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Dry goods! Operational essentials for high speed refrigerated centrifuges

2018/10/19 11:15:39      click :

  The process of using a high speed microcentrifuge is not complicated. As long as the debugging is completed, the operation will be smooth!
  Shanghai Luxiangyi Centrifuge Instrument Co., Ltd. relies on many years of experience in the production and sales of high speed microcentrifuges. The debugging and use of multi-products has a certain experience, so the following is the technical sharing from the technical experts:
  What are the highlights of a high speed microcentrifuge while extracting the ingredients needed in a liquid mixture?
  First, the software process is intelligent: the choice of high speed microcentrifuge rotor
  Control subroutines for seven rotor models have been identified in the prototype commissioning and are suitable for rotors from several thousand to 30,000 revolutions. In the application, the user simply enters the rotor model used by the user via the keyboard.
  In the event of control failure and system mechanical failure, it should be able to detect and alarm in time, close all control objects, and minimize system losses. At the same time, when some faults that do not affect the production are detected, such as button damage, abnormal display, etc., the alarm prompts the operator, but does not stop production.
  Problems and solutions in debugging
  (1) Some production workshops are next to the power frequency quenching furnace or electric welding workshop. The industrial interference is serious, which has a great impact on the normal operation of the system, and often causes the program to “run away”. To this end, the instrument design has always taken anti-interference measures. These include:
  a. Software anti-interference measures;
  b. In addition to the white reset measures on the hardware, the shielding isolation measures are strengthened;
  c. Use independent power supply (phase separation with interference source) or add UPS power supply;
  d. An IRC absorbing circuit is added to the relay coil. With these measures, the system works normally and there is no crash.
  (2) The sampling signal is unstable, which affects the reliability of the control. Due to the serious interference, the signal is stable, resulting in a false phenomenon of the sampling signal, causing a malfunction. We analyze the phenomenon based on the scene, and finally solve the problem by adding a hardware filter circuit at the front stage.
  High-speed micro centrifuge operating procedures:
  Centrifuge the sample to the same density, 3 mm from the tube mouth.
  The symmetrical state of the centrifuge tube with the same density, trimming and drying of the tube wall is placed in the hanging basket, and the corresponding test tube cover is screwed to the corresponding hanging basket, and the empty hanging basket is also suspended, so that the horizontal force of the rotor is evenly distributed. Otherwise, a serious laboratory accident with a broken shaft will occur during operation. --Shijiazhuang Huachen Lotte Biological Experimental Equipment Co., Ltd.
  Cover the high speed microcentrifuge lid
  high speed microcentrifuge open switch
  Place the rotor hanging the basket straight down on the shaft sleeve to ensure it is secure.
  Tighten the rotor cover.
  Press and hold the specified position to push the door cover down.
  Centrifugal parameter setting of high speed microcentrifuge: speed, time, rotor type, temperature, lifting speed frequency (automatic rotor recognition function is now available for the switch model function)
  Confirm that the parameter setting is correct. Press START to start, and the high-speed micro centrifuge can reach the set speed for 5 minutes before the user can leave. Observe whether the instrument is working properly during the centrifugation.
  After the end of the centrifugation (or stop the operation by STOP), after the rotor stops running, open the door cover, loosen the rotor cover, take the rotor out and put it on the special rack. 14 Take out the hanging basket and take out the sample.
  The hanging basket is open at the designated position. If there is liquid leakage, take out the sealing ring, wash it and then put it on the tablecloth.
  Turn the instrument off
  Condensed water in the centrifuge chamber
  The above is the operating principle of high speed microcentrifuge, I hope to help the majority of users, if you have any questions, please call Shanghai Luxiangyi Centrifuge Instrument Co., Ltd., we will be happy to communicate with you!