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Isolated Barrier
Signal Conditioner
Surge Protective Device
Safety Relay
Smart Controller
Q1What are the main points when selecting an isolated barrier? Q2How to distinguish between active and passive signals? Take GS8547-EX analog input isolated barrier as an example Q3Take GS8547-EX analog input isolated barrier as an example. It has an independent power supply. Does it output active signals? Q4What are the differences between independent powered, loop powered and output loop powered. Q5Can the analog input isolated barrier be used as an analog output isolated barrier? Q6How to calculate the conversion accuracy of the temperature input isolated barrier? Q7Digital input isolated barrier should select which output, transistor output or ralay output?
Q1What are the main differences between Chenzhu's CZ2000 range, CZ3000 range and CZ3500 range signal conditioners? Q2How to distinguish between active and passive signals? Take CZ3047 analog input signal conditioner as an example Q3Take CZ3047 analog input signal conditioner as an example. It has an independent power supply. Does it output active signals? Q4What are the differences between independent powered, loop powered and output loop powered Q5Can the analog input module be used as an analog output module? Q6How to calculate the conversion accuracy of the temperature input module? Q7What are the differences between isolated barriers and signal conditioners?
Q1What’s the function of SPD? Q2To use SPD or not? What are the standards refered? Q3How long can SPD lifetime be？ Q4How to select SPD for power? Q5How to select SPD for signal？ Q6How to select SPD for field instruments? Q7What should be cared when install SPD? Q8Why can SPD with Uc= 320vac be applied to 380VAC voltage system? Q9Why does backup fuse need to be installed with SPD for power? How to select it? Q10How to judge if SPD is functional?
Q1What is the difference between a safety relay and a general relay? Q2How to choose safety relay? Q3Are there recommended models for safety relays suitable for process control SIS systems? Q4Are there recommended models for safety relays suitable for process control SIS systems? Q5Is there a national standard that mandates that SIS systems must use safety relays? Q6Can ordinary relays be used in the SIS system? Q7What are the common faults and treatment methods of safety relays? Q8Is it necessary to use safety relays on mechanical equipment? Q9Is there a life cycle / year for the use of safety relays? Does it need to be replaced regularly? Q10Why should we pay attention to the start-up current of safety relays?
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