PT-7900D fully automatic blowing and capturing device
1、 Instrument Introduction
The PT-7900D fully automatic blowing and capturing device is developed and produced by Beijing Zhongyi Yusheng Technology Co., Ltd., mainly forVolatile organic compounds applied in water and soilVOC analysis,It can also be used for the analysis of volatile compounds in food. conform toThere are standards《HJ639-2012 Determination of volatile organic compounds in water quality by blow sweep capture/gas chromatography-mass spectrometry method、《HJ686-2014 Determination of Volatile Organic Compounds in Water Quality by Sweep Capture/Gas Chromatography, HJ605-2011 Determination of Volatile Organic Compounds in Soil and Sediments by Sweep Capture/Gas Chromatography Mass Spectrometry, etc.
2、 Characteristics and main functions of the instrument
1. It can automatically run 1-30 samples without the need for personnel on duty;
2. Power on self-test, fault alarm and prompt, automatic positioning and calibration of sample disk;
3. Microcomputer program control, with main functions including:
⑴ Method parameter setting, real-time animation display of working status, and running time;
⑵ The injection valve, sample transfer tube, water trap, and capture tube desorption zone 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 The GC and GCMS chromatographic data processing workstations can be started synchronously, and the device can also be started by external programs;
4. Through time programming, automatic functions such as blowing, trapping, desorption, injection, and backwashing cleaning can be achieved;
5. This device is equipped with automatic sample mixing function；
6. Adopting electronic refrigeration and two-stage flash evaporation thermal desorption process to ensure narrow chromatographic peak shape；
7The sample transfer tube and injection valve have automatic blowback function, which avoids cross contamination of different samples;
8Equipped with dedicated startup line interfaces for synchronous domestic and international GC and GCMS,Can connect all models both domestically and internationallyGC、GCMS；
9The sample passes through a water trap to prevent water vapor from entering the capture tube, reducing the impact of water vapor on GC and GCMS;
3、 Main technical parameters
1. Temperature control range of water trap:
room temperatureHeating power of approximately 400W is set at 240 ℃ 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. Detachment of capture tubeTemperature control range:
Room temperature~400℃ In increments1℃Appointment;
(Heating rate)2000℃/min）
5. Cold trap temperature: The lowest refrigeration temperature can reach minus 30 degrees Celsius, using electronic refrigeration devices;
6. Sample temperature control range:
room temperature-240 ℃ with increments of 1 ℃. The heating power is approximately200W；
7Temperature control accuracy:<± 0.5 ℃;
8Temperature control gradient:<± 1 ℃;
9Sample bottle workstation: 30 positions;
10Sample bottle specifications:40ml ；
11. PurgeTraffic:0～100ml/Min (continuously adjustable);
12Backflow rate:0~200ml/Min (continuously adjustable);
13Effective size of the instrument: 580×450×500mm3；
14The weight of the instrument is approximately 32kg.
