Ht-instruments M71 Manuel d'utilisateur télécharger pdf (Page 13)

M71

EN – 12

4.3.3. Message description for EARTH 2W measurement

1. If the following condition is met:

R

DISPLAYED

< 0.11Ω

the instrument displays the symbol

indicating that the reading may be affected

by a relative error higher than 30%.

2.

If the following condition is met:

Disruptive voltage > 3.0V

the instrument displays the symbol

indicating that the reading is carried out

under critical conditions.

3.

If the following condition is met:

R

MEASURED

- R

CABLES

< - 0.03Ω

the instrument displays the side screen and

emits a long sound tone indicating an

anomalous condition then displays the initial

screen again. This message indicates that

the measured resistance is lower than that

of measuring cables and that a further zero

setting procedure is to be carried out.

4.

When measuring, if terminals' voltage is

higher than 6V, the instrument does not

effect the test. A long sound tone is emitted

indicating an anomalous condition and the

side screen is displayed for 5 seconds (S-E

indicates between which inputs voltage was

detected), then the instrument displays the

initial screen.

Value of input

voltage

5.

Should the resistance value be higher than

the full scale, the instrument emits a long

sound tone indicating the anomalous

condition and displays a screen similar to

the side one. The same indication may also

highlight that measuring cables are

disconnected or open.

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 25 26

Commentaires sur ces manuels

Pas de commentaire