the PLC control two motor (primary and secondary)
the tow motor is same function
the first motor receive the command from PLC to run at certain period and then deactivate
but the second motor continually receive the command without stop ,I've checked the all connection and switches all is...
hello every one:
I have PLC seimens S7-300 that installed with machine
but the PLC gives wrong commands in certain module , it is possible to restart the PLC without losing the user data in micro memory data
what is the major effect of this restarting
I am distilling purified water , but about poiling point that I tried to know !! may the pressure (if its not saturated pressure ) in the first effect increase the poiling point ?, how can I determine it? the information I have mentioned in drawing I attached
This system includes six vessels , the temperature of the output steam from the final vessel is 122.4 C (if it is still steam) ,
each vessel have demister at upper portion ,
zekeman : our major problem that the output steam from the last vessel is too low as you thought,the problem...
I try to explain my case in a simple drawing ,
you will note that the position of temp and pressure gauges
not the inlet purified water (PW) temperature (70 C)
http://files.engineering.com/getfile.aspx?folder=6afd9aba-c567-463a-8400-a5ae1eb75eab&file=evaporation.bmp
I measure the temperature and pressure at the top of the line.( at the same point)
I check that there is a steam raised from the output of the line
I still searching for the exact reason !!!!
thank you Katmar
I've measured at the same point
your assumption is correct it is bar gauge.
I've calibrated the pressure and temperature gauges and its working correct.
for more explanation:
the line is filled with purified water and its heated by industrial steam (heat exchanger)
the...
Dear ALL:
I have saturated steam line using in distillation unit with pressure 5.3 so the expected temperature is about 160 C , but actually the temperature is 140 C
what is the possibles causes for this case? can any body help me ???
hello
I found a failur transformer in the my device, it is variable output step down.
the transformer has no I/O plate, I haven't the service manual of this device , so i cant determine the specification of this transformer , is there any method to determine the specification of this...
Dear All
I'm working in pharma factory as calibration and validation engineer.
now I have received new responsibility about air balance , I have no experience in this field.
the factory have 7 AHU's controlled by BMS,
I have to make positive room pressure comparing with corridor.
the BMS...
