85 Uncompensated
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316L SS Pressure Sensor
Small Profile
0 - 100mV Output
Absolute and Gage
DESCRIPTION
The 85 vacuum uncompensated pressure sensor is a small profile, media compatible, piezoresistive silicon
pressure sensor packaged in a 316L stainless steel housing. The 85 vacuum uncompensated pressure sensor
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 other custom process fittings.
The 85 uncompensated 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.
Please refer to the 85 compensated and constant voltage datasheets for more information on different features
of the 85.
FEATURES APPLICATIONS
Weldable and Threaded Process Fittings
Medical Instruments
-40ºC to +125ºC Operating Temperature
Process Control
±0.1% Pressure Non Linearity
Fresh & Waste Water Measurements
Solid State Reliability
Partial Vacuum Gas Measurement
Pressure Transmitters
Tank Level Systems (RV & Industrial)
STANDARD RANGES
Range
psia
psig
0 to 5
0 to 15
0 to 30
0 to 50
0 to 100
0 to 300
0 to 500
85 Uncompensated
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PERFORMANCE SPECIFICATIONS
Supply Current: 1.5mA
Ambient Temperature: 25°C (unless otherwise specified)
PARAMETERS
TYP
MAX
UNITS
NOTES
Sensitivity
27
mV/V @Span
Zero Pressure Output
8.0
mV/V
1
Pressure Non Linearity
0.1
%Span
2
Pressure Hysteresis
0.05
%Span
3
Repeatability
±0.02
%Span
Bridge Resistance
5.8K
Ω
4
Thermal Hysteresis – Span
±0.05
0.25
%Span
5
Thermal Hysteresis – Offset
±0.05
0.25
%Span
5
Temperature Coefficient – Resistance
1.51K
1.75K
PPM/°C
5
Temperature Coefficient – Span
-1.25K
-1.0K
PPM/°C
5, 6
Temperature Coefficient – Offset
30
µV/V/°C
5
Long Term Stability – Span
±0.10
%Span/Year
Long Term Stability – Offset
±0.10
%Span/Year
Supply Current
1.5
2.0
mA
Supply Voltage
5
9.5
V
Output Noice (10Hz to 1kHz)
1.0
uV p-p
Response Time (10% to 90%)
0.1
Ms
Insulation Resistance (50Vdc)
Ω
7
Pressure Overload
3X
Rated
Pressure Burst
4X
Rated
8
Operating Temperature
+125
ºC
Storage Temperature
+125
ºC
Media – Pressure Port
Liquids and Gases compatible with 316L Stainless Steel
Media – Reference Port
Compatible with Silicon, Pyrex, Gold, Fluorosilicone RTV and
316/316L Stainless Steel
Notes
1. Measured at vacuum for absolute (A) and at ambient for gage (G).
2. Best fit straight line. Non linearity is ±0.2% max for 5psiG devices.
3. Pressure hysteresis is min -0.1 to max 0.1 for 5psi absolute.
4. Bridge resistance is measured with both –E pins shorted together.
5. TC values are first order coefficients to a quadratic fit over a temperature range of -20 to +85°C (0 to +50°C for 5psi).
6. 5psiA is -1.7K ~ -1.0K ppm/°C.
7. Between case and sending element.
8. The maximum pressure that can be applied to a transducer without rupture of either the sensing element or transducer.
85 Uncompensated
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DIMENSIONS
CONNECTIONS
85 Uncompensated
85U www.meas-spec.com June 2014
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ORDERING INFORMATION
NORTH AMERICA
EUROPE
ASIA
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
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
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.
85 - 005 G - 0 U T
Pressure Range
Type (A = Absolute, G = Gage)
Model
Fitting Type (0 = Weldable, See Fittings)
Electrical (U = Open Bridge, Uncompensated)
Vent (T = Tube, Blank = No Tube)