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기능 Pressure Sensor
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SDXxxxD4 데이터시트, 핀배열, 회로
SDX SERIES
Lowwww.DataSheet4U.com Cost Compensated Pressure Sensors in DIP Package
FEATURES
· 0 to 1 psi to 0 to 100 psi
· Low Cost DIP Package
· Temperature Compensation
· Calibrated Zero and Span
· Small Size
· Low Noise
· High Impedance for
Low Power Applications
APPLICATIONS
· Medical Equipment
· Computer Peripherals
· Pneumatic Controls
· HVAC
GENERAL
DESCRIPTION
The SDX series sensors will provide a
very cost effective solution for pressure
applications that require small size plus
performance. These internally calibrated
and temperature compensated sensors
give an accurate and stable output over a
0°C to 50°C temperature range. This series
is intended for use with non-corrosive, non-
ionic working fluids such as air and dry
gases.
Devices are available to measure abso-
lute, differential and gage pressures from
1 psi (SDX01) up to 100 psi (SDX100). The
Absolute (A) devices have an internal
vacuum reference and an output voltage
proportional to absolute pressure.
The output of the bridge is ratiometric to
the supply voltage and operation from any
D.C. supply voltage up to +20 V is
acceptable.
The SDX devices feature an integrated
circuit sensor element and laser trimmed
thick film ceramic housed in a compact sol-
vent resistant case. This package provides
excellent corrosion resistance andisolation
to external package stresses. The DIP
package also provides convenient mounting
and pressure ports for ease of use with
Scale:
1 cm
½ inch
standard plastic tubing for pressure
connection.
All SDX devices are calibrated for span
to within 3.5% and provide an offset (zero
pressure output) of ±1 millivolt maximum.
These parts were designed for low cost
applications where the user can typically
provide fine-adjustment of zero and span
in external circuitry. For higher accuracies,
refer to the standard SCX series datasheet.
EQUIVALENT CIRCUIT
ELECTRICAL CONNECTION
Note:
SDXxxxG2
SDXxxxA2
Top View
The polarity identicated is for pressure applied to
SDXxxxG2:
P2 (backward gage)
SDXxxxA2:
P1 (forward gage)
SDXxxxD4:
P2 (backward gage)
SDXxxxD4
March 1998/062
Aubinger Weg 27, 82178 Puchheim, Germany
Phone 0049 - (0) 89 80 08 30, Fax 0049 - (0) 89 8 00 83 33
http://www.sensortechnics.com




SDXxxxD4 pdf, 반도체, 판매, 대치품
SDX SERIES
Lwwoww.DataCShoeest4tU.cComompensated Pressure Sensors in DIP Package
GENERAL DISCUSSION
The SDX Series devices give a voltage output which is directly
proportional to applied pressure. The gage devices will give an
increasing positive going output when increasing pressure is applied
to the pressure port. The absolute device will give a decreasing
output when increasing pressure is applied to the port. The devices
are ratiometric to the supply voltage and changes in the supply
voltage will cause proportional changes in the offset voltage and
full-scale span.
PNEUMATIC INTERFACE
The DIP also provides convenient mounting and pressure ports
for ease of use with standard 1/16" ID, 1/8" OD, 1/32" wall, flexible
plastic tubing for pressure connection.
The small tubing has several advantages over larger tubing
commonly used with pressure sensors:
1) The tubing can be formed in a much smaller radius
without kinking.
2) The tubing is easier to handle
3) The tubing is available in a variety of colors such as clear,
white, yellow, blue, green, etc. to enable color coding of
pneumatic circuits with multiple pressure sensors in the same
way that wiring harnesses are color coded in electrical circuits.
This greatly simplifies troubleshooting.
4) Less stress is placed on the pressure sensor package resulting
in less potential for offset shift.
5) Less physical space is required for the small tubing
6) The lower volume of air in the small tubing results in faster
pressure sensor response.
USER CALIBRATION
The SDX devices are fully calibrated for offset and span and
should therefore require little user adjustment in most applications.
For more precise span and offset adjustments, contact the factory.
VACUUM REFERENCE
(Absolute Devices)
Absolute sensors have a hermetically sealed vacuum reference
chamber. The offset voltage on these units is therefore measured
at vacuum, 0 psia. Since all pressure is measured relative to a
vacuum reference, all changes in barometric pressure or changes
in altitude will cause changes in the device output.
MEDIA COMPATIBILITY
SDX devices are compatible with most non-corrosive gases.
Because the circuitry is coated with a protective silicon gel, many
otherwise corrosive environments can be compatible with the
sensors. Fluids must generally be compatible with silicon gel, plastic,
RTV, silicon, and glass for use with the gage devices (only). For
questions concerning media compatibility, contact the factory.
MECHANICAL AND MOUNTING CONSIDERATIONS
The DIP housing is designed for convenient pressure connection
and easy PC board mounting. For pressure attachment, tygon and
silicon tubing is recommended.
APPLICATION INFORMATION
The Application Information for the SCX Series is also applicable
to the SDX Serieseries.
ORDERING INFORMATION
Operating Pressure
0 - 1 psi
0 - 5 psi
0 - 15 psi
0 - 30 psi
0 - 100 psi
absolute devices
---
---
SDX15A2
SDX30A2
SDX100A2
Part Number
gage devices
SDX01G2
SDX05G2
SDX15G2
SDX30G2
SDX100G2
gage/differential devices
SDX01D4
SDX05D4
SDX15D4
SDX30D4
SDX100D4
SenSym and Sensortechnics reserve the right to make changes to any products herein. SenSym and Sensortechnics do 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.
March 1998/062
Aubinger Weg 27, 82178 Puchheim, Germany
Phone 0049 - (0) 89 80 08 30, Fax 0049 - (0) 89 8 00 83 33
http://www.sensortechnics.com

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Pressure Sensor

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