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Sperry instruments DM4050 User Manual

Sperry instruments DM4050
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4
BATTERY AND FUSE REPLACEMENT
1. If “ ” appears in the display, it is indicating that the battery should be replaced.
2. Turn the meter on it’s face and remove the 2 screws.
3. Remove the back panel and locate the battery or fuse.
4. Replace the battery or fuse, re-attach the back cover and re-install the screws.
CAUTION
Before attempting to open the case, be sure to disconnect the test leads to avoid electrical shock.
ACCESSORIES
• Operator’s instruction manual
• Set of test leads
• 9-volt battery, NEDA 1604 6F22 type.
• Fuse (500mA/250V)
TECHNICAL SPECIFICATIONS
DC VOLTAGE
RANGE RESOLUTION ACCURACY
200mV 100μV
±(0.5% of rdg + 3D)
2000mV 1mV
±(0.8% of rdg + 2D)
20V 10mV
200V 100mV
1000V 1V
±(1.0% of rdg + 2D)
OVERLOAD PROTECTION: 220V rms AC for 200mV range
and 1000V DC or 750V rms for all ranges.
AC VOLTAGE
RANGE RESOLUTION ACCURACY
200V 100mV
±(1.2% of rdg +10D)
750V 1V
RESPONSE: Average responding, calibrated in rms of a sine wave.
FREQUENCY RANGE: 45Hz ~ 450Hz
OVERLOAD PROTECTION: 1000V DC or 750V rms for all ranges.
DC CURRENT
RANGE RESOLUTION ACCURACY
200μA 0.1μA
±(1.8% of rdg +2D)
2000μA 1μA
20mA 10μA
200mA 100μA
±(2.0% of rdg +2D)
10A 10mA
±(2.0% of rdg +10D)
OVERLOAD PROTECTION: 500mA 250V fuse (10A range unfused).
MEASURING VOLTAGE DROP: 200mV
RESISTANCE
RANGE RESOLUTION ACCURACY
200Ω 100MΩ
±(1.0% of rdg +10D)
2000Ω 1Ω
±(1.0% of rdg +4D)
20KΩ 10Ω
200KΩ 100Ω
2000KΩ 1KΩ
MAXIMUM OPEN CIRCUIT VOLTAGE: 3.2V.
OVERLOAD PROTECTION: 15 seconds maximum 220Vrms.

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Sperry instruments DM4050 Specifications

General IconGeneral
BrandSperry instruments
ModelDM4050
CategoryMultimeter
LanguageEnglish

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