12
Current Measurement
Typical Measurements and Accuracy
(cont’d)
Flame Sensor
Control
Board
Pilot Flame
μA
AmpTip™ Function
μA DC Current
μDC Current
(CMH-1000 and CMI-1000 only)
Range Accuracy
Burden
Voltage
200.0 μA
± (1.0% + 0.5 μA)
3.5 mV/μA
2000 μA
± (1.0% + 5 μA)
A
Hz
AmpTip™ AC Current
Range
Accuracy Range
Accuracy at
40 Hz to 100 Hz†
Accuracy at
100 Hz to 400 Hz†
60.00 A
0.00 A to 3.99 A
± (1.5% + 0.15 A)
± (2.0% + 0.15 A)
4.00 A to 60.00 A
± (1.5% + 0.05 A)
± (2.0% + 0.05 A)
† Induced error for adjacent current carrying conductors is < 0.02 A/A.
AmpTip™ DC Current (CM-1560 and CMI-1000 only)
Range
Accuracy Range
Accuracy†
60.00 A
0.00 A to 3.99 A
± (1.5% + 0.15 A)
4.00 A to 60.00 A
± (1.5% + 0.05 A)
† Induced error for adjacent current carrying conductors is < 0.02 A/A.
AmpTip™ DC + AC Current (CM-1560 and CMI-1000 only)
Range
Accuracy Range
Accuracy at DC,
40 Hz to 100 Hz†
Accuracy at
100 Hz to 400 Hz†
60.00 A
0.00 A to 3.99 A
± (2.0% + 0.17 A)
± (2.2% + 0.17 A)
4.00 A to 60.00 A
± (2.0% + 0.07 A)
± (2.2% + 0.07 A)
† Induced error for adjacent current carrying conductors is < 0.08 A/A.
Note: Use Δ if there is an offset before the measurement is taken.
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