随着冷藏库自动控制技术的发展,我们迫切需要将一些重要的制冷工艺参数——如温度、压力、液位、流量等给予运距离显示、自动调节和自动记录,以确保制冷装置安全和经济运行。近几年来,对选用合适的温度和压力变送器的研究工作做得比较多,进展也较大。 With the development of automatic refrigerator control technology, we urgently need to give some important refrigeration process parameters such as temperature, pressure, liquid level, flow rate to give the distance display, automatic adjustment and automatic recording to ensure the safety and economy of the refrigeration unit run. In recent years, there has been more research on the selection of suitable temperature and pressure transmitters and more progress has been made.