First, the type of centrifugal pump is transported by the nature of the liquid can be divided into:
(1) Pumps (type B, type D, type sh) are used to transport clean water and clean liquids with chemical and physical properties similar to water.
(2) corrosion-resistant pump (F-type) used to transport acid, alkali and other corrosive liquids.
(3) Oil pump (Y type) is used to transport petroleum products.
Second, the choice of centrifugal pump (1) according to the nature of the liquid being transported and operating conditions to determine the type;
(2) Determine the type of pump (selected from the catalog or catalog) based on the flow rate (usually determined by the production task) and the required head pressure in the pipeline.
(3) If the viscosity and density of the liquid to be transported differ greatly from that of water, the characteristic parameters of the pump should be calculated: flow rate, pressure head and shaft power.
When choosing a centrifugal pump, there may be several types of pumps that meet the requirements of operating in the optimum range at the same time. In this case, you can determine the operating points of each pump, compare the efficiency of the operating point, the preferred choice.
Centrifugal pump is characterized by liquid delivery capacity, uniform flow, but the resulting pressure is not high, and the pressure head with the flow changes.
High-temperature 2-color Ratio Pyrometer
This classification includes two color infrared pyrometers measuring range start from 600℃. Two-color pyrometer determines the temperature of an object by measuring the ratio of energy at two different wavelengths. The advanced software and hardware design help pyrometers meet the application in harsh environment as moisture, dust, target size change, partial blockage and emissivity change, even if the detection signal attenuates 95%, the temperature measurement results will not be effected.
In two color mode, pyrometer measure the highest temperature in an area without being limited by the size of the measured target. The two-color mode determines the temperature by the ratio of the signal from two wavelength. When with small measuring object, dusty, water vapor and foggy, changing distance, partially occlusion, and frequently changing emissivity, the signals of two wavelength fall simultaneously and the ratio remains the constant after division.
2-color Pyrometer, high temperature infrared pyrometer, high temperature Pyrometer
Changzhou Sijie Optoelectronics Technology Co.,Ltd. , https://www.sjinfrared.com