Liquid Level Transmitter and Sensor
The measurement of water or liquid level using hydrostatic equilibrium system is an important application of pressure sensors. The high-sensitivity silicon piezoresistive sensitive element fabricated with micromachining technology is the critical component of the liquid level transmitter, supported with the special cable provided with an air tube as well as special water-tightness technology, which not only ensures the water tightness of immersion transducers, but also makes the reference pressure chamber connect with the ambient atmosphere, so as to attain accurate measurement results and excellent stability. JC621 liquid level transmitter adopts the internationally advanced dry ceramic capacitive sensor or temperature-compensating isolation diaphragm diffused silicon pressure sensor as a sensing element to greatly enhance operating performance of the product. It can be extensively used for the measurement and control of water and liquid levels in petroleum, chemical, power generation plant, urban water supply & drainage and hydrologic exploration fields, etc..
JC621R anti-corrosive liquid level transmitter is specially designed for measuring sea water level and viscous & corrosive liquid level by completely using the latest state-of-the-art technology. The use of titanium alloy large flush-diaphragm sensors, advanced manufacturing and encapsulating techniques, as well as high-accuracy electronic elements has greatly enhanced service life and comprehensive performance of the product. The use of internationally state-of-the-art ceramic capacitive sensors, dry pressure measuring technology with intermediate liquid, thick-film electronic technology, surface mount technology (SMT) and PFM signal transmission technology has given full play to technical advantages of ceramic capacitive sensors, with strong corrosion, overloading and impact resistance capabilities, high stability, and quite high measuring accuracy. This series product can be extensively used in many measurement and control fields of such corrosive and viscous liquid levels as sea water level.
JC621F anti-lightning liquid level transmitter is used to measure the liquid level using the principle that the liquid static pressure is directly proportionate to the liquid height. By use of foreign advanced silicon piezoresistive sensitive elements, supported with patented lightning protection devices, this series of products is specially designed for thunderous areas in Southern China, and is applicable for liquid level measurement of rivers, lakes, reservoirs and head water tanks, particularly of the hydrology and water conservancy of strong thunderous areas in Southern China and high mountain regions in Northern China. It has been successfully applied in many hydrographic industries in China.
Anti-corrosive Pressure Transmitter and Sensor
JC650 anti-corrosive pressure transmitter / sensor adopts foreign high-performance anti-corrosive tantalum diaphragm force-sensing chip, supported with high-precision electronic element. It is assembled through strict process flow. Featured by strong corrosive and wear resistance etc, this series of product has very well solved the pressure measurement problems of strong and weak corrosive gas or liquid under domestic special applications.This series of pressure transducer can be widely used in petroleum, chemical, metallurgical, electric power, environmental protection and other fields to automatically measure and control the gauge pressure, absolute pressure and negative pressure of corrosive gas, liquid, and vapor.


Vacuum / Absolute Pressure Transmitter
As a new series product specially used for vacuum measurement and control, JC627 vacuum pressure transmitter has completely solved the problem of difficult vacuum measurement. This series product has three specifications, i.e. JC627G negative pressure transmitter, JC627A absolute pressure transmitter and JC627CA capacitor thin-film absolute pressure transmitter, which have widely been used in such fields as pharmaceutical, medical equipment, airspace and aerospace, scientific research, leakage detection and completed automation equipment fields.
By use of a mono-crystalline silicon thick-film sensor, JC627G negative pressure transmitter is equipped with a high-accuracy signal processing circuit, with stable and reliable performance, which has solved such disadvantages of domestic diffused silicon-type negative pressure vacuum products as unstable signal and short service life. Normal ranges include 0 ~ 100KPa and 0 ~ 50KPa, etc..
JC627A absolute pressure transmitter adopts such advanced foreign new high technologies as absolute pressure chips, temperature automatic compensation, and normalized circuit debugging etc., to expand the absolute pressure range to 5KPa at the minimum, and to greatly enhance the overall accuracy of the product. Characterized by advanced technology, superior performance, reliable quality and small volume, this product has quite obvious advantages in high cost performance by comparison with domestic similar absolute pressure products.
JC627CA capacitor thin-membrane absolute pressure transmitter is a vacuum pressure gauge made in China through the introduction of foreign capacitor thin-film gauge technology and internationally advanced calibration equipment. This product works by the capacitance changing principle. Its minimum range may be up to 0.02MPa ~ 200MPa absolute pressure, and its detection won't be influenced by the type and component of the medium to be detected. Its output of standard electric signals can be remotely transmitted, to facilitate intelligent control of microprocessors. Therefore, it is ideal for the measurement of low vacuum pressure.
High-frequency Dynamic Pressure Transmitter
JC90 high-frequency dynamic pressure transmitter is designed and manufactured by the company using special technology. This sensor is designed and manufactured by advanced MEMS technology. Three-dimensional integrated double-sided silicon piezoresistive pressure sensitive components through the ion implantation, fine lithography technology of the Wheatstone bridge, through silicon-silicon bonding technology, inverted V-slot design to make products with high sensitivity and dynamic characteristics. This principle design ensures the dynamic characteristics of the natural frequency of 500KHz and the measurement stability of the product, followed by the special high-frequency digital calibration circuit, which can convert the change of the pressure amount into a linear corresponding standard electrical signal, such as 4-20mA, 0-5V, etc., while ensuring the accuracy of the measurement.
JC91 is a micro pressure sensor for measuring dynamic and static pressure integrated transmission output. It is suitable for applications where the installation space is limited or the weight of the sensor is light. The sensor of the JC91 micro-miniature pressure sensor and transmitter are made of a fully temperature-compensated Wheatstone bridge diffused on a highly stable micromachined silicon strained substrate, so the product guarantees good performance, the sensor body structure is compact, the outer casing can be made of titanium material, the weight without cable is less than 52g, and the G3/8 flat membrane design choices ensure the dynamic frequency response of 3KHz. The conventional small thread pressure can also reach the dynamic characteristic index of 1KHz, has a wide range of application scenarios, cost-effective.


