Hello,
I bought a 3 1/2 digital panel dc amp meter with shunt. It is a 200 amp. Unknowing to me at the time i bought the instructions say to hook up a 200 amp load to it and then adjust a small potentimeter until the display reads 200 amp. My question is how do i calbrate it when i dont have a known 200 amp load. I bought the meter to use on a hygrogen generator i plan to use on my car. The amp meter is used to adjust the concentration of electrolite. The target amp load is 16 amps. I should have done more research because i dont need to measure any current over 50 amp. I should have got a 50 amp meter instead. Also i guess i need an isolated power source, cant use the same power source to power the meter that i want to measure current. Can I used a known value of a resister as a load to calibrate, and how can i isolate the power. I dont have alot of electronics experience . Thank you in advance. Forgot to mention meter came with a 200 amp 75mv shunt thanks
I bought a 3 1/2 digital panel dc amp meter with shunt. It is a 200 amp. Unknowing to me at the time i bought the instructions say to hook up a 200 amp load to it and then adjust a small potentimeter until the display reads 200 amp. My question is how do i calbrate it when i dont have a known 200 amp load. I bought the meter to use on a hygrogen generator i plan to use on my car. The amp meter is used to adjust the concentration of electrolite. The target amp load is 16 amps. I should have done more research because i dont need to measure any current over 50 amp. I should have got a 50 amp meter instead. Also i guess i need an isolated power source, cant use the same power source to power the meter that i want to measure current. Can I used a known value of a resister as a load to calibrate, and how can i isolate the power. I dont have alot of electronics experience . Thank you in advance. Forgot to mention meter came with a 200 amp 75mv shunt thanks