SCX Series
Precision Compensated
Pressure Sensors
APPLICATIONS
Medical Equipment
Computer Peripherals
Pneumatic Controls
HVAC
FEATURES
Precision Temperature
Compensation
Calibrated Zero and
Span
The SCX series sensors provides 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
gauge pressures from 1 psi (SCX01) up to 150 psi (SCX150).
The Absolute (A) devices have an internal vacuum
reference and an output voltage proportional to absolute
pressure. The Differential (D) devices allow application of
pressure to either side of the pressure sensing diaphragm
and can be used for gauge or differential pressure
measurements.
The SCX devices feature an integrated circuit sensor
element and laser trimmed thick film ceramic housed in a
compact nylon case. This package provides isolation to
external package stresses and has convenient mounting
holes and pressure 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 conditioning circuitry. If
the application requires extended temperature range
operation beyond 0°C 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 DC supply voltage up to
+20V is acceptable.
Because these devices have very low noise and excellent
temperature compensation, they are ideal for medical and
other high performance applications. The 100
microsecond response time also makes this series an
excellent choice for computer peripherals and pneumatic
control applications.
Contact your local SenSym ICT representative, the factory,
or go to Sensym ICT’s Web site at www.sensym-ict.com for
additional details.
Low Noise
Small Size
High Impedance for
Low Power
Applications
EQUIVALENT
CIRCUIT
2
1
3
5
6
4
PIN 1) TEMPERATURE OUTPUT (+)
PIN 2) Vs
PIN 3) +Vo
PIN 4) Gnd
PIN 5) -Vo
PIN 6) TEMPERATURE OUTPUT (-)
PRESSURE SENSORS
SenSym ICT
PRESSURE SENSORS
SenSym ICT
SCX Series
PRESSURE SENSOR CHARACTERISTICS
(all devices)
Maximum Ratings
(For All Devices)
Supply Voltage, V
S
Common Mode Pressure
Lead Soldering Temperature
Environmental Specifications
(For All Devices)
Temperature Range
Compensated
Operating
Storage
Humidity Limits
+20V
dc
50 psig
250°C (2 to 4 seconds)
0°C to +70°C
-40°C to +85°C
-55°C to +125°C
0 to 100% RH, non-condensing
STANDARD PRESSURE RANGES
(all devices)
Part Number
SCX01DN or DNC
SCX05DN or DNC
SCX15AN or ANC
SCX15DN or DNC
SCX30AN or ANC
SCX30DN or DNC
SCX100AN or ANC
SCX100DN or DNC
SCX150AN or ANC
SCX150DN or DNC
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 psia
0-150 psid
Burst Pressure*
20 psid
20 psid
45 psia
45 psid
90 psia
90 psid
150 psia
150 psid
150 psia
150 psid
Typical Full-Scale Span (FSS)
18 mV
60 mV
90 mV
90 mV
90 mV
90 mV
100 mV
100 mV
90 mV
90 mV
* Maximum pressure above which causes permanent sensor failure.
SCX PRIME GRADE PERFORMANCE CHARACTERISTICS
(1)
Characteristics
Operating
Pressure
(psi)
0-1
0-5
0-15
0-30
0-100
0-150
Sensitivity
(mV/psi)
Typ
18.0
12.0
6.0
3.0
1.0
0.6
Full-Scale Span
(2)
(mV)
Min
17.82
59.4
89.1
89.1
99.0
89.0
Typ
18.0
60.0
90.0
90.0
100.0
90.0
Max
18.18
60.6
90.9
90.9
101.0
91.0
SCX01DN
SCX05DN
SCX15AN or DN
SCX30AN or DN
SCX100AN or DN
SCX150AN or DN
SCX Series
SCX PERFORMANCE CHARACTERISTICS,
all ranges
(1)
Max
+300
±0.5
±500
±1.0
±0.5
–
–
6.2
–
–
Unit
µV
%FSS
µV
%FSS
%FSS
kΩ
kΩ
Vdc
µsec
mV
S P E C I F I C AT I O N
N O T E S
(all devices)
Note 1: Reference Conditions:
Unless otherwise noted:
Supply Voltage, V
S
=12Vdc,
T
A
=25°C, Common Mode
Line pressure=0 psig,
Pressure Applied to Port B.
For absolute devices only,
pressure is applied to Port A
and the output polarity is
reversed.
Note 2: Full-Scale Span is the
algebraic difference between
the output voltage at full-
scale pressure and the
output at zero pressure.
Full-Scale Span is
ratiometric to the supply
voltage.
Note 3:
Pressure Hysteresis – the
maximum output difference
at any point within the
operating pressure range for
increasing and decreasing
pressure.
Pressure Non-Linearity – the
maximum deviation of
measure output, at constant
temperature (25°C), from
“best straight line” through
three points (offset pressure,
full-scale pressure, one-half
full-scale pressure).
