Extech Instruments MO270 User manual

User Guide
Wireless Pin and Pinless Moisture Meter
Model: MO270
Includes
EX3000 Wireless Receiver and
MO270-X Wireless Moisture Meter

FCC warning statement:
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
•Consult the dealer or an experienced radio/TV technician for help.
Caution: Any changes or modifications to this device not explicitly approved by
manufacturer could void your authority to operate this equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
RF warning statement:
The device has been evaluated to meet general RF exposure requirement. The device
can be used in portable exposure condition without restriction.

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Introduction
Congratulations on your purchase of the Extech MO270 Moisture Meter with full graphical display.
This meter includes MeterLinkTM Bluetooth capabilities for use with FLIR infrared cameras (such as
FLIR T/B200, T/B300, T/B360, T/B400 or i/b60 cameras). The MO270 detects moisture in wood
and other materials such as particle board, carpeting, and ceiling/bathroom tiles using a non-
invasive method (pinless); the MO270 also measures moisture in sheet rock and other building
materials using the pin method. This meter is shipped fully tested and calibrated and, with proper
use, will provide years of reliable service.
Features
Detachable sensors transmit data viewable on meter display from up to 65ft (20m)
Readings from up to eight (8) remote sensors can be viewed on meter
Meter can record data from up to forty (40) remote sensors simultaneously onto SD card
Wireless sensor affixes to 4 ft (1.2m) telescoping handle; Optional longer handles available
Wirelessly transmit moisture data to FLIR IR cameras via MeterLinkTM and Bluetooth
Wood Moisture equivalent (%WME) pin readings
Visual and audible High and Low Alarm modes
2-point calibration check built into protective cap
Includes 3.7V rechargeable Li-Polymer battery, wireless moisture sensor, external pin probe,
replacement pins, telescoping handle, AC adaptor, protective cap, 2G SD card, and hard case

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Description
Meter Front View
1. Electrode pins protective cap
2. Sensor release buttons
3. Display
4. Function buttons
5. Power button
6. Bluetooth status light (blue)
7. Navigation and OK buttons
Meter Side Views
1. Sensor release buttons
2. Video output
3. Audio output
4. RJ-45 remote probe port
5. Meter (receiver) USB port
6. Mini-SD card
7. Sensor (ransmitter) USB port
Meter Components
1. Contact pins
2. Non-Contact capacitive sensor
3. Sensor (transmitter)
4. Meter (Receiver)

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Display Icons
ICON
Name
Function
(black) Low alarm set Low alarm is set and active with sound
(black) High alarm set High alarm is set and active with sound
(black) Low alarm set Low alarm is set and active without sound
(black) High alarm set High alarm is set and active without sound
(red) Low alarm triggered Low alarm has been triggered
(red) High alarm triggered High alarm has been triggered
(B.T.) MeterLink mode Bluetooth is on, MeterLinkTM protocol is active
(gray) (B.T.) Transmitter ON Bluetooth is ON; PC protocol is active
(blue) (B.T.) Active pairing Bluetooth is ON; PC protocol is active
(gray) (RF) Wireless ON Wireless transmitter is ON; no communication
activity with sensor
(orange) (RF) wireless comm. Wireless transmitter is ON; communication with
sensors is active
(blue) REL mode Reading moisture using non intrusive sensors
WME mode Reading moisture using ‘pin’ sensors
External probe Reading measurement from external probe
(blue) Internal probe Reading measurements from internal probe
Recording Unit is actively recording content (on-screen)
(green)
Sensor (transmitter)
battery Sensor battery (fully charged)
(orange) Meter (Receiver) battery Meter battery (low)

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Setup
Getting Started
1. Charge the sensor and the meter batteries (refer to following section for full details on
battery charging).
2. To switch the meter ON, press and hold the button for 3 seconds; the navigation buttons
will illuminate and the display will switch ON. To power OFF, press and hold the power
button for 3 seconds.
3. The F1, F2 and F3 buttons are ‘soft keys’ meaning that their functions change with the
particular mode or screen that is active.
4. The ▲, ►, ▼and ◄buttons are used to navigate the menu selections.
5. The “OK” button is used to select the highlighted menu function.
Charging the Batteries
1. Charging will begin once the USB cable is connected between the mini-USB port on the
Sensor or the Meter and a PC USB port or an AC outlet. Connecting only the Meter USB
port charges both the Meter and the Sensor simultaneously (while they are physically
connected to each other).
2. Note that if you connect the meter to the PC via the USB port before switching the meter
ON, the meter screen will show these 3 selections when it is powered up:
PC CAM (reserved for future use)
Disk Drive (select this setting to view the meter’s stored readings on the PC using
optional WindowsTM software)
Charger (select this setting if the connection to the PC is to be used for charging
purposes)
3. To check the battery status:
a) Press and hold the button for 3 seconds to switch the meter ON.
b) The USB menu will appear. Navigate down to “Charger” and press OK.
c) The digital display measurement screen will appear showing the two battery icons at
the upper right side of the display.
d) The (Meter) and (Sensor) icons will be completely filled when the batteries are
fully charged.

