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Home » Blog » BEST Firewood Moisture Meters for 2023/23 – Ideal for Firewood

BEST Firewood Moisture Meters for 2023/23 – Ideal for Firewood

Last Updated: February 9, 2023 / at: 10:57 pm

Product details + visit Amazon to learn more
An affordable, easy=to-use, wood moisture meter. (Amazon)

he chill of winter inevitably sets in, and we’re forced to face another season of burning firewood to stay warm. Whether you’re getting warm and cozy indoors, lighting up a wood-burning stove, or want to start up the fire pit outside for entertaining, your wood needs to be just right for burning.

Choosing the right firewood moisture meter can take the guesswork out of trying to determine if your firewood is seasoned or not.

Table of Contents...

  • 1 Editors’ Picks — Best Firewood Moisture Meters
    • 1.1 Pro-Grade Wood Moisture Meter
    • 1.2 Best Value Moisture Meter:
      • 1.2.1 ➤Bosch Universal-Humid (‎0603688000)
    • 1.3 Best Wood Meter for the Money:
      • 1.3.1 Calculated Industries 7445 AccuMASTER
    • 1.4 What is Seasoned Firewood?
  • 2 Moisture Levels : Types of Firewood
      • 2.0.1 Do I Need a Firewood Moisture Meter?
  • 3 Did you know?
    • 3.1 What Does a Firewood Moisture Meter Do?
      • 3.1.1 Pin vs. Pinless Firewood Moisture Meters
      • 3.1.2 General Tools MMH800 | Wood Moisture Meter
      • 3.1.3 FLIR MR55 : Adjusts for Ambient temperature
    • 3.2 Look for Quality
  • 4 Best Firewood Moisture Meters
    • 4.1 Lignomat Mini-Ligno E/D
    • 4.2 Lignomat Mini-Ligno S/D
    • 4.3 Dr. Meter MD-812
    • 4.4 STIHL Wood Digital Moisture Meter
    • 4.5 General Tools & Instruments | Moisture Meters
    • 4.6 General Tools : MMD4E
      • 4.6.1 MMD5NP | Firewood Moisture Meter

Editors’ Picks — Best Firewood Moisture Meters

It’s important to know the moisture level before buying or burning your firewood. Here are two inexpensive models to get started. General Tools is a top brand with a rich history dating back to 1922. Dr. Meter is a brand created to sell you cheap products, which consumers tend to love.

General Tools MMD4E – ±2% / 0.1%
Pin Model : Best value for the money.
Buy on Amazon

I personally recommend the MMD4E from General Tools, or any wood moisture meters from this brand. This is relatively inexpensive yet they still possess character and quality which you don’t get with cheap modern brands like Dr. Meter.

Consumers often look for cheap products that work as expected, especially now as we are heading towards a recession. Sometimes all you need the most inexpensive meter that will get the job done. These are are $50 — not the cheapest.

  • Complete Measuring Capabilities: Humidity sensor, Water leak detector, Moisture reader (mildew scanner), Mold tester
  • 8 Types of Wood
  • Ranges: Wood=5 to 50% WME (Wood Moisture Equivalent) / Building Materials=1.5 to 33%
  • Moisture accuracy/resolution: ±2%/0.1%
  • Wood moisture scales : 5 to 11.9% (low) / 12 to 15.9% (medium) / 16 to 50% (high)
  • Building materials scales: 1.5 to 16.9% (low) / 17 to 19.9% (medium) / 20 to 33% (high)
  • Display size / type: 99.9 count backlit LCD with 0.3 in. (8mm) high digits
  • Auto power off: After 3 min.
  • Power source: “9V” battery (included)  
Dr. Meter MD918 – 1% / +0.5
Pinless : Good choice. Includes case.
Buy on Amazon

The MD918 is nice range of options for wood, which includes the option to choose from 10 different types of wood, giving you greater accuracy. It’s a pinless model and therefore more expensive than a pin model. It’s simply more convenient and you’ll never have to worry about marking up any material you need to test. It also factors in temperature when calculating it’s final score.

At around half the price, consider the 2-in-1 pin moisture meter from the same brand. It’s cheap and it does what you expect with no frills.

