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SCX150DN PDF даташит

Спецификация SCX150DN изготовлена ​​​​«Sensor Technics» и имеет функцию, называемую «Precision compensated pressure sensors».

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Номер произв SCX150DN
Описание Precision compensated pressure sensors
Производители Sensor Technics
логотип Sensor Technics логотип 

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SCX150DN Даташит, Описание, Даташиты
SCX Series
Precision compensated pressure sensors
FEATURES
· 0...1 to 0...150 psi
· Precision temperature
compensation
· Calibrated zero and span
· Small size
· Low noise
· High accuracy
· High impedance for
low power applications
APPLICATIONS
· Medical equipment
· Barometry
· Computer peripherals
· Pneumatic control
· HVAC
EQUIVALENT CIRCUIT
2
Vs
1
35
6
GENERAL DESCRIPTION
The SCX series sensors will provide a very
cost effective solution for pressure
applications that require high accuracy over
a wide temperature range. These internally
calibrated and temperature compensated
sensors were specifically designed to
provide an accurate and stable output over
a 0°C to 70°C temperature range. This series
is intended for use with non-corrosive, non-
ionic working fluids such as air, dry gases,
and the like.
Devices are available to measure absolute,
differential, and gage pressures from 1 psi
(SCX01) up to 150 psi (SCX150). The abso-
lute (A) devices have an internal vacuum
reference and an output voltage propor-
tional to absolute pressure. The differential
(D) devices allow application of pressure
to either side of the pressure sensing
diaphragm and can be used for gage or
differential pressure measurements.
The SCX devices feature an integrated cir-
cuit sensor element and laser trimmed thick
film ceramic housed in a compact nylon
case. This package provides excellent
corrosion resistance and provides isolation
to external package stresses. The package
has convenient mounting holes and pres-
sure ports for ease of use with standard
plastic tubing for pressure connection.
All SCX devices are calibrated for span to
within ±1 % and provide a very low zero
pressure output of ±300 microvolts
maximum. Thus, for many applications no
trimming networks are required in the signal
Scale:
1 cm
½ inch
conditioning circuitry. If the application
requires extended temperature range
operation, beyond 0 to 70°C, two pins which
provide an output voltage proportional to
temperature are available for use with
external circuitry.
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.
Because these devices have very low
noise and excellent temperature compen-
sation, they are ideal for medical and other
high performance applications. The 100
microsecond response time also makes this
series an excellent choice for computer peri-
pherals and pneumatic control applications.
ELECTRICAL CONNECTION
123456
Bottom view
Pin 1) Temperature output (+)
Pin 2) V
S
Pin 3) Output (+)
Pin 4) Ground
Pin 5) Output (-)
Pin 6) Temperature output (-)
4
August 2005 / 053
Note: The polarity indicated is for pressure applied to port B
(for absolute devices pressure is applied to port A
and the output polarity is reversed.)
1/10
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SCX150DN Даташит, Описание, Даташиты
SCX Series
Precision compensated pressure sensors
PRESSURE SENSOR CHARACTERISTICS1
STANDARD PRESSURE RANGES
Part Number
SCX01DN
SCX05DN
SCX15AN
SCX15DN
SCX30AN
SCX30DN
SCX100AN
SCX100DN
SCX150DN
Operating pressure
0 - 1 psid
0 - 5 psid
0 - 15 psia
0 - 15 psid
0 - 30 psia
0 - 30 psid
0 - 100 psia
0 - 100 psid
0 - 150 psid
Proof pressure2
20 psid
20 psid
30 psia
30 psid
60 psia
60 psid
150 psia
150 psid
150 psid
Full-scale span1,3
Min.
17.82 mV
59.4 mV
89.1 mV
89.1 mV
89.1 mV
89.1 mV
99.0 mV
99.0 mV
89.0 mV
Typ.
18 mV
60 mV
90 mV
90 mV
90 mV
90 mV
100 mV
100 mV
90 mV
Max.
18.18 mV
60.6 mV
90.9 mV
90.9 mV
90.9 mV
90.9 mV
101.0 mV
101.0 mV
91.0 mV
Maximum ratings (for all devices)
Supply voltage VS
Common-mode pressure
Lead temperature (soldering, 4 seconds)
+20 VDC
50 psig
250°C
Environmental specifications (for all devices)
Temperature range
Compensated
Operating
Storage
Humidity limits (no condensation)
0 to 70°C
-40°C to +85°C
-55°C to +125°C
0 to 99 %RH
COMMON PERFORMANCE CHARACTERISTICS1
Characteristic
Zero pressure offset12
Combined linearity and hysteresis4
Temperature effect on span (0 - 70°C)5
Temperature effect on offset (0 - 70°C)5
Repeatability6
Input impedance7
Output impedance8
Common-mode voltage9
Response time10
Long term stability of offset and span11
Min.
-300
---
---
---
---
---
---
5.8
---
---
Typ.
0
±0.1
±0.2
±100
±0.2
4.0
4.0
6.0
100
±0.1
Max.
+300
±0.5
±1.0
±500
±0.5
---
---
6.2
---
---
Unit
µV
%FSO
%FSO
µV
%FSO
k
k
VDC
µsec
mV
Specification notes:
1.
Reference conditions: unless otherwise noted: supply voltage, V = 12 V, T = 25°C, common-mode line pressure = 0 psig,
SA
pressure applied to Port B. For absolute devices only, pressure is applied to Port A and the output polarity is reversed.
2. Maximum pressure above which causes permanent sensor failure.
3. 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.
4. See Definition of Terms. Hysteresis - the maximum output difference at any point within the operating pressure range for
increasing and decreasing pressure.
5. Maximum error band of the offset voltage and the error band of the span, relative to the 25°C reading.
6. Maximum difference in output at any pressure with the operating pressure range and temperature within 0°C to +50°C after:
a) 1,000 temperature cycles, 0°C to +70°C
b) 1.5 million pressure cycles, 0 psi to full-scale span
7. Input impedance is the impedance between pins 2 and 4.
8. Output impedance is the impedance between pins 3 and 5.
9.
This is the common-mode voltage of the output arms (pins 3 and 5) for V = 12 V .
S DC
10. Response time for a 0 psi to full-scale span pressure step change, 10 % to 90 % rise time.
11. Long term stability over a one year period.
12. Maximum zero pressure offset for absolute devices is 0 ±500 µV.
2/10
August 2005 / 053
www.sensortechnics.com
Free Datasheet http://www.datasheet4u.com/