Digital Pressure Gauges and Meters
Specially designed for high-end supporting high-standard customers, and developed and manufactured jointly by a foreign company and us, intelligent digital pressure gauge serves as a pressure measurement instrument controlled by a high-accuracy microprocessor, which utilizes the low-power signal processor to send pressure signal to the microprocessor. The pressure sensor adopted is Jiucheng made high-accuracy and high-stability product that is compatible with electric devices of the intelligent pressure gauge.This intelligent digital pressure gauge is equipped with a large-size LCD display and high-brightness LED digital display, with such functions as zero clearing, backlight, startup & shutdown, unit switching and low voltage alarm.
Digital Pressure Switchs and Controllers
JC418 hydraulic digital pressure controller switch is specially designed for high-end supporting high-standard customers. It is a high-precision microprocessor-controlled pressure measuring instrument developed and manufactured by our company. The high-precision signal processor sends the pressure signal to the microprocessor. The pressure sensor used is a high-precision, high-stability product compatible with intelligent pressure switch electronic equipment.



Integrated Temperature Transmitter / Sensor 
JC100 series of industrial thermal resistor, as a temperature measurement sensor, is usually used together with temperature transducer, regulator and display instrument to form a process control system for direct measurement or control of the temperature of liquid, vapor and gas media as well as solid surface within -200ºC~500ºC in various production processes. The thermal resistor measures temperature by using the characteristic that the resistance itself changes with the change of temperature of substance. When temperature gradient exists in the measured medium, the temperature measured is the average temperature of the medium where temperature-sensing element is located. Although the appearance of all thermal resistors varies widely, their basic structure is roughly similar, generally including such major components as temperature-sensing element, insulation casing, protective tube and junction box.
Differential Pressure Transmitter
Designed with high-quality components from a foreign company, JC630 micro differential pressure / air pressure transmitter adopts the circuit of normalized design and assembly process as well as unique sensor stress isolation technology, to convert the differential pressure signal of the measured medium into 4~20mA or 1~5V DC standard signal through temperature compensation and high-stability amplification process. High-quality sensor, circuit of normalized design, superb encapsulation technology as well as improved assembling process ensure superior quality and best performance of this product. This series product is specially designed for industrial and civil OEM customers, for which new cost performance standard has been established.
JC631 differential pressure transmitter adopts foreign-made differential pressure sensitive chips and special transducer integrated circuits as well as high-performance keycomponents and strict production process to ensure that this series product features superior performance, small dimensions and easy installation. Therefore, it is the optimum choice for micro differential pressure, flow field, flow rate, and flow measurement.
JC3051 intelligent differential pressure transmitter is a new type of instrument researched and developed by our company according to international advanced technology combined with many domestic technologies. This instrument adopts micro-processing technology for temperature characteristic and non-linear compensation, thus having greatly enhanced the measurement accuracy of the instrument, improved the temperature characteristic and expanded the turndown ratio. Besides, intelligent functions can be added, which further meets the requirements of high reliability and high stability of the instrument at the industrial sites. The adoption of digital technology in the capacitive pressure / differential pressure transducer not only ensures high reliability of the instrument and other superior performance, but also realizes the remote digital connection between the intelligent instrument and the control room to ensure rapid and reliable communication. The control room can remotely enquire into or make a real-time configuration of the transducer. The sensitive elements of this intelligent transducer are the same as those of general JC1151 series of capacitive transducers and featured by stability and reliability.


