1、 Instrument Introduction

AHS-7890Type BThe automatic headspace sampler is launched by our company to facilitate the experimental requirements of more usersofA product withSix way valverationringThe Injection TechnologyHeadspace sampling device.

2、 InstrumentCharacteristics and main functions of

1. Heating and temperature control of metal body, with high temperature control accuracy and small gradient；

2. The pre sample area makes it easier for personnel to place and sample samples;

3. Microcomputer programControl, the main functions are:

⑴ Method parameter settings, real-time working status, and running time;

⑵Sample areaSample injectionvalveSystem andsampletransmissionManage, all three channelsaloneHeating and temperature control;

⑶set upControl program,Press the run button to automatically complete the entire sample analysis；

⑷canstorage9 methods,convenientCall at any time, achieving fast startup and analysis;

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, there is no need forAny modifications or changes to the GC instrument can be used for headspace injection analysis.Also optionalUse the original instrument carrier gas;

5. Automatically achieve pressurization, sampling, injection, analysis, and post analysis blowback through time programmingcleanOther functions;

6. Sample transmissiontransportPipeAnd the injection valveThere is an automatic blowback function, which avoids cross sampling of different samplessewageDyeing;

7. In order to facilitate the use of imported gas chromatographs, this instrument is also equipped with dedicated interfaces for various imported instruments, which are easy to connect;

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

9.The injection needle is easy to replace and can be connected to all models at home and abroadGCInjection port.

IIIAHS-7890B-type automaticHeadspace injectionimplement（Quantitative tubePressure balanceMain techniques for sample injectionparameter

1. Temperature control range in the sample area:

room temperature—260 ℃ can be set in increments of 1 ℃ Heating power approximately400W；

2. Temperature control range of valve injection system:

room temperature—18Heating power of approximately 60W is set at 0 ℃ in increments of 1 ℃;

3. Temperature control range of sample transfer pipeline:

room temperature—20Heating power of approximately 40W is set at 0 ℃ 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:12One;

7. Headspace bottle specifications: Optional20ml 、10ml（50ml And otherSpecifications can be customized);

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

9. Injection volume(Quantitative tube)：1ml (optional 0.5ml, 2ml, 5ml)；

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

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

12.Effective size of the instrument:400×200×380mm³；

13.Weight of the instrument: approximately15kg。