Truth Or Consequences?
http://www.solar-electric.com/mkb-500-50.html
http://www.circuitspecialists.com/lcd-panel-meter-pm-328.html
Provide circuit power from a nine-volt lithium battery and this ammeter will offer unparalleled accuracy for verification of ammeter accuracy.
Amperage is read as millivolts on the meter. 75 millivolts is full scale for the 500-amp shunt.
The resolution down to microvolts allows near lab grade precision readings. Once your regular instruments are verified against this meter you can compensate regular meter readings, and take the guesswork out of things. Use it meter versus meter direct without shunt on a 1-1/2 volt battery to qualify your digital multimeter voltage.
DMM Resistance (ohms) verification...
.5 ohm
100 ohms
10K ohms
Assortment is perfect for the hobbyist. Add 10 Mohms for the nerd.
http://www.precisionresistor.com/files/PDF/PRC-WEB-CATALOG-ISSUE-NO-42.pdf
I cannot even BEGIN to count the number of badly connected shunts, psychotic amp hour meters, dizzy volt meters, and other assorted cruiser's nightmares these verification tools have caught red-handed. When I board a sloop or ketch the instrumentation comes 2nd right after verifying there is or isn't a battery or charging issue.
Belief in a lying instrument has caused more wasted money and migraines than I would ever care to try and count. The only instrument I trust is my Tektronix and it gets calibrated and certified every 5-years.
How bad is "bad"?
It is commonly found an error of 3-6% in an amp hour meter. A lot of the errors are meter to shunt connection faults.
http://www.circuitspecialists.com/lcd-panel-meter-pm-328.html
Provide circuit power from a nine-volt lithium battery and this ammeter will offer unparalleled accuracy for verification of ammeter accuracy.
Amperage is read as millivolts on the meter. 75 millivolts is full scale for the 500-amp shunt.
The resolution down to microvolts allows near lab grade precision readings. Once your regular instruments are verified against this meter you can compensate regular meter readings, and take the guesswork out of things. Use it meter versus meter direct without shunt on a 1-1/2 volt battery to qualify your digital multimeter voltage.
DMM Resistance (ohms) verification...
.5 ohm
100 ohms
10K ohms
Assortment is perfect for the hobbyist. Add 10 Mohms for the nerd.
http://www.precisionresistor.com/files/PDF/PRC-WEB-CATALOG-ISSUE-NO-42.pdf
I cannot even BEGIN to count the number of badly connected shunts, psychotic amp hour meters, dizzy volt meters, and other assorted cruiser's nightmares these verification tools have caught red-handed. When I board a sloop or ketch the instrumentation comes 2nd right after verifying there is or isn't a battery or charging issue.
Belief in a lying instrument has caused more wasted money and migraines than I would ever care to try and count. The only instrument I trust is my Tektronix and it gets calibrated and certified every 5-years.
How bad is "bad"?
It is commonly found an error of 3-6% in an amp hour meter. A lot of the errors are meter to shunt connection faults.
