Qianjiang gas chromatographIntroduction:
Product Name: Gas chromatograph
Specification and model: GC1690DJJ (Cheng Sheng Dual SPL FID FPD)
Manufacturer: Hangzhou Jiedao
Host Introduction: The GC1690 series high-performance laboratory analytical instrument is introduced to the market by Jiedao Company. According to usage needs, a combination of hydrogen flame ionization (FID) and thermal conductivity (TCD) detectors can be selected, which can detect boiling points of 399. Perform constant, trace, and even trace analysis on organic, inorganic, and gas substances below C. Widely used in fields such as petroleum, chemical, fertilizer, pharmaceuticals, electricity, food, fermentation, environmental protection, and metallurgy.
QianjiangBasic configuration: GC1690DJJ (Cheng Sheng Dual SPL FID FPD)
column oven
Taking into account the thermal radiation generated by the gasification chamber or detector heating, the high-performance large column temperature box is designed as an upright structure, with a maximum operating temperature of 420 ℃ and a temperature control range of 7 ℃~420 ℃. It has a 5-stage programmed temperature rise, automatic rear opening door, and can set a height operating temperature within 420 ℃. The fixed 450 ℃ independent protection circuit has a dual protection structure.
injector
1. Sample filling on the column
2. Split/non split injection
3. Large caliber capillary WBC injection
4. Filling column vaporization injection
5. Six way valve air inlet style
Qianjiang：

*1. Over temperature protection: When the actual temperature of each hot zone exceeds the set maximum value, the over temperature protection device works, automatically cutting off the power supply of each heating zone of the instrument, and sounding an alarm to avoid accidents.

*2. Overcurrent protection: When the TCD detector is working, if the current is set too high or the TCD resistance suddenly increases, the overcurrent protection device will work, automatically cut off the TCD bridge current, and at the same time alarm and display OVER TCD to protect the tungsten wire from being burned out (if the user starts TCD without passing the load gas due to operational errors, the device can also automatically cut off the power to protect the tungsten wire). Amplification circuits can also be added to increase sensitivity.
*3. Crash protection: When the instrument is in operation, it can automatically cut off the power and sound an alarm in case of short circuit or open circuit of the thermistor in each heating zone, grounding of the heating wire, or system crash of the microcomputer operating system, to avoid accidents caused by continuing to work. The above three protection functions can make your analysis work safer and more reassuring.
Six major temperature controls
The GC1690 model is capable of six temperature controls, with AUX1 controlling the external heating device, column temperature, and AUX1 with a five step programmed temperature rise.
Pneumatic control
The gas path controller adopts an external type, with capillary gas path box and gas combustion assisting gas path box placed independently. The airflow ratio adjustment is intuitive and easy to understand, and the control is flexible. Moreover, once a certain gas path problem occurs, it can be immediately switched, which has no impact on the operation of the host and is easy to maintain.
Low noise
Each fan blade inside the host is molded in one go using molds, with good symmetry to avoid imbalance and noise during operation.
Flexible configuration
The capillary injector is independent and can be configured with dual capillary injectors and dual amplification plates according to user requirements, allowing for the simultaneous installation of two capillary columns; Two filling columns can also be installed simultaneously; It is also possible to install both a packed column and a capillary column simultaneously; TCD, FPD, NPD, and ECD detectors can also be flexibly added on this basis to meet different analysis requirements; One instrument can be equipped with up to three types of injectors and three types of detectors.
Beautiful appearance
Using a vertical column box, it has a beautiful and elegant appearance, and occupies a small area, suitable for use in small laboratory spaces.
The symbol '*' indicates that the technology is domestic.