Gas chromatograph low-temperature column box temperature control system equipment

NegotiableUpdate on 05/06

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The low-temperature column box temperature control system equipment for gas chromatography is a specialized column box refrigeration and precision temperature control equipment based on liquid nitrogen ultra-low temperature control technology. It is designed specifically for the deep low-temperature, high-precision, and automated temperature control needs of gas chromatography column boxes, relying on liquid nitrogen -196 ℃ ultra-low temperature performance and intelligent control system

Product Details

Gas chromatograph low-temperature column box temperature control system equipmentIt is a specialized column box refrigeration and precision temperature control equipment based on liquid nitrogen ultra-low temperature control technology. It is designed specifically for gas chromatography column boxes to achieve deep low temperature, high precision, and automated temperature control requirements. With the ultra-low temperature characteristics of liquid nitrogen -196 ℃ and intelligent control system, it solves the problems of low-temperature separation, rapid cooling, and constant temperature stability that cannot be achieved by conventional column boxes. It is fully adapted to high-precision analysis scenarios such as light hydrocarbons, volatile components, and low-temperature sensitive compounds, providing a stable low-temperature environment guarantee for chromatographic separation.

working principle

The system uses a self pressurized liquid nitrogen tank as the cold source, combined with a low-temperature vaporizer, PLC intelligent controller, high-precision valve group, temperature/pressure/liquid level sensing module, to form a closed-loop temperature control system:

Liquid nitrogen is converted into low-temperature nitrogen gas by a vaporizer and accurately transported to the chromatographic column chamber;
The temperature probe real-time collects the actual temperature of the column box and feeds it back to the controller;
The controller adjusts the liquid nitrogen flow rate and vaporization rate through a valve group to achieve continuous adjustable output from -196 ℃ to room temperature;
Synchronize monitoring of liquid nitrogen tank level and pressure inside the tank, automatically complete liquid replenishment, pressure relief, and pressure maintenance, with no human intervention throughout the process, ensuring constant column box temperature and stable cold source supply.

core components

module	core component	Functional Description
Cold source module	Self pressurized liquid nitrogen tank (YDZ series)	Provide stable liquid nitrogen supply, support multi tank rotation, 24-hour uninterrupted liquid supply
control module	PLC controller+MCGS touch screen	Visual operation, program temperature control, parameter setting, real-time data monitoring
Execution Module	Inlet valve, vent valve, pressure regulating valve, pressure increasing valve group	Accurately adjust liquid nitrogen flow rate, pressure, and vaporization amount to achieve temperature closed-loop control
Monitoring module	Temperature sensor, pressure sensor, liquid level gauge	Real time collection of column box temperature, tank pressure, and liquid level, automatic alarm for abnormalities
Transmission Module	Low temperature vacuum pipeline, vaporizer	Stable delivery of low-temperature nitrogen to avoid cooling loss and adapt to chromatographic column box interface

technical advantage

Ultra wide low-temperature temperature control range

Realize continuous and precise adjustment from -196 ℃ to room temperature, break through the low temperature limit of conventional column boxes, meet the separation needs of light hydrocarbons, volatile organic compounds, and low-temperature sensitive samples, and adapt to various capillary columns and packed columns for low-temperature analysis.
Ultra high temperature control precision

The temperature control accuracy reaches ± 0.1 ℃, with excellent temperature stability. Environmental temperature fluctuations do not interfere with the column temperature, ensuring regular chromatographic peak shape and high reproducibility of retention time, thereby improving the accuracy of detection data.
Fully automatic unmanned operation

Support automatic liquid level monitoring, low-pressure automatic replenishment, overpressure automatic venting, and 24-hour stable operation; Program cooling and constant temperature maintenance can be set, suitable for long-term continuous chromatographic detection, without the need for manual supervision.
Modular customization adaptation

It can be flexibly modularized according to the size of the chromatographic column box, temperature control accuracy requirements, and liquid supply flow requirements, and is compatible with small laboratory chromatographs, large online chromatography systems, and various brands of gas chromatographs for renovation and upgrading.
Efficient, energy-saving, safe and reliable

High low-temperature vaporization efficiency and improved utilization of liquid nitrogen; Equipped with multiple safety protections against overheating, overpressure, leakage, and low liquid levels, it is installed and debugged on-site nationwide.

Technical specifications

Temperature control range: -196 ℃~room temperature continuously adjustable
Temperature control accuracy: ± 0.1 ℃
Cooling rate: adjustable from 0.1~20 ℃/min
Liquid nitrogen tank capacity: 100L/200L/300L optional, supports multi tank linkage
Control mode: PLC+touch screen automatic control, supports program programming
Security protection: over temperature alarm, over pressure relief, low liquid level reminder, leakage detection
Adaptation scenarios: laboratory gas chromatograph, online gas chromatography system, low-temperature chromatographic analysis device
Gas chromatograph low-temperature column box temperature control system equipment
carburetor
Self pressurized liquid nitrogen tank

Application scenarios

Laboratory precise analysis: chromatographic separation of light hydrocarbon components, volatile organic compounds, and low-temperature sensitive compounds in universities, research institutes, and testing institutions;
Industrial online detection: Low temperature control of online gas chromatography column boxes in industries such as petrochemicals, natural gas, and food processing;
Equipment upgrade and renovation: Upgrading the low-temperature performance of conventional gas chromatographs and expanding their low-temperature analysis and detection capabilities;
Standard testing scenarios: chromatographic testing projects that require low-temperature temperature control, such as environmental monitoring, drug testing, and material analysis.

flow meter

Service Guarantee

Professional customization: With 15 years of experience in ultra-low temperature equipment research and development, we can customize according to the chromatograph model, column box size, and temperature control requirements;
Door to door service: nationwide delivery, installation and commissioning, operation training;
Quality assurance: full process inspection before leaving the factory, supporting insurance logistics, reducing transportation losses;
After sales support: 24/7 technical response, regular maintenance and calibration to ensure long-term stable operation of the equipment.

This system has the core advantages of ultra-low temperature, high precision, fully automatic, and high adaptability, solving the pain points of low-temperature temperature control in gas chromatography column boxes, providing a stable, reliable, and efficient low-temperature environment for chromatographic analysis, and is an ideal supporting equipment for laboratory and industrial chromatographic detection fields.