| 释义 |
megohmmeter, n. Electr.
Brit. |mɛgˈəʊmˌmiːtə|, U.S. |mɛgˈoʊ(m)ˌmidər|
Forms: 19– megohmeter, 19– megohmmeter
[Blend of megohm n. and ohmmeter n.]
An ohmmeter calibrated in megohms, used chiefly for measuring the electrical resistance of insulation materials.
1909Cent. Dict. (Suppl.) Megohmmeter, an instrument similar in type to an ohmmeter but suitable for the measurement of very high electric resistances. 1925Science 6 Feb. 160/1 On display..meg-ohmmeter, precision ammeters and volt-meters, [etc.]. 1969Strain 5 221 (title) A megohmmeter for the measurement of the insulation resistance of ceramic installations for strain gauges. 2002Electr. Constr. & Maintenance (Electronic ed.) 1 Dec. Time-saving tips include changing brushes, checking winding insulation with a megohmmeter, and machining commutators in place. |