MRH Non-destructive moisture testing mode
The MRH is a digital display version of the Tramex Moisture Encounter MEP hand-held electronic
impedance moisture meter. It operates on the principle of non-destructive impedance
measurement. Parallel co-planar electrodes are mounted on the base which, during operation,
transmit a low-frequency signal into material under test.
To carry out moisture tests simply press the MRH firmly against the surface being tested and take a
reading.There’s no surface damage and no waiting.The MRH has 5 different measurement scales:
Wood, Roofing, Masonry, Drywall and Laminate.

WOOD MOISTURE PROBE Pin-type resistance meter mode.
When the Tramex Wood Probe is plugged into the MRH, it automatically changes to WOOD
PROBE MODE.The Tramex Wood Probe is a hand-held attachment designed to take
precise measurements of moisture content in wood and wood products. Using built-in pins, the
Wood Probe is easy to use, extremely accurate, giving readings in 0.1% increments over the entire
measurement range.
Readings are displayed on the LCD of the MRH.The Wood Probe offers a most practical and
accurate way of determining that wood is at the correct moisture level for its intended use, proving
to be a vital tool for good quality control of wood flooring and other wood applications.

RELATIVE HUMIDITY (RH) PROBE Hygrometer Mode
When the Tramex RH Probe is plugged into the MRH, it automatically changes to
Hygrometer Mode.The Tramex RH Probe provides the ideal solution for Measurements
of Humidity,Temperature and Dew-point in structural materials such as concrete flooring, walls
etc as well as the environmental conditions within the building or structure. Humidity readings
are displayed in both Percentage Relative Humidity (%RH) and mixing ratio (grains/lb or grams/kg).
The solid-state capacitive sensor in the RH probe gives accurate, fast results.
Allows testing of concrete slabs using the In situ (ASTM F 2170) or
RH hood (ASTM 2420, BS 5325 & BS 8203) methods.

The standard MRH Kit comes in a carrying case with die-cut foam lining and contains the following: MRH,
Wood Moisture Probe and a Relative Humidity Probe.

Optional extras are a slide action hammer electrode for measuring up to a depth of 1.5”
(37mm), an infra red thermometer for measuring the surface temperature and calibration
check salts for the relative humidity probe.