27 and 37
UltraStable™
27
37
PC Board Mountable Pressure Sensor
0-100 mV Output
Current Excitation
Gage and Differential
Temperature Compensated
DESCRIPTION
The 27 and 37 UltraStable™ are high performance, temperature compensated, piezoresistive silicon
pressure sensors packaged in a TO-8 configurations. It uses Measurement Specialties’ proprietary
UltraStable™ die to provide excellent performance and long-term stability over wide temperatures.
Gage and differential pressure ranges from 0-15 to 0-250 psi are available. Integral temperature
compensation is provided over a range of -20ºC to +85ºC using laser-trimmed resistors. An additional laser-
trimmed resistor is included to normalize pressure sensitivity variations by programming the gain of an external
differential amplifier. This provides sensitivity interchangeability of ±1%.
Please refer to Models 23 and 33 for information on products with operating pressures less than 0-15
psi.
FEATURES
TO-8 Package
-20ºC to +85ºC Compensated
Temperature Range
±0.1% Non Linearity
1.0% Interchangeable Span
(provided by gain set resistor)
Solid State Reliability
APPLICATIONS
Medical Instruments
Process Control
Factory Automation
Handheld Calibrators
Environmental Control
STANDARD RANGES
Range
0 to 15
0 to 30
0 to 50
0 to 100
0 to 250
27
psig
37
psid
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UltraStable™
PERFORMANCE SPECIFICATIONS
Supply Current: 1.5 mA
Ambient Temperature: 25°C (unless otherwise specified)
PARAMETERS
Span
Zero Pressure Output
Pressure Non Linearity
Pressure Hysteresis
Input Resistance
Output Resistance
Temperature Error – Span
Temperature Error – Zero
Temperature Coefficient – Resistance
Thermal Hysteresis – Zero
Short Term Stability (Offset & Span)
Long Term Stability (Offset & Span)
Supply Current
Response Time (10% to 90%)
Output Noise (10Hz to 1kHz)
Pressure Overload
Compensated Temperature
Operating Temperature
Storage Temperature
Weight
Solder Temperature
Media
250ºC Max 5 Sec.
Non-Corrosive Dry Gases Compatible with Silicon, Pyrex,
RTV, Gold, Nickel, and Aluminum
-20
-40
-50
0.5
-0.5
-0.5
MIN
75
-2
-0.1
-0.1
2200
TYP
100
±0.05
±0.01
4000
4200
±0.3
±0.1
0.15
±0.05
±0.05
±0.1
1.5
1.0
1.0
MAX
150
2
0.1
0.1
5800
0.5
0.5
UNITS
mV
mV
%Span
%Span
Ω
Ω
%Span
%Span
%/ºC
%Span
%Span
%Span
NOTES
1
2
3
3
3
3
4
5
6
7
2.0
mA
mS
µV p-p
3X
+85
+125
+150
3
Rated
°C
°C
°C
grams
Notes
1.
Ratiometric to supply current. For 250 psi devices, the minimum span value is 62 mV.
2.
Best fit straight line.
3.
Maximum temperature error between -20°C and +85°C with respect to 25°C.
4.
Short term stability over 7 days with constant current and temperature.
5.
Long term stability over a one year period
with constant current and temperature.
6.
For a zero-to-full scale pressure step change.
7.
For topside applications, 2X maximum for 250 psi device. For backside applications, 3X not to exceed 100 psi on all ranges
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UltraStable™
DIMENSIONS
CONNECTIONS
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UltraStable™
APPLICATION SCHEMATIC
ORDERING INFORMATION
27 - 015 G
Type (G = Gage)
Pressure Range
Model
37 - 015 D
Type (D = Differential)
Pressure Range
Model
NORTH AMERICA
Measurement Specialties
45738 Northport Loop West
Fremont, CA 94538
Tel: 1-800-767-1888
Fax: 1-510-498-1578
Sales:
pfg.cs.amer@meas-spec.com
EUROPE
Measurement Specialties
(Europe), Ltd.
26 Rue des Dames
78340 Les Clayes-sous-Bois, France
Tel: +33 (0) 130 79 33 00
Fax: +33 (0) 134 81 03 59
Sales:
pfg.cs.emea@meas-spec.com
ASIA
Measurement Specialties
(China), Ltd.
No. 26 Langshan Road
Shenzhen High-Tech Park (North)
Nanshan District, Shenzhen 518057
China
Tel: +86 755 3330 5088
Fax: +86 755 3330 5099
Sales:
pfg.cs.asia@meas-spec.com
The information in this sheet has been carefully reviewed and is believed to be accurate; however, no responsibility is assumed for
inaccuracies. Furthermore, this information does not convey to the purchaser of such devices any license under the patent rights to the
manufacturer. Measurement Specialties, Inc. reserves the right to make changes without further notice to any product herein. Measurement
Specialties, Inc. makes no warranty, representation or guarantee regarding the suitability of its product for any particular purpose, nor does
Measurement Specialties, Inc. assume any liability arising out of the application or use of any product or circuit and specifically disclaims
any and all liability, including without limitation consequential or incidental damages. Typical parameters can and do vary in different
applications. All operating parameters must be validated for each customer application by customer’s technical experts. Measurement
Specialties, Inc. does not convey any license under its patent rights nor the rights of others.
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