TRAMEX CME 4 Manuale utente

CME4 MOISTURE

METER

FOR CONCRETE

CONCRETE MOISTURE ENCOUNTER

www.tramexmeters.com

FEATURES

Clear easy-to-read analog dial.

No need to probe, drill or

mechanically damage the surface.

Instant and precise readings to a

depth of approx. ¾"into the slab.

Non-destructive in operation.

Hold function “freezes” meter

reading when inspecting areas

where the meter face is not visible,

and for easy recording of data.

Reproducible results.

Spring-loaded contact pins

compensate for uneven concrete

and boost signal penetration.

Instant and non-destructive tests per ASTM F2659 with the Tramex CME4, a

non-invasive handheld electronic instrument used for testing moisture condi-

tions in concrete slabs and giving comparative readings in other cementitious

ﬂoor screeds. Precise and easy to use, the CME4 allows the user to make

multiple tests over a large area in the shortest possible time.

Screeds and concrete

ﬂoors must be dry before

a ﬂoor covering is

installed.

Don’t take risks with

excess moisture!

Moisture test before you

install a ﬂoor covering.

CME4-US 01/16 REV.1.1

CME4 Calibration check plate CALCRH

Product order code: CME4

ASTM F2659

CME4-EU 07/13

PRODUCT DESIGN HOW IT WORKS

The CME4 Concrete Encounter detects and

evaluates the moisture conditions within the

slab or screed by non-destructively measuring

the electrical impedance. A low frequency

electronic signal is transmitted into the material

under test via the electrodes in the base of the

instrument. The strength of this signal varies in

proportion to the amount of moisture present in

the material. The CME4 determines the strength

of the current and converts this to a moisture

content value for concrete slabs and a compara-

tive value for other cementitious ﬂoor screeds,

displayed on a large clear analog dial.

OPERATING PROCEDURE

To carry out tests simply brush any dust from a

smooth area of concrete and also from the

electrodes, switch on the Concrete Encounter

CME4 and place it ﬁrmly onto the surface, fully

compressing the spring-loaded, signal-enhancing

contacts on the base. Read the moisture content

from the clear analog dial.

The CME4 is calibrated to give percentage

moisture content readings on clean, bare dust free

concrete ﬂoor slabs, with a depth of penetration of

approx. ¾". Readings taken on concrete slabs

through paint, coatings, adhesives or other

materials on the surface should be regarded as

qualitative or comparative and not quantitative.

SPECIFICATIONS

Size: 6" x 3.5" x 1.5" (150mm x 85mm x 38mm)

Weight: 9.84oz (279g)

Construction: ABS Body

Power: 9 volt PP3 Battery (included)

Display: Analog

Depth of penetration: approx. ¾" (20 mm)

MEASURING RANGE

Moisture Content for Concrete 0 to 6%

Comparative for Gypsum floor screed 0 to 10

Reference scale

0 to 100

CME4

concrete encounter07/2016

user guide

USER GUIDE

Introduction...........

..................................................

..2

How it works................

.............................................

Instrument Features.....

..........................................

4-6

Working with the

CME 4......................................

7-8

Drying time for concrete floors and screeds.........7

Pre-test conditioning and preparation.

..................

Operating Instruction............................................9-11

Limitations.........................

.........

..........................

..12

Calibration...............................................................12

Warranty........................

..........................................

Product development....

........................................

...14

Safety............................

........................................

...14

Notes...................................................................15-16

TABLE OF CONTENTS

USER GUIDE

INTRODUCTION

Thank you for selecting the CME4 Concrete Encounter

from Tramex.

The Concrete Encounter utilises “state of the art”

electronic technology to provide the flooring industry with

an accurate and simple to use non-invasive handheld

instrument for nondestructive testing (NDT) of Moisture

Content (MC) in concrete and compartive moisture

readings in gypsum and other floor screeds. It has been

designed for the Flooring, Water Damage Restoration,

Inspection/Surveying and Indoor Air Quality industries.

