FLIR EM54 User manual

USER MANUAL
Environmental Meter
Model EM54

FLIR EM54 USER MANUAL Document Identifier: EM54-en-US_AA
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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
3. METER DESCRIPTION 5
3.1 Front and Side Descriptions 5
3.2 Control Button Descriptions 6
3.3 LCD Description 7
4. OPERATION 9
4.1 Powering the Meter 9
4.2 Air Temperature and Relative Humidity Measurements 9
4.3 Wet Bulb and Dew Point Temperature Calculations 9
4.4 Type-K Thermocouple Measurements 9
4.5 Air Velocity Measurements 10
4.6 Airflow (Volume) Measurements 10
4.7 LCD Backlight 11
4.8 Data Hold 11
4.9 MAX-MIN-AVG Record Mode 11
4.10 Setup Mode 11
5. MAINTENANCE 12
5.1 Cleaning and Storage 12
5.2 Battery Replacement 12
5.3 Disposal of Electronic Waste 12
6. SPECIFICATIONS 13
6.1 General specifications 13
6.2 Measurement specifications 13
7. CUSTOMER SUPPORT 14
8. THREE-YEAR LIMITED WARRANTY 14

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1. Advisories
1.1 Copyright
© 2019, 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 Download tab at:
https://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.

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2. Introduction
Thank you for selecting the FLIR EM54 Environmental Meter. The EM54 measures Air
Temperature, Type-K Temperature, Relative Humidity, and Air Velocity and calculates
Dew Point/Wet Bulb Temperature and Airflow (volume). Visit
www.flir.com/testwarranty to read the 3-Year Limited Warranty document and to
register your product to receive a free 1-year warranty extension.
Features
•Dual reading, backlit multi-function display
•Measures air temperature and relative humidity via built-in temperature and
relative humidity sensors
•Measures air velocity and Type-K temperature using remote probes
•Side compartment with micro USB port for vane anemometer connection and sub-
miniature jack for Type-K thermocouple probe connection
•Calculates Wet Bulb and Dew Point temperature
•Calculates airflow (CFM/CMM air volume) in air ducts using an air velocity
measurement and a user-programmed air duct area value
•Selectable units of measure
•MIN-MAX-AVG recording
•Programmable Auto Power OFF (APO) timer
•Low battery indication
•Setup mode for changing default settings and for entering area measurements for
airflow measurements

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3. Meter Description
3.1 Front and Side Descriptions
1. Temperature and Relative Humidity sensors
2. Backlit LCD (see separate section)
3. Control buttons (see separate section)
4. Type-K thermocouple sub-miniature jack
5. Vane Anemometer USB probe jack
Note: Accessory mount and battery compartment on back of meter

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3.2 Control Button Descriptions
Long press to power ON or OFF
VEL |TEMP
TYPE-K
Short press to switch between Air Velocity (VEL), Air
Temperature (TEMP), and Thermocouple Temperature (Type-K)
measurements (upper display digits). Air Velocity and Type-K
measurements require attachment of remote probes
WB|DP
Short press to switch between Wet Bulb and Dew Point
temperature displays (upper display digits)
%RH
FLOW
Short press to switch between Relative Humidity, Airflow, and
Area modes
Short press to access/exit Data Hold (freeze displayed reading)
MAX | MIN
AVG
Short press to step through MAX, MIN, and AVG recording
(REC) memories. Long press to exit and clear memories.
Short press to switch LCD backlight ON or OFF
SETUP
Long press to access/exit the SETUP mode
Return button. See SETUP mode section for programming steps
requiring use of this button
In normal operation, short press to change the measurement
units for the upper display digits. See SETUP mode section for
programming steps that require use of this button
In normal operation, short press to change the measurement
units for the lower display digits. See SETUP mode section for
programming steps that require use of this button

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3.3 LCD Description
TEMP
Air Temperature mode
VEL
Air Velocity mode (remote anemometer probe)
TYPE K
Type-K Thermocouple mode (remote Type-K probe)
WB
Wet Bulb temperature calculation
DP
Dew Point temperature calculation
Auto Power OFF active icon (see Setup mode)
Battery status
oC/oF
Temperature units of measure
x10
Multiply the display value by 10
AREA
Area measurement entered by user -- for airflow (volume)
measurements
Knots
Unit of measure for air velocity
MPH
Unit of measure for air velocity (miles per hour)
Ft/min
Unit of measure for air velocity (feet per minute)

