irondesk40
Member
have something that i am confused about and hoping someone could get me going in the right direction.
Have inherited a chemical distribution system that has a slc500 plc and it is used to inject a certain amount of chemicals into a tank, depending upon what the operator enters.
the chemicals go through a flowmeter that gives 1 pulse for every 1/5 of a gallon.
operator will select for 1-50 gallons, depending upon chemical.
what i am wondering is what would be the best way to set up a routine to double check and calibrate to verify accuracy?
for example lets say you need to add 10 gallons, so after 50 pulse you would have the 50 gallons, but what if after the 50 pulses you only had 49.5 or 50.25 gallons. Confused on the best way to handle this.
I know we have some other chemical systems that are controlled by pc equipment, and when you calibrate them, you select to run a certain amount, for example 5 gallons. with these systems you would run the 5 gallons into a know bucket that is premarked to show the gallons in increments of 1/10 of a gallon. so after you select the 5 gallons, you check to see how much was actually put in the bucket, then there is a section in the menu on the screen to put in the actual gallons that was put in, it then goes in and calibrates this amount to be the 5 gallons.
Any suggestion on how to do this with a slc500?
sorta got me confused at the moment, so any advice would be greatly appreciated. Its just one of those things that for some reason, has me confused, ever have one of those? I know it must be a lot simpler than i am trying to make it in my mind, but just kicking my butt at the moment.
Thanks
Have inherited a chemical distribution system that has a slc500 plc and it is used to inject a certain amount of chemicals into a tank, depending upon what the operator enters.
the chemicals go through a flowmeter that gives 1 pulse for every 1/5 of a gallon.
operator will select for 1-50 gallons, depending upon chemical.
what i am wondering is what would be the best way to set up a routine to double check and calibrate to verify accuracy?
for example lets say you need to add 10 gallons, so after 50 pulse you would have the 50 gallons, but what if after the 50 pulses you only had 49.5 or 50.25 gallons. Confused on the best way to handle this.
I know we have some other chemical systems that are controlled by pc equipment, and when you calibrate them, you select to run a certain amount, for example 5 gallons. with these systems you would run the 5 gallons into a know bucket that is premarked to show the gallons in increments of 1/10 of a gallon. so after you select the 5 gallons, you check to see how much was actually put in the bucket, then there is a section in the menu on the screen to put in the actual gallons that was put in, it then goes in and calibrates this amount to be the 5 gallons.
Any suggestion on how to do this with a slc500?
sorta got me confused at the moment, so any advice would be greatly appreciated. Its just one of those things that for some reason, has me confused, ever have one of those? I know it must be a lot simpler than i am trying to make it in my mind, but just kicking my butt at the moment.
Thanks