To get the maximum benefit from the Tramex CME4, it is

suggested that you read this manual to familiarize yourself

with the instrument and its capabilities, before

undertaking any flooring tests.

Why should a test be done ?

When should a test be done ?

New floor slabs and screeds that are insufficiently dry

before flooring is posed, and high moisture content in

existing floor substrates can cause a host of costly flooring

system failures. Testing allows for confidence in a job well

done that meets manufacturer’s recommendations, official

standards and customer satisfaction.

New floor slabs and screeds should be tested regularly

during the drying period, to help evaluate and control the

drying process, and ensure that the substrate has reached

sufficient dryness before the floor covering is installed.

For the purpose of restoration, testing can be done on

existing screeds to evaluate the extent and source of water

damage, as well as controlling the drying process.

USER GUIDE

This field penetrates the material under test. A very small

alernating current flows through the field. The CME4

detects this current, determines its amplitude and converts

it to a moisture content value. By simply pressing the

CME4 down on the surface in strategically chosen

locations, instant readings can be taken over a large area.

HOW IT WORKS

The CME4 detects and evaluates the moisture conditions

within the cementitious slab or screed by

non-destructively measuring the electrical impedance,

which varies in proportion to the moisture content in the

material under test. The electrical impedance is measured

by creating a low frequency alternating electric field

between the parallel co-planner electrodes as illustrated in

the diagram below.

USER GUIDE

INSTRUMENT FEATURES

A diagram of the instrument face with brief notes on the

push button controls and LED indicators is shown below.

1 =

Moving coil meter.

2 = Hold – flashing LED.

3 = Power ON Led.

4 = Power ON/OFF button.

5 = Hold button.

154 mm

84mm

USER GUIDE

The lower LED illuminates when the ON/OFF

button is pressed and remains on until the CME 4

automatically powers off.

The upper LED flashes when HOLD is selected.

If the battery is nearing the end of its useful life,

both LEDs flash sequentially for 3 seconds at each

power ON to indicate that the battery should be

replaced.

INSTRUMENT FEATURES

Your Concrete Encounter CME 4 employs advanced

analog and digital technology to enable the incorporation

of many new features which greatly extend the capability

of the instrument.

Two simple push button controls, ON/OFF and HOLD.

Concrete moisture readings, 0% to 6%, are displayed

on a clear easy to read moving coil meter with linear

scale.

Comparative or qualitative readings for gypsum and

other floor screeds are shown on a 0 to 10 scale.

A reference scale of 0 to 100 .

To conserve battery life, the instrument automatically

powers OFF after 10 minutes of inactivity.

Power remains on if a change in meter reading is

detected or any button is pressed.

Two LED (light emitting diode) indicators.

USER GUIDE

HOLD button freezes needle on moving coil meter, to

facilitate ease of recording readings.

If HOLD was selected prior to the CME4

automatically powering off, the frozen meter reading

is digitally memorized and restored next time

ON/OFF is selected.

USER GUIDE

WORKING WITH THE CME4

Drying time for concrete floors and screeds

Concrete floors and screeds must be allowed to dry to an

adequate level before the installation of floor coverings or

application of coatings. Manufacturers of such systems

generally require moisture testing to be performed before

installation or use on a floor slab.

Excessive moisture in a floor slab after the installation of a

floor covering or coating can cause failures such as

condensation, blistering, delaminating, movement and

general deterioration of the finished flooring/coating.

There is also a risk of promoting microbial growth.

No exact period can be specified for the drying of such

floors as this is affected by temperature and humidity

within the building as well as concrete curing times and

other factors. Typically a period of at least 3 to 4 weeks per

1inch (25mm) depth of concrete or sand/cement screed

needs to be allowed. Longer periods may be required in

areas of high humidity or low temperature. During the

drying period and prior to applying the floor covering, the

floor should be regularly checked to monitor moisture

content with the CME4.

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