Process instrumentation monitoring is achieved throughProcess analysis instrumentThe technology for real-time monitoring of physical (temperature, pressure, flow) and chemical (pH, conductivity) parameters in industrial production, with the core value of providing real-time data to assist enterprisesEnsuring safety, optimizing efficiency, and controlling qualityFor example, when the pipeline is under pressure of 10 kilograms, real-time monitoring of pressure can avoid accidents caused by overpressure to 20-30 kilograms; The factory spans 10 kilometers and is centrally controlled through central control to reduce manual inspection costs.
From the perspective of instrument types, process instruments are divided into two categories:One time instrumentNo need for secondary processing data, such as thermometers (driven by thermistor/metal thermal expansion pointer, mature technology and largest usage in China), pressure gauges (using silicone oil method to monitor pressure, typical scenario is secondary water supply in smart pump rooms, solving the problem of insufficient water pressure during peak water consumption on floors 10-20);Secondary instrumentRaw signals (such as millivolt level signals output by pH sensors) need to be processed, accounting for more than 90% of analytical instruments, represented by pH instruments (power plant desulfurization control pH emission prevention standards are not met, biopharmaceutical control culture medium pH prevention bacterial species death) and conductivity instruments.
Common instrument applications cover multiple scenarios: flow meters can simultaneously measure flow velocity (such as 15 meters/second), instantaneous/cumulative flow, and support water circulation control; PH instrument is the core of chemical parameter monitoring. Low pH in power plant desulfurization can lead to desulfurization failure. Neutral bacterial strains in biopharmaceuticals need to be controlled at pH 7-7.5, and acidic preferred bacterial strains should be less than 6, otherwise the bacterial strains may die.
Nowadays, instruments are mostly integrated intoAutomated control systemThe data is transmitted in real-time to the central control room, and the central control screen can display the parameters and warning values of each node. For special working conditions, customized solutions are also provided: explosion-proof instruments are suitable for hazardous areas, pipeline uninterrupted design supports sensor installation and maintenance, pH sensors have four installation methods (top insertion type, etc.) in strong corrosion scenarios, and dedicated sensors are also available for high viscosity/scaling media (based on 17 years of water quality analysis experience).