Manual Gossen Metrawatt METRAHIT ULTRA (page 44 of 74) (English)

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44 GMC-I Messtechnik GmbH

V/Hz, Ω, Temperature, and A/Hz Measurements

5.7.2 Alternating Current and Frequency Measurement,

Direct Connection, A AC and Hz

Ð First disconnect supply power from the measuring circuit or

the power consumer, and discharge any capacitors.

Ð In accordance with the current or frequency to be measured,

turn the rotary switch to A~ or Hz.

Ð Select the desired measured quantity by briefly pressing the

multifunction key FUNC | ENTER. Each time the key is pressed,

TRMS

and Hz are alternately selected, and switching is ac-

knowledged with an acoustic signal.

Ð Safely connect the measuring instrument (without contact re-

sistance) in series to the power consumer as shown.

Ð Switch supply power to the measuring circuit back on.

Ð Read the display. Make a note of the measured value if the in-

strument is not being operated in the memory mode or the

transmission mode.

Ð Disconnect supply power from the measuring circuit or the

power consumer once again, and discharge any capacitors.

Ð Remove the test probes from the measuring point and return

the measuring circuit to its normal condition.

COM mA A

050.100

I > 10 A

I > 16 A

Current measurement may only

be performed with installed bat-

teries!

Current

FUNC

ENTER

300 μA / 3 mA

3 A / 10 A (10 A max. 5 min)

Measuring Ranges:

30 mA / 300 mA

Additional temperature display

(internal temperature at jacks)

in the 3 A and 10 A ranges

.500

TRMS

24.6° C

(16 A max. 30 s)

03.500

TRMS

24.6° C

015

000

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Gossen Metrawatt METRAHIT ULTRA Manual

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