Characteristics
Zero Pressure Offset
(1) (11)
Combined Pressure Non-Linearity
and Pressure Hysteresis
(3)
Temperature Effect on Offset
(0°C to 70°C)
(4)
Temperature Effect on Span
(0°C to 70°C)
(4)
Repeatability
(5)
Input Resistance
(6)
Output Resistance
(7)
Common Mode Voltage
(8)
Response Time
(9)
Long Term Stability of Offset & Span
(10)
Min
-300
–
–
–
–
–
–
5.8
–
–
Typ
0.0
±0.1
±100
±0.2
±0.2
4.0
4.0
6.0
100
±0.1
SCX C GRADE PERFORMANCE CHARACTERISTICS
(1)
Characteristics
Operating Sensitivity
Pressure (mV/psi)
(psi)
Typ
0-1
0-5
0-15
0-30
0-100
0-150
18.0
12.0
6.0
3.0
1.0
0.6
Full-Scale Span
(2)
(mV)
Min
Typ
Max
17.0
57.5
85.0
85.0
95.0
85.0
18.0
60.0
90.0
90.0
100.0
90.0
19.0
62.5
95.0
95.0
105.0
95.0
SCX01DNC
SCX05DNC
SCX15ANC or DNC
SCX30ANC or DNC
SCX100ANC or DNC
SCX150ANC or DNC
Note 4: Maximum error band of the
offset voltage and the error
band of the span, relative to
the 25°C reading.
Note 5: Maximum difference in
output at any pressure
within the operating pressure
range and the temperature
within 0°C to +70°C after:
a) 100 temperature
cycles, 0°C to +70°C
b) 1 million pressure
cycles, 0 psi to full-scale
span.
Note 6:
Input resistance is the
resistance between pins 2
and 4.
Output resistance is the
resistance between pins 3
and 5.
SCX C GRADE PERFORMANCE CHARACTERISTICS,
all ranges
(1)
Characteristics
Zero Pressure Offset
(1) (11)
Min
-1
–
–
–
–
–
–
5.7-6.3
–
–
Typ
0.0
±0.1
±0.2
±0.4
±0.2
4.0
4.0
6.0
100
±0.1
Max
+1
±1.0
±1.0
±2.0
±0.5
–
–
6.2
–
–
Unit
mV
%FSS
mV
%FSS
%FSS
kΩ
kΩ
VDC
µsec
mV
Note 7:
Combined Pressure Non-Linearity
and Pressure Hysteresis
(3)
Temperature Effect on Offset
(0°C to 70°C)
(4)
Temperature Effect on Span
(0°C to 70°C)
(4)
Repeatability
(5)
Input Resistance
(6)
Output Resistance
(7)
Common Mode Voltage
(8)
Response Time
(9)
Long Term Stability
of Offset & Span
(10)
Note 8: Common Mode voltage of
the output arms (Pins 3 and
5) for V
S
=12Vdc.
Note 9: Response time for a 0 psi to
full-scale span pressure step
change, 10% to 90% rise time.
Note 10: Long term stability over a
one year period.
Note 11: Maximum zero pressure
offset for absolute device is
0 ±500µV.
PRESSURE SENSORS
SenSym ICT
PRESSURE SENSORS
SenSym ICT
SCX Series
Compensated Pressure Sensors
PHYSICAL DIMENSIONS
Dimension in inches [mm]
1.10 REF.
.80 [20.3]
1.03 [26.2]
.55 [14.0]
.36 [9.1]
Ø.19 [Ø4.8]
2 PLS
1.08 [27.4]
.41 [10.4]
1 2 3 4 5 6
.25 [6.4]
.020 [.51] X .014 [.4]
PINS 6 PLS
Ø.14 [Ø3.6] THRU RIVET
MOUNTING HOLES
.85 [21.6]
Ø.08 [Ø2.0] I.D.
PRESSURE PORT B
.05 [1.3]
R.13 [R3.3]
TYP
.10 [2.5]
PIN SPACING
.05 [1.3]
Ø.08 [Ø2.0] I.D.
PRESSURE PORT A
ORDERING INFORMATION
SCX
SenSym ICT
Pressure Transducer
Pressure Range (psi)
01
= 0 - 1
D
05
= 0 - 5
D
15
= 0 - 15
D, A
30
= 0 - 30
D, A
100
= 0 - 100
D, A
150
= 0 - 150
D, A
1 408 954 6700
FAX: 408 954 9458
SenSym ICT
1804 McCarthy Boulevard
Milpitas, CA 95035
www.sensym-ict.com
SEN105 SCX_06/02
B
.42 [10.7]
.20 [5.1]
Special Options
-90
90 degree lead bend
Accuracy Grade
N
Prime Grade Temperature Compensated
NC
C Grade Temperature Compensated
Type
A
Absolute
D
Differential
GENERAL DISCLAIMER:
Invensys Sensor Systems reserves the right to make
changes to its products and their specifications at any time, without prior notice to
anyone. Invensys Sensor Systems has made every effort to ensure accuracy of the
information contained herein but can assume no responsibility for inadvertent
errors, omissions, or subsequent changes. Invensys Sensor Systems does not assume
any responsibility for the use of any circuit or other information described within this
document, and further, makes no representations of any kind that the circuit and
information described herein is free of infringement of any intellectual property right
or any other right of third parties. No express or implied licenses of any Invensys
Sensor Systems intellectual property right is granted by implication or otherwise.
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