State the primary difference between a detector and a meter.

Select one:
A. They are two words for the same instruments.
B. Detectors are calibrated in standard units and meters are calibrated in metric units.
C. A meter simply detects the presence of a contaminant. A detector measures the amount of the contaminant.
D. A detector simply detects the presence of a contaminant. A meter measures the amount of the contaminant.

The primary difference between a detector and a meter is that a detector indicates the presence of a substance, while a meter quantitatively measures that substance. For example, dosimeters are detectors that also measure radiation levels. Therefore, the correct answer option is OD.

Explanation:

The Primary Difference Between a Detector and a Meter

The essential distinction between a detector and a meter lies in their primary functions. A detector is designed to detection and indicates the presence of a particular analyte or contaminant without providing quantitative measurements. In contrast, a meter is calibrated to measure specific quantities of that contaminant.

For instance, a dosimeter is a type of detector that monitors the amount of radiation exposure but it also serves the purpose of measuring this exposure quantitatively, thus functioning as a meter.

Correct Answer Option

Based on these definitions, the correct choice is:

OD. A detector simply detects the presence of a contaminant. A meter measures the amount of the contaminant.

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