AC11 low pressure oil filled sensor series are based on piezoresistive silicon pressure sensors packaged in a 316L stainless steel housing. The sensing package utilizes silicon oil to transfer pressure from the 316L diaphragm to the sensing element.

The oil filled sensor is designed for o-ring mounting for the applications where compatibility with corrosive media is required. Each sensor was strictly temperature compensated for both zero and span.

The low pressure oil filled sensor was designed by using backside sturucture(without header) to minimize the oil filled volume, The purpose is to achieve high stability and lower the temperature shift.


* Low pressure with high stability
* Wide operable temperature range -40-125℃
* Compatible with corrosive media
* Standard mounting size


* Process control
* Fresh and waste water measurements
* Medical instruments
* Pressure transmitters

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Remark: Ribbon Cable or Connect Pins are optional for all models

Low Pressure Oil Filled Sensor

Specifications of current excitation(1.5mA, 25℃)
Parameters Min. Typical Max.
Pressure Range 0-7Kpa(1PSI);0-10Kpa(1.5PSI)
Non-Linearity1 7kPa ±0.2 ±0.3
10kPa ±0.5 ±0.8
Hysteresis ±0.05 ±0.1
Repeatibility ±0.05 ±0.1
Zero -1.5 ±1 1.5
Span(FS) 7kPa 60 80 100
10kPa 40 50 70
Temp. characters
Operation Temp.(℃)2 -40 125
Compensation Temp(℃) 0 50
Zero Temp.
7kPa ±0.3 ±0.75
10kPa ±0.5 ±1.0
Span Temp. error(%FS)3 ±0.5 ±0.75
Thermal hysteresis(%FS) 0.1
Long term Stability
Zero (±%FS annual) 0.2 0.3
Span (±%FS annual) 0.1 0.2
Supply Current 0.5mA 1.5mA 2mA
Input Resistance 2.0kΩ 5.5kΩ
Output Resistance 3.0kΩ 6.0kΩ
Load Resistance4 5MΩ
Insulation Resistance(100V)5 100MΩ
Pressure overload
Pressure burst 5X
Pressure Media Liquids and Gases compatible with 316L Stainless Steel and NBR(O-ring)

1. Best fit straight line
2. Maximum temperature range for product with standard cable is -40°C to +105°C
3. Over the compensated temperature range with respect to 25°C
4. Load resistance to reduce measurement errors due to output loading
5. Between case and sensing element

Model Description
AC11 Diameter 19mm O Ring mounting
Code Power Supply
C Constant Current
Code Pressure Range
7K 0-7kPa
10K 0-10kPa
XX Special
Code Pressure Reference
G Vent Gauge Pressure(W/O vent tube as default)
GT Vent Gauge Pressure(With vent tube )
Code Electrical Connection
1 Connect Pins
2 Ribbon Cable(90mm as default)
Example: X Special
AC11 C 7K GT 1 Model:AC11C-7K-GT1
Dia 19mm  Current Supply 0-7kPa Gage w tube Pins

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