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Testing the Resistance Function

To verify the accuracy of the resistance function, do the following:

1.Connect the calibrator to VΩ and COM on the meter.

2.Turn the rotary switch to Ω.

3.Apply the inputs for step 1-4 in Table 3.

4.Compare the meter display readings to the display readings in Table 3.

5.If the display reading falls outside of the range shown in Table 3, the meter does not meet specification.

Table 3 Resistance Test:

Step

Source

Reading

 

 

 

1

100 Ω

97 to 103

 

 

 

2

180 Ω

176 to 184

 

 

 

3

1000 Ω

988 to 1012

 

 

 

4

1800 Ω

1780 to 1820

 

 

 

Max. Open Circuit Voltage: 3V

Continuity check: Beeper sounds if the resistance of the circuit under test is less than 25 Ω. It will then turn off if the resistance is increased beyond 400 Ω.

Amp (A) Function

1.Turn the rotary switch to A position.

2.Refer to Figure 1 and disconnect probes from probe test points.

3.Place the conductor anywhere within the sensor zone as shown in the shaded areas of Figure 2.

4.Apply the inputs for steps 1 - 4 in Table 4.

5.For each input, compare the reading on the meter display to the reading in Table 4.

6.If the display reading falls outside of the range shown in Table 4, the meter does not meet specification.

Table 4 ACA Test:

Step

Source

Frequency

Reading

 

 

 

 

1

19.0A

50Hz

18.1 to 19.9

 

 

 

 

2

19.0A

500Hz

18.1 to 19.9

 

 

 

 

3

190.0A

50Hz

184.0 to 196.0

 

 

 

 

4

190.0A

500Hz

184.0 to 196.0

 

 

 

 

Form number TM61095

Rev 2 September 2002

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IDEAL INDUSTRIES 61-095 Testing the Resistance Function, Resistance Test Step Source Reading, Amp a Function