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m/s
Unit of measure for air velocity (meters per second)
Km/h
Unit of measure for air velocity (kilometers per hour)
FLOW
Airflow (CMM/CFM air volume) mode
RH / %RH
Relative humidity mode / Relative humidity unit of measure
in2
Square inches (unit of measure for duct Area calculations)
cm2
Square centimeters (unit of measure for Area calculations)
ft2
Square feet (unit of measure for Area calculations)
CFM
Cubic feet per minute (unit of measure for airflow volume)
CMM
Cubic meters per minute (unit of measure for airflow volume)
x100
Multiply the displayed value by 100
SETUP
Appears when Setup mode is accessed
HOLD
Data Hold mode
REC
Appears when the MAX-MIN-AVG mode is accessed
MAX
Maximum reading
MIN
Minimum reading
AVG
Average reading
OFFSET
Appears in the Setup mode when programming a temperature
display offset for the Type-K thermocouple mode
OL or -OL
Out-of-range temperature measurement
- - - - - -
Type-K probe not connected
Upper display digits
Lower display digits

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4. Operation
4.1 Powering the Meter
The meter is powered by one 9V battery (rear compartment). Long press the power
button to switch the meter ON or OFF. The EM54 has an APO Sleep utility that
switches the meter OFF automatically after the programmable APO time has elapsed.
See the Setup mode for instructions on setting the sleep mode (SLP) APO timer.
4.2 Air Temperature and Relative Humidity Measurements
1. Temperature and RH sensors are located at the tip of the meter
2. Long press the power button to switch the meter ON
3. Short press the VEL|TEMP|TYPE-K button to step to the Air Temperature mode
(TEMP). The upper digits show the reading; short press to toggle oC/oF
4. Short press the %RH|FLOW button to select RH for display on the lower digits
5. If a measurement is out of range, the display will show ‘OL’ or ‘-OL’.
4.3 Wet Bulb and Dew Point Temperature Calculations
Wet Bulb and Dew Point Temperature calculations are based on air temperature and
relative humidity measurements.
1. Long press the power button to switch the meter ON
2. Short press the WB|DP button to toggle Wet Bulb (WB) and Dew Point (DP)
temperature modes. The upper digits show the reading
4.4 Type-K Thermocouple Measurements
Caution: Note the temperature range limit printed on the thermocouple connector (or verify the
range with the manufacturer). The supplied probe cannot be used to measure temperature
through the entire range listed in the specification section; measuring temperature beyond the
range printed on the thermocouple connector can damage the probe and the meter.
1. Connect a Type-K thermocouple sub-miniature plug
(shown here) to the jack in the meter’s right-side
compartment.
2. Short press VEL|TEMP|TYPE-K to step to the TYPE-K mode
3. Touch the thermocouple probe tip to the surface under test or hold in air; the upper
display digits show the reading. Short press to select oC or oF units
4. If the thermocouple is not connected to the meter when the Type-K mode is
selected, the display will show dashes
5. If a temperature measurement is out of range, the display will show ‘OL’ or ‘-OL’.
6. See the Setup mode section for setting a temperature display offset, if desired

