I have a K8047 data-logger that I wish to use mainly as a DVM
when I compare the voltages displayed in the DVM display with those measured on a digital multimeter (Amprobe DM7C)
there is a bout 1 volt difference with the data-logger reading lower than the meter
is there anyway i can calibrate the voltages read by changing component values in the circuit?
There is no possibility to calibrate the K8047.
The 1V error is not normal.
I made a quick test:
On 6V range:
Measured input voltage: 3.39V
K8047 displayed: 3.34V
Error compared to full scale: 0.8%
On 15V range:
Measured input voltage: 9.34V
K8047 displayed: 9.24V
Error compared to full scale: 0.7%
On 30V range:
Measured input voltage: 12.46V
K8047 displayed: 12.24V
Error compared to full scale: 0.7%
Do you have errors on all voltage ranges?