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Moisture Meter User Instructions
Product code:  FIR420

1. INTRODUCTION

Thank you for purchasing the Valiant Moisture 

Meter. This product is an accurate instrument 

which is designed to measure the water content of 

wood fuels, logs, pellets and even paper and card. 

Please read this manual carefully before using the 

Moisture Meter and retain the manual for future 

use. 

2. FEATURES

• Large easy to read LCD display
• Wood type selection feature.
• Resolution: 0.5%
• High accuracy & fast reaction
• Data hold function 
• Low battery indicator 
• Temperature compensation 
•  Auto power shut off after 10 minutes without 

any operation 

•  Power supply: One 9-volt PP3 alkaline or car-

bon zinc battery 

• Product size: 155×55×28mm 
• Product weight: 140g (including battery)
•  Operating conditions: 0°C-40°C (32°F-104°F)/ 

0-70% RH

3. PRODUCT KEY

1 Protective cover
2 Protective cover for probe
3 Battery cover 
4 Probe
5 LCD Display 
6 Tree type selection button
7 Power ON/OFF / Data Hold button

4. OPERATING INSTRUCTIONS

4.1  Remove the protective cover and the probe 

cover – take care the probes are sharp. 

4.2  Press “Power/H” button to turn on the unit. 

The LCD shows “0.0%” and the measuring 

start symbol “SCAN”

4.3  Press the “MODE” button to select tree type 

“1, 2, 3, 4” shown on the LCD. Each number 

stands for a tree type, see details in the table 

“Tree type list”. If the wood type is unknown, 

it is suggested to choose the default tree type 

3.

4.4  Insert the probes approx 5mm into the wood, 

the Relative Humidity % (moisture content) 

will be displayed on the LCD. To hold the 

reading on the screen, momentarily press the 

“power/H” button. (See diagram below).

4.5  Repeat for different logs to get an idea of the 

moisture content.

4.6  Freshly cut wood may be in excess of 30%, 

well seasoned or dry wood will be below 20%

4.7  When the measurement is complete, replace 

the protective covers and press the “Power/h” 

button for at least 2 seconds to turn off the 

unit. 

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