Summary
The KSYG series pressure transmitter adopts internationally advanced sensors, combined with high-precision electronic components, and is assembled through strict manufacturing processes. Fully leveraging the technological advantages of sensors, the KSYG-K1 series pressure transmitter has excellent technical performance. It has strong overload and impact resistance, low temperature drift, high stability, and high measurement accuracy.
The pressure sensor selected for the KSYG series pressure transmitter is a fully welded stainless steel body with a solid-state pressure sensitive chip and a stainless steel isolation diaphragm. Inject silicone oil inside the steel body. The measured pressure acts on the diaphragm and is transmitted to the sensitive chip through silicone oil. The sensitive chip is connected to the transmitter's dedicated amplification circuit through wires. It utilizes the piezoresistive effect of semiconductor silicon materials to achieve the conversion of pressure and electrical signals. Due to the good linear relationship between the electrical signal output by the Wheatstone bridge on the sensitive chip and the applied pressure, accurate measurement of pressure can be achieved.
Ｍain features
◆ Strong overload and impact resistance
◆ Stability is higher than 0.1% of full scale per year
Strong anti-interference ability - waterproof, dustproof, shockproof, explosion-proof, anti-corrosion
◆ Wide applicability - The product has multiple models, various process connection forms, and various process connection materials, which can be suitable for various occasions in measurement.
◆ Easy installation: The product has a reasonable structure, small size, and light weight, and can be installed directly at any position.
Working principle
The transmitter consists of sensors and signal processing circuits. The sensor pressure sensing surface is equipped with a Wheatstone bridge, and when the pressure is increased, the resistance values of each bridge arm of the bridge change. Through the signal processing circuit, it is converted into voltage changes and ultimately converted into standard (4-20) mA signal output. The principle is shown in the figure:
Technical Parameter
Working voltage 12.5V~36V DC
Output signal 4mA~20mA (analog, two-wire system)
Measurement range: maximum relative pressure O-60MPa
Minimum O 1kPa
Absolute pressure maximum O-60MPa
Minimum O -20kPa
Negative relative pressure - O.lMPa~1MPa
Accuracy ① Accuracy level O.1, 0.2, 0.5
② Temperature impact ± 0.15% FS/lOk
③ Stability better than 0.1% FS/year
④ Location affects installation position but does not affect zero point
Allowable temperature ① Normal operating temperature -20 ℃~80 ℃
② Diaphragm -20 ℃~80 ℃ (short-term up to 130 ℃)
③ Storage temperature -20 ℃~80 ℃
④ High and low temperature type -20 ℃~150 ℃
-65℃～400℃
Relative humidity 0-98% RH
