SXL010D
Low pressure sensors
FEATURES
· 0...10 "H
2
O
· Accurate low pressure
readings
· Low cost
· High impedance bridge
· Low noise
· Low power consumption
for battery operation
GENERAL DESCRIPTION
The SXL010D pressure sensor
provides lowest cost components for
measuring very low pressures. These
devices were specifically designed to
accurately measure differential and
gage pressures of 0 to 10 "H
2
O. They
are compatible for use with non-corro-
sive and non-ionic media, such as air
and dry gases.
These differential devices allow appli-
cation of pressure to either side of the
diaphragm and can be used for gage
or differential pressure measurements.
Scale:
1 cm
½ inch
APPLICATIONS
· Medical instrumentation
· Portable and battery
powered equipment
· Air flow monitoring
· HVAC
· Industrial controls
ABSOLUTE MAXIMUM RATINGS
Supply voltage(V)
Temperature range
Operating
Storage
Proof-mode pressure
9
Common mode pressure
Lead temperature (soldering 4 sec.)
12 V
DC
-40 to +85°C
-55 to +125°C
7 psi
50 psi
250°
EQUIVALENT CIRCUIT
+Vs +Vs
6
4
ELECTRICAL CONNECTION
out+
GND
1
P1
P2
4
+Vs
1
+out
3
-out
out -
+Vs
differential/gage
2 GND
DIP PACKAGE
Note:
Polarity applies for positive
pressure applied to port P2
(backward gage)
P1: forward gage
P2: backward gage
July 2005 / 552
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SXL010D
Low pressure sensors
PERFORMANCE CHARACTERISTICS
1
Characteristics
Operating pressure
Sensitivity T
A
=25°C
Full-scale span 10 "H
2
O
2
Temperature coefficient of span
5,8
Zero pressure offset T
A
=25°C
Temperature coefficient of offset
5
Combined linearity and hysteresis
3
Long term stability of offset and sensitivity
7
Response time (10 to 90 %)
6
Input resistance T
A
= 25°C
Temperature coefficient of resistance
5,8
Output impedance
Repeatability
4
Position sensitivity
Min.
0.40
20.0
-20
Typ.
0.65
32.5
-2300
10
±4
0.2
±0.1
100
4.0
+750
4.2
0.5
2
Max.
10
1.60
80.0
+35
±1.0
Unit
In. H
2
O
mV/V/in.H
2
O
mV
ppm/°C
mV
µV/V/°C
%FS
mV
µs
kΩ
ppm/°C
kΩ
%FS
µV/V/g
3.0
6.0
Specification notes:
1.
2.
3.
Reference conditions: supply voltage, V
S
= 5 V
DC
, T
A
= 25°C, common-mode line pressure = 0 psig, pressure applied to P2.
Span is the algebraic difference between the output voltage at full scale pressure and the output at zero pressure.
See Definition of Terms:
Hysteresis
- the maximum output difference at any point within the operating pressure range for
increasing and decreasing pressure.
Linearity
- the maximum deviation of measure output of constant temperature (25°C)
from "Best Straight Line" determined by three points, offset, full scale pressure and half full scale pressure.
Maximum difference in output at any pressure with the operating pressure range an temperature within 0 to +70°C after:
a) 100 temperature cycles, 0 to 70°C
b) 1.0 million pressure cycles, 0 psi to full-scale span
Slope of the best straight line from 0 to 70°C. For operation outside this temperature, contact factory for more specific
application information.
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.
This parameter is is not 100 % tested. It is guaranteed by process design and tested on a sample basis only.
If max. proof pressure is exceeded, even momentarily, the package may leak or burst, or the pressure sensing die may fracture.
4.
5.
6.
7.
8.
9.
PHYSICAL DIMENSIONS
0.550
(13.97)
ORDERING INFORMATION
pressure
range
DIP package,
dual ported
S X L010D D 4
P1
P2
0.050
typ.
(1.27)
0.470
(11.94)
0 to 10 "H
2
O
0.135
(3.43)
0.250
(6.35)
0.090 typ.
(2.29)
0.300
(7.62)
0.285
(7.24)
0.380
(9.65)
0.070
(1.78)
0.600
(15.24)
0.01
(0.25)
0.110 typ.
(2.79)
0.020 typ.
(0.51)
0.100 typ.
(2.54)
SenSym and Sensortechnics reserve the
right to make changes to any products her-
ein. 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.
mass:
1 g
2/2
dimensions in inches (mm)
July 2005 / 552
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