3
2 REFERENCE CONDITIONS
Temperature: 23ºC±2ºC
Humidity: 45%RH±5%
Position: horizontal±2°
Ensure that the pointer is at zero before starting any measurements.
Zero adjustment: open the device. Mechanical zero adjustment is carried out by turning the screw on the back of the null
meter.
Ensure that the switch is correctly positioned.
When an estimated measurement is unknown, place the switch at the highest caliber, and then gradually reduce it until the
appropriate caliber is achieved: the reading should preferably be in the upper 2/3 of the range.
3 SPECIFICATIONS
3-1 DC VOLTAGE
Connect the leads to the multimeter (be careful of switch position, see below) and connect to the circuit to be controlled.
When an estimated measurement is unknown, place the switch at the highest caliber, and then gradually reduce it until the
appropriate caliber is achieved.
To obtain voltage in V, multiply the appropriate range value by the reading coefficient indicated in the table.
VDC 100mV 2.5V 10V 25V 50V 250V 500V 1000V
Range(indication) 100 25 100 25 25 25 25 100
Reading coefficient ×1 ×0.1 ×0.1 ×1 ×2 ×10 ×20 ×10
Internal resistance 2kΩ 50kΩ 200kΩ 500kΩ 1MΩ 5MΩ 4.5MΩ 9MΩ
Accuracy 1.5%
Admissible overload 600V 240V 420V 600V 600V 600V 600V 1200V
3-2 AC VOLTAGE
VAC 10V 25V 50V 250V 500V 1000V
Range(indication) 100 25 25 25 25 100
Reading coefficient ×0.1 ×1 ×2 ×10 ×20 ×10
Internal resistance 90kΩ 225kΩ 450kΩ 2.25MΩ 4.5MΩ 9MΩ
Accuracy 2.5%
Bandwidth 45~1kHz 45~150Hz
Admissible overload 320V 470V 600V 600V 600V 1200V
The presence of a DC component falsifies the measurement.
3-3 DC CURRENT
Connect the leads to the multimeter and connect in series in the circuit with:
-the red lead in terminal “A”, up to 1000mA,
-the red lead in the “10A” terminal for 10A DC and AC caliber
Cut power supply before switching.
To obtain intensity in μA, mA or A, multiply the value on the appropriate scale by the reading coefficient indicated in the
table.
