Gas heater valve positioner Troubleshooting

Intelligent gas heater valve positioner by standard diagnostic function although can identify the main diagnostic gas heater valve state error, the direct reasons but for Barbecue Valves to identify fault is a very difficult thing, users need a diagnosis report of feasibility to find the fault reason "". So the current intelligent gas heater valve positioner manufacturers in addition to provide standard diagnosis function I extended diagnostic function, to meet the various needs of users. Expansion mainly focus on the following two aspects:



(1) installation auxiliary sensors in intelligent gas heater valve positioner, the actuator need to disconnect, the use of this sensor to detect changes at this time of the pneumatic input and output signal size, so as to judge the work piece and the actuator gas heater valve is normal. For this method, the vast majority of manufacturers are to measure the load to the actuator diaphragm pressure sensor is installed on the pressure, the pressure and the gas heater valve position. Online mode of operation, only recording the signal gas heater valve running down, can provide friction and pressure Range Dual Safety Valve, so that we can come to a more effective "diagnostic report".



(2) through a special program software in reference to the initial gas heater valve position slightly changed, whether online or offline, the dynamic response of change will signal is recorded in the memory of smart gas heater valve positioner, thus forming a clear change image, through the change of image analysis is the delay time and the time of transmission is increased or reduced, and combined with the analysis method of mathematical simulation module, diagnostic analysis to predict the operating state of the gas heater valve parameters by image analysis. It can also get a diagnosis of "report", is convenient for the user to identify the cause of the malfunction.



(3) is completely realized in the internal process of diagnosis and testing should be locator, and according to the similar traffic light coding system automatically sends the alarm state, at the same time the alarm is process control system shows that the repair personnel interested in alarm at the appropriate authorization level, gas stoves freestanding is not interested in the operator information analysis function and processing, prompt repair repair personnel will appear. The prospect of the development of intelligent gas heater valve positioner diagnosis function in three, petrochemical field.