|
Industry Knowledge 您现在的位置:首页 - Industry Knowledge
Electronic balance of error caused by environmental factors
Electronic balance is a precision electronic instrument , vulnerable to external environmental factors produce errors , so we want to find the source of these errors , so as to reduce the error to obtain a more accurate result, here we come to a brief analysis of sources of error under the electronic balance .
First, we must choose dust, shock, moisture , temperature fluctuations of the room to prevent the balance room as the high accuracy of the balance should be used in a constant temperature chamber . Secondly , the balance should be placed on a solid and reliable work table, and select the appropriate position placed , in order to operate . Balance before installation should be based on the balance of the complete list of inventory parts are complete and in good condition ; right balance carefully clean all parts . Installation, should refer to the manual of the balance , the balance correct assembly and correct level should be checked again after the installation of each part of the installation is normal, then check the supply voltage meets the requirements of balance , and then plug the power cord .
Electronic weighing scales of operation, should the proper use of the control keys and function keys ; choose the best integration time , correctly grasp the reading and printing time , to obtain the best weighing results . When continuous weighing tare key , you should pay attention to the balance overload . In the process of weighing scales should shut the door . After using electronic balance , the balance should be closed and the door cover, turn off the power , cast the dust cover . Starting from the first use of electronic balance , coping its periodic calibration. If used continuously , roughly calibrated once per week . Calibration standard weights must be used , and some balance built with standard weights , you can use it to calibrate the balance. Before calibration , electronic scales must be warmed up more than 1 hour , and proofreading level . Calibration procedures should be required , otherwise it will not achieve the role of calibration . Before you begin using electronic balance , requiring pre-boot , that is, to warm up for half an hour to an hour . If you use several times a day , it is best to balance open all day . Thus, the electronic balance can have a constant within the operating temperature , the process is conducive to precise weighing .
As the electronic balance of various environmental factors are inconsistent with the requirements of the standard state , which leads to a measuring device and the measurement itself the error caused by changes , such as temperature , humidity, pressure , vibration , electromagnetic , light, etc. induced errors. Typically electronic balance instrumentation used under specified conditions resulting error is called the basic error of indication , beyond this condition is called using the additional error caused by the error .
|