Sealand is a trustworthy manufacturer of CNG Mass Flow Meter, CNG Mass Flowmeter, CNG Flow Meter, CNG Flowmeter, CNG Coriolis Meter, ATEX, IECEx & CE approved.
With its high accuracy, wide rangeability and reliable performance, Sealand meter has been applied in many kinds of industries during the last 8 years. Unlike others who only focus on the measurement of liquid at normal pressure & temperature, Sealand has conquered the difficulty in the measurement under severe conditions, such as high pressure, high viscosity, high & low temperature. CNG Mass Flow Meter, CNG Mass Flowmeter, CNG Flow Meter, CNG Flowmeter, CNG Coriolis Meter Zhejiang Sealand Technology Co., Ltd. , https://www.sealandflowmeters.com
Take CNG (compressed natural gas) for example. As the saying goes, the meter can measure anything else if it can measure CNG. It is quite hard to measure gas under high pressure. The sensor must be able to bear high pressure; in this way, the thickness of flow tube must be increased, so the transmitter shall be more sensitive to detect the signal; however, Sealand made it. Sealand's first model is specially designed for CNG dispenser, and now thousands of this model are put into use on the market.
Chemical pump: the media decided by the material model When we select the chemical pump, must be due to "mediated" appropriate, according to the nature of the transport medium to choose, so as to play the greatest benefits chemical pump itself. Chemical pumps according to the characteristics of their different media can be divided into four categories: â‘ pumps: including water pump, hot water pump, condensate pump, boiler feed pump. â‘¡ oil pump: hot oil pump, cold oil pump, oil pump, liquid hydrocarbon pump. â‘¢ impurity pump: including sewage pumps, slurry pump, sand pump, pulverized coal pump, ash pump and so on. â‘£ corrosion-resistant pumps: including stainless steel pumps, high-silicon cast iron pump, titanium pump, impermeable graphite pump, ceramic acid pump, hard rubber pump, hard PVC pump. In these four categories, the choice of corrosion-resistant chemical pump to be particularly cautious, because of its delivery are corrosive high-risk substances, once the slightest mistake, then lightly damaged equipment, weight can cause accidents or even Trigger a disaster, the crisis of personal safety. Select the corrosion-resistant chemical pump, the first weight of the material science. In most people's opinion, stainless steel is the preferred corrosion-resistant material, but in fact, stainless steel is not a panacea, nor is it suitable for any medium or environment. Below, we look at the selection of several common corrosive media problems. First, the acidic medium: â‘ sulfuric acid: ordinary stainless steel on the role of sulfuric acid medium limited, carbon steel and cast iron for concentrated sulfuric acid has good corrosion resistance, but it is not suitable for high-speed flow of sulfuric acid, not suitable for chemical pump material. The use of high-silicon cast iron and high-alloy stainless steel is a good choice, but in fact there is a material - fluorine plastic, which has better resistance to sulfuric acid. Taking into account the economy, it is clear that fluorine plastic is the best choice. â‘¡ Hydrochloric acid: most of the metal materials, including stainless steel, have poor corrosion resistance to hydrochloric acid. On the contrary, most non-metallic materials have good corrosion resistance against hydrochloric acid, so all of them are like rubber, polypropylene, fluoroplastic, etc. Is a good choice for delivery of hydrochloric acid. â‘¢ nitric acid: stainless steel nitric acid has good corrosion resistance. â‘£ acetic acid: stainless steel for hydrochloric acid has good corrosion resistance. For high temperature concentrated acetic acid, high-alloy stainless steel pump or fluorine plastic pump can be used. Second, the alkaline medium: â‘ sodium hydroxide: stainless steel for sodium hydroxide has good corrosion resistance, but also choose ordinary steel, although corrosive, but if there is no strict media cleanliness requirements, do not mind the reference Mixed with a small amount of iron, you can choose ordinary steel, stainless steel economy is stronger. â‘¡ ammonia hydroxide: most of the metal and non-metallic ammonia hydroxide corrosion resistance are strong, only copper and copper alloy is not applicable. â‘¢ Sodium chloride: ordinary steel corrosion rate in sodium chloride solution is not too high, but must be protected by paint; stainless steel also has a very low corrosion rate, but may be due to chloride ions caused by localized corrosion, usually 316 stainless steel is better .