SDX100A4 [SENSORTECHNICS]
Low cost compensated pressure sensors in DIP package; 在DIP封装的低成本补偿压力传感器
| 型号： | SDX100A4 |
| 厂家： | 
SENSORTECHNICS GMBH |
| 描述： | Low cost compensated pressure sensors in DIP package |
| 文件： | 总4页 (文件大小：94K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SDX Series
Low cost compensated pressure sensors in DIP package
FEATURES
GENERAL DESCRIPTION
·
·
·
0...1 to 0...100 psi
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 accu-
rate and stable output over a 0 to 50°C
temperature range. This series is
intended for use with non-corrosive,
non-ionic working fluids such as air
and dry gases.
Low cost DIP package
Temperature
compensation
·
·
·
·
Calibrated zero and span
Small size
Devices are available to measure
absolute, 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.
Low noise
Scale:
1 cm
½ inch
High impedance for
low power applications
also provides convenient mounting
and pressure ports for ease of use
with standard plastic tubing for
pressure connection.
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.
APPLICATIONS
·
·
·
·
Medical equipment
All SDX devices are calibrated for span
to within 3.5 % and provide an offset
(zero pressure output) of ±1 mV max.
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 SDX-A
series datasheet.
Computer peripherals
Pneumatic controls
HVAC
The SDX devices feature an integrated
circuit sensor element and laser
trimmed thick film ceramic housed in
a compact solvent resistant case. This
package provides excellent corrosion
resistance and isolation to external
package stresses. The DIP package
EQUIVALENT CIRCUIT
ELECTRICAL CONNECTION
TOP VIEWS
Pin 1 identified by
chamfered corner
Pin 1 identified by
chamfered corner
Vs
out -
GND
out +
out +
1
1
1
out +
P2
P1
P1
+Vs
GND
out -
+Vs
+Vs
GND
out -
P2
4
4
4
Vent hole
SDX...G2
SDX...A2
SDX...D4
+
-
Note: The polarity identicated is
1
out -
GND
out +
for pressure applied to
P1
+Vs
4
SDX...G2: P2 (backward gage)
SDX...A2: P1 (forward gage)
SDX...D4: P2 (backward gage)
SDX...A4: P1 (forward gage)
SDX...A4
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SDX Series
Low cost compensated pressure sensors in DIP package
PRESSURE SENSOR CHARACTERISTICS (all devices)
Maximum ratings
Environmental specifications
Supply voltage VS
+20 VDC
150 psig
250°C
Temperature ranges
Compensated
Operating
0 to 50°C
-40 to +85°C
-55 to +125°C
0 to 100% RH
Maxium pressure on any port
Lead temperature (soldering 4 sec.)
Storage
Humidity limits
STANDARD PRESSURE RANGES
Part number
Operating pressure
Proof pressure11
Full-scale span1,2
Min.
Typ.
Max.
SDX01...
SDX05...
SDX15A...
SDX15G2, ...D4
SDX30A...
SDX30G2, ...D4
SDX100A...
SDX100G2, ...D4
0 - 1 psig/d
0 - 5 psig/d
0 - 15 psia
0 - 15 psig/d
0 - 30 psia
0 - 30 psig/d
0 - 100 psia
0 - 100 psig/d
20 psi
20 psi
30 psi
30 psi
60 psi
60 psi
150 psi
150 psi
17.37 mV
57.9 mV
86.85 mV
86.85 mV
86.85 mV
86.85 mV
96.5 mV
96.5 mV
18 mV
60 mV
90 mV
90 mV
90 mV
90 mV
100 mV
100 mV
18.63 mV
62.1 mV
93.15 mV
93.15 mV
93.15 mV
93.15 mV
103.5 mV
103.5 mV
* Maximum pressure above which causes permanent sensor failure.
COMMON PERFORMANCE CHARACTERISTICS1
Characteristic
Min.
Typ.
Max.
