MODEL 84
316 SS Pressure Sensor
0-100 mV Output
Gage, Sealed Gage and Absolute
Temperature Compensated
Low Pressure
• Medical Instruments
• Process Control
• Oceanography
• Refrigeration/Compressors
• Pressure Transmitters
• Level Systems
DESCRIPTION
The Model 84 is a media compatible, compensated, piezoresis-
tive silicon pressure sensor packaged in a 316 stainless
steel housing. The sensing package utilizes silicon oil to
transfer pressure from the 316 stainless steel diaphragm to the
sensing element.
The Model 84 is designed for low pressure applications
with integral temperature compensation provided from 0°C to
+50°C and is intended to be secured in place with an O-ring. A
ceramic substrate is included with the package that contains
thick film resistors that are laser trimmed after temperature
testing to provide temperature compensation and zero offset
adjustment. An additional laser-trimmed resistor on the
substrate can be used to adjust sensitivity variations by setting
the gain of an external differential amplifier to within +1%
interchangeability. An uncompensated version is also available.
Alternatives include O-ring models 154N or 86, 1/4 NPT
Model 96, and flush mount Models 82 and 85. High pressure
sensors are also available.
Pressure
FEATURES
•
O-ring Mount
•
±0.25% Pressure Non-linearity
•
±1.0% Temperature Performance
•
1.0% Interchangeable Span
(provided by gain set resistor)
•
Solid State Reliability
•
Low Power
STANDARD RANGES
Range
0 to 5
0 to 15
0 to 30
0 to 50
0 to 100
0 to 250
psig
psis
psia
DIMENSIONS
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
I n t e r n e t : w w w. m s i u s a . c o m
Te l : 1 - 7 5 7 - 7 6 6 - 1 5 0 0
N o r t h A m e r i c a To l l F r e e : 1 - 8 0 0 - 7 4 5 - 8 0 0 8
Fax: 1-757-766-4297
1-56
ISO Standard
316 SS Pressure Sensor
MODEL 84
PERFORMANCE SPECIFICATIONS
Supply Current: 1.5mA
Ambient Temperature: 25°C (Unless otherwise specified)
PARAMETERS
MIN
TYP
MAX
UNITS
NOTES
__________________________________________________________________________________________________________________________________________________
Full Scale Output Span
50
100
200
mV
__________________________________________________________________________________________________________________________________________________
Zero Pressure Output
1
5
±mV
2, 3, 4
__________________________________________________________________________________________________________________________________________________
Static Accuracy
0.5
±% Span
5
__________________________________________________________________________________________________________________________________________________
Input & Output Resistance
2500
6000
Ω
__________________________________________________________________________________________________________________________________________________
Temperature Error - Span
1.0
±% Span
1, 2, 3
__________________________________________________________________________________________________________________________________________________
Temperature Error - Zero
1.0
±% Span
1, 2, 3
__________________________________________________________________________________________________________________________________________________
Supply Current
0.5
1.5
2.0
mA
__________________________________________________________________________________________________________________________________________________
Output Load Resistance
5
MΩ
__________________________________________________________________________________________________________________________________________________
Insulation Resistance (50 VDC)
50
MΩ
8
__________________________________________________________________________________________________________________________________________________
Pressure Overload
3X
Rated
6
__________________________________________________________________________________________________________________________________________________
Operating Temperature
–10°C to +80°C
__________________________________________________________________________________________________________________________________________________
Compensated Temperature
0°C to +50°C
__________________________________________________________________________________________________________________________________________________
Storage Temperature
–40°C to +125°C
__________________________________________________________________________________________________________________________________________________
Media
Compatible with 316 Stainless Steel
__________________________________________________________________________________________________________________________________________________
Weight
20 grams
CONNECTIONS
ORDERING INFORMATION
APPLICATION SCHEMATIC
Dec 2002
ISO Standard
1-57
Pressure
Notes
1. Temperature Range: 0-50°C in reference to 25°C.
2. For amplified output circuits, see Application Note TN003.
3. For Model 84, compensation resistors are an integral part of the sensor
package. No additional external resistors are required. Model 84 is
interchangeable to within ±1% of the amplifier output span only when
used with a gain stage as shown in Application Schematic.
4. Measured at vacuum for absolute (A), ambient pressure for gage (G) and
one standard atmosphere for sealed gage (S).
5. Includes repeatability, pressure non-linearity (best fit straight line) and
pressure hysteresis.
6. 20 psi for 5 psi version; 3X or 450 psi, whichever is less, for other
versions.
7. O-ring dimensions: I.D. 0.614"x 0.070".
8. Between case and sensing element.
9. Standard gauge units are not recommended for vacuum applications. For vacuum
applications below 1/2 atmosphere, contact factory.
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