Multimeter for measuring different quantities at will

摘要

When in multimeters which have various input circuits in each case allocated to a particular measurement quantity for detecting the measurement signals a wrong input circuit not corresponding to the position of the measuring range switch is connected, this input circuit and thus the multimeter can be endangered. To prevent a wrong input circuit from being connected, a non-rigid coupling device (H1, H2) between the input circuit switch (6, 7) and the measuring range switch (S) ensures that at least one input circuit (a, b) can only be switched in when its associated measurement variable (A, B) corresponds to the measurement variable (A, B) predetermined at the measuring range switch (S). IMAGE