Instrumentation in petrochemical industries are basically flowmeters, pressure transmitters, level meters, temperature instruments, and analysis instruments, etc. Temperature Indicator :
The measurement of temperature is an vital part of instrumentation in petrochemical industries. We use platinum Resistance Temperature Detectors (RTD's) mostly as they are more instrictive and give a better response. Thermocouples are used in locations that need a more durable sensor. Thermocouples come in many types.
Pressure Measurement:
We use a Pressure to Current converter (P/I converter)in the petrochemical industries to measure and show the amount of pressure developed by the Liquified Petroleum Gas (LPG), crude oil, petrol, and various other petroleum byproducts. In the P/I converter, the indicated pressure can be a digital or an analog form. The main advantage is that it can be directly shown in the control panel in the control room. This is also the same for temperature measurement.
Flowmeter:
The measurement of petrol is conducted in an oil refinery when refined oil is measured before leaving the refinery. Because the refined oil is volatile, it is important to make it clear how much oil is transported at each measurement site along the pipeline. It is also true for natural gas. Therefore, the measurement of crude oil and natural gas plays an important role in oil industry. The competition in flow meter market is extremely intense, and flow meters generally consist of the vortext, Positive Displacement (PD), Differential Pressure (DP), Carioles, and ultrasonic.
Level Meters:
The petroleum, natural gas, and petrochemical industries place high requirements on level measurement. Besides instruments of traditional technologies like differential pressure level meters, there are also level meters of radar, magnetostrictive and magnetic float, etc. applied extensively. The petroleum and gas industry is an important segment where level meters witness high growth over recent years. As China improves the industrial technologies of extracting and transporting oil, some new high-end level meters will have a wide application in this segment.
Analysis Instruments:
Industrial chromatographs are generally used in the olefin processing in the petrochemical industry. Every year, usually hundreds of sets are needed in China. However, influenced by the project cycle, demand fluctuates greatly. Despite a small number of those being applied, the industrial chromatographs cover a large proportion in the sales volume of analysis instruments because of their high prices. Furthermore, continuous gas analyzers are also widely applied to the petrochemical industry.
The petroleum and gas industry is also an important sector for the growing analysis instruments over the past few years. With the improvement of industrial technologies in oil extraction and transportation in China, some analysis instruments serving to improve the product quality and industrial security are being applied increasingly.
