hydrogen purity meter calibrating and commissioning
procedure can be explained?
In split range control, we will control 2 outputs with time interval. Eg :(with 4-20 ma signal, for 4-12 ma we are operating one control instrument like valve & for 12-20ma we are operating other control instrumet (other valve). If we get a signal of 15ma to first instrument (Valve 1), what will happened to the first valve, and if we get signal above 20 ma to 2 valve what will happened ?
Give 2 application of quartz crystal used for process parameter measurement.
What does a hookup diagram look like? can you give sample drawing. thanks.
What is mean by ATEX?
Boiler flame scanner working principle?
how will do square root transmitter calibration
Why DP level transmitter preferred for closed vessels and Radar level transmitter for open tanks??
what is orifice plate? Give me best answer?....plz
what is fire and gas system?
2 Answers Andhra Petrochemicals Limited,
Level in tank under vacuum (Ex: Condensate Tank of Power Plant)is measured using D. P. type level transmitter. Tank is subjected to vacuum of 755mmHg. Is it possible to fill wet leg ( i.e. leg connected to top of vessel with low point of D. P. xmtr) with water?. Are there chances of water getting sucked under vacuum? if yes, what is the solution?
What are the advantages and benefits of using PLCs to automate a section of a plant?
What is an SCR?
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