MC/RH Tracker


The MC/RH Tracker with BL2 is a unique data logger for moisture and relative humidity. System records simultaneously
– one relative humidity probe
– three moisture measuring points in wood, drywall, brick and other moisture-absorbing materials.

For wood drying, building surveillance, flooring installations and tracking moisture during storage and shipping.  A great diagnostic tool for material testing when moisture in materials is affected by relative humidity. A variety of probes, pins, screws can be used. Cables can be up to 50 ft long.


The accuracy and reliability for the data logger when monitoring moisture and relative humidity is the same as if the measurements were taken by the advanced Ligno-VersaTec moisture meter with multiple species corrections and a wide measuring range. For relative humidity the precision, fast responding RH BluePeg probe is used. System works as if 3 meters and 1 thermo-hygrometer monitor moisture and relative humidity for days, months and years.

Item Number: MC3-R


Product Description

Tracker MC/RH Package

Package contains everything needed for data logging moisture in wood, drywall, brick, other moisture-absorbing materials as well as, relative humidity, ambient temperature, DPT, GPP and EMC measurements. Detachable cables allow installation of moisture probes and RH probe in remote locations for in-wall and in-depth measurements.

The Tracker MC/RH package consists of:

Click here for details.

Data Logging and monitoring

Tracker and BL2 are the main components: The Tracker MC/RH module measures and monitors moisture and relative humidity and the Memo-Chip BL2 module saves the measurements. Also included is one relative humidity probe RH BluePeg and three sets of screws with cables for measuring moisture in wood and other materials. If screws are not usable for the application, we offer a wide variety of pins and wood probes with the necessary cables to connect to the Tracker (See Screws, Pins, Probes and Cables below)

  • Probes, pins, screws and RH BluePeg probe have to be installed and connected to the Tracker.
  • The Memo-Chip BL2 has to be set up for a test series (download BL2 application) and connected to the Tracker.
  • Recording starts, once the BL2 is connected to the Tracker

At pre-set time intervals, the BL2 initiates and saves measurements from all measuring stations connected to the Tracker. The BL2 can save up to 32,000 sets of RH and MC measurements with a date and time stamp. 
To download the measurements, the BL2 has to be disconnected from the Tracker and connected to a PC or tablet. The Tracker and all cables can be left in place while the BL2 is disconnected to review data on the PC. After reconnecting the BL2 to the Tracker, recording will proceed automatically adding measurements to the same log or a new log can be started. 

This 2-module system with BL2 and Tracker allows for installing probes, cables and the Tracker permanently while allowing the convenience of leaving the BL2 in an easy-to-retrieve location for intermittent data retrieval. Upon request, the RH cable between Tracker and BL2 can be custom cut longer than 6 feet to allow the Tracker to be placed in a location far away from the BL2. The RH cable, which is included in the package to connect Tracker and BL2, is a standard stereo cable 6ft with 3.5mm plugs.

Moisture Measurements

Tracker MC/RH can measure and monitor moisture in wood, drywall and other hygroscopic materials. Accuracy of measurements is comparable with the most advanced moisture meter from Lignomat, the Ligno-VersaTec.
Measuring range for wood moisture: 5-99.9% dependent upon species
Tracker has a built-in temperature probe for wood temperature corrections.

Final moisture values, which appear in graph and log on PC are corrected for:

  • wood temperature as measured by the Tracker
  • wood species as selected when the BL2 is set up for the test
  • drywall settings and reference scales as selected when the BL2 is set up for the test

Other materials can be measures with the MC Tracker also, even if there is no specific calibration available for the material to be measured. Using the relative scales programmed in the Tracker, it becomes very obvious when looking at the graph and the log, if and how fast the moisture has been changing.

Resolution: 0.1 for all values

Screws, Pins, Probes and Cables
3 sets of stainless steel screws and 3 LP-mini cables 3 ft long are included in the Tracker MC/RH Package.

