电磁隔膜计量泵是计量泵的一个种类，计量泵是一种可以计量被输送流体的特殊容积式泵。它一般由控制部分、驱动部分、传动部分及过流部分组成，电磁隔膜计量泵区别与其他计量泵的主要是驱动部分。
电磁隔膜计量泵是由电磁铁为驱动，为输送小流量低压力液体而设计的一种计量泵，它以结构简单、易于控制、能耗小、计量准确、调节方便以及价格便宜而在行业内受到欢迎，它的设计原则为“简单方便”，不过它的缺点就是计量流量小（一般90L/h以下），对管路压力要求比较低，这也从某些方面限制了它在工业上的应用。
世界上第一台电磁隔膜计量泵由美国米顿罗公司于1978年设计制造，其后也有几个国外的品牌相继出世，或国产化或国内组装，质量都还比较可靠。1997年，第一台真正拥有自主知识产权的国产电磁隔膜计量泵开始生产，从此打破了该市场一直以来由国外品牌垄断的局面。
电磁隔膜计量泵在质量上主要表现在以下几个方面：
1、材料的选取：由于计量泵输送的一般都是强腐蚀性液体，所以对于直接和被输送液体接触的耐腐材料有很大的要求。其选材分为结构元件材料和密封元件材料，选材的原则是材料的耐腐性能、加工性能等。
2、泵头结构：泵头为被计量流体的过流部分，它的质量好坏一般表现在结构合理性、密封性、耐腐性。

Electromagnetic diaphragm metering pump is a type of metering pump, metering pump is a measurement by the special volume of fluid delivery pump. It is usually part of the control, the drive part, transmission part and the over-current components, the difference between the electromagnetic diaphragm metering pumps and other metering pump is driven part of the main.
Electromagnetic diaphragm metering pump is driven by the electromagnet for the transport of small low-pressure fluid flow and design a metering pump, which structure is simple and easy to control, small power consumption, measurement accuracy, convenience and price adjustment in the industry welcomed the principle of its design as "simple", but it is the measurement of flow of the shortcomings of small (usually 90L / h or less) of relatively low pressure pipe, which restricted from certain aspects of its industrial应用.
The world's first electromagnetic diaphragm metering pump Milton Roy by the United States in 1978 in the design and manufacture, followed by a few brands have been born abroad, or domestic or national assembly, are also more reliable quality. In 1997, the first truly their own intellectual property rights of domestic electromagnetic diaphragm metering pump to start production, then to break the market has been monopolized by foreign brands situation.
Electromagnetic diaphragm metering pump is mainly manifested in the quality in the following areas:
1, the selection of materials: metering pump transmission as a result of the corrosive liquids are generally strong, so direct transmission liquid and decay come into contact with a lot of material requirements. Its material is divided into structural elements of materials and sealing component materials, the principle of selection of resistant material performance, processing performance.
2, pump head structure: pump head for measurement of fluid flow of the mixed quality of its performance in the structure of the general reasonableness of the seal, decay resistance.