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Operation
Basic Operation for Pin Measurments
CAUTION: The electrode measurement pins are extremely sharp. Use care when handling this
instrument. Cover the pins with the protective cap when the instrument is not in use.
1. Remove the protective cap to expose the electrode pins.
2. Press and hold the key for 3 seconds to switch the meter ON.
3. If the icon is displayed, proceed as follows to switch to the icon.
a) Press the MENU (F1) button and navigate to the WME/REL box.
b) Press OK, select WME, press OK and press EXIT.
4. Carefully push the electrode pins a minimum of 0.07” (2mm) into the material under test.
Note that the pins should be inserted into wood perpendicular to the wood’s fiber structure.
For high moisture readings, it may take several minutes for the meter reading to stabilize.
5. Take several readings in several locations on the material for the best representation of the
amount of moisture present.
6. Read the measurement values on the display
7. Replace the protective cap when finished.
Basic Operation for Pinless Measurments
1. Press and hold the key for 3 seconds to switch the meter ON.
2. If the icon is displayed, proceed as follows to switch to the icon.
a) Press the MENU (F1) button and navigate to the WME/REL box.
b) Press OK, select REL, press OK and press EXIT.
3. Press and hold the key for two seconds to switch the meter OFF
4. Keep hands and any surface away from the rear sensor and then press the key to
switch the meter ON. The meter will auto-zero during power-on.
5. The pinless moisture detector is located at the rear of the instrument, just behind the display.
6. Place the meter so that the rear sensor lays flat against the surface of the material under
test.
7. Take several readings in several locations on the material for the best representation of the
amount of moisture present.
8. Read the measurement values on the display.

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The SETTINGS Configuration Mode Basics
1. Turn the meter ON.
2. Press and Hold the OK button until the Main Menu appears
3. Press the F3 (settings) button to bring up the SETTINGS
menu
4. Navigate the menu and select sub-menus as desired. Details
for each setting are provided in the ‘SETTINGS Mode IN
DETAIL’ section of this guide below.
The SETTINGS Mode Menu Items in Detail
ALARM Settings
a) From the SETTINGS sub-menu, navigate to the ALARM box
and press OK.
b) Alarm limits can be set directly by a value entry or from a
measured (scanned) value.
c) Navigate to the value entry box or the scan box.
d) For value entry, scroll to the value entry box and press OK.
The digit-select red arrow will appear. Use the left/right arrows to move the red arrow. Use the
up/down arrow buttons to set the numerical value of the digit above the red arrow. Note that the
High Alarm cannot be set lower than 10.00% and the Low Alarm cannot be set higher than
10.00%.
e) When complete, press OK to capture the value and then press F3 button to store the value.
f) Re-enter the ALARMS screen for further adjustments.
g) For scanned entry, navigate to the SCAN box.
h) Take a measurement and then press the OK button to begin the scan. The measured values will
appear in the % box.
i) With the desired value in the box, press the OK button to capture the value and then press the
F3 EXIT button to store the value.
j) To turn the alarm ON or OFF: navigate back to the Alarm screen and use the arrow buttons to
move the cursor to the Alarm High and/or Alarm Low OFF box.
k) Press the OK button to toggle between ON (OFF) or OFF (OFF).
l) When complete, press the OK button to capture the settings and then press the F3 EXIT button
to store the setting.
m) To set the alarm beeper ON or OFF: Return to the Alarm screen and navigate to the SOUND
ON or OFF box. Select the desired condition, press OK and then press F3-EXIT.

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AUTO POWER OFF (APO) AND BACKLIGHT Settings
a) The APO or backlight timeout can be set in minutes.
b) Navigate to the APO/BL sub-menu in the SETTINGS mode.
c) Scroll to the desired setting.
d) Press OK and then press EXIT or BACK when done.
CHANNEL Setting
a) Up to 40 remote sensors can be identified on this screen. Up
to 8 sensors can be selected at any one time for viewing
remotely on the meter.
b) To set the channel, first navigate to the CHANNEL sub-menu
in the SETTINGS mode.
c) Navigate to the desired channel and then Press OK
d) Continue selecting channels (up to 8) and press EXIT or
BACK when done.
DATE/TIME and FORMAT Settings
a) To set the time and date, select DATE/TIME from the
SETTINGS menu and then scroll to the desired setting field
and press OK.
b) Use the left/right arrow keys to move the red triangular
pointer to digit that is to be changed
c) Use the up/down arrows to change a digit value.
d) Press OK to store the new value and to hide the red
triangular arrow.
e) To select a time format, scroll to the desired settings field and press OK.
f) Press EXIT or BACK when done.
DATA FORMAT Setting
a) To set the numerical delineator to a decimal point (.) or to a
comma (,) select DATA FORMAT from the SETTINGS
menu.
b) Scroll to the desired selection.
c) Press OK to select and then press EXIT or BACK when
done.
BLUETOOTH / PC Selection Setting
a) To activate the Bluetooth/MeterLinkTM function so as to
communicate with a FLIR camera, select BLUETOOTH from
the SETTINGS menu.
b) Scroll to METERLINK MODE and press OK
c) Select PC mode if the meter is to be connected directly to a
PC for two-way communication using optional software.

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d) Select OFF if no communications will be used.
e) Press BACK or EXIT when done.
ZERO CLEAR
a) To set the ZERO CLEAR function to MANUAL or AUTO,
select ZERO CLEAR from the SETTINGS menu.
b) Use the arrow keys to select MANUAL or AUTO.
c) Press OK to select and then press BACK or EXIT when done.
SYSTEM INFORMATION (INF)
a) To view the System Information, select SYSTEM INF from the
SETTINGS menu
b) The only parameters that can be changed on this screen are
OWNER NAME and NUMBER.
c) Scroll to the OWNER NAME or NUMBER field and then press
OK.
d) An alpha-numerical screen will appear allowing the user to
select text using the arrow and OK buttons.
e) Press BACK or EXIT when done.