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Temperature:
23°C ± 2K
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 transparent cover 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 calibre,
then gradually reduce it until the appropriate calibre is achieved: the reading should
preferably be in the upper 2/3 of the range.
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
•
calibre, then gradually reduce it until the appropriate calibre is achieved.
To obtain voltage in V, multiply the appropriate range value by the reading
•
coefficient indicated in the table.
150mV
V DC
(1)
Range
15 (a)
(indication)
Reading
x 10
coefficient
Internal
3kΩ
resistance
(2)
Accuracy
(3)
Admissible
440V
overload
(fuse)
(1) Inputs between "COM" and "A" terminals, the other calibres between "COM" and "V Ω" terminals.
(2) Specific R: 20kΩ/V
(3) in % of end of range
(4) for 1 minute
(5) for 20 seconds
2 - REFERENCE CONDITIONS
3 - SPECIFICATIONS
0.5V
1.5V
5V
50 (b)
15 (a)
50 (b)
x 0.01
x 0.1
x 0.1
10kΩ
30kΩ
100kΩ
320V (4)
440V (5)
15V
50V
15 (a)
50 (b)
x 1
x 1
300kΩ
1MΩ
2%
500V
1000V
12
150V
500V
1500V
15 (a)
50 (b)
15 (a)
x 10
x 10
x 100
3MΩ
10MΩ
30MΩ
1500V
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