HM-668A Concrete Moisture Encounter 4 is a non-destructive hand-held meter for immediate measurement of moisture content on concrete floor surfaces before installing floor covering. It is equipped with an analog dial display that shows readings of 0—6% moisture in concrete or 0—10% moisture in gypsum. A “Hold” button freezes the display. The unit is user calibrated at the start of each use for accurate repeatable readings. The meter is powered by a replaceable 9V battery, included, and has an LED low battery indicator. The unit also includes a zippered storage pouch.
- Three sensitivity ranges
- Audible warning tone indicates high moisture content
- Concrete Moisture Encounter 4
- Storage Pouch