Gossen MetraWatt METRACAL MC, Operating Instructions Manual

Page: 27 / 84

GMC-I Messtechnik GmbH 27
V/Hz,
Ω
, Temperature, and A/Hz Measurements
5.2 Voltage Measurement
Notes Regarding Voltage Measurement
• The multimeter may only be operated with installed batteries or
rechargeable batteries. Dangerous voltages are otherwise not
indicated, and the instrument may be damaged.
• The multimeter may only be operated by persons who are ca-
pable of recognizing contact hazards and taking the appropriate
safety precautions. Contact hazards exist anywhere, where
voltages of greater than 33 V (RMS) may occur.
The test probes may only be only gripped up to the finger
guard. Do not touch the metallic test probes under any
circumstances.
• Avoid working alone when taking measurements which involve
contact hazards . Be certain that a second person is present.
• Maximum permissible voltage between the connector sockets,
(9 and 10) and ground (8) is 300 V for measuring category II.
• Be prepared for the occurrence of unexpected voltages at
devices under test (e.g. defective devices). For example,
capacitors may be dangerously charged.
• No measurements may be made with this instrument in
electrical circuits with corona discharge (high-voltage).
• Special care is required when measurements are made in HF
electrical circuits. Dangerous pulsating voltages may be
present.
• Be absolutely certain that the measuring ranges are not
overloaded beyond their allowable capacities. Limit values are
included in section 9, “Technical Data”, in the table entitled
“Measuring Functions and Measuring Ranges” in the
“Overload Capacity” column.
Scope of Functions, Voltage Measurement
Scope of Functions, Current Measurement via Current Clamp Sensor
Function
V AC / Hz TRMS
•
V DC
•
Frequency response, V AC
20 kHz
Function
Transformation Ratio
A AC / Hz
A DC
Hz (A AC)
... 10 kHz