|信息来源： 液位变送器 | 2020-06-12 点击量： 1756|
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 Encyclopedia of pressure / differential pressure level instruments: distinction between pressure transmitter and level transmitter / principle of pressure transmitter and differential pressure transmitter
3151 Encyclopedia of pressure / differential pressure level instruments: distinction between pressure transmitter and level transmitter / principle of pressure transmitter
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 Encyclopedia of pressure / differential pressure level instruments: distinction between pressure transmitter and level transmitter / differential pressure transmitter
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.
Installation and commissioning of input liquid level meter
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. In case of large fluctuation of medium, fixed measures shall be taken, such as anti wave tube of ф 12;
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. 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. 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:
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.
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