Campbell-scientific CS11-L Current Transformer Uživatelský manuál stáhnout pdf (Strana 33)

Appendix A. Theory of Operation

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-20

-40

-60

-80

Samples

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1250

1200

1150

1100

1300

1350

1400

Samples

1250 mV Offset (needed for CR200X)

0 mV Offset for Dataloggers other than CR200X

FIGURE A-8. Adding 1250 mV creates positive output

1000

500

1500

2000

2500

Adjusted Measurement Range

mV signal CR200X

FIGURE A-9. CS11-L measurement range

A.6 Multiple Passes Through the Sensor

Multiple passes can pass through the sensor to amplify the signal of the

amperage being measured (FIGURE A-10). However, the multiplier will need

to be changed, depending on how many passes through the sensor.

The range code needs to be changed to match the number of wire

passes through the sensor.

NOTE

Passes New Multiplier Range Code

2 0.1 x2

4 0.05 x4

5 0.04 x5

8 0.025 x8

10 0.02 x10

20 0.01 x20

A-5

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Campbell-scientific CS11-L Current Transformer Uživatelský manuál Strana 33