AC13 flush diaphragm pressure 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 sensor was welded in front end of a fitting (M20X1.5 or G1/2 made by Stainless Steel 316L).
Each sensor was strictly temperature compensated for both zero and span.


* Low cost OEM
* Pressure range:0-40Kpa…7Mpa
* Wide operable temperature range -40-125℃
* Compatible with corrosive media
* Standard mounting size
* Typical output:0-100mV


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

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Flush Diaphragm Pressure Sensor

Specifications of current excitation(1.5mA, 25℃)

Parameters Min. Typical Max.
Non-Linearity1 40Kpa ±0.20 ±0.30
>40Kpa ±0.10 ±0.20
Hysteresis ±0.05 ±0.1
Repeatibility ±0.05 ±0.1
Zero2 -5 ±1 5
Span(FS) 70
Temp. characters
 Operation Temp.(℃)3 -40 125
Compensation Temp(℃) 40Kpa 0 50
≥100Kpa -10 70
Zero Temp.error(%FS) ±0.75 ±1.0
Span Temp. error(%FS)4 ±0.75 ±1.0
Thermal hysteresis(%FS) 0.1
Long term Stability
Zero (±%FS annual) 0.2
Span (±%FS annual) 0.1
Supply Current 0.5mA 1.5mA 2mA
Input Resistance 2kΩ 2.5kΩ 3kΩ
Output Resistance 2.5kΩ 3kΩ 3.7kΩ
Load Resistance5 5MΩ
Insulation Resistance(100V)6 100MΩ
Pressure Range 0-40Kpa…7Mpa
≤4Mpa 2X
7Mpa 1.5X
Pressure Media Liquids and Gases compatible with 316L Stainless Steel

1. Best fit straight line
2. Measured at vacuum for absolute (A), ambient for gage (G)
3. Maximum temperature range for product with standard cable is -20°C to +105°C
4. Over the compensated temperature range with respect to 25°C
5. Load resistance to reduce measurement errors due to output loading
6. Between case and sensing element

Model Description
AC13 Flush Diaphragm sensor(SS 316L fitting)
Code Power Supply
C Constant Current
Code Pressure Range Gauge Absolute
40K 0-40Kpa *
100K 0-100Kpa * *
160K 0-160Kpa * *
400K 0-400Kpa * *
600K 0-600Kpa * *
1M 0-1Mpa * *
1.6M 0-1.6Mpa * *
2.5M 0-2.5Mpa * *
4M 0-4Mpa * *
7M 0-7Mpa * *
XX Special
Code Pressure Reference
G Vent Gauge Pressure(W/O vent tube as default)
GT Vent Gauge Pressure(With vent tube )
A Absolute Pressure
S Sealed Gage
Code Fitting
1 M20X1.5(Stainless Steel 316L)
2 G1/2(Stainless Steel 316L)
Example: X Special
AC13 C 600K G 1
Model  Current Supply 0-600Kpa Vent Gauge M20X1.5(SS 316L) AC13C-600K-G1
Remark: 1. Can provide vacuum test sensor of vent gauge, need consulted with factory
2. Can provide constant voltage sensor as required(Specification refer to A11 series)

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