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MR55
Operating Manual
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Instruction Manual
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Data sheet
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Instruction Manual
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Table of contents
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FLIR MR55 Operating Manual

User Manual

FLIR Moisture Meter
with Bluetooth®
Model MR55
2
Table of Contents
1. Advisories ................................................................................................................... 3
1.1 Copyright ...................................................................................................................................... 3
1.2 Quality Assurance .......................................................................................................................... 3
1.3 Documentation ............................................................................................................................. 3
1.4 Disposal of Electronic Waste ........................................................................................................... 3
2. Introduction .............................................................................................................. 4
2.1 Key Features ................................................................................................................................. 4
3. Description ................................................................................................................ 5
3.1 Meter Description ......................................................................................................................... 5
3.2 Display Description ........................................................................................................................ 6
3.3 Button Description......................................................................................................................... 6
4. Operation .................................................................................................................. 7
4.1 Meter Power and APO.................................................................................................................... 7
4.2 Measuring Temperature and Relative Humidity ................................................................................ 7
4.3 Moisture Measurements ................................................................................................................ 7
4.4 Bluetooth® Transmission Basics ....................................................................................................... 8
4.5 Display Backlight ........................................................................................................................... 8
4.6 Worklight ..................................................................................................................................... 8
4.7 Data Hold ..................................................................................................................................... 8
4.8 Material Group Selection ................................................................................................................ 8
4.9 Temperature (oC, oF) and Relative Humidity Display Selection ............................................................ 8
4.10 Calibration Verification Test ................................................................ .......................................... 9
5. Bluetooth® Technical Details ..................................................................................... 9
6. Field Firmware Upgrades via USB Interface ............................................................. 10
6.1 System Firmware Upgrade ............................................................................................................ 10
6.2 Bluetooth® Firmware Upgrade ...................................................................................................... 11
7. Maintenance ........................................................................................................... 12
7.1 Cleaning ..................................................................................................................................... 12
7.2 Battery Installation and Replacement ............................................................................................ 12
7.3 Electrode Pin Replacement ........................................................................................................... 12
8. Safety ...................................................................................................................... 13
8.1 FCC Compliance ........................................................................................................................... 13
9. Specifications .......................................................................................................... 14
10. Material Group Reference ....................................................................................... 15
10.1 Common Names of Timbers (BS888/589:1973) with group nos. ...................................................... 15
10.2 Botanical names of timbers with MR55 group numbers .................................................................. 17
10.3 %WME Table (% Wood Moisture Equivalent) ................................................................................ 19
11. Technical Support ................................................................................................... 20
12. Three-Year Limited Warranty .................................................................................. 21
3

1. Advisories

1.1 Copyright

© 2018, FLIR Systems, Inc. All rights reserved worldwide. No parts of the software including
source code may be reproduced, transmitted, transcribed or translated into any language or computer language in any form or by any means, electronic, magnetic, optical, manual or otherwise, without the prior written permission of FLIR Systems. The documentation must not, in whole or part, be copied, photocopied, reproduced, translated or transmitted to any electronic medium or machine readable form without prior consent, in writing, from FLIR Systems. Names and marks appearing on the products herein are either registered trademarks or trademarks of FLIR Systems and/or its subsidiaries. All other trademarks, trade names or company names referenced herein are used for identification only and are the property of their respective owners.

1.2 Quality Assurance

The Quality Management System under which these products are developed and manufactured has been certified in accordance with the ISO 9001 standard. FLIR Systems is committed to a policy of continuous development; therefore, we reserve the right to make changes and improvements on any of the products without prior notice.

1.3 Documentation

To access the latest manuals and notifications, go to the ‘Downloads’ tab at:
http://support.flir.com. It only takes a few minutes to register online. In the download area you
will also find the latest releases of manuals for our other products, as well as manuals for our historical and obsolete products.

