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53
2) OHM
Due to accuracy reasons, the resistance output must be adjusted using 4-wire resistance reading method
see figure 5 (H). Initially, the polarity of the wires is not important as the excitation current can flow in one or the other
direction - from RTD1 to RTD2 terminal or from RTD2 to RTD1 terminal.
The adjustment should be performed for both ranges: 400 and 2500 .
This field shows the step of this range adjustment.
It consists of 10 steps. In steps STEP1 to STEP4, the signals are output and should be measured and
stored, by pressing "ENTER". At transition from STEP3 to STEP4, the display shows "CHANGE CURRENT
DIRECTION". At this time, exchange the banana plugs connected to RTD1 terminal with the ones connected to RTD2
terminal and press "ENTER". After that the adjustment continues up to STEP4. Steps 5 and 6 output signals only for
verification purpose and no values are stored.
V
mV
mA
STEP 1
400
2500
STEP 4
0.00000 V
0.000 mV
0.00000 mA
STEP 9
0.00
0.0
STEP 5
11.00000 V
110.000 mV
11.0000 mA
STEP 10
400.00
2500.0
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