Moisture Meters

A moisture meter or a damp meter is a portable instrument designed for measuring the moisture levels in a range of building materials including wood, concrete, brick, and plasterboard.


Why do we need moisture meters?


Early detection of moisture or water damage is essential. Meters help in the prevention of mould growth and structural damage, both are costly to repair and can be detrimental to health and safety.


There are two main categories of moisture meter, Pin type or Pin-less type. Both are handheld and have a screen on the front to display readings. Meters are available in a digital form with a backlit LCD display or alternatively an analogue version with a needle scale. As the meters work in slightly different ways, selecting the best one for the job at hand is dependent on the application and the environment.


Pin type


A pin-type moisture meter works by measuring the amount of electrical resistance between two points. Pin moisture meters have a pair of sharp metal pins at the top of the device. Once the metal pins are inserted into the material a small amount of electrical current is passed between the two spikes. As we all know water or moisture is a good conductor, so the higher the moisture content the lower the resistance value. The measurement is converted into a % of MC (moisture content) within the material.


Pinless type


A pinless moisture meter works by detecting how waveforms are affected by the presence of moisture in a material. The non-destructive meter works best on a flat surface. Clever internal circuitry produces a signal that is sent out through a sensing area on the back of the device. The signal is emitted in the form of electromagnetic waves. The moisture content can be converted into a scalable format to provide a moisture content reading.


Applications


  • Property and construction

Building inspectors use damp meters to help them identify potentially hidden hotspots behind plaster that can cause damage to structures and buildings from moisture build up.


  • Flooring Contractors

Being able to determine the best conditions for laying screed, concrete or wooden floors is crucial. Moisture content in materials and the relative humidity in the room must be carefully considered. Failure to do so can cause issues like distortion, cracking and buckling.


  • Furniture makers and woodworking

Wood naturally has a high moisture content, once dried by air or a kiln meters are used to detect moisture content ensuring the material is dry enough to work with.

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Part Details Brand Maximum Measurement Best Accuracy Display Type Scale Type Power Source Battery Type Battery Life Dimensions Weight Minimum Operating Temperature Height Length Maximum Operating Temperature Model Number p Width
RS PRO DT-229/239 Moisture Meter, Maximum Measurement 200 (IR Temperature) °C, 99.9 (Humidity) %, 99.9 (Moisture) % RS Pro 200 (IR Temperature) °C, 99.9 (Humidity) %, 99.9 (Moisture) % ±2 (Humidity) %, ±5 (IR Temperature) °C Digital Building Materials, Wood Battery - - 70 x 38 x 170mm 280g - 170mm 70mm - DT-229/239 38mm
FLIR MR55 Moisture Meter, Maximum Measurement 60 (Temperature) °C, 80 (Relative Humidity) %, 99 (Building Material) % Flir 60 (Temperature) °C, 80 (Relative Humidity) %, 99 (Building Material) % ±1 (Temperature) °C, ±2 (Building Material) %, ±2 (Relative Humidity) % Digital Building Materials, Wood Battery AA 70 h 58 x 33 x 188mm 160 (with battery)g 0°C 188mm 58mm +60°C MR55 33mm
FLIR MR59 Moisture Meter, Maximum Measurement 100% Flir 100% - Digital Building Materials, Wood Battery 9V Battery 40 h 67 x 38 x 240.5mm 245g 0°C 240.5mm 67mm +50°C MR59 38mm
FLIR MR77 Moisture Meter, Maximum Measurement +200 (IR Temperature) °C, +77 (Sensor Temperature) °C, 20 (Vapor Flir +200 (IR Temperature) °C, +77 (Sensor Temperature) °C, 20 (Vapor Pressure) kPa, 99 (Pin Mositure) %, 99 (Relative Humidity) %RH, 99.9 (Pinless Mositure) ±2 (Sensor Temperature) °C, ±2 (Vapor Pressure) %, ±2.5 (Relative Humidity) %RH, ±3.5 (IR Temperature) °C Digital Building Materials, Wood Battery 9V Battery 100 h 72 x 45 x 139mm 290g 0°C 139mm 72mm +50°C MR77 45mm
RS PRO RS-120 Moisture Meter, Maximum Measurement 0.2 → 2 %, 6 → 44 % RS Pro 0.2 → 2 %, 6 → 44 % ±0.2 %, ±2 % Digital Building Materials, Wood Battery LRAA x 4 - 40 x 20 x 96mm 83g 0°C 96mm 40mm +40°C RS-120 20mm
RS PRO RS-125 Moisture Meter, Maximum Measurement 0.2 → 2 (Building Material) %, 6 → 44 (Wood) % RS Pro 0.2 → 2 (Building Material) %, 6 → 44 (Wood) % ±0.05 (Materials) %, ±1 (Wood) % Analogue Building Materials, Wood Battery CR 2032 x 3 - 48 x 33 x 140mm 93g 0°C 140mm 48mm +60°C RS-125 33mm
RS PRO DT-128M Moisture Meter, Maximum Measurement 100% RS Pro 100% - Digital - Battery AAA - 63 x 30 x 242mm 226g - 242mm 63mm - DT-128M 30mm
FLIR MR40 Moisture Meter, Maximum Measurement 60% Flir 60% ±2 % Digital Building Materials, Wood Battery AAA 70 h 31 x 26 x 193mm 80g -10°C 193mm 31mm +60°C MR40 26mm
Chauvin Arnoux C.A 847 Moisture Meter, Maximum Measurement 100% Chauvin Arnoux 100% - - Plaster, Wood Battery 9V - 195 x 60.5 x 38mm 160g 0°C 38mm 195mm +50°C C.A 847 60.5mm
FLIR MR176 Moisture Meter, Maximum Measurement +50 (Air Temperature) °C, +50 (Dew Point) °C, 100 (Pinless Moisture), Flir +50 (Air Temperature) °C, +50 (Dew Point) °C, 100 (Pinless Moisture), 100 (Relative Humidity) %, 12 (Vapor Pressure) kPa, 30 (Pin Moisture) %, 80 (Mixing Ratio) g/kg ±0.05 (Vapor Pressure) kPa, ±0.25 (Mixing Ratio) g/kg, ±0.6 (Air Temperature) °C, ±1 (Dew Point) °C, ±1.5 (Pin Moisture) %, 2.5 (Relative Humidity) %RH Digital - Battery 3.7 V Li-Ion Rechargeable 18 h - - - - - - MR176 -
FLIR MR160 Moisture Meter, Maximum Measurement 100% Flir 100% ±5 % Digital - Battery Rechargeable Li-ion 18 h - - - - - - MR160 -
Instruments Direct 224-070 Moisture Meter, Maximum Measurement 28% Instruments Direct 28% - Analogue Concrete, Plaster, Wood Battery 9V 100 h 43 x 91 x 146mm 230g - 146mm 43mm - 224-070 91mm
Kern DAB 100-3 Moisture Analyser Kern - - - Moisture Analyser - - - - - +5°C - - +40°C DAB 100-3 -
Kern DBS 60-3 Moisture Analyser Kern - - - Moisture Analyser - - - - - +5°C - - +40°C DBS 60-3 -
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