How do you read the value when using the ohm range of a multimeter?
Generally, there are three groups of scales on the surface of a multimeter. One group is a linear scale: both voltage and current use this group of scales. The maximum value (at the far right end) of this group of scales is the range of voltage and current, and the reading can be made according to equal divisions. (Among this group, only the 10V AC voltage range is separate.) The innermost circle is a logarithmic scale - the decibel scale. The outermost circle is for the resistance range, and the reading method is from right to left. The right side is 0 and the left side is infinity. The central resistance value is the internal resistance of this range. The actual value is equal to the reading on the surface multiplied by the multiplier.
When set to the 200 ohm range, the unit of the displayed number is ohm;
The unit displayed in the continuity range is also ohm;
When set to the kilo-ohm range, the unit of the displayed number is Kohm;
When in the megohm range, the unit displayed is megohm.
For the resistance range of 200 ohms, the unit is ohm.
Both the 2K and 20K ranges have the unit of kilo-ohm.
So, adding the unit to the reading gives the true value.
Since the maximum range of the 200 ohm range is 200, a reading of 30 is acceptable.
However, the maximum range of the 2K range is 2, and it will not display 30.
The maximum range of the 20K range is 20, and it will not display 30 either.
If the readings are all 1, then they are 1 ohm, 1 kilo-ohm, and 1 kilo-ohm in sequence.
For the resistance range of 200 ohms, the unit is ohm. Both the 2K and 20K ranges have the unit of kilo-ohm. So, adding the unit to the reading gives the true value. Since the maximum range of the 200 ohm range is 200, a reading of 30 is acceptable. However, the maximum range of the 2K range is 2, and it will not display 30. The maximum range of the 20K range is 20, and it will not display 30 either. If the readings are all 1, then they are 1 ohm, 1 kilo-ohm, and 1 kilo-ohm in sequence.
