ETC 1240-030A-1N

Model 1240 UltraStable
Medical Instrumentation
PC Board Mountable Pressure Sensor
Calibration
0-50 mV Output
Process Control
Absolute, Differential and Gage
Factory Automation
Temperature Compensated
Air Flow Management
Leak Detection
DESCRIPTION
The Model 1240 is a high performance temperature
compensated, piezoresistive silicon pressure sensor packaged in
a dual-in-line configuration and intended for cost sensitive
applications where excellent performance and long-term
stability are required.
Integral temperature compensation is provided over a range
of -20°C to +85°C using laser-trimmed resistors. An additional
laser-trimmed resistor is included to normalize pressure
sensitivity variations, for interchangeability of ±1%.
Gage and Differential pressure ranges from 0-15 PSI to
0-100 PSI are available. Absolute pressure ranges of 0-15 PSIA
and 0-30 PSIA are available. Multiple lead and tube
configurations are also available for customizing the package for
specific applications.
FEATURES
Please refer to the low pressure section for information on
-20°C to +85°C Compensated
Temperature Range
products with operating pressures less than 0-2 PSI. For a
±0.1% Non-linearity
current set resistor, please refer to the Model 1230.
±0.5% Temperature Performance
1.0% Interchangeable Span
(provided by current set resistor)
Solid State Reliability
Low Power
compensated sensor using a gain set resistor as opposed to a
DIMENSIONS
STANDARD RANGES
Range
1-20
psig
psid
psia
0 to 15
●
●
●
0 to 30
●
●
●
0 to 50
●
●
●
0 to 100
●
●
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HITs – Wide Temperature Range
Model 1240 UltraStable
PC Board Mountable Pressure Sensor
PERFORMANCE SPECIFICATIONS
Supply Voltage: See application schematic
Ambient Temperature: 25°C (Unless otherwise specified)
PARAMETERS
MIN
TYP
MAX
UNITS
NOTES
Full Scale Output Span
49.5
50.0
50.5
mV
1, 3
2
±mV
3
2
Zero Pressure Output
Pressure Non-linearity
0.05
0.1
±% Span
Pressure Hysteresis
0.01
0.1
±% Span
3500
4500
Ω
Temperature Error – Span
0.3
0.5
±% Span
3, 4
Temperature Error – Zero
0.1
0.5
±% Span
3, 4
Input Resistance
2500
Temperature Coefficient – Resistance
Thermal Hysteresis – Zero
0.145
%/°C
4
0.05
±% Span
4
Short Term Stability of Offset
0.05
±% Span
14
Short Term Stability of Span
0.05
±% Span
14
Long Term Stability of Offset
0.1
±% Span
15
Long Term Stability of span
0.1
±% Span
15
Supply Current
2.0
Response Time (10% to 90%)
Output Noise
Output Load Resistance
Insulation Resistance (50 VDC)
mA
5
1.0
msec
6
1.0
µV p-p
7
5
MΩ
8
50
MΩ
Pressure Overload
Operating Temperature
3X
Rated
9
–40°C to +125°C
Storage Temperature
–50°C to +150°C
Media
Non-corrosive Gases Compatible with Wetted Materials
Weight
3 Grams
10
Notes
1. Output span of unamplified sensor using current set resistor.
2. Best Fit Straight Line.
3. Compensation resistors are an integral part of the sensor package; no
additional external resistors are required. Pins 7 and 8 must be kept
open.
4. Temperature range: -20 to +85°C in reference to 25°C.
5. Guarantees input/output ratiometricity.
6. For a zero-to-full scale pressure step change.
7. 10 Hz to 1 kHz.
8. Prevents increase of TC–Span due to output loading.
9. 3X or 200 psi maximum, whichever is less.
10. Wetted materials are glass, ceramic, silicon, RTV, nickel, gold, and
aluminum.
11. Soldering of lead pins: 250°C for 5 seconds maximum.
12. Tube length: L=470 ± 5 mil, S=300 ± 3 mil, N=no tube.
13. Lead pins can either be in the same or the opposite direction as the
pressure tube. See Connections/Dimensions drawing for lead
configurations.
14. Normalized offset bridge voltage: 7 days.
15. 1 year.
CONNECTIONS
ORDERING INFORMATION
1240 - 015 G - 3 S
Pressure Tubes (L, S, N - see note 12)
Lead Configuration (1, 3 - see note 13)
Type (G = Gage, A = Absolute, D = Differential)
Pressure Range
Model
APPLICATION SCHEMATIC
June 2001
HITs – Wide Temperature Range
Feel free to contact customer service with any questions at
Toll free 1(800)745-8008; Phone (757)766-1500; Fax (757)766-4297
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