Nanjing Wotian Technology Co., Ltd.

Pressure sensor manufacturing for 20 years.

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  • Pressure Sensors PC40

Pressure Sensors PC40

Product Overview

PC40  piezoresistive silicon pressure sensor is the core

component for the manufacture of pressure sensors and

pressure transmitters. As high-performance pressure sensitive

component, PC40 can be easily amplified and assembled into

the pressure transmitters with standard signal output.

PC40 packages diffused silicon pressure sensitive die to

316L stainless steel housing. External pressure is transmitted

to pressure sensitive die through stainless steel diaphragm

and internally sealed silicon oil. Pressure sensitive die does

not directly contact with measured medium, forming all solid

structure of pressure measurement. So the product can be

applied to a variety of occasions, including harsh corrosive

medium environment.

PC40 uses O-ring for pressure seal, which is easy to

install.The company can also undertake special customization

based on the needs of users, such as pressure sensors of all

welded  structure, wide temperature compensation, high

reliability, anti-shock and anti-vibration sensors, especially for

national defense weapons and equipment.

   

Features

■ Constant current excitation

■ Imported TDK pressure die

■ Wide temperature compensation

■ Compensation board with protection against moisture

■ Φ19mm standard OEM

■ All 316L material

■ High performance, all solid, high reliability

■ 18 months warranty period

 

Uses and Industries

■ Process control systems

■ Pressure calibration instruments

■ Refrigeration equipment and

HVAC control

■ Hydraulic systems and valves

■ Level measurement

■ Biomedical instruments

■ Ships and navigation

■ Aircraft and avionics systems

■ Weaponry and Equipment


Product Parameters

Electrical performance parameters

Pressure Range

0 ~ 40kPa... 16MPa

Pressure reference

Gauge pressure, Absolute pressure, Sealed gauge pressure

Excitation

Recommended 1.5mA

Input impedance

Constant current: 2kΩ ~ 6kΩ

Electrical connection

Silicon soft wire

Compensation temp.

0° C ~ 60° C (≤70kPa)

-10 ° C ~ 70 ° C (other ranges)

Operating temp.

-40 ° C ~ 120 ° C

Storage temp.

-40 ° C ~ 120 ° C

Insulation resistance

≥ 200 m Ω / 250 VDC

Response time

≤1ms (up to 90%FS)

Measured medium

All the liquids and gases compatible with 316L

Mechanical vibration

20g (20~5000HZ)

Shock

100g /10ms

Durability

1×106(pressure cycles)

Structural performance parameters

Diaphragm material

316L

Housing material

316L

Oil filling

Silicone oil

Sealing ring

NBR or fluorine rubber

Basic parameters

Items

Condition

Min

Nominal

Max

Unit

Notes

Nonlinearity



0.2

0.5

%FS

Note (1)

Hysteresis



0.03

0.05

%FS


Repeatability



0.03

0.05

%FS


Zero output


-2

±1

2

mV


Full span output

1.5 mA

60

90

150

mV

Note (2)

Zero temp. coefficient



1

1.5

%FS

Note (3)

Sensitivity temp. coefficient 



1

1.5

%FS

Note (3)

Thermal hysteresis



0.075

0.1

%FS

Note (4)

Long-term stability


-

0.2

0.3

%FS/ year



Production process


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                                                     Testing Equipment


Φ19×14mm Oil Pressure Sensor PC10Φ19×14mm Oil Pressure Sensor PC10

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Certificate



PC10 Piezoresistive Silicon Pressure Sensor

Company profile

PCM580 Digital Pressure Gauge (Φ80mm)

Nanjing Wotian Technology Co., Ltd. was established in 2005. It is an outstanding top sensor manufacturing enterprise in Jiangning District. The company was rated as Nanjing Engineering Technology Research Center and Nanjing. Municipal Engineering Research Center, Nanjing Enterprise Technology Center, Nanjing Postdoctoral Innovation Demonstration Base; is the unit that formulated the national standards for "Silicon Piezoresistive Pressure Sensitive Chips" and "Silicone Pressure Sensors". It is the leading domestic manufacturer of pressure sensors, with core technology of diffused silicon pressure sensor pressure transmitter, level sensor and temperature sensor and existing staff 305. The annual production of pressure sensors is more than 3 million. The products have been exported to more than 70 countries and regions. Nanjing Wotian was awarded the honorary title of "Sensor Application Program Demonstration Enterprise" by the Ministry of Industry and Information Technology in 2019. "Creating value for customers" is the goal that enterprises always pursue. As leading manufacturer in the domestic pressure sensor industry, the company will revitalize China's pressure sensor business as its own responsibility, work diligently, step by step, strive to make pressure sensors better, and provide customers with cost-effective sensors.  Nanjing Wotian Technology Co., Ltd. has passed ISO9001-2015 quality management system certification and TS16949 certification for the automotive industry.


Company advantage

Mass production

We have one production center in Nanjing and one production center in Anshan with 20,000㎡plant and 170 units of production equipments. The main annual capacity of sensors is about 2,000,000 pieces.

Imported equipments

We imported 20 sets of pressure controller and 150 units of testing ovens to our production line.

Informatization management

We have the information management system of CRM, PLM, ERP, MES and DINGDING etc.

Comprehensive testing

We have our own lab and testing equipment such as lightning stroke, surging, static electricity, vibration, high-low temperature impact test and helium mass-spectrum leak detection.