Unit
Zero pressure offset
-1.0
---
---
---
---
0
+1.0
±1.0
±2.0
±1.0
±0.5
---
---
5.0
---
mV
%FSO
%FSO
mV
%FSO
kΩ
kΩ
VDC
µsec
mV
Combined linearity and hysteresis3
Temperature effect on span (0 to 50°C)4
Temperature effect on offset (0 to 50°C)4
Repeatability5
±0.2
±0.4
±0.2
±0.2
4.0
4.0
3.0
100
±0.1
Input impedance6
---
Output impedance7
---
1.3
---
---
Common-mode voltage8
Response time9
Long term stability of offset and span10
---
Specification notes:
Reference conditions: supply voltage, VS = 12 VDC, TA = 25°C, common-mode line pressure = 0 psig, pressure applied to port 2.
For absolute devices only, pressure is applied to port 1 and the output polarity is reversed.
Span is the algebraic difference between the output voltage at full-scale pressure and the output at zero pressure. Span is
ratiometric to the supply voltage.
See Definition of Terms. Hysteresis - the maximum output difference at any point within the operating pressure range for
increasing and decreasing pressure.
1.
2.
3.
Maximum error band of the offset voltage and the error band of the span, relative to the 25°C reading.
Maximum difference in output at any pressure with the operating pressure range and temperature within 0 to +50°C after:
a) 100 temperature cycles, 0 to + 50°C
4.
5.
b) 1.0 million pressure cycles, 0 psi to full-scale span
Input impedance is the impedance between pins 2 and 5.
Output impedance is the impedance between pins 1 and 3.
6.
7.
This is the common-mode voltage of the output arms (pins 1 and 3) for VS = 12 VDC
.
8.
Response time for a 0 psi to full-scale span pressure step change, 10 to 90 % rise time.
Long term stability over a one year period.
Maximum pressure at any port is the maximum operating plus common-mode pressure which can be applied. The proof
pressure for the forward gage of all devices in the D4-package is the specified value or 100 psi, whatever is less.
9.
10.
11.
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SDX Series
Low cost compensated pressure sensors in DIP package
PHYSICAL DIMENSIONS
SDX...G2, ...A2
0.470
(11.94)
0.550
(13.97)
0.105
(2.67)
0.315
(8.00) typ.
0.280
(7.11) typ.
0.190
(4.83) typ.
compensation
circuit
0.020
(0.51) typ.
0.110
(2.79) typ.
0.600
(15.24) typ.
0.01
(0.25)
0.100
(2.54) typ.
mass: 2 g
dimensions in inches (mm)
SDX...D4, ...A4
1
P1
0.470
(11.94)
4
P2
version SDX...A4
without port P2
0.550
(13.97)
Ø 0.090
(2.29) typ.
0.300
(7.62)
0.135
(3.43)
0.250
(6.35)
0.430
(10.92) typ.
0.335
(8.50) typ.
compensation
circuit
0.120
(3.05) typ.
0.020
(0.51) typ.
0.110
(2.79) typ.
0.600
(15.24) typ.
0.010
(0.25) typ.
0.100
(2.54) typ.
mass: 2 g
dimensions in inches (mm)
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SDX Series
Low cost compensated pressure sensors in DIP package
GENERAL DISCUSSION
USER CALIBRATION
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.
The SDX devices are fully calibrated for offset and span and
should therefore require little user adjustment in most appli-
cations. 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.
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.
MEDIACOMPATIBILITY
The small tubing has several advantages over larger tubing
commonly used with pressure sensors:
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 compati-
bility, contact the factory.
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.
MECHANICALAND MOUNTING CONSIDERATIONS
The DIP housing is designed for convenient pressure
connection and easy PC board mounting. For pressure attach-
ment tygon and silicon tubing is recommended.
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.
APPLICATION INFORMATION
The application information for the SCX series is also appli-
cable to the SDX series.
ORDERING INFORMATION
Operating
Order number
Gage/differential
Gage devices
pressure
Absolute devices
devices
0 - 1 psi
0 - 5 psi
SDX01G2
SDX05G2
SDX15G2
SDX30G2
SDX100G2
SDX01D4
SDX05D4
SDX15D4
SDX30D4
SDX100D4
0 - 15 psi
0 - 30 psi
0 - 100 psi
SDX15A2
SDX15A4
SDX30A4
SDX100A4
SDX30A2
SDX100A2
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.
June 2008 / 062
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