Compact Pressure Transmitter and Sensor 
JC624 compact pressure transmitter has features of anti-corrosion, anti-wear, shock resistance and vibration resistance. Its anti-overload capacity is over 10 times of the range, completely solved poor overload in small range of other sensors. In addition to general ranges of normal sensors, its most outstanding characteristic is the positive and negative gauge pressure function. JC624 compact pressure transmitter is a civil and industrial product with large consumption and low costs, for which a new standard of cost performance has been established. This series of products is widely used for pneumatic and hydraulic detection even in very harsh medium environment such as sewage, vapor, slight corrosive liquid and gas.
High-temperature Pressure Transmitter / Sensor 
For general piezoresistive pressure sensor, the four force-sensing resistors of its sensitive Wheatstone bridge for control and measuring are manufactured using IC technology. The resistors are isolated from one another with PN junction. The highest operating temperature is only 125ºC due to temperature resistant limitation of the PN junction. However, the performance of sensor has greatly been deteriorated after the temperature is above 100ºC because reverse current leakage of the PN junction rises with the exponent of the temperature, which limits the temperature range available for the conventional piezoresistive sensor. Utilization of thick film technology to make force-sensing resistor can expand the operating temperature up to 125ºC; utilization of multi-crystalline silicon SOI technology to make force- sensing resistor can expand the operating temperature up to 150ºC; utilization of the traditional SOS technology and advanced SOI technology can expand the operating temperature up to 180°C-350°C. Utilization of the latest β-phase high- temperature force -sensing material SiC, combined with SOI technology can expand the operating temperature up to 450ºC ~ 850ºC. JC680 high-temperature pressure transmitter / sensor is assembled through strict process using internationally advanced sensor, supported with high-precision electronic elements. 


Hygienic Flat-diaphragm Pressure Transmitter 
JC670 hygienic flat-diaphragm pressure transmitter adopts imported high-accuracy and high-stability pressure sensor module to covert the absolute pressure or the gauge pressure of the measured medium into 4 ~ 20mA, 1 ~ 5V / 0 ~ 5V standard electrical signal through high-reliability amplification circuit and precise temperature compensation. High-quality sensor and encapsulation technology of full seal welding as well as improved assembling process have ensured excellent quality and best performance of this series of product. 
Industrial Pressure Transmitter / Sensor 
JC625 industrial pressure transmitter is provided with foreign advanced sensor force-sensitive chips, supported with high-accuracy electronic elements, and assembled through strict process flow. This series of products is provided with special terminals, shield cables, pointers and digital display, with easy installation, calibration and maintenance. It can be extensively used in many industrial fields such as petroleum, chemical, electric power, metallurgical, pharmaceutical and food industry fields etc.. Thus, this product is considered ideal for upgrading conventional pressure gauges and pressure transducers, and also serves as an ideal instrument for pressure measurement and control in industrial automation field.


General-purpose Pressure Transmitter 
Specially designed for industrial and civil OEM customers, JC620 general-purpose pressure transmitter has been researched, developed and manufactured by our company. By introducing European state-of-the-art sensor technology, strict product quality standard and rationalized product manufacturing technology, we have established the new cost performance standard for this type of products. 
JC620 general-purpose pressure transmitter has been produced with proprietary technology. Imported silicon sensitive elements as well as circuits and assembly technology designed in a normalized way to guarantee the advancement, practicality and quality stability of our products. This standard product may extensively be used in various places. Under the precondition of ensuring quantity and application, Our design team can re-design or improve the product to meet special requirements arising during application according to users' specific requirements. 
High-accuracy Pressure Transmitter 
JC622 high-accuracy pressure transmitter is a new pressure transducer jointly developed, researched and produced by our company and a foreign company. This series of products adopts high-accuracy force-sensitive chips imported from Germany as central sensing elements, as well as such new high and new technology as temperature-self-compensation and normalized circuit commissioning etc., thus greatly enhancing their overall accuracy. With advanced technology, excellent performance and reliable quality, this product is of small volume and light weight, and easy to install and use, and can be extensively used in such scientific research and production fields as airspace and aerospace, petroleum, chemical industry, metallurgy, electric power, building material, hydrogeology, medical treatment and  environmental protection etc..  It can realize high-accuracy measurement of fluid pressure and liquid level.

More Pressure Sensor / Transmitter