Pressure transmitter verification procedures including what content?

Pressure transmitter of the related theory knowledge, in the previous article, we have to understand the problem that should be paid attention to in the selection, then, we continue to this topic, but is not the same as the content, mainly about its verification regulation of some knowledge, as for the specific content, readers after reading this article, should know that here is not to generalize, it began to introduce the following. 1. The appearance of the pressure transmitter requirements ( 1) Pressure transmitter of the content of the nameplate on the labeling should be clear and complete content should include the product name, model specifications, such as measuring range, must have the manufacturer information, can't miss. ( 2) Transmitter components should be intact, fasteners should be no loose and damage, movable parts should be able to flexible rotation, and reliable. ( 3) Transmitter shell should be clean, and no corrosion and mildew spot, its internal should be without impurities. ( 4) Pressure transmitter is in use and maintenance, cannot have an impact on the measurement and use of any defects. ( 5) When the measurement part of the transmitter limit under pressure, can't appear damage or leakage phenomenon. 2. Test equipment calibration conditions: choose calibration equipment, its measuring total uncertainty of no more than a quarter of the transmitter permissible error. Environmental conditions: 1) Temperature is 20 + / - 5 ℃, humidity is 45%, 75%; ( 2) Around the transmitter should not affect the normal work of the external magnetic field, it is has a regulation of pressure medium, specific for: measure the upper limit of 0. 25 mpa, the pressure medium is non-toxic harmless, property stable gas; On the measurement limit value greater than 0. 25 mpa, the pressure medium is liquid. 3. Verification period if it is mandatory, general verification cycle for half a year, other, can be used according to the conditions of some specific circumstances to determine, usually for one year. Unless noted, original articles for HuiXin thermal meter pressure transmitter, welcome reproduced! Reprint please indicate the address, thank you. Article source: http://www. wuxiyibiao。 com/