西安华恒变送器制造商已经开发出传感器和智能电路板这两项核心技术。 不仅掌握了所有产品的所有核心组件技术，而且工业自动变送器制造商的精度也在不断提高，从0.2提高到0.1。 通过扩展精通的核心技术，它还可以改变其他测量流量和温度的产品
Xi'an Huaheng transmitter manufacturer has developed two core technologies, sensor and intelligent circuit board. Not only master all core component technologies of all products, but also the accuracy of industrial automatic transmitter manufacturers is constantly improving, from 0.2 to 0.1. It can also change other products that measure flow and temperature by expanding the core technology of mastery
3151压力/差压液位仪表百科:压力变送器和液位变送器的区分/解下压力变送器、差压变送器原理
3151 Encyclopedia of pressure / differential pressure level instruments: distinction between pressure transmitter and level transmitter / principle of pressure transmitter and differential pressure transmitter
3151压力/差压液位仪表百科:压力变送器和液位变送器的区分/、压力变送器原理
3151 Encyclopedia of pressure / differential pressure level instruments: distinction between pressure transmitter and level transmitter / principle of pressure transmitter
压力变送器感受压力的电器元件一般为电阻应变片，电阻应变片是一种将被测件上的压力转换成为一种电信号的敏感器件。电阻应变片应用最多的是金属电阻应变片和半导体应变片两种。金属电阻应变片又有丝状应变片和金属箔状应变片两种。通常是将应变片通过特殊的黏合剂紧密地粘合在产生力学应变基体上，当基体受力发生应力变化时，电阻应变片也一起产生形变，使应变片的阻值发生改变，从而使加在电阻上的电压发生变化。
The electrical components of pressure transmitter to sense pressure are generally resistance strain gauge, which is a kind of sensitive device that converts the pressure on the tested part into an electrical signal. The most widely used resistance strain gauge are metal resistance strain gauge and semiconductor strain gauge. There are two kinds of metal resistance strain gauge: wire strain gauge and foil strain gauge. Generally, the strain gauge is tightly bonded to the mechanical strain matrix by a special adhesive. When the stress of the matrix changes, the resistance strain gauge will also deform together, so that the resistance of the strain gauge changes, so that the voltage applied to the resistance changes.
3151压力/差压液位仪表百科:压力变送器和液位变送器的区分/、差压变送器
3151 Encyclopedia of pressure / differential pressure level instruments: distinction between pressure transmitter and level transmitter / differential pressure transmitter
差压变送器所测量的结果是压强差，即△P=ρg△h。而由于油罐往往是圆柱形，其截面圆的面积S是不变的，那么，重力G=△P·S=ρg△h·S，S不变，G与△P成反比关系。即只要准确地检测出△P值，与液位高度h成反比，与高度差△h成正比，在温度变化时，虽然油品体积膨胀或缩小，实际液位升高或降低，所检测到的压力始终是保持不变的。
The result measured by the differential pressure transmitter is the pressure difference, that is, △ P = ρ g △ H. Since the oil tank is usually cylindrical, the area s of its section circle is constant. Then, the gravity g = P · s = ρ g △ h · s, s is constant, and G is inversely proportional to △ P. That is to say, as long as the value of △ P is accurately detected, it is inversely proportional to the height h of the liquid level, and directly proportional to the height difference △ h. When the temperature changes, although the volume of the oil expands or shrinks, the actual liquid level rises or falls, the detected pressure remains unchanged.
投入式液位计安装与调试
Installation and commissioning of input liquid level meter
1、变送器可垂直、倾斜或水平安装在罐体、槽内，应注意不让泥沙埋没或堵塞膜片;
1. The transmitter can be installed vertically, obliquely or horizontally in the tank body and groove, and attention shall be paid not to allow sediment to bury or block the diaphragm;
2、在介质波动较大的场合，应采取固定措施，如采用也ф12的防波管;
2. In case of large fluctuation of medium, fixed measures shall be taken, such as anti wave tube of ф 12;
3、导气电缆除作为电源和信号转换外，主要为引人大气补偿用，安装时注意不要挟持过紧，折弯过锐;
3. In addition to being used as power supply and signal conversion, the air conducting cable is mainly used for air induction compensation. Pay attention not to hold it too tightly and bend it too sharply during installation;
4、壳体垂直安装在罐体上方或附近的支架上，应保证防晒透气，安装位置应便于接线与调校。
4. The shell is vertically installed on the bracket above or near the tank body, which shall ensure sun protection and ventilation, and the installation position shall be convenient for wiring and adjustment.
5、本产品在出厂时已经校准，其零点是相对于河南地区的大气压，满点是在一个大气压下的相对压力。若需要现场调整可采取以下方法：
5. This product has been calibrated at the time of delivery. Its zero point is relative to the atmospheric pressure in Henan area, and its full point is relative pressure under one atmospheric pressure. If field adjustment is required, the following methods can be adopted:
现场调零------当液位位处于位时，将调零键“Z”按一下，输出电流自动调整到4mA。现场调满------当液位处于高位时，将调满键“S”按一下，输出电流自动调整到20mA。调整好后，应将变送器的端盖拧紧。
Field zero adjustment ---- when the liquid level is at the position, press the zero adjustment key "Z" once, and the output current will be adjusted to 4mA automatically. Full on site: when the liquid level is at high level, press the full key "s" once, and the output current will be adjusted to 20mA automatically. After adjustment, tighten the end cover of the transmitter.
华恒变送器厂家凭借自身拥有的传感器和智能电路板核心技术，可以根据客户要求，低成本对核心技术进行延伸变形，实现个性化产品定制。主要产品有SMART（斯玛特）系列压力变送器、多参数变送器、流量器、温度传感器和物位（液位变送器厂家，为我国电力、石油、化工、冶金、水泥、矿业等行业提供了高性能价格比的工业自动变送器厂家产品.
With its own core technology of sensor and intelligent circuit board, Huaheng transmitter manufacturer can extend and transform the core technology at low cost according to customer requirements to achieve personalized product customization. The main products are smart (SMART) series pressure transmitter, multi parameter transmitter, flowmeter, temperature sensor and level (liquid level transmitter manufacturer, which provides high performance price ratio industrial automatic transmitter products for China's power, petroleum, chemical, metallurgical, cement, mining and other industries