Troubleshooting; Applications - ACR Electronics OWL series Reference Manual

OWL Data Loggers
25
1.5.5

Troubleshooting

The OWL Electric Current logger seems to give wrong readings. What's wrong?
· If the graphs seem incorrect, check the equation number assigned to the graph file.
This equation number must correspond to the model number of the current probe used.
Refer to
probes and settings.
· If your equation numbers are correctly assigned and you are still getting incorrect
readings, it may be because you are measuring currents below 10% of the range. To
correct this, make sure the range setting on the probe is at the lowest possible range
that will encompass the readings you are interested in. For example, do not use the
250 amp range for recording currents below 25 amps. Use the 25 amp setting instead
as it offers ten times the resolution of the 250 amp range.
1.5.6

Applications

· checking air conditioning and mechanical equipment
· auditing energy use in commercial buildings
· determining tenant electrical consumption
· tracking environmental conditions
· confirming control sequences
100 10 to 100 A
250 25 to 250 A
Setup in this chapter for a table of equations to use with the various current
250 25 to 250 A
500 50 to 500 A
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