  • 10 unique grades of timber density, with 4%~80% Maximum Error
  • Max. error: 1%Rh+0.5
  • Resolution: 0.5%
  • Pinless model : Electromagnetic
  • Environment temperature -10 ~ 60ºC
  • Humidity: 0 ~70%RH
  • Power supply: 3 x 1.5V AAA battery
  • Weight: 95g (not including batteries)
  • Size: 132 x 67 x 26 mm
  • Includes carry case and batteries
  • Auto power off: After 5 min.
  • Automatic temperature compensation


Pro-Grade Wood Moisture Meter

Engineered to last a lifetime.
Buy on AMAZON

  • Size : Length: 5.75″ / Width: 3″ / Thickness: 1″
  • Scanning Area : 2.0 inches (50mm) x 2.5 inches (63mm)
  • Power : 9-volt battery
  • Auto Power Shut-Down : 60 seconds
  • Measurement Ranges :
    Ambient Temperature: 32˚F to +110˚F (0˚C to +43˚C)
    Ambient Relative Humidity: 0% to 100%
    Equilibrium Moisture Content Measurement Range: 0-40.7%
  • Dew Point: -85˚F to +110˚F (-65˚C to +43˚C)
  • Absolute Humidity: 0 to 431.1 lb/ft (0 to 61.6 kg/m)
  • Specific Gravity Range for Wood Species : 0.20-1.0 SG
  • Storage Temperature and Humidity : +50˚F to +90˚F (+10˚C to +32˚C), Maximum relative humidity of 95%, Non-condensing
  • Operating Temperature Range : +32˚F to +110˚F (+0˚C to +43˚C)

Best Value Moisture Meter:

➤Bosch Universal-Humid (‎0603688000)

Product details + visit Amazon to learn more
Readings are saved. Test 3 different areas of wood for accuracy.
Amazon / Learn More

Features:

  • Designed for fast and easy measurement of the moisture content of wood
  • Two pins at the front of the tool are inserted into the wood to get a reading
  • Select between wood group A or B depending on the species
  • Includes wood group sticker to assist with identifying the correct wood group
  • Traffic light LED indicates the general status of the test results
  • Green light means the wood has a moisture content of less than 12% and can be considered dry
  • Yellow light means the wood has a moisture content of 12 -20% and may require attention
  • Red light means the wood has a moisture content of more than 20% and can be considered damp
  • Measurement value is displayed on screen as a percentage
  • Last two values are also saved for comparison
  • Powered by standard AAA batteries
  • Remaining battery charge indicator on display
  • Supplied with batteries and wrist strap

OVERVIEW

For under $50 the Bosch Universal Humid is my top recommendation for the best firewood moisture meter. It’s comfortable to hold with a sleek streamlined design. It’s accurate within 1% and it’s very well built, and it should hold up from repeated ‘normal’ use. You’ll appreciate the fact that you can read the display in the dark, which is always nice. I expect all of my digital devices to be readable in the dark.

Another great feature is you have the option to choose from the two available wood groups to increase the accuracy of your reading. The options are:

  • Group 1 : Maple, birch, larch, Douglas fir,, cherry tree, spruce
  • Group 2: Ash, pine, oak, walnut, beech

If you’re unsure of the type of wood you have and you don’t know which group to select, Bosch recommends choosing Group A because it indicates a higher value. This will also ensure that you never process your wood too early, or when it’s still moist. Reading are also saved as you take a reading. For accurate numbers you want to make sure you test 3 different areas on the wood, but never the ends as they dry earlier than the rest of the wood.

The manual if filled with tips for you. Bosch has done an excellent job at designing a moisture meter with just the right amount of complexity, without overwhelming customers, and selling it at reasonable price. I know you can buy a moisture meter for under $20, and we have some cheaper recommendations as well as professional-grade models. There’s an option for you no matter what your budget it.

Personally, I would always recommend buying the product that will give you all of the features you need over the long term. in other words, there’s no point in spending money on something that lacks a feature that you know you’ll need in the future. Generally, wood moisture meters offer similar features but there’s a variety of technology available to calculate moisture content, and the more expensive the model, the more accurate it generally will be.

