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Differential pressure transmitter
Key words:
Differential pressure transmitter
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Product Details
The intelligent differential pressure transmitter's central sensing unit uses globally leading high-precision pressure sensor diaphragm and bellows technology and packaging processes. The pressure sensor diaphragm and bellows are located at the top of the metal body, away from the media contact surface, achieving mechanical and thermal isolation; the glass-sintered integral sensor leads achieve high-strength electrical insulation from the metal substrate, improving the flexibility and transient voltage protection capability of the electronic circuit.
The circuit design adopts a modular design with a microprocessor as the core and assisted by advanced digital isolation technology, giving the instrument extremely high anti-interference and stability. Using the Hart protocol for communication, it can be remotely operated through a Hart hand-held device or a computer with Hart software installed to complete the configuration of measurement information. At the same time, it uses digital compensation technology and compensates the transmitter through a built-in temperature sensor, improving measurement accuracy, reducing temperature drift, and having the characteristics of good long-term stability and high reliability. The most user-friendly infrared wireless setting and one-button zeroing function meet the safety operation requirements of dangerous environments, making it very convenient to perform quick menu operations and complete all parameter settings, comprehensively improving the performance of the transmitter.
⑴ Measurement range: 0～3.5kPa～10kPa～50kPa～100kPa～500kPa, 0～1MPa～3MPa～10MPa～21MPa～40MPa～70MPa～120MPa～160MPa～200MPa, 0～104kPa (absolute pressure), 0～1MPa (absolute pressure), 0～3MPa (absolute pressure), 0～10MPa (absolute pressure), etc. Various measurement ranges are available, and production and supply can be customized according to actual order requirements;
⑵ Accuracy grade: ±0.025%FS, ±0.05%FS, ±0.075%FS, ±0.1%FS, ±0.2%FS, ±0.5%FS, etc. Multiple accuracy grades (precision grades) are optional;
⑶ Uses LCD liquid crystal display; OLED display can be used at ultra-low temperatures, supporting normal display of the LCD screen below -40℃; with configuration buttons;
⑷ Has 4～20mA signal output; multiple communication protocols are optional, supporting HART, MODBUS, FF, PROFIBUS-DP/PA, etc.; with RS485 output;
⑸ Has wireless communication function, supporting ZigBee, LoRa, 4G, NB-IOT, WIA-PA and other wireless communication protocols;
⑹ Diaphragm material: 316/316L stainless steel, gold-plated stainless steel, Hastelloy C-276, titanium, tantalum, zirconium, and Monel and other metal materials;
⑺ Maximum allowable process temperature: 600℃; Minimum allowable process temperature: -110℃;
⑻ Explosion-proof mark: Exdb Ⅱ C T6 Gb;
⑼ Protection grade: IP66, IP68 are both satisfied;
⑽ The instrument has a self-diagnosis function;
⑾ Stability: Differential pressure collection is accurate and reliable, communication is stable and reliable, the system has an automatic recovery function in case of abnormality, and the service life of the differential pressure transmitter itself is not less than 10 years.
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Tianjin Wanzhong Technology Co., Ltd.
landline/fax:022-25939847
E-mail:tjwzkj@tjwzkj.com
Headquarters: Building 7, No.92, Nanhuan Road, Xianshuigu Town, Jinnan District, Tianjin
Division: 200 m north of Shuangfeng Community, Xiweicauseway, Haibin Street, Binhai New Area, Tianjin
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