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85 Flush Mount Pressure Sensor - MEAS 85F

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• 316L SS
• Flush Diaphragm
• 0 - 100mV Output
• O-Ring Flush Mount
• 0ºC to 70ºC Compensated Temperature
• ±0.1% Pressure Non Linearity
• ±0.75% Temperature Performance
• ±1.0% Interchangeable Span (provided by gain set resistor)

Model Number: MEAS 85F
Data Sheet:

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Product Specification

85 Flush Mount Pressure Sensor

The 85 Flush Mount is a small profile, media compatible, piezoresistive silicon pressure sensor packaged in a 316L stainless steel housing. The 85 Flush Mount is designed for o-ring mounting where the diaphragm must not be shrouded by a weld ring or fitting.

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%.

MEAS 85F Pressure Sensor Features
• 316L SS
• Flush Diaphragm
• 0 - 100mV Output
• Absolute and Gage
• Temperature Compensated
• O-Ring Flush Mount
• 0°C to 70°C Compensated Temperature
• ±0.1% Pressure Non Linearity
• ±0.75% Temperature Performance
• ±1.0% Interchangeable Span (provided by gain set resistor)
• Solid State Reliability

MEAS 85F Pressure Sensor Applications
• Dialysis Machines
• Infusion Pumps
• Medical Systems
• Pressure Transmitters
• Level Systems

MEAS 85F Pressure Sensor Performance Specifications
Supply Current: 1.5mA
Ambient Temperature: 25°C (unless otherwise specified)
Parameters are specified for the compensated versions only

PARAMETERS	MIN	TYP	MAX	UNITS	NOTES
Span	65	100	150	mV	1
Zero Pressure Output	-2		2	mV	2
Pressure Non Linearity	-0.1		0.1	%Span	3
Pressure Hysteresis	-0.05		0.05	%Span
Repeatability		±0.02		%Span
Input Resistance	2000	3500	5800	Ω
Output Resistance	4000		6000	Ω
Temperature Error – Span	-0.75		0.75	%Span	4
Temperature Error – Offset	-0.75		0.75	%Span	4
Thermal Hysteresis – Span	-0.25		0.25	%Span	4
Thermal Hysteresis – Offset	-0.25		0.25	%Span	4
Long Term Stability – Span		±0.1		%Span/year
Long Term Stability – Offset		±0.1		%Span/year
Supply Current	0.5	1.5	2.0	mA	5
Output Load Resistance	5			MΩ	6
Insulation Resistance (50Vdc)	50			MΩ	7
Output Noise (10Hz to 1kHz)		1.0		uV p-p
Response Time (10% to 90%)		1.0		Ms
Pressure Overload			3X	Rated	8
Pressure Burst			4X	Rated	9
Compensated Temperature	0		70	ºC
Operating Temperature	-20		+125	ºC	10
Storage Temperature	-50		+125	ºC	10
Media – Pressure Port	Liquids and gases compatible with 316/316L Stainless Steel

Notes
1. For amplified output circuits, 3.012V ±`% interchangeability with gain set resistor. See Application Schematic.
2. Measured at vacuum for Absolute (A), ambient for Gage (G).
3. Best fit straight line.
4. Over the compensated temperature range with respect to 25°C.
5. Guarantees output/input ratiometricity.
6. Load resistance to reduce measurement errors due to output loading.
7. Between case and sensing element.
8. The maximum pressure that can be applied without changing the transducer’s performance or accuracy.
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°C to +105°C.

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