VIDEO | A Closer Look at the Bosch Universal Humid
YouTube video

Best Wood Meter for the Money:

Calculated Industries 7445 AccuMASTER

Good value moisture meter for firewood and more. (Amazon)

Calculated Industries is an interesting company because they’re a brand that has been around since 1978 but I only heard of them about 6 months ago. Their name reveals what they’re about, which is primarily products that calculate and measure, such as: specialized calculators and measuring tools such as moisture meters and digital caliper’s. It’s an interesting business, which is quite niche but necessary.

This is an impressive moisture meter due to it’s impressive array of features and the overall design. It’s considered a construction moisture meter, and therefore it can detect moisture in a variety of places and materials such as concrete. It’s an excellent buy, with consistent accuracy and an easy to use design. It was made for people, which is what I like to see.

The ergonomics are noticeable as it feels good in your hand. As you can see in the photo, it’s designed to fit comfortably in your hand when you’re using it. It’s very tactile, with large buttons and bold display text. Here’s a breakdown of the features you get:

  • ESTIMATE MOISTURE CONTENT QUICKLY AND EASILY – detector offers ideal dual functions of pin and pinless sensors in one. Use the pinless pad as a quick “ranging” feature to scan a large area for suspect areas without leaving holes. Then, switch to pins to quantify moisture level at various depths
  • PERFECT FOR HOME INSPECTIONS – Use the pad for quick non-invasive pinless scanning to find locations with higher than average moisture behind a wall or under a floor. CAUTION: Powerful pinless pad sensor measures to ¾” but can be influenced by materials up to 2 inches below subject material (e.g., metal screws, nails, workbench supports, etc.) Keep fingers clear of pad scanning area. Use pad to detect variations from normal and use pins to quantify it.
  • CHECK LUMBER AND HARDWOOD BEFORE BUILDING AND WOODWORKING – Use the pins to know the moisture content of your wood to make sure you’re not using damp, moist wood on your projects to avoid cracks, splits, warping. Ensure wood flooring has acclimated before installing
  • EASY TO USE – Large easy-to-read backlit display. Sturdy, hand-friendly tester body feels solid when pressing replaceable pins into materials. Hold key freezes reading. Test lumber or porous building materials – drywall, carpet, brick, concrete and plaster

For a little less money, consider buying the 7440 AccuMASTER XT, which is just as good in most ways, except it does not have a test pad if you want to get some rough numbers without putting holes in wood material that you don’t want to poke with pins. If you’re going to be using this meter primarily for firewood then you can get away with a much simpler design, such as the 7440.



What is Seasoned Firewood?

If you’re a novice to wood-burning, seasoned firewood refers to dry wood that has a moisture content of less than 20%. Wood can appear dry from the surface of it but may actually still be wet on the inside. There are a few different ways that you can check to ensure your wood is dry enough for burning. For instance, you can try the old sound check method of banging two pieces of firewood together. If they make a high-pitch sound then you’re good, but if they make a thud sound then they’re still wet inside.

Moisture Levels : Types of Firewood

Reference : Freshly cut wood has moisture levels between 45% to 65%. It can take 1 to 2 years to “air-dry” wood with a moisture content below 20%, which is considered “seasoned.” Hardwoods, like oak, take longer than softwoods. Every tree species is different, so it varies, and directly correlates to drying conditions and procedures.

Seasoned = 15% to 20% Moisture

On average, expect at least 8 months to achieve “seasoned” moisture content below 20%. Optimal moisture level is 15%. Hardwoods take at least 12 months, up to 2 two years for oak.

Green Firewood

Freshly cut wood has a Moisture Content of around 52%, on average. Can be as high as 120%, which translates to the water weighing more than the wood content.


🔥 The Drier the wood the more heat it produces. Moisture in wood requires energy for evaporation therefore reducing the overall heat potential of the firewood.


Semi-Seasoned Firewood

Set to dry for a minimum of 6 months. Less efficient to burn; reduced heat and produces more creosote. Not ideal wood for burning.

Kiln-Dried Firewood

Example of time to kiln dry :

Split oak firewood in (14″ to l8″ L) can be kiln-dried from 52% – 20% (moisture) in : 260 / 90 / 30 hours, at 140 / 180 / 220 °F (respectively) — 📄 read process


📒 Learn more about firewood by reading : How Much is A Cord of Wood and More Firewood Facts


Do I Need a Firewood Moisture Meter?

