Fully automatic vacuum condensation extraction system (LI-2100)

LI-2100 Fully Automatic Vacuum Condensation Extraction System

The stable isotope method is an important research tool in various disciplines such as atmosphere, hydrology, and ecology. The determination of stable isotopes of hydrogen and oxygen in soil and plant water is widely used in the separation of plant transpiration and evapotranspiration, root water use efficiency, and the mechanisms of plant water transport and absorption. The traditional methods for extracting plant and soil moisture mainly include low-temperature online distillation and azeotropic distillation. The low-temperature distillation method is currently the more commonly used method for water extraction, but it requires the addition of liquid nitrogen during the operation, which is cumbersome and the glass components are vulnerable. The azeotropic distillation method requires the addition of expensive solvents such as toluene or xylene, which are not only harmful to the body but also pollute the environment. With the development of isotope analysis technology, the measurement speed of water isotopes is getting faster and faster, and the existing water extraction methods can no longer meet the needs of users. Therefore, having a set of fully automatic plant and soil moisture extraction equipment that is easy to operate and fast to extract is an urgent requirement for current water isotope research work.

working principle:This device adopts the principle of ultra-low pressure vacuum distillation freezing, which heats and distills the moisture in the sample in an ultra-low pressure environment, condenses and collects it in a low-temperature environment, thereby achieving the extraction of moisture without fractionation. The system mainly consists of an ultra-low pressure system, a heating system, a refrigeration system, and a control system. The entire process is automatically completed under the monitoring of the control system.

FEATURES：

1. Using traditional classic methods, the data is reliable;

2. Fully automatic extraction: unmanned throughout the entire process;

3. Easy to operate: After placing the sample, one click operation is required without the need for experienced operators;

4. Fast: Extraction speed>110 samples/day；

5. No need for liquid nitrogen: using a compressor for refrigeration;

6. Convenience: The system has self power-off and self-protection functions;

7. Quality control: Fault prompts and automatic alarms to avoid incorrect sample extraction;

8.Technological excellencePowerful fully automatic plant soil vacuum extraction equipment.

TECHNICAL INDEX：

1. Working principle: uniquely designed fully automaticUltra low pressure and low temperature condensation method；

2. Extraction speed:>110sample/day；

3. Number of samples that can be extracted simultaneously:14individual4. Extraction rate:>98%；

5. rate of recovery:99%-101%；

6. Pressure accuracy:1x10^-1~10⁴Pa（±10%Reading),1x10⁴~10⁵Pa（±20%Reading),1x10^-2~10^-1Pa（±30%Reading)；

7. vacuum pump：5L/min, 24VHigher pressure,0.3bar；
8. Refrigeration: No need for liquid nitrogen, compressor combined with cold trap, lower refrigeration temperature, can reach-95℃；

9. Heating: Electromagnetic heating, higher heating temperature, up to130℃；

10. Display and operation:TFT LCD（12Inch,800*480，65536Color based touch friendly human-computer interaction interface；

11. Automatic protection: If the temperature is too high or exceeds the set value, the heating system will automatically shut down；

12. Automatic alarm: refrigeration system fault prompt and alarm, and vacuum leakage fault alarm；

13. Size:90×74×110 cm14. Weight:120 kg.

Ordering Guide:LI-2100Fully automatic vacuum condensation extraction system:Including heating unit, vacuum and control unit, cold trap, metal extraction kit, collection tube, and sample bottle, etc.

Place of Origin:

China LICA