AHS-7900A fully automatic headspace sampler

1、 Instrument Introduction

The AHS-7900A fully automatic headspace sampler is a new generation of fully automatic headspace sampler developed and launched by Beijing Zhongyi Yusheng Technology Co., Ltd. It has a fully automated design, touch screen display, beautiful and elegant appearance, and more convenient operation.

2、 Characteristics and main functions of the instrument

1. It can run automatically-20 samples, no need for personnel on duty;

2. Power on self-test, fault alarm and prompt, automatic positioning and calibration of sample tray to prevent bottle jamming caused by misalignment;

3. Microcomputer program control, with main functions including:

⑴ Method parameter setting, real-time animation display of working status, and running time;

⑵ The sample area, injection valve, and sample transfer tube are all separately heated and temperature controlled;

⑶ Set up the analysis program and press the run button to automatically complete the analysis of all samples;

⑷ It has multiple expansion functions: dynamic headspace, purge and capture, low-temperature cold trap;

⑸ The GC and chromatographic data processing workstations can be started synchronously, and the device can also be started using external programs;

4. Equipped with an external carrier gas regulation system, the GC instrument can be used for headspace sampling analysis without any modifications or changes. The original instrument carrier gas can also be used;

5. Through time programming, automatic functions such as pressurization, sampling, injection, analysis, and post analysis blowback cleaning can be achieved;

6. Adopting pressure equilibrium injection technology, the peak shape of headspace injection is narrow and the repeatability is good;

7. The sample transfer tube and injection valve have automatic blowback function, which avoids cross contamination of different samples;

8. In order to make it more convenient and accurate to use with imported gas chromatographs, this instrument is also equipped with dedicated interfaces for various imported instruments, which are easy to connect;

9. For active substance analysis, an elastic quartz tube can be selected as the sample transfer tube;

10. The injection volume can be adjusted at any time according to the concentration of the sample to be analyzed by the customer;

11. The injection needle is easy to replace and can be connected to all models of GC injection ports at home and abroad.

IIIMain technical parameters of AHS-7900A fully automatic headspace sampler (pressure balanced injection)

1. Temperature control range in the sample area:

room temperatureHeating power of approximately 400W is set at 260 ℃ in increments of 1 ℃;

2. Temperature control range of valve injection system:

room temperatureHeating power of approximately 60W is set at 220 ℃ in increments of 1 ℃;

3. Temperature control range of sample transfer pipeline:

room temperature- Heating power of approximately 40W is set at 220 ℃ in increments of 1 ℃;

（For operational safety, the temperature control of the transmission pipeline adopts low-voltage power supply）

4. Temperature control accuracy:<± 0.1 ℃;

5. Temperature control gradient:<± 0.1 ℃;

6. Headspace bottle workstation: 20 people;

7. Headspace bottle specifications: 10ml, 20ml optional;

8. Repeatability: RSD ≤ 1.5% (ethanol in 200ppm water, N=5）；

9. Injection volume control mode: Injection time and pressure control the injection volume;

10. Injection pressure range: 0-0.4Mpa (continuously adjustable);

11. Backblowing cleaning flow rate: 0-400ml/min (continuously adjustable);

12. Effective dimensions of the instrument: 450 × 360 × 510mm³；

13. Weight of the instrument: approximately 26kg.