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4.5 Air Velocity Measurements
1. Refer to the Vane Anemometer probe illustration on the right.
Connect the probe’s plug (2) into the USB jack in the meter’s
side (right) compartment
2. Short press the VEL|TEMP|TYPE-K button to step to the Air
Velocity mode (VEL)
3. Hold the probe by the handle (3) and place the vane (1) in the
flow of air and view the air velocity readings on the upper
display digits
4. Short press to select the units: m/s, ft/min, km/hr, MPH, or
knots. To set a default unit of measure see the Setup mode
section
4.6 Airflow (Volume) Measurements
1. Measure the Area of the air duct under test. Refer to the Area Equations below for
help on calculating area for rectangular/circular ducts and for useful calculations.
2. Connect the Vane Anemometer to the USB jack on the meter
3. Short press the %RH|FLOW button to select FLOW. Press to select CFM (cubic
feet per minute) or CMM (cubic meters per minute) for the Airflow (volume)
measurement units
4. Long press the SETUP button to access the Setup mode and then press 4 times to
step to the AREA screen
5. Press Return ( ) and use the arrows ( ) to select the Area Units: in2, cm2, or ft2
6. Press Return to access the SIZE screen. Press Return again and use the arrows to
select the decimal placement for the area value (note the x10 and x100 multipliers
on the display)
7. Press Return and use the arrows to adjust the flashing digit for the area value. Use
the Hbutton to select a new digit to edit. Continue in this way until the area of the
duct under test is accurately entered
8. Press Return to confirm the area value and then long press SETUP to exit
9. Insert the vane sensor in the air duct and read the airflow (volume of air) value on
the lower display digits
AREA EQUATIONS
CFM (ft3/min) = Air Velocity (ft/min) x Area (ft2)
CMM (m3/min) = Air Velocity (m/sec) x Area (m2) x 60

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4.7 LCD Backlight
Long press the backlight button to toggle the LCD backlight ON and OFF. Note that
excessive use of the backlight will shorten battery life.
4.8 Data Hold
In Data Hold mode, the displayed reading is locked. To enter/exit Data Hold mode, short
press the button. In Data Hold mode, the indicator is displayed.
4.9 MAX-MIN-AVG Record Mode
Short press the MAX|MIN/AVG button to activate the recording mode, the REC display
icon will appear indicating that the meter is now recording. Short press the
MAX|MIN/AVG button to step through the Maximum-Minimum-Average readings.
Long press MAX|MIN/AVG to exit the recording mode.
4.10 Setup Mode
1. Long press the SETUP button*
2. The first screen is the default TEMP UNIT for air temperature. Press Return to see
the setting. Use the arrows to set oC or oF
3. Press Return to see TYPE K OFFSET. Press Return again and use the arrows to select
a temperature offset, if desired
4. Press Return to see VEL UNITS. Press Return again to see the default units. Use the
arrows to select m/s, ft/min, km/hr, MPH, or knots
5. Press Return to see FLOW UNITS. Press Return again to see the default Airflow units;
use the arrows to select CFM or CMM
6. Press Return to see AREA UNIT. Press Return again to see the default area units and
use the arrows to change to in2, cm2, or ft2
7. Press Return to see AREA SIZE, press Return again and use the arrows to select the
decimal position for the area value. Press Return and use the arrows to adjust the
flashing digit. Use the Hbutton to select a new digit to edit. Continue in this way
until the area of the duct is accurately entered
8. Press Return to see SLP (sleep). Press Return to see the default APO time. Use the
arrows to set timer to 5, 10, 15, 20, 25, 30, 40, 60 minutes or OFF
9. Long press the SETUP button to exit the Setup mode
*Note that after you gain programming experience, you can use the arrows immediately
after you enter the Setup mode to quickly step through the Setup parameters.

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5. Maintenance
5.1 Cleaning and Storage
Wipe the housing with a damp cloth as needed. Do not use abrasives or solvents. If the
meter is not to be used for an extended period, remove the battery and store separately.
5.2 Battery Replacement
To replace the battery:
1. Switch the meter OFF
2. Disconnect all remote probes from the meter’s side compartment
3. Remove the screw that secures the rear battery compartment
4. Remove the battery compartment cover
5. Remove the old battery
6. Install new battery observing correct polarity
7. Close the compartment and secure with the screw before operating the meter
5.3 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.

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6. Specifications
6.1 General specifications
Battery power 9V battery
Auto Power OFF Selectable APO sleep timer in Setup mode
Operating Conditions 32 ~ 122°F (0 ~ 50°C)
Storage Conditions 14 ~ 140°F (-10 ~ 60°C)
Meter Weight 10 oz. (283.9g) with battery installed and no external probes attached
Meter Dimensions L x W x H: 10.8 x 2.6 x 1.8 in. (275 x 65 x 45mm)
Safety Compliance CE and RCM
Drop test 3.3 ft. (1m) not including removeable probes
Accessories 9V battery, Type-K probe, Vane Anemometer probe, carry pouch,
accessory/tripod mount, Quick Start document
6.2 Measurement specifications
Measurement
Range
