ACR Electronics SmartReader Plus Manual do Utilizador descarregar pdf (Página 31)

SmartReader Data Logger

ACR representative for pricing and availability on this probe.

Extending Probe Lead Lengths

The lead length of the Amprobe probes can be extended by splicing in up to 225m (750 ft.) of

2-conductor 18-gauge copper wire.

1.5.4 Specifications

Output Current: 260 mA DC full scale into 400 ohms.

Lead Length: 1.5m (5ft)

Accuracy: ±4% FS above 10% of range.

Ranges: A60FL / A65FL: 5, 25, 100, 250A

A70FL / A75FL: 10, 50, 250, 500A

Maximum Voltage: 1500 Vrms secondary to core

3000 Vrms (4200 Vpeak) lamination to case

1.5.5 Troubleshooting

The SmartReader 3 seems to give wrong readings. What is wrong?

· If your graphs seem incorrect, check the equation number assigned to the graph file.

This equation number must correspond to the model number and setting of the current

probe used. Refer to Setup in this chapter for a table of equations to use with the

various current probes and settings.

· If your Realtime readings seem incorrect, check the equation number assigned to the

logger channel you are viewing. Make sure it corresponds to the model number and

active setting of the current probe you are using.

· 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. However, if the readings

fluctuate widely (for example, the difference between the day and night time power

consumption), it may be necessary to attach two probes - one on a high range and the

other on a low range.

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ACR Electronics SmartReader Plus Manual do Utilizador Página 31