High performance pressure diaphragm sensor transmitter for liquid
gas 24VDC 0.1/0.2 grade
NP93420 series diffused silicon pressure sensors are all imported
chips, after careful structural design, signal processing and
assembly, and in strict accordance with the national standards for
testing and produced a new generation of pressure sensors. The
series of products have stable output, high sensitivity and
precision, and good temperature characteristics, and strong
anti-interference ability.
working principle
NP93420 series is the use of semiconductor piezoresistive effect
and micro mechanical processing technology, in specific crystal
monocrystalline silicon slice up, made of lithography, diffusion,
and so on semiconductor technology - wheatstone bridge, form the
sensitive diaphragm, when external force is produced, the
resistivity changes, make the bridge arm resistance change (a
bigger pair of smaller) in the excitation voltage signal output,
Through computer temperature compensation, laser resistance
adjustment, signal amplification and other processing methods and
strict assembly detection, calibration and other processes, the
pressure transmitter with standard output signal is produced.
Design feature
•The output is stable, the sensitivity is high, the influence of
interference and noise is relatively small, the corresponding cost
of the amplifier circuit is reduced, and the resolution is greatly
improved.
•Special V/I integrated circuit, less peripheral devices, high
reliability, simple maintenance, easy, small size, light weight,
installation and debugging is very convenient.
•Aluminum alloy die - cast shell, three - end isolation,
electrostatic spray protective layer, durable.
•4-20mA DC two-wire signal transmission, strong anti-interference
ability, long transmission distance.
•LED, LCD, pointer three indicator head, field reading is very
convenient. It can be used to measure viscous, crystalline and
corrosive media.
•Diffused silicon pressure transmitter is used in dangerous and
explosive fields. The product has the characteristics of low
current, low voltage and low power consumption. It is an
intrinsically safe and explosion-proof product, and is equipped
with explosion-proof certificate.
•The use of stainless steel material and special protection
structure, and the amplifier circuit lightning, anti-interference,
anti-voltage, over-current and a series of protection means,
improve the reliable sealing anti-corrosion and anti-harsh working
environment ability, completely suitable for the general industrial
field measurement and control needs.
Technical parameters
| Application | liquid ,gas, steam |
| Product No. | NP-93420-IB/-IF/-IX/-IC/-IT/-IQ/-II/-III |
| Measuring range | upper limit URL |
| Gauge pressure | Sealing pressure | Absolute Pressure | Gauge pressure |
| 0~5KPa~3.5MPa | 0~7KPa~100MPa | 0~20KPa~35MPa | 0~0.1KPa~2MPa |
| Diaphragm material | 316L(Optional) |
| Accuracy grade | 0.1/0.2grade |
| Power supply | 24VDC |
| Output | 4... 20mA/HART/RS485/Modbus... |
| Environment temperature | -40~+85℃ |
| Process temperature | -25~+125℃(＞+125℃ can be customized) |
| Connection | threaded,flange(Optional) |
| Damping time | 0.1~16s adjustable |
Allow overload | ≤Rated range 2 times |
| Display | LCD(Optional) |
| Protection level | IP67 |
| Explosion-proof grade | Exia ⅡCT6 Ga,ExdⅡCT6 Gb |