Yes, a firewood moisture meter allows you to select properly seasoned wood, allowing you extract the optimal amount of heat. Not to mention, it prevent you from burning wet wood — which is something you do not want.

You may be wondering if it’s really necessary to own a firewood moisture meter, especially if you’ve never used one before to burn wood. The truth is, you may not be getting the full effect of your firewood if it has a high moisture content. Why does the moisture content of firewood matter? There are a number of reasons and burning firewood that isn’t well-seasoned could end up costing you more money. When wood has a high moisture content it’s harder to get started and often times goes out more easily. Once you do get it started, it won’t put off as much heat as you’re expecting from a cozy fire which in turn results in going through even more wood.

Another reason you should only burn dry wood is because it can actually be hazardous to burn wet wood in an indoor fireplace. Wet wood, or often referred to as ‘green wood’, can lead to build up in your chimney which can cause a fire. It can also lead to costly maintenance for chimney cleaning services.



💬 If the ambient temperature where you are taking your moisture reading is above or below 70˚F you need to compensate for the readings from your wood moisture meter : Read this document to learn how. Although some models, like the FLIR MR55 automatically compensates for the ambient temperature. Easy!


Did you know?

Moisture distribution varies throughout a living tree. For example, root wood has more moisture than branch wood, branch wood retains more moisture than stem wood and lower stem wood has more moisture than the upper stem.


Moisture levels up to a ½” deep : Ryobi E49MM01

Best firewood Moisture Meter
Pinless : Fast and Easy to use. Great Buy! (Buy from Amazon)

What Does a Firewood Moisture Meter Do?

formula-wood-moisture-content-firewood
Don’t worry, the moisture meter does the calculations for you.

To get a more precise measurement of the moisture content your firewood has, a firewood moisture meter is a fairly inexpensive device that can detect the percentage of moisture that wood has. These are pretty simple to use and fairly accurate when used correctly. They can actually be used for multiple purposes besides just wood. There are two different types of meters that each use their own technology for detecting the moisture content of wood: pin meters and pinless meters. Things just got a little bit more interesting!

Pin vs. Pinless Firewood Moisture Meters

2 great wood meters: Dr Meter MD-812 and General T&I MMD7NP

When you’re shopping for an accurate firewood moisture meter there are many claims as to accuracy by big brands and this often boils down to the type of meter. The truth is accuracy will be determined by different factors and the purpose the meter is being used for. The quality and type of wood that is being tested play an important component in accuracy as well as the external temperature of the climate among many other factors. Let’s take a look at these two different types of meters and discuss the differences.

A pin-style meter has two prongs which are inserted into the wood to test for moisture content. These types of meters use electrical resistance to determine moisture content as an electrical current is passed between the two pins. Now to refresh your memory from science class, moisture is an excellent electrical conductor while wood is not; therefore, wood that is wetter will give less resistance against the electrical current. This type of meter measures a smaller portion of the wood within the area between the two prongs so you should test multiple areas for larger firewood pieces.

Electromagnetic-Wave-wood-moisture-content-firewood
Electromagnetic waves travel through the wood to give you a reading.

With a pinless meter, it uses radio waves to scan materials instead, reading the fluctuations in the electromagnetic wave to determine if moisture is present. Electromagnetic technology does not require penetrating the wood making it quicker and easier to use. The meter ‘scans’ the wood, so to speak, by creating an electromagnetic field from electrical waves that are produced by a sensor pad and sends a signal back to the meter determining the moisture content. These may also be referred to as ‘non-damaging’ meters because they don’t put holes in the wood to determine moisture – although if you’re primarily using it for firewood this isn’t really a major feature because it’s just going to be burned anyway.

If you’re trying to determine which of these two is more accurate, you have to weigh in a number of factors. Each type has its own pros and cons but they’ll each perform adequately under the right circumstances. For instance, a pinless meter may be much faster to use for measuring moisture content of a large stack of firewood than having to stick the probes of a pin-style meter into each piece. On the other hand, wood pieces that are inconsistent in size and density can cause variances in moisture content – a factor that is not impacted with the use of a pin-style meter.

