Moisture

The term "Moisture is often confused with "humidity". Humidity or better relative humidity is defined as "the ratio of the partial pressure of water vapour in the mixture to the saturated vapour pressure of water at a prescribed temperature."

Products to define humidity and other climatic parameters are presented in our section Climatic Conditions. Moisture refers to the presence of a liquid, especially water, often in trace amounts. The moisture content of materials to be coated is an important parameter. Fresh concrete for example has a very high moisture content....

The term "Moisture is often confused with "humidity". Humidity or better relative humidity is defined as "the ratio of the partial pressure of water vapour in the mixture to the saturated vapour pressure of water at a prescribed temperature."

Products to define humidity and other climatic parameters are presented in our section Climatic Conditions. Moisture refers to the presence of a liquid, especially water, often in trace amounts. The moisture content of materials to be coated is an important parameter. Fresh concrete for example has a very high moisture content. The moisture evaporates through the surface of that concrete. If the surface is closed off with a non-permeable coating layer the moisture is trapped and will cause damage to the coating over time. The same goes for timber which is not kiln- or air dried. Coating of moist materials often leads to adhesion failures. The moisture of a substrate is not just critical for coatings also (wooden) flooring, wall paper or other materials that cover a substrate will demand a certain moisture content of that substrate. Further moisture can be found in powder or grain-like materials such a cereals, pigments, powder coatings etc.. There various systems to define the moisture content of a material.

Electrical conductivity / resistance and impedance
These instruments measure the resistance of an electrical signal between points at the material to be measured. Various techniques are being used to enhance accuracy. There a simple instruments that just provide an indication of the moisture content but also sophisticated gauge that provide accurate readings. This kind of meters are often used to measure in solid materials like timber, concrete, masonry etc..

Reagent pressure test or carbide test
This system is based upon a chemical reaction of water with carbide. A defined quantity of material to be measured and carbide is placed in a special closed container and then mixed. The reaction of the water in the material and the carbide creates a pressure which can be read on the pressure gauge which is integrated in the container. There is a direct ration between the pressure and the water content. This type of test are not so easy to perform but the results are very accurate. Often these test are done on concrete or stone.

Gravimetric or moisture balance
This method is based upon the loss of weight of a material after it is dried. A special analytic balance is used to measure the total weight of the sample. Than the sample is dried with a special device which is integrated in the balance. The evaporation of the moisture will reduce the weight of the sample. When the weight of the sample remains stabile it indicates all moisture has been taken out of the material and the drying process stops. The difference between "wet" and "dry" sample is an accurate indication of the moisture content. This type of test is mainly used for grain- shaped materials or powders.

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BASIC INSPECTION KIT

To fulfill the demand of many companies in the line of paint and their customers we composed the “Basic Inspection Kit”. In the field the need had arisen of one standard measuring set to perform all measurements and test...

BRADLE

The TQC bradle is extremely sturdy, with an ergonomically shaped grip. It's the perfect tool for inspecting dry rot in timber. Dry rot is not always visible, especially when water-based paints with high elasticity have been used. ...

CAISSON V1D6 NON-DESTRUCTIVE WOOD MOISTURE DETECTION METER

Non-destructive instrument for measuring moisture levels in wood. Measures up to a depth of approx. 20 mm. The instrument contains the calibration lines or 25 different types or wood, guaranteeing a high degree or accuracy. The sele...

CARBIDE - METHOD HYGROMETER

High precision destructive S2000 measuring system for detecting moisture in concrete, sand cement and other bricky material. The water present in the sample reacts (chemically) with calcium carbide. This produces pressure in the ves...

CARBONATATION LIQUID

A liquid, which determines whether a concrete surface is alkaline or acidic. Indispensable when painting or repairing concrete. Obtainable in 250ml. bottles with a handy pump-action atomiser.

COMBISCAN NON-DESTRUCTIVE WOOD MOISTURE DETECTION METER

CombiSCAN is the first pinless moisture meter from Lignomat. You can choose between two different measuring depths (7mm + 20mm) in only one meter! CombiSCAN can be set in 4 different languages: English, French, German and Italian. T...

