METRON QA-90, Руководство пользователя и обслуживания

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1-2
The current measurement may be executed in lead no. 1 (live).
Range 1 0 - 1000 mA RMS (@ <250VAC)
Resolution 1 mA
Accuracy
±
2% of full scale
±
1 LSD
No. of Tests 1 or multiple
Range 2 1 - 16A RMS (@ <250VAC)
Resolution 1 mA
Accuracy
±
1% of full scale
±
1 LSD
No. of Tests 1 or multiple
3. Protective Earth
The test current is selectable from 25A or 1A, delivered from a transformer
with a maximum idle voltage of 6V. The measurement can be performed
on ground leads or between E+ and E- (floating inputs/outputs).
Range 0 - 2000 mOhm
Resolution 1 mOhm
Accuracy
±
2% of full scale
±
1 LSD
No. of Tests 1, 2, or multiple
4. Insulating Resistance
The measurement of the insulating resistance may be executed between
casing and power unit, or between patient module and power unit.
Test voltage:
500VDC through a 130 kOhm limiting resistor.
No. of Tests: 1, 2 or multiple
Range 1 - 50 mOhm
Resolution 1 mOhm
Accuracy
±
2% of full scale
±
1 LSD
Range 51 - 200 mOhm
Resolution 1 mOhm
Accuracy
±
2% of full scale
±
1 LSD
5. Leakage Currents
All measurements can be performed with a IEC 601.1 filter (patient equiva-
lent), or without (flat frequency response). The filter can be exchanged with
filters covering other standards. All measurements can be performed as
true RMS measurements, or AC/DC measurements.
The following leakage currents can be measured:
Ground leakage current No. of Tests: 4
Enclosure leakage current No. of Tests: 6 or multiple