ETC 23A-001G

Models 22, 23 Low Pressure
PC Board Mountable Pressure Sensor
þ
Medical Instrumentation
0-10" H2O to 0-1 PSI
þ
HVAC
þ
Factory Automation
þ
Process Control
þ
Avionics
þ
Air Flow Management
0-100 mV Output
Low Cost
Temperature Compensated
DESCRIPTION
The Models 22 and 23 are temperature compensated,
piezoresistive silicon pressure sensors packaged in TO-8
configurations. They provide excellent performance and longterm stability.
Integral temperature compensation is provided over a range
of 0-50°C using a laser-trimmed ceramic compensation board.
An additional laser-trimmed resistor is included in the Model 23
which can be used to adjust the gain of an external differential
amplifier and provide sensitivity interchangeability of ±1%.
The sensing element used in low pressure Models 22 and 23
has a double bossed design that produces a high sensor output
of 100 mV (typical) at 1 PSI.
The Models 12 and 13 are also available in ranges up to 0250 PSI. For sensors in a dual-in-line package please refer to the
FEATURES
Models 1210 and 1220. For additional information regarding
þ
Solid State Reliability
þ
100mV Output Span
þ
Interchangeable
þ
Temperature Compensated
þ
Low Power
uncompensated sensors, please contact the factory.
DIMENSIONS
STANDARD RANGES
Range
psi
0 to 1
●
0 to 10
1-24
in H2O
●
TO-8 – Low Pressure
Models 22, 23 Low Pressure
PC Board Mountable Pressure Sensor
PERFORMANCE SPECIFICATIONS
Supply Current: 1.5mA
Ambient Temperature: 25°C (Unless otherwise specified)
PRESSURE RANGE
0 - 10 in H2O
0 - 1 psi
PARAMETERS
Full Scale Output Span
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
NOTES
75
100
150
25
35
50
mV
1
2
±mV
2
0.1
±% Span
3
±% Span
Zero Pressure Output
2
Pressure Non-linearity
0.1
Pressure Hysteresis
0.25
0.01
0.05
4400
6000
Temperature Error – Span
0.5
Temperature Error – Zero
0.5
Input & Output Resistance
2500
Thermal Hysteresis – Zero
0.1
Supply Current
1.5
0.05
0.01
0.1
4400
6000
Ω
1.0
0.5
1.0
±% Span
4, 5
1.0
1.0
3.0
±% Span
4, 5
±% Span
4
2.0
1.5
2500
0.2
2.0
mA
Response Time (10% TO 90%)
1.0
1.0
mS
5
Output Noise
1.0
1.0
µV p-p
6
Output Load Resistance
Insulation Resistance (50 VDC)
2
2
MΩ
50
50
MΩ
Long Term Stability
0.2
Pressure Overload
0.5
20
Operating Temperature
8
±% Span/yr
20
psi
–40°C to +125°C
Storage Temperature
–50°C to +150°C
Media
Non-corrosive Gases Compatible with Wetted Materials
Weight
3 Grams
9
Notes
1. Output span of unamplified sensor.
5.
2.
For most models, compensation resistors are in an integral part of the
sensor package; no additional external resistors are required. Test pins
must be kept open.
6.
10 Hz to 1 kHz.
7.
0-10" Water column performance is based on testing at 1 psi full scale
pressure.
3.
Best Fit Straight Line.
8.
Between case and sensing element.
4.
Temperature range: 0-50°C in reference to 25°C.
9.
Wetted materials are glass, ceramic, silicon, RTV, nickel, and aluminum.
CONNECTIONS
M od el 2 2
For a zero-to-full scale pressure step change.
ORDERING INFORMATION
23A - 001 G
Type (G = Gage)
Pressure Range (001 or 10WC) (1 psi or 10" H2O)
Model (23 or 22) (with or without gain set)
APPLICATION SCHEMATIC
Mo d el 2 3
April 2000
TO-8 – Low Pressure
1-25