First, open the problem - no display after opening: 1) There is no 220V current on the balance power socket to connect the AC stand; 2) If the AC adapter is wrong, choose 220V~ AC adapter (external transformer) suitable for China's work; 3) If exchange The adapter is broken, replace the new AC adapter; Second, open the problem - no display after opening 1) If the electronic balance calibration data is lost, please recalibrate the balance; 2) may be the impact of transient interference; Third, open the problem - fully open after opening No display: electronic balance using internal school; electronic balance using external school 1) The balance is too poor, the windproof window is not closed, the environment of the balance is improved, and all windproof windows are closed. 2) Calibration features: 1 week after preheating the electronic balance The first automatic calibration is performed; the second environment is after the balance is turned on for 2 hours; then after the balance is powered on for 150 hours, the on-time automatic calibration can be manually triggered at any time (internal school) if necessary. The electronic balance is automatically calibrated after it is turned on, and the calibration can be triggered manually (internal school) if necessary. Some electronic balances can only be used in external schools. 3) Calibration error: AB/PB/GB/SB uses an incorrect external weight for external school. When entering the external school program, the balance will have a flashing weight value, and the weight of this value will be used for the external school. 4) “CALL†appears at the top right of the electronic balance display: When “CALL†appears on the display, the display makes the balance work now, and it needs to be an internal school. “CALL†will disappear automatically after the electronic balance is finished. 4. Open problem - no display after opening 1) The environment where the balance is placed is too bad to improve the environment; 2) After the parameter setting in the balance menu is not well loaded into the menu, use the “RESET†function to exit the menu correctly and return to the factory settings. 3) The body temperature of the hand in the weighing room is reduced as much as possible. 4) The temperature of the weighed object is not equal to the temperature of the balance. The sample is placed isothermally next to the balance. 5) The sample has characteristics such as water absorption, water repellency, static electricity, magnetic properties, and the like. 5. Balance opening problem _ One of no display after opening: 1) The environment in which the balance is placed is too bad: environmental factors include: vibration, airflow, temperature, external magnetic field, the above environment must be improved, the windproof window of the weighing room is closed, and the balance In order to work properly. 2) The parameter setting in the balance menu is not good: after entering the menu, use the “RESET†function to exit the menu correctly and return to the factory setting. 6. The balance open problem - no display after opening: 1. Desiccant Water absorption and water discharge form airflow in different directions, causing changes in air buoyancy, resulting in unstable weighing. The desiccant in the weighing chamber should be removed to maintain a stable weighing environment. 7. The balance opening problem _ after opening Display: 1) Unloaded weighing: After power off, first install the correct weighing plate and then open the balance; 2) Weigh the disk: use the correct weighing plate that matches the balance 3) The weighing plate meets the windproof ring: For reasons of improper origin, please find out the cause of the collision and re-install it correctly.
Fluorine-Containing Methylbenzene
Fluorine-Containing Methylbenzene products can be used as herbicides in the manufacture controlling wheat fields, cotton fields and other broadleaf weeds and perennial weeds. It can also be used in the manufacture of antipsychotics drugs.
The Fluorine-Containing Methylbenzene products must be kept under seal, once exposed to light will immediately cause discoloration. It should also be stored in a cool, ventilated warehouse, away from fire and heat. Compartment temperature should not exceed 30 ℃. And make the appropriate technical measures for fire and explosion. Products will Decomposition by high fever and emit toxic gases, such as carbon monoxide, carbon dioxide, hydrogen fluorid. Due to ts vapor is heavier than air, it can spread from low place to far away places. In case of fire conditions, should not fire with water. In case of a small amount of leakage should be evenly sprayed with dilute hydrochloric acid. In case of large spills should build a causeway or trenching asylum. The transfer pump to tankers or exclusive collector, recycling or shipped to the waste disposal sites.
Containing Methylbenzene, 5-Fluoro-3-Nitrotoluene,2-Bromo-5-Fluorobenzotrifluoride
Taizhou Volsen Chemical Co., Ltd. , https://www.volsenchem.com