO-8 – Standard
June 2001
PERFORMANCE SPECIFICATIONS
Supply Current: 1.5mA
Ambient Temperature: 25°C (Unless otherwise specified)
Notes
1. Best Fit Straight Line. For 2 psi output span is 30-60 mV and TC zero
temperature error is ±1.25%.
2. Temperature range 0-50°C in reference to 25°C.
3. Guarantees input/output ratiometricity.
4. For a zero-to-full scale pressure step change.
5. 10 Hz to 1kHz.
6. Between case and sensing element.
7. For top side application, 3X not to exceed 500 psi on ranges: 0-10 psi
to 0-250 psi, 20 psi for 2 psi and 5 psi versions.
8. For top entry versions, wetted materials are silicon, aluminum, gold,
RTV, glass, and nickel. For bottom entry versions, wetted materials are
silicon, RTV, gold, and glass.
9. For backside application, 3X not to exceed 100 psi on all ranges.
CONNECTIONS
ORDERING INFORMATION
APPLICATION SCHEMATIC
PARAMETERS MIN TYP MAX UNITS NOTES
Full Scale Output Span 75 100 150 mV
Full Scale Output Span (2 psi version) 30 60 mV
Zero Pressure Output 2±mV
Pressure Non-linearity 0.05 0.10 ±% Span 1
Pressure Hysteresis 0.01 0.05 ±% Span
Input & Output Resistance 2500 4400 6000 Ω
Temperature Error – Span 0.3 0.5 ±% Span 2
Temperature Error – Zero 0.1 0.5 ±% Span 1, 2
Thermal Hysteresis – Span 0.1 ±% Span 2
Thermal Hysteresis – Zero 0.1 ±% Span 2
Supply Current 1.5 2.0 mA 3
Response Time 1.0 msec 4
Output Noise 1.0 µV p-p 5
Output Load Resistance 2 MΩ
Insulation Resistance (50 VDC) 50 MΩ6
Pressure Overload 3X Rated 7, 9
Operating Temperature –40°C to +125°C
Storage Temperature –50°C to +150°C
Acceleration 50g Max
Shock 1000g Peak for 0.5 mS
Vibration 20g Peak at 10 to 2000 Hz
Media Non-Corrosive Gases 8
Weight 3 Grams
33A - 015 D
Type (D = Differential)
Model
RangePressure
LEADER Electronic Co., Ltd - 116, Jianghuali, Jianghua Road, Jiangmen City, GD, PRC
Tel: + 86 750 3101711, 3379183 Fax: + 86 750 3388669 Website: www.leadersensors.com - e-mail: leader@leadersensors.com