1.4 Disposal of Electronic Waste

As with most electronic products, this equipment must be disposed of in an environmentally friendly way, and in accordance with existing regulations for electronic waste. Please contact your FLIR Systems representative for more details.
4

2. Introduction

Thank you for selecting the FLIR MR55 Moisture Meter with Bluetooth® connectivity. This instrument detects moisture in wood and other building materials. The MR55 also measures Relative Humidity (RH) and ambient Temperature. This device is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.

2.1 Key Features

Resistance-based pin moisture measurements for wood and other building materials
including plywood, drywall, oriented strand board (OSB), brick, cement screed, concrete, cement mortar, anhydrite screed, lime mortar, and plaster
Ambient Temperature and Relative Humidity measurements Test material group selectivity Bluetooth® data transmission Firmware upgrades via micro USB port located in battery compartment Work light Backlit LCD Self-test calibration verification (test points in protective cap) Replaceable electrode pins Data Hold Battery powered (2 x 1.5V ‘AA’ cells) Automatic Power OFF after 20 minutes
5

3. Description

3.1 Meter Description

1. Temperature and Relative Humidity sensors
2. Measurement electrode pins
3. Display (backlit LCD)
4. Data Hold (short press) / Bluetooth® transmit (long press)
5. Worklight ON/OFF (short press) and backlight ON/OFF (long press)
6. Power button (long press ON/OFF)
7. Material Group number (short press) and
o
C, oF, RH% selection (long press)
8. Work light
9. Battery/USB port compartment lock
10. Battery/USB port compartment cover
Note: Protective cap not pictured
6

3.2 Display Description

1. Bluetooth® (BLE) icon (when paired)
2. Transmission icon (appears for 3 seconds
at the start of transmission)
3. Data Hold
4. Battery status
5. Material group number
6. Moisture measurement
7. Ambient temperature (
o
C, oF) and RH%
display area

3.3 Button Description

Long press to power the meter ON/OFF
Short press to freeze/unfreeze displayed readings. Readings must first be held before they can be transmitted via Bluetooth®
Long press to transmit held reading to remotely paired device
Short press to switch work light ON/OFF
Long press to switch display backlight ON/OFF
Short press to select a material group number (1~11)
Long press to step through ambient temperature (oC, oF) and relative humidity readings (shown on lower left display digits)
7

4. Operation

4.1 Meter Power and APO

1. Two (2) 1.5V ‘AA’ batteries (rear compartment) power the meter.
2. Long press the power button to switch the meter ON/OFF. When ON, the
meter display will appear as shown in the meter description section above. If the meter display does not switch ON, please check the batteries.
3. The meter’s APO feature automatically switches the meter OFF after 20 minutes
of inactivity.

4.2 Measuring Temperature and Relative Humidity

The ambient temperature and relative humidity sensors are located at the top of the meter (item 1 in the Meter Description section).
Moisture measurements are automatically temperature compensated. The meter calculates the compensation using the ambient temperature measurements.
1. The temperature or humidity reading appears on the bottom left of the LCD.
2. Long press the button to step through
o
F, oC, and Relative Humidity readings.
3. Remove the protective cap when taking ambient measurements.
4. Replace the cap when finished.

4.3 Moisture Measurements

1. Power the meter and select the appropriate material group using the button
(short presses). See the Material Group Reference sections for details.
2. The meter detects moisture through the electrode pins positioned at the top of
the meter. Carefully remove the protective cap and push the pins firmly into the material under test. For wood applications, insert the pins perpendicular to the wood’s fiber structure.
3. View the readings on the LCD. Take a number of readings in a variety of
locations for the best representation of the moisture present.
4. The measurement range for wood is 7 to 99%. The measurement range for
other building materials is 1 to 99% (Group 10) and 1 to 35% (Group 11). Readings are automatically temperature compensated.
5. Replace the protective cap after each use.
CAUTION: The electrode measurement pins are sharp; Use care when handling. Cover the pins with the protective cap when the instrument is not in use.
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