The General Tools MMH800 (see below) gives you the flexibility to use it as a pinless or a pin-style wood moisture meter, which is the best of both worlds. For a little more money it offers more convenience, making it easier to get an accurate reading.


General Tools MMH800 | Wood Moisture Meter

4-In-1 — Pin or Pinless, Temperature and Humidity

A step above the average moisture meter. Easy to use.
Amazon / Learn More

Another considerable factor is the proper usage of the meter. A pinless firewood moisture meter has a sensor pad that must be in good contact with the wood’s surface in order to get an accurate reading. This means the entire area of the sensor pad should be touching the surface so if the wood you’re checking has really rough bark or is warped there may be air pockets in between the sensor pad and the surface that will give you an inaccurate reading.

The wettest part of the wood lies in the center so if you’re using a pin-style meter, you may need to split the wood first in order to check its moisture content for an accurate reading. Some pin meters may come with additional external prongs that are longer to penetrate denser pieces of wood like the Lignomat Moisture Meter Mini-Ligno E/D.


FLIR MR55 : Adjusts for Ambient temperature

Accurate with Bluetooth. Pro-grade moisture meter.

With replaceable electrode pins.
Amazon / Learn More
  • Ambient temperature range : 0°C to 50°C (32°F to 122°F) / Accuracy: ±1°C (2°F)
  • Drop test : 2 m (6.6 ft)
  • IP Rating : IP40
  • Relative Humidity : Range 0-10% / Accuracy ±4%; Range 10-85% / Accuracy ±2%
  • Wood Range: 7% to 29% (±2% MC accuracy); 30% to 99% (Reference Only) /
  • Building Material Range: 1% to 99% Group 10, 1 to 35% Group 11 (Reference Only)
  • Pin Moisture Groups : Wood Type: Groups 1–9; Building Materials: Groups 10 and 11
  • Work light : White LED
  • Display : Backlit, multi-function LCD
  • Battery Life : Typical 70 hours without worklight
  • Dimensions : 188 × 58 × 33 mm (7.4 × 2.3 × 1.3 in)

Look for Quality

Naturally, you want to ensure the product you are buying is a well-made quality product, because unless you’re a millionaire no one likes to throw their money away. All manufacturers will tell you their product is the best, but just because it has a high price tag and a sales claim doesn’t guarantee quality performance. A key to finding the best firewood moisture meter on the market is to look to reviews.

There’s power in numbers and high consumer ratings can speak volumes. The Dr. Meter MD-812 Digital Wood Moisture Meter, for instance, holds a very reasonable value and also happens to be a number one top seller for quality performance and accuracy.

One limitation to pin-style meters is the risk of the pins becoming stuck in the wood and breaking off of the unit. You don’t need to spend hundreds of dollars on a professional-grade meter, but you should do a little research beforehand to take this into account. Several models such as the one I just mentioned actually include spare pins to use with it for this very reason. Also be sure to look for a warranty.

There is no one-size fits all with moisture meters. The best way to determine what would be the best firewood moisture meter for your needs is to keep in mind the purpose you’re going to be using it for. Also keep in mind the type of wood that you will most likely be using it on to decide which type would be most suitable to get the most for your money.



Best Firewood Moisture Meters

Some excellent Firewood Moisture Meters to consider:


Lignomat Mini-Ligno E/D

Lignomat-Moisture-Meter---Mini-Ligno-E-D-wood-moisture-meter-firewood
Accurate readings and professional quality. Excellent product.
Amazon / Learn More

Documents (PDF) for the Lignomat Mini-Ligno E/D:

  • View or download the INSTRUCTIONS.
  • View or download the PRODUCT DETAILS.
  • View or download the WOOD GROUPS.

The Lignomat Mini-Ligno E/D wood moisture meter is well-constructed, easy to use and tough. It gives accurate and reliable measurements thanks to Lignomat’s advanced measuring technology. The LED display is durable and virtually unbreakable. Another advantage of this firewood moisture meter is it has a bright LED display that you can read even in dimly lit areas. Let’s face it, you might be checking your firewood in the early morning or late at night. If it’s an LCD display you probably won’t be able to read in poor lighting conditions.

