Nanjing Wotian Technology Co., Ltd.

Pressure sensor manufacturing for 17 years.

Keywords: Nanjing WotianPressure Sensor FactoryMonocrystalline Silicon Differential Pressure SensorLevel TransmitterPressure TransmitterPressure Sensor

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  • PCM301 Isolation Explosion-proof Pressure Sensor
  • PCM301 Isolation Explosion-proof Pressure Sensor
  • PCM301 Isolation Explosion-proof Pressure Sensor

PCM301 Isolation Explosion-proof Pressure Sensor


■ All stainless steel and all welded structure

■ High strength, anti-vibration

■ CNEX certified

■ Wide measuring range to measure absolute pressure, gauge pressure and sealed gauge pressure

■ Good sealing performance and long-term stability

■ Advanced structure ensures product reliability

■ Widely used in flammable and explosive environments


■ Equipment support

■ Hydraulic and pneumatic equipment

■ CNG pipeline network

■ Compressor

■ Natural gas filling station equipment

Exd II BT6 certification flameproof pressure transmitter,China isolation explosion-proof pressure transmitter,piezoresistive silicon isolation explosion-proof pressure transmitter,CNEX transmitter

China Wotian factory flameproof pressure transmitter specially designed for explosion-proof places, adopting integrated all-welded structure and high-stability piezoresistive silicon pressure sensor, with high strength, anti-vibration, small size, good sealing performance and long-term stability

Product Parameters

Performance   parameters

Pressure   range


Pressure   reference

Gauge   pressure, Absolute pressure, Sealed gauge pressure

Supply & output


1~5V, 0~5V(12~36VDC)


±0.5%FS(typ.); ±1%FS(max.)

Hysteresis   & repeatability


Temp. drift


Response time

≤1ms(up to 90%FS)

Service   life

≥10×106   pressure cycles

Ambient temp.


Medium temp.


Storage temp.



IEC 61000-6-3


IEC   61000-6-2

Vibration   resistance








Max.   mounting torque




Production process

PCM301 Isolation Explosion-proof Pressure Transmitter


PCM301 Isolation Explosion-proof Pressure Transmitter

Company profile

PCM580 Digital Pressure Gauge (Φ80mm)

Nanjing Wotian Technology Co., Ltd. was established in 2005. It is an outstanding top sensor mkanufacturing 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 2 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.