Xi'an Dehou Electronic Technology Co., Ltd.
Xi'an Dehou Electronic Technology Co., Ltd.
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Stable Output High Sensitivity Pressure Transmitter NP93420 Series High Resolution Pressure Measurement Applications
Explosion Proof Pressure Transmitter NP93420 Series Reliable Sealing Anti Corrosion Series Working Principle
NP93420 series diffused silicon pressure sensor is a new generation of force sensor produced by using imported chips, careful structural design, signal processing and assembly, and testing in strict accordance with national standards. This series of products has stable output, high sensitivity and precision, good temperature characteristics and strong anti-interference ability.
NP93420 series uses semiconductor piezoresistive effect and micromachining technology to make Wheatstone bridge with photolithography, diffusion and other semiconductor processes on specific products of single silicon wafer to form a sensitive diaphragm. When subjected to external force, it will change slightly, and the resistivity will change, so that the resistance of bridge arms will change (one pair becomes larger and one pair becomes smaller). After computer temperature compensation, laser resistance adjustment The pressure transmitter with standard output signal is produced by signal amplification and other processing means and strict assembly, detection, calibration and other processes.
Pressure Transmitter NP93420 Series Design Feature
◎ The output is stable, the sensitivity is high, and the influence of interference, noise and other factors is relatively small. The corresponding cost of the amplifier circuit is reduced, and the resolution is greatly improved.
◎ Special V/I integrated circuit has few peripheral components, high reliability, simple and easy maintenance, small volume, light weight, and extremely convenient installation and debugging.
◎ Aluminum alloy die-casting shell, three end isolation, static plastic spraying protective layer, solid and durable.
4-20mA DC two-wire signal transmission, with strong anti-interference ability and long transmission distance.
LED, LCD and pointer are three kinds of indicator heads, which are very convenient for field reading. It can be used to measure viscous, crystalline and corrosive media.
◎ Diffusion silicon pressure transmitter is used in dangerous and explosive fields. The product is characterized by low current, low voltage, low power consumption, etc
◎ Safe explosion-proof products with explosion-proof certificates.
◎ The stainless steel material and special protective structure, as well as a series of protective measures such as lightning protection, anti-interference, over-voltage and over-current protection of the amplification circuit, have improved the ability of reliable sealing, anti-corrosion and anti harsh working environment, which is completely suitable for the needs of general industrial field measurement and control.
Pressure Transmitter NP93420 Series Technical Parameter
| Typical Application | Liquid,Gas,Vapor |
| Product Model | NP93420 |
| Diaphragm material | 316L (optional) |
| Measuring Range | Surface pressure 0~5KPa~3.5MPa Sealing pressure 0~7MPa~100MP Absolute pressure0~20KPa~35MPa Negative pressure0~0.1MPa~2MPa |
| Measuring Accuracy | Level 0.1, Level 0.2 |
| Ambient Temperature | -40 ~ +85°C |
| Process Temperature | -25~+125 ℃ (>+125 ℃ can be customized) |
| Allowable Overload | less than or equal to twice the rated range |
| Long Term Stability | <+0.2% FS/year |
| Influence of Power Supply | temperature drift within 0~+70 ℃: 1+0.2% FS |
| Vibration Impact | <+0.02% BFSL (in any direction, when the vibration frequency is 20~200Hz |
| Impact Effect | <+0.02% BFSL (in any direction, when 100G impacts 1LMS) |
| Process Connection | Thread, Flange (optional) |
| Damping Time | 0.1~16s adjustable |
| Supply Power | (12-36) VDC (± 30%) |
| Signal Output | 4-20 mA /HART/RS485/Modbus (LCD optional) |
| Protection Grade | IP65 |
| Explosion-proof Grade | Exia II CT6 Ga (details in certificate) |
※ Remarks: products can be customized and designed according to the specific requirements
Pressure Transmitter NP93420 Series Product Applications
★ Petroleum/petrochemical/chemical industry: It is matched with throttling device to provide accurate flow measurement and control. It can measure the pressure and liquid level of pipes and storage tanks.
★ Electric power/city gas/other company undertakings: places requiring high stability and high precision measurement.
★ Pulp and paper making: It is used in places where chemical resistance and corrosion resistance are required.
★ Steel/nonferrous metals/ceramics: used in places where high stability and high precision are required for furnace pressure measurement.
★ Machinery/shipbuilding: It is used in places where stable measurement is required under strict control (temperature, humidity, etc.) and high-precision conditions.