Features & Applications:

Excessive moisture in concrete floor slabs and screeds creates all sorts of problems, from adhesive degradation, delaminating of the floor covering, condensation and blistering to movement and deterioration of the covering. Excess moisture can also lead to mold, mildew and the emission of harmful vapors. Ensure floor slabs and screeds are sufficiently dry by measuring to a depth of 3⁄4" with this nondestructive meter.

The CRH Moisture/RH meter enables you to carry out 4 individual tests:

1. Measure non-destructively and instantly the moisture content in concrete and gypsum flooring
2. Measure the relative humidity, temperature and dew point within the floor slab or screed using the (below surface) In-situ method
3. Measure the relative humidity, temperature and dew point above the surface of the floor slab or screed using RH hood test methods
4. Measure the relative humidity, temperature and dew point of the environment that the floor is being installed

In Moisture measuring mode it uses the principle of electrical impedance measurement to give accurate non-destructive moisture readings in concrete and gypsum floor screeds.
From Electrodes with special spring mounted probes on the base of the instrument, a low frequency signal is transmitted into the material being tested to measure the electrical impedance.
In Hygrometer mode it uses a solid state capacitive sensor RH probe to give accurate and fast relative humidity and temperature readings.

This Concrete Moisture and Relative Humidity meter is easy to operate and has a powerful micro controller, which processes the information received and accurately calculates the moisture content, relative humidity, temperature and dew point. Results are shown on the clear digital display. It has a high capacity non-volatile memory chip, which stores and retains its data. This information can be recalled at any time by scrolling and reading directly from the instrument's own display or downloaded to a PC for storage and inclusion on a spread sheet or report.

Excessive moisture in concrete floor slab and screeds can lead to a host of problems in all types of floor coverings such as: adhesive degradation, delaminating of the floor covering from the slab and within itself, condensation, blistering, movement and deterioration of the covering. In the case of wood flooring, excess moisture can lead to swelling, cupping and movement of the wood which can lead to floor failure and even structural damage. Excess moisture can also lead to mold, and mildew as well as the emission of harmful vapors. Most of these problems can be related to the floor covering being installed on a sub floor that is not sufficiently dry. It is therefore important to insure that the floor slab or screed is sufficiently dry enough to accept a covering.

Features:

• Two versatile measuring modes, measures moisture content plus relative humidity, temperature and dew point with plug in RH probe
• User can switch between moisture meter and hygrometer modes
• Non-destructive moisture measurement
• Stores up to 900 recorded readings in 30 files
• Recorded readings can be recalled and displayed on dot matrix LCD
• Download recorded reading to pc for transfer to word processing or spread sheet
• Choice of scales to suit different types of floor slabs and screeds
• Operates on time proven impedance measurement principle
• Instant readings on clear LCD display
  

Spec Summary:

MOISTURE MEASUREMENT MODE
Measurement:	Non-destructive impedance
Measurement range:	Concrete 0 to 7%
Anhydrite and Gypsum screeds:	0 to 12 (comparative) Reference 0 to 100
Resolution:	0.1% MC concrete
Housing material:	ABS plastic
HYGROMETER/RH MODE
Measurement:	Solid state capacitive RH sensor
Measurement range:	5 to 98% RH 14 to 120ºF -10º to + 50ºC
Resolution (RH):	0.1% RH, 1ºC
Housing material (PROBE):	Stainless steel
Power supply:	9volt PP3 lithium manganese battery
Software:	Supplied on customised CD
Stored readings:	900 readings in 30 files
Display:	Dot Matrix LCD
Interface:	RS 232 Serial
DIMENSIONS
CRH:	6 x 3 x 1.4''
Probe:	0.4' x 4.3''
WEIGHTS
CRH only:	0.77lbs