Pусский 
Isolation Explosion-proof Pressure Sensor PCM301
Features
■ All stainless steel welded structure
■ High strength, anti-vibration
■ Exd II BT6 certified
■ -100kPa…0~10kPa…100MPa
■ Output: 4~20mA(16~36VDC)
■ IEC 61000-6-3
■ Protection: IP65
Applications
■ 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 | -100kPa…0~10kPa…100MPa | ||
Pressure reference | Gauge pressure, Absolute pressure, Sealed gauge pressure | ||
Supply & output | 4~20mA(16~36VDC) | ||
1~5V, 0~5V(12~36VDC) | |||
Accuracy | ±0.5%FS(typ.); ±1%FS(max.) | ||
Hysteresis & repeatability | ≤±0.1%FS | ||
Temp. drift | ≤±1.5%FS(@-20℃~85℃) | ||
Response time | ≤1ms(up to 90%FS) | ||
Service life | ≥10×106 pressure cycles | ||
Ambient temp. | -20℃~80℃ | ||
Medium temp. | -30℃~105℃ | ||
Storage temp. | -40℃~85℃ | ||
EMC-interference | IEC 61000-6-3 | ||
EMC-immunity | IEC 61000-6-2 | ||
Vibration resistance | ≥100MΩ/500VDC(200MΩ/250VDC) | ||
Shock | 100g(11ms) | ||
Protection | IP65 | ||
Material | 304 | ||
Max. mounting torque | 25Nm | ||
Ex-proof | ExdⅡBT6 | ||
Structure | |
Dimension In mm |
|
Application of damper |
Application
Cavitation, liquid hammer and pressure peak may occur in air or hydraulic systems with varying flow rates, such as the rapid closing of valve or the start and stop of pump. Even at relatively low operating pressures, these problems may occur at the entrance and exit.
Application of damper (cont.) |
Media condition
In the liquid containing particles, nozzle clogging may occur. The vertical mounting of pressure transmitter minimizes the risk of clogging because the flow of fluid happens in initial start only, the volume of the rear of the nozzle is fixed and the nozzle has a relatively large aperture (1.2 mm).
The effect of medium viscosity on response time is small. Even if the viscosity reaches 100 CST, the response time will not exceed 4 ms.
Pressure range selection | |||||
Pressure range code | Pressure reference | Pressure range | Overpressure | Remark | |
35k | G | 0~35kPa | 300％FS | ||
70k | G | 0~70kPa | 300％FS | ||
100k | G, A | 0~100kPa | 200％FS | ||
160k | G | 0~160kPa | 200％FS | ||
250k | G, A | 0~250kPa | 200％FS | ||
400k | G | 0~400kPa | 200％FS | ||
600k | G | 0~600kPa | 200％FS | ||
1M | S | 0~1MPa | 200％FS | ||
1.6M | S | 0~1.6MPa | 200％FS | ||
2.5M | S | 0~2.5MPa | 200％FS | ||
6M | S | 0~4MPa | 150％FS | ||
10M | S | 0~6MPa | 150％FS | ||
16M | S | 0~10MPa | 150％FS | ||
25M | S | 0~25MPa | 150％FS | ||
40M | S | 0~40MPa | 150％FS | ||
60M | S | 0~60MPa | 150％FS | ||
100M | S | 0~100MPa | 150％FS | ||
Note: G stands for gauge pressure, A, absolute pressure, S, sealed gauge pressure.
Production process
Testing Equipment
Certificate
Company profile
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 over 600. The annual production of pressure sensors is more than 4.5 million. The products have been exported to more than 80 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 25,000㎡ plant and over 1000 units of production equipments. The main annual capacity of sensors is over 4,500,000 pieces.
Imported equipments
We have imported more than 20 sets of pressure controllers for 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.
