Nanjing Wotian Technology Co., Ltd.

Pressure sensor manufacturing for 20 years.

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  • Piezoresistive silicon Pressure Transmitter PCM400
  • Piezoresistive silicon Pressure Transmitter PCM400
  • Piezoresistive silicon Pressure Transmitter PCM400
  • Piezoresistive silicon Pressure Transmitter PCM400

Piezoresistive silicon Pressure Transmitter PCM400

Product overview

PCM400 pressure transmitter uses a high performance, high stability OEM pressure sensor as the signal measuring element. The sensor signal is converted into standard signal transmission through special signal processing. After long-term aging and stability screening, the product performance is stable. It can be applied to the harsh environment of the open field, and meanwhile ensures the field pressure display, with zero point and full span transferable.


Features

High performance diffuse piezoresistive silicon sensor adopted

Used for the pressure measurement for multiple kinds of media such as gas, liquid etc.

Wide pressure ranges

Optional digital display

Optional multiple kinds of output signals 


Applications and industries

Industrial field control

Oil field

Heavy industry

Chemical industry

Gas pipe network

Water supply pipe network


Product Parameters

Performance parameters

Pressure range

-100kPa…0~20kPa…100MPa

Pressure reference

Gauge pressure, Absolute pressure, Sealed gauge pressure

Supply & output

Supply:18-36V;Output:4-20mA

Supply:12-36V;Output:4-20mA with display;

Operating temp.

-20~85 

Medium temp.

-20~85

Storage temp.

-40~85

Zero temp. coefficient

Range>35kPa: ± 1.5% FS (@ -10 ~70 )

Range 35kPa: ± 3% FS (@ 0 ~60 )

Performance parameters (cont.)

Span temp. coefficient

Range>35kPa: ± 1.5% FS (@ -10 ~70 )

Range 35kPa: ± 3% FS (@ 0 ~60 )

Overload pressure

150%FS~300%FS

Mechanical vibration

20g (20~5000Hz)

Shock

20g /11ms

Comprehensive accuracy

±0.5%FS

Insulation

100MΩ/250VDC

Response time

≤100ms (Up to 90%FS)

Long-term stability

±0.2%FS/year  

EMC surge

(IEC61000-4-5) 2kV

EMC static

(IEC61000-4-2) contact discharge 8kV, air discharge 15kV

Protection grade

IP65

Ex-proof grade

Intrinsically safe ex-proof ExiaⅡCT6

Material

Low copper aluminum alloy for shell, 316L for isolation diaphragm

Medium compatibility

All the media compatible with stainless steel 316L


Production process

PCM400 Pressure Transmitter


                                                           Testing Equipment


Φ19mm Piezoresistive Silicon Pressure Sensor PC10PΦ19mm Piezoresistive Silicon Pressure Sensor PC10P

Φ19mm Piezoresistive Silicon Pressure Sensor PC10PΦ19mm Piezoresistive Silicon Pressure Sensor PC10P

Certificate

PCM400 Pressure Transmitter

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 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.