CONCRETE ENCOUNTER CONCRETE MOISTURE DETECTION METER

Non-destructive instrument for measuring moisture levels in concrete and sand-cement floors. Measurements or up to a few centimeters deep can be taken without damaging the surface. Ideal when laying parquet floors, floor coverings o...

Concrete moisture meter

The TQC Concrete moisture meter is a non-destructive moisture meter for concrete. By means of measuring the electrical impedance the moisture content of concrete can easily be determined by just pressing the instrument against the c...

ELECTRODE E10 FOR MOISTURE DETECTION METER

Hammer electrode made of tough plastic. Measures to a max. depth of 15 mm. To be used with Pocket 1, Pocket 3, Pocket 4 and Maxiligno.

ELECTRODE E12 FOR MOISTURE DETECTION METER

Ram electrode for taking core measurements. The needles are insulated at the shaft. To be used with Pocket 1, Pocket 3, Pocket 4 and Maxiligno.

ELECTRODE ES FOR MOISTURE DETECTION METER

Electrodes for measuring in construction materials. To be used with Pocket 3 and Pocket 4

KARSTEN TUBE PENETRATION TEST

The TQC Karsten Tube Penetration Test is a simple test for measuring the degree or water penetration into building materials such as concrete, stone and plaster. The test consists or a glass tube filled with water, bonded to the tes...

LIGNOMAT CALIBRATION BLOCK

Block with two-fixed resistively settings for testing Lignomat moisture detection meters. Can also be provided with a conversion certificate.

MAXILIGNO WOOD MOISTURE DETECTION METER

The maxiLIGNO is part of a new generation of moisture meters. It is equipped with newest technology for perfect precision and easy handling. maxiLIGNO has an extra big illuminated display that shows the chosen wood species and tempe...

MINI-LIGNO 'CLASSIC PLUS' WOOD MOISTURE METER

Wood moisture meter in pocket size format. The Mini LIGNO classic+ is the succession model of the mini LIGNO X. With the mini LIGNO classic+ you have the option between four wooden groups, 16 single species of wood and an reference ...

MINI-LIGNO CLASSIC WOOD MOISTURE METER

Wood moisture meter in pocket size format. The mini LIGNO classic is the succession model of ours mini LIGNO E. With mini LIGNO classic you have the option between four base-wooden groups. It is suited optimally for the use at home,...

MINI-LIGNO DUO WOOD MOISTURE METER

Pocket size moisture detection meter suitable for measuring in wood, and construction materials. The mini LIGNO duo is the succession model of the mini LIGNO S. With the mini LIGNO duo you have the option between four base-wooden gr...

MINI-LIGNO SMART WOOD MOISTURE METER

Wood moisture meter in pocket size format. With the mini LIGNO smart you own the option between four wooden groups, up to 16 freely eligible species of wood or building material kinds and an reference scale. The smart device is tune...

MOISTURE DETERMINATION BALANCE

The TQC Moisture Determination Balance is an analytical balance equipped with drying chamber and halogen lamps. The moisture content is determined automatically by calculating the loss of weight during drying. The balance is equippe...

MOISTURE ENCOUNTER PLUS

Electronic moisture detector for locating damp under rooring felt. Ideal for detecting leaks in roofs or dry walls. Also suitable for providing indication or moisture levels in wood and construction materials. Non-destructive meth...

PROFI LIGNO MOISTURE METER

The profi LIGNO is the new edition of the moisture meters maxi LIGNO and combi SCAN. It combines and extends their functions. Not only wood can be measured, but also different building materials, for example screed or gypsum. The pr...

SKIPPER PLUS MOISTURE DETECTOR

Non-destructive moisture detector for locating damp in laminated plastics such as polyester, and in wood. Equipped with sort rubber electrodes, which absolutely do not damage the surface. Three moisture ranges for detecting moisture...

WOOD MOISTURE TESTER WITH TEMPERATURE COMPENSATION

This instrument is a conductivity moisture meter specifically designed for the timber industry. The instrument has eight calibration scales, enabling the user to take accurate moisture measurements in 150 wood species. Moisture meas...