法兰式液位计_差压液位变送器零点调校

法兰式液位计_差压液位变送器零点调校,是做为西安华恒仪表自主生产的
Flange level gauge_ Zero point adjustment of differential pressure liquid level transmitter is independently produced by Xi'an Huaheng Instrument Co., Ltd
液位变送器是国内液位测量比较常用的一种变送器，它结构简略，便于装配，
Liquid level transmitter is a kind of transmitter commonly used in liquid level measurement in China. It has a simple structure and is easy to assemble,
在液位变送器夏日发生冰冻时,装配在室外的变送器必需采用防冻措施,防止引压口内的液体因结冰体积压缩,导至传感器损坏。接线时,将电缆穿过防水评论辩论(附件)或绕性管并拧紧密封螺帽，以防雨水等经过过程电缆渗漏进变送器壳体内。
When the liquid level transmitter is frozen in summer, the transmitter assembled outdoors must adopt anti freezing measures to prevent the liquid in the pressure tap from compressing due to the frozen volume and leading to the sensor damage. When wiring, put the cable through the waterproof comment debate (accessory) or winding pipe and tighten the sealing nut to prevent the rain water and other cables from leaking into the transmitter shell.
法兰式液位计_差压液位变送器在压力传输过程中，可能引起误差的原因如下：
Flange level gauge_ In the process of pressure transmission of differential pressure level transmitter, the possible causes of error are as follows:
1、泄露;
1. Leakage;
2、磨损损失(特别适用洁净剂时);
2. Wear loss (especially for detergent);
3、液体管路中有气体(引起压头误差);
3. There is gas in the liquid pipeline (causing pressure head error);
4、气体管路中存有液体(引起压头误差);
4. There is liquid in the gas pipeline (causing head error);
5、两边导压管之间因温差引的密度不同(引起压头误差)。
5. The density caused by the temperature difference between the pressure pipes on both sides is different (causing head error).
液位变送器厂家的选型样本，确定法兰标准，法兰尺寸，法兰压力级别和法兰形式。多的是DIN标准和ANSI标准。投入式液位变送器是基于所测液体静压与该液体高度成正比的事理，采用疏散硅或陶瓷敏感元件的压阻效应，将静压转成电旗子灯号。颠末温度补偿和线性校正。转换成4-20mADC标准电流旗子灯号输出。
Type selection sample of liquid level transmitter manufacturer to determine flange standard, flange size, flange pressure level and flange form. Many are DIN standards and ANSI standards. Based on the principle that the static pressure of the liquid measured is directly proportional to the height of the liquid, the input liquid level transmitter adopts the piezoresistive effect of evacuated silicon or ceramic sensitive elements to turn the static pressure into the electric flag light. After temperature compensation and linear correction. Convert to 4-20madc standard current flag light output.