压力变送器(横河川仪(含DCS))
* 1. This picture shows Total Accuracy in the field. All of these items must be stable to realize high accuracy in the field. 2. Usually only 揑nput- Output Characteristics are discussed for accuracy. And this item is sometimes same accuracy between some instruments. But this is only an indication of the accuracy under standard conditions which is usually 25 deg C and atm pressure. But transmitters operate in the field and we must consider the accuracy under operating conditions as well. We have to take into account the temperature effect, static pressure effect and over-pressure effect to constitute total accuracy in the field. 3. DPharp realize high accuracy all of these items. We show the data of DPharp for these items. These data are better than other competitors. * 1. Recently, most of transmitter guarantee 0.1 % accuracy. So, probably, it seems accuracy of transmitters are almost same for all transmitters. This picture shows the difference of DP harp accuracy compare with other transmitter. 2. Picture of left side shows the accuracy guaranteed by specification. Accuracy written in General Specification sheet shows the accuracy under standard condition. Usually, calibration is done in air conditioned room. It抯 desirable condition for correct calibration. Standard condition is just the same as this condition. So, no temperature change, no static pressure, and just after calibration. Many transmitter can realize high accuracy under this condition. 3. Picture of right side shows the actual operating condition. There are temperature change, static pressure change (same as line pressure change). In addition to this, sometimes, there are corrosive atmosphere. Transmitter must work stable under these actual field condition. DPharp realize high stability under this actual field conditions. * 1. Recently, most of transmitter guarantee 0.1 % accuracy. So, probably, it seems accuracy of transmitters are almost same for all transmitters. This picture shows the diffe
如果觉得《横河川仪压力变送器故障代码_教案压力变送器(横河川仪(含DCS)).ppt》对你有帮助，请点赞、收藏，并留下你的观点哦！
