RH Meters and Thermohygrometers
Measure the humidity within a concrete slab and within other dense substances with an RH meter, or relative humidity meter. RH meters can be used in various applications. For example, with its probes positioned deeply within a concrete slab structure (AKA “in situ”), the humidity data generated by the RH meter can be used to determine whether the concrete foundation or slab is dry enough to be built upon. Thermohygrometers also provide readings on humidity, but in air rather than solids, and they present that data as a percentage. Thermohygrometers also typically measure air temperature. Items in this category can vary by compatibilities, inclusions, temperature ranges, RH ranges, battery types, special features and applications (such as agriculture, petrochemical, food manufacturing, freezers and coolers, dry storage bins, and so on). All that said, the line is often blurred between the roles of RH meters and thermohygrometers, so check the specs closely and find the unit that will work best for your purposes. For more on the measurement, readout, and data transmission concerning temperature and humidity, see our dial thermometers, temperature probes, and temperature and humidity transmitters.