85
Vacuum Gage (Compensated)
SPECIFICATIONS
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316L SS Pressure Sensor
Small Profile
0 - 100mV Output
Vacuum Gage
Temperature Compensated
The 85 vacuum gage is a small profile, media
compatible, piezoresistive silicon pressure sensor packaged in a
316L stainless steel housing. The 85 vacuum gage is offered in
a weldable package or with a variety of threaded fittings such as
1/4 and 1/8NPT, 1/4BSP as well as custom process fittings.
The 85 vacuum gage is designed for OEM applications
where compatibility with corrosive media is required. The sensing
package utilizes silicon oil to transfer pressure from the 316L
stainless steel diaphragm to the sensing element. A ceramic
substrate is attached to the package that contains laser-trimmed
resistors for temperature compensation and offset correction. An
additional laser trimmed resistor is included which can be used to
adjust an external differential amplifier and provide span
interchangeability to within ±1%.
Please refer to the 85 uncompensated, compensated
and constant voltage datasheets for more information on different
features of the 85.
SENSOR SOLUTIONS
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85
Vacuum Gage (Compensated)
FEATURES
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Weldable and Threaded Process Fittings
-40ºC to +125ºC Operating
Temperature Range
Up to ±0.1% Pressure Non Linearity
1.0% Interchangeable Span
(provided by gain set resistor)
Solid State Reliability
APPLICATIONS
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Medical Instruments
Process Control
Fresh & Waste Water Measurements
Partial Vacuum Gas Measurement
Pressure Transmitters
Tank Level Systems (RV & Industrial)
STANDARD RANGES
Range
0 to 15
0 to 30
0 to 50
0 to 100
0 to 300
0 to 500
psiv
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SENSOR SOLUTIONS
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85
Vacuum Gage (Compensated)
PERFORMANCE SPECIFICATIONS
Supply Current: 1.5mA
Ambient Temperature: 25°C (unless otherwise specified)
PARAMETERS
Span
Zero Pressure Output
Pressure Non Linearity
Pressure Hysteresis
Repeatability
Input Resistance
Output Resistance
Temperature Error – Span
Temperature Error – Offset
Thermal Hysteresis – Span
Thermal Hysteresis – Offset
Long Term Stability – Span
Long Term Stability – Offest
Supply Current
Output Load Resistance
Insulation Resistance (50Vdc)
Output Noise (10Hz to 1KHz)
Response Time (10% to 90%)
Pressure Overload
Pressure Burst
Compensated Temperature
Operating Temperature
Storage Temperature
Media – Pressure Port
-20
-40
-50
0.5
5
50
1.0
0.1
3X
4X
+85
+125
+125
2000
4000
-1.0
-1.0
-0.25
-0.25
±0.05
±0.05
±0.10
±0.10
1.5
2.0
MIN
75
-1.0
-0.20
-0.05
±0.02
±0.02
3500
5800
6000
1.0
1.0
0.25
0.25
TYP
100
0
MAX
150
1.0
0.20
0.05
UNITS
mV
mV
%Span
%Span
%Span
Ω
Ω
%Span
%Span
%Span
%Span
%Span/year
%Span/year
mA
MΩ
MΩ
µV p-p
ms
Rated
Rated
ºC
ºC
ºC
10
10
9
6
7
8
4
4,5
4
4
NOTES
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Liquids and Gases compatible with 316L Stainless Steel
Notes
1. For amplified output circuits, 3.012V ±1% interchangeability with gain set resistor. See application schematic.
2. Measured at ambient for vacuum gage (V).
3. Best fit straight line. For pressure range 15 - 100psi, PNL is ±0.1 %Span.
4. Over the compensated temperature range with respect to 25°C.
5. 15psi range sensors have a temperature error – offset of ±1.5% (max).
6. Guarantees output/input ratiometricity.
7. Load resistance to reduce measurement errors due to output loading.
8. Between case and sensing element.
9. The maximum pressure that can be applied to a transducer without rupture of either the sensing element or transducer.
10. Maximum temperature range for product with standard cable and connector is -20 to +105°C.
SENSOR SOLUTIONS
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85
Vacuum Gage (Compensated)
DIMENSIONS
SENSOR SOLUTIONS
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85
Vacuum Gage (Compensated)
APPLICATION SCHEMATIC
SENSOR SOLUTIONS
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