The wide measuring range of the mini-Ligno E/D wood moisture meter is ideal for a variety of applications, including: woodworking, cabinet-making, flooring, measuring construction lumber, pallets, drying wood or testing firewood.

✓ It also has corrections for 2 wood groupings: Softwood and hardwood and panel products are built-in.

Features:

  • Bright LED display.
  • Ergonomic, durable, rugged design for easy operation.
  •  A unique shape that fits comfortably in your hand when measuring.
  •  A measuring range low enough to check hardwood floors (6%)
  •  A measuring range high enough to evaluate wet lumber (45%)
  •  A bright, digital display readable even in dark crawl spaces resolution of 0.1% below the critical moisture range of 10%
  • 2 settings for wood species corrections.
Lignomat-Moisture-Meter---Mini-Ligno-S-D-vs-E-D-wood-moisture-meter-firewood

The Mini-Ligno E/D is ergonomic and fits in your hand when measuring.  Compact enough to carry with you in your shirt-pocket. The green cap protects the pins during transportation and acts as a handle when pushing the pins into the wood. The design allows pushing behind the entire meter to insert the tapered pins easily.

Longer pins are stored inside the meter for measuring thicker material. The short pins are ideal for surface or end cut readings and for veneer. When measuring, push the pins into wood. The unique on-off switch between the pins, turns the meter on automatically and the bright LED instantly indicates moisture percentage.


Lignomat Mini-Ligno S/D

Lignomat-Moisture-Meter---Mini-Ligno-S-D-wood-moisture-meter-firewood
A great moisture meter for detecting mold problems in your home.
Amazon / Learn MOre

Ideal Materials for Testing: wood and soft building materials such as sheetrock, plaster and gypsum.

Applications: Construction, water damage, repair, inspection, maintenance.

If you need a wood moisture meter for your home then I recommend the Lignomat Mini-Ligno S/D instead of the Mini-Ligno E/D . It’s specifically geared towards home inspectors, architects, contractor, painters and homeowners. It’s better suited if you’re in the restoration and remediation industry. This moisture meter is for detecting mold problems in your home.


Dr. Meter MD-812

Discontinued: Replaced by the MT1905 — an improved 2-in-1 model from Dr. Meter

Cheap Firewood Moisture Meter

Dr.Meter-MD-812-wood-moisture-meter-firewood
Fantastic moisture meter. Inexpensive and compact.

The Dr. Meter MD-812 is a very popular wood moisture meter because it’s a well-made product that works reliably. Not to mention the fact that it includes a nice carrying case, an extra set of pins and a battery. It’s very affordable and for the average homeowner this is a very good choice.

Features:

  • Measuring Range: 5%-40%, Accuracy: +/-1%
  • Ability to store data and measured values in memory.
  • Low power indicator.
  • Ability to select 2-pin or 4-pin sensor.
  • Modular sensor pins.

Specs:

  • Manufactory/Brand: Dr.Meter
  • Testing Range 5% – 40%
  • Digital large size LCD display
  • Test Range: 5%-40%
  • Accuracy: +/-1%
  • Data held in memory for easy reading
  • Powered by one 9V battery, and has a low-power indicator
  • 2-pin or 4-pin sensor
  • Ability to change the sensor pins based on application
  • Dimension: 130Lx64Wx32H(mm)
  • Small size, easy to operate and carry

Includes:

  • Dr. Meter Moisture Meter
  • Carry Bag
  • Operating Manual
  • 9V Battery
  • (2x) Spare Sensor Pins (Total 4 Sensor Pins Included)

STIHL Wood Digital Moisture Meter

stihl-wood-moisture-meter-firewood
Excellent firewood moisture meter. Made by STIHL.
Amazon / Learn More

STIHL know firewood so you can bet their firewood moisture meter is accurate and reliable. It has an LCD Display and includes batteries. Made in Germany.

Specs:

  • Moisture range for:
    • Wood : 6%-42%
    • Other material : 0,2%-2%
    • Temperature : 0-40°C
  • LCD Display
  • Level battery indicator
  • 1,5V LR44 battery or equivalent X4
  • Weight : 50g

how-much-is-a-cord-of-wood-banner-article

General Tools & Instruments | Moisture Meters

General Tools & Instruments has been around for a very long time. The company began as the brainchild of Abe and Lillian Rosenberg in New York City, 1922.  Originally they were called General Hardware Manufacturing Co., the company specialized in the wholesale of “hard goods,” offering a full-range of domestic and professional items from clothesline pulleys and screen-door hardware, to specialty hand tools.

