What are some methods for implementing partial journey testing?
Thread Content
Question: 1. What are the implementation methods for partial journey testing? For example, through a locator. 2. What requirements must its corresponding control system meet to have a partial-stroke testing function? Or is there no need for any special requirements; can it simply be that the positioner makes minor adjustments based on a given opening degree (in case the positioner is used to perform a partial-stroke test)? Which brands’ control systems can achieve this?
1. Partial stroke testing is mainly carried out through positioners. Specific methods include using intelligent valve positioners to perform partial on/off operations on the valves, in order to simulate partial stroke conditions under actual operating conditions. 2. The control system must have the capability to support smart positioners and partial stroke testing functions. There is no need for extremely high requirements, but it is essential to ensure that the system can communicate properly with the locator, receive its feedback, and adjust the valve position as necessary. Some well-known brands such as Emerson and Honeywell offer control systems and positioners that enable partial stroke testing. .
Thank you for answering. For positioners that support partial stroke testing imported from abroad, which domestic systems can also perform partial stroke testing? Do systems such as Hilscher and CENTRAL CONTROL have some type of travel test module functionality?
Among domestic control systems, those produced by companies like LISI and Supcon also generally support the partial stroke test function. These systems can be used in conjunction with imported positioners (such as those from Siemens, Fisher, and other brands) to perform partial stroke testing. Ensuring compatibility between the system and the locator, as well as consistency in communication protocols, is key to conducting the test. When making a purchase, you can ask the supplier whether a specific model supports this function, to ensure it meets your requirements. .
Imported valve positioners, such as those from brands like Siemens and Fisher, generally meet high technical standards and offer good compatibility, allowing them to work with various control systems. Domestic control systems, such as LEAD and Supcon, generally also support partial stroke testing functionality. However, for this function to be implemented, the system itself must have the necessary interfaces and software support. Brands such as LS and Zhongkong generally provide corresponding modules or software functions to carry out partial travel tests, thereby facilitating equipment maintenance and fault diagnosis. When selecting a specific product, you can ask the manufacturer whether it supports the partial-stroke testing function for certain imported positioners, and find out what configurations or additional modules are required. This ensures good compatibility and communication capabilities between the two. .