Meterman DM73B, Руководство оператора

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mains supply.
Safety: Conforms to EN61010- 1: Cat II - 600V; CAT III - 300V , Class
2, Pollution degree II; UL3111-1. EMC: Conforms to EN61326
This product complies with requirements of the follow-
ing European Community Directives: 89/ 336/ EEC
(Electromagnetic Compatibility) and 73/ 23/ EEC (Low
Voltage) as amended by 93/ 68/ EEC (CE Marking). However, electri-
cal noise or intense electromagnetic fields in the vicinity of the equip-
ment may disturb the measurement circuit. Measuring instruments will
also respond to unwanted signals that may be present within the
measurement circuit. Users should exercise care and take appropriate
precautions to avoid misleading results when making measurements
in the presence of electronic interference.
Electrical Specifications
Accuracy at 23°C ± 5°C, < 75 % RH, guaranteed for one year.
DC Volts
Ranges: 340mV, 3.4, 34, 340V, 600V
Accuracy: ± (0.5% rdg + 2 dgt)
Input Impedance: 340 mV range: >100M
Ω , other ranges: 10M Ω
Protection: 600VDC or AC rms
AC Volts
Ranges: 3.4V, 34, 340, 600V
Accuracy: ± (1.5 % rdg + 8 dgt) (50 - 500Hz)
Input Impedance: 10M Ω
Protection: 600VDC or AC rms.
Resistance
Ranges: 340 Ω , 3.4, 34, 340 k Ω , 3.4, 34 M Ω
Accuracy:
340 Ω - 340k Ω : ± (1.0 % rdg + 4 dgt)
3.4M Ω : ± (1.5 % rdg + 4 dgt)
34 M Ω : ± (3.0 % rdg + 5 dgt)
Max. open circuit voltage: 340 Ω range - 1.2V; all others: - 0.45V
Protection: 500VAC or DC.