Today, they are also a leading manufacturer of wood moisture meters. You can learn more about the company on their website.


General Tools : MMD4E

Recommended firewood moisture meter

General-Tools-&-Instruments-MMD4E--wood-moisture-meter-firewood-2
Make sure your read the manual and learn how to use it correctly.
Amazon / Learn More

Whether you’re a professional contractor or a conscientious home owner, General’s ultra-sensitive moisture meters help you to easily detect hidden leaks in wood, concrete, plaster and carpet. Available as both analog and digital models, the meters provide accurate moisture level readings and are great for new home inspections, locating roof leaks or even selecting dry lumber at the yard.

Includes: Battery and manual.

Materials: Wood/timber and building material IE; brick, concrete, drywall, plaster, etc

Note: If the meter has not been turned on for a while, you have to hold down the on/off button for 4-5 seconds to turn the unit on.

View or download the MANUAL for the MMD4E firewood moisture meter.

Features:

  • 99.9 count LCD w/0.4 in. high digits.
  • Wood/building materials selection switch.
  • Low, Medium, and High moisture sounds and on-screen icons.
  • High accuracy and resolution.
  • Data hold + auto power off + low battery indicator.
  • Replaceable stainless steel pins (#PIND4E).
  • Powered by “9V” battery (included).
General-Tools-&-Instruments-MMD4E--wood-moisture-meter-firewood-diagram

Specifications:

  • Overall Moisture Measurement Range:
    • 5 to 50% for wood
    • 1.5 to 33% for building materials
  • Wood Moisture Scales:
    • 5 to 11.9% (low)
    • 12 to 15.9% (medium)
    • 16 to 50% (high)
  • Building Materials Scales:
    • 1.5 to 16.9% (low)
    • 17 to 19.9% (medium)
    • 20 to 33% (high)
  • Measurement Accuracy: ±3% of reading
  • Measurement Resolution: ±0.1%
  • Low Battery Level: < 7.5V
  • Auto Power Off Trigger: 3 minutes of inactivity
  • Current Consumption: < 15mA
  • Power Source: 1 “9V” battery (included)

MMD5NP | Firewood Moisture Meter

This product is No longer recommended. For reference only.

General-Tools-&-Instruments-MMD5NP-wood-moisture-meter-firewood-2
Pinless moisture meter with wood and concrete mode.

The wide-range MMD5NP enables moisture measurement of a variety of materials without having to pierce the material’s surface. The unit has a range of 0.0 to 99.9% REL (relative) for wood, and 0.0 to 56.5% REL (relative) for building materials. The sensor has a measurement depth of 3/4in (20mm). It sports a jumbo LCD display with intuitive on-screen icons for low/medium/ high moisture content and wood/concrete mode.

View or download the MANUAL for the General Tools & Instruments MMD5NP.

Features:

  • Non-invasive measurement technique
  • Jumbo display
  • Wide measurement range
  • Intuitive on-screen icons: Low/Medium/High moisture content; wood/concrete mode
  • Hold function
  • Audible peak reading alert
  • Auto-calibrating
  • Auto Power Off
  • Low and very low battery warnings

Specifications:

  • Measurement Ranges:
    • 0 to 99.9% REL WME (Wood Moisture Equivalent) for wood
    • 0 to 56.5% REL for building materials
  • Measurement Accuracy/Resolution: ±3%/0.1%
  • Measuring Depth: 3/4 in. (20mm)
  • Display Type/Size: 99.9 count LCD with 0.4 in.(10mm) high digits
  • Auto Power Off Trigger: 3 to 4 minutes with 0% reading
  • Low/Very Low Battery Warning Triggers: <7.5V/<6.5V
  • Operating Temperature: 32° to 122°F (0° to 50°C)
  • Operating Relative Humidity: < 80%
  • Power Source: 1 9V battery (included)

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Last Updated: February 9, 2023 at 10:57 PM / by Chainsaw Journal

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