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SCX150DN Даташит, Описание, Даташиты
SCX Series
Precision compensated pressure sensors
TYPICAL PERFORMANCE CHARACTERISTICS
GENERAL DISCUSSION
The SCX series devices give a voltage output which is directly pro-
portional to applied pressure. The devices will give an increasing
positiv going output when increasing pressure is applied to pressure
port PB of the device. If the input pressure connections are reversed,
the output will increase with decreases in pressure. 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. Since for absolute devices pressure is applied to
port PA, output polarity will be reversed.
User calibration
The SCX devices are fully calibrated for offset and span and should
therefore require little if any user adjustment in most applications.
For precise span and offset adjustments, refer to the applications
section herein.
Vacuum reference (absolute device)
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
SCX devices are compatible with most non-corrosive gases.
Because the circuit is coated with a protective silicon gel, many
otherwise corrosive environments can be compatible with the
sensors. As shown in the physical construction diagram below, fluids
must generally be compatible with silicon gel, plastic, aluminium,
RTV, silicon, and glass for use with Port B. For questions concerning
media compatibility, contact the factory.
MECHANICAL AND MOUNTING
CONSIDERATIONS
The SCX nylon housing is designed for convenient pressure con-
nection and easy PC board mounting. To mount the device horizon-
tally to a PC board, the leads can be bent downward and the package
attached to the board using either tie wraps or mounting screws.
For pressure attachment, tygon or silicon tubing is recommended.
All versions of the SCX sensors have two (2) tubes available for
pressure connection. For absolute devices, only port PA is active.
Applying pressure through the other port will result in pressure dead
ending into the backside of the silicon sensor and the device will
not give an output signal with pressure.
For gage applications, pressure should be applied the port PB. Port
PA is then the vent port which is left open to the atmosphere. For
differential pressure applications, to get proper output signal polarity,
port PB should be used as the high pressure port and PA should be
used as the low pressure port.
August 2005 / 053
3/10
www.sensortechnics.com
Free Datasheet http://www.datasheet4u.com/










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