GENEQ > Materials > Humidity - Concrete

CRH Moisture Content and Relative Humidity Meter for Flooring

The world's most advanced moisture and relative humidity meter for the flooring industry. Excess moisture in floor slabs and screeds can cause numerous problems in all types of floor coverings leading to complete floor failure and even structural damage. Moisture testing a floor slab prior to installation of a covering make sense. Why take risk when testing can be done easily and quickly with a CRH meter for non-destructive moisture and relative humidity measurement of flooring.

4 INDIVIDUAL TESTS
  1. Measure non-destructive and instantly the moisture cntent 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-sity method
  3. Measure the relative humidity, temperature and dew point above the surface of the floor slab or screed using RH hood test method
  4. Mesure the relative humidity, temperature and dew point of the environment that the floor is being installed
The CRH allows you to carry out the most appropriate tests

MOISTURE MEASURING MODE
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.

HYGROMETER MODE
In hygrometer mode it uses a solid state capacitive sensor RH probe to give accurate and fast relative humidity and temperature readings

While being easy and uncomplicated to operate the CRH has a powerful micro controller, which processes the information received and accurately calculates the moisture content, relative humidity, temperature and dew point and displays it 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 spread sheet or report.

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
  • Operated on time proven impedance measurement principle
  • Instant readings on clear LCD display

NEED FOR THE CRH
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 slab and within itself, condensation, blistering, movement and deterioration of the covering. In the case of wood flooring excess structural damage. Excess moisture can also lead to mold, and mildew as well as the emission of harmful vapours. Most of these problems can be related to the floor covering being installed on a slub 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.

SPECIFICATIONS
Moisture Measurement Mode
Measurement Non-destructive impedance
Measurement Range Concrete 0 to 7%
Anhydrite & 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 120°F; -10 to 50°C
Resolution (RH) 0.1% RH, 1°C
Housing Materials Stainless steel
General
Power Supply 9V PP3 lithium magnanese battery
Software Supplied on customised CD
Stored Readings 900 redings in 30 files
Display Dot Matrix LCD
Interface RS232 Serial
Dimensions CRH 150 x 80 x 35 mm (6 x 3 x 1.4 in.)
Dimensions Probe 10 (dia) x 110 mm (long) (0.4 x 4.3 in.)
Dimensions CRH Kit 340 x 430 x 100 mm (13.4 x 17 x 1.6 in.)
Weight CRH 0.35 kg (0.77lbs); Shipping: 0.45kg (0.77lbs)
Weight Complete Kit in case 2.2kg (5.8lbs); Shipping 2.9kg (6.4lbs)