Digital Multimeter HTC Instrument DM-81

Specifications of Digital Multimeter HTC Instrument DM-81

• 1. DC Voltage
• Range Resolution Accuracy
• 200mV 0.1mV ±（1.2%+5）
• 2V 1mV
• 20V 10mV
• 200V 100mV
• 1000V 1V ±（1.5%+5）
• -- Input Impendency: 1MΩ@200mV&2V, effective @10MΩ for other ranges
• -- Overload Protection: 250V for 200mV & 2V range, effective DC or AC 1000V for other ranges
• 2. AC Voltage
• Range Resolution Accuracy
• 200mV 0.1mV ±（2%+5）
• 2V 1mV ±（1.8%+5）
• 20V 10mV
• 200V 100mV ±（1.5%+5）
• 750V 1V ±（2%+7）
• -- Input Impendency: 1MΩ@200mV&2V, effective @10MΩ for other ranges
• -- Frequency Range: 40Hz ~ 400Hz (40Hz~100Hz @200V/700V)
• -- Overload Protection: 250V for 200mV & 2V range, effective DC or AC 1000V for other ranges
• -- Response: average, calibrated in RMS of sine wave
• 3. DC Current
• Range Resolution Accuracy
• 2mA 1μA ±（1.5%+5）
• 200mA 100μA ±（2%+5）
• 20A 10mA ±（3%+5）
• -- Overload Protection: 200mA/250V fuse, 20A range without fuse
• -- Max Input Current: 20A (≤10 seconds)
• -- Measured by the voltage drop: full range as 200mV