Instead of stainless steel screws, pins and wood probes can be used
EG pins,
teflon-coated with 3/4″ depth
EL pins, teflon-coated with up to 7″ depth, adjustable to any length required between 1/2″ to 7″                                
LP-mini cables are used to connect pins EG and EL to the Tracker. LP-mini cables have loops on one end to connect pins and 2mm plugs on the other end to connect the Tracker. Loop nuts are required to hold the cable loops in place and assure a solid connection between cables and pins. 

PK wood probes, teflon-coated for 1/2″ to 2 3/4″ measuring depth. Recommended for wood thicker than 3/4″. PK-mini cables are used to connect PK probes to the Tracker. PK-mini cables have 4mm plugs on one end to connect PK wood probes and 2mm plugs on the other end to connect to the Tracker. 

All cables are made in-house at Lignomat, therefore we can supply shorter and longer cables upon request. Ask Customer Service at 1-800-227-2105 for a quote.

Humidity Measurements

The RH BluePeg probe with RH adapter and a RH cable is included to measure humidity and temperature. The RH BluePeg probe comes with a precision, reliable, fast-responding RH/T sensing element. Using the RH cable allows for in-wall, in-depth monitoring. Standard cable length is 6 ft, we custom make RH cables (stereo cables) for any length up to 75 ft. 

RH Probe: Diameter 0.5″, length 1.4″  (13mm x 36mm)
RH: ±2% (10-90%), ±3% below 10%, above 90%
T: ±0.5°F (32-120°F) , ±1°F (5-32°F and 120-160°F) Response time 8 sec.
Resolution for RH and T: 0.1% and 0.1°
Graph and logs also show Dew Point Temperature, Grains per Pound and EMC

RH BluePeg probe is also used for in-situ measurements of concrete moisture.

Note: Off-the-shelf thermo-hygrometers and data loggers usually come with an accuracy rating of  ±5% for relative humidity and  ±2°F for temperature.


Tracker MC/RH 

  • Size; 4″ x 2.5″ x 1″ (10cm x 6.4cm x 2.6cm)
  • Built-in species and temperature corrections
  • Built-in drywall scale and reference scale
  • No battery needed, measurements are initiated and saved by the BL2 Memo-Chip
  • Built-in connectors for:
    • Cables to measure moisture content (3) and relative humidity (1)
    • Cable to connect Tracker to BL2

Memo-Chip BL2

  • Interval 30 sec to 24 hrs
  • 32,000 data sets
  • LED indicators and audible alarms for out-of-range values
  • Lithium Battery, exchangeable, rated for 8 years
  • Size: 1″x1.25″x4″  (2.5cm x 3cm x 10cm)
  • Built-in connectors for:
    • Cable to connect BL2 to Tracker
    • Cable to connect RH probe to Tracker

For more information please contact Customer Service at 1-800-227-2105.

Lignomat USA Ltd, 14345 NE Morris Ct., Portland OR 97230, USA,

Package Includes

Tracker MC/RH

Tracker Module contains measuring circuitry for moisture in wood moisture, drywall and other solid material plus relative humidity and temperature of air.

Plug in for measuring and data-transmission cables

Memo-Chip BL2 Module

BL2 module comes with hardware to mount BL2 and RH probe, plus USB cable.

To record:

RH Thermo-Hygro probe

RH Thermo-Hygro Probe consists of one RH BluePeg Probe and the RH Adapter ready to be connected to the RH meter or data logger using the easy-connect 3.5mm stereo plug.

RH adapter can be replaced by RH-C cable (6 ft) for remote measurements

RH Cable

Cables (2) are used to connect
– RH BluePeg probe to BL2 Memo-Chip
– Tracker MC-RH to Memo-Chip BL2

Standard length 6 ft, upon request up to 75 ft. 

LP-mini Cable

3 LP-mini cables connect stainless steel screws to Tracker MC-RH. 

All cables are made with high-grade Teflon cable to assure accurate transmission of measured moisture values. Standard length 3 ft, upon request available up to 36 ft.

Stainless Steel Screws

Up to 3 sets of stainless steel screws can be connected with LP-mini cables to the Tracker MC-RH for monitoring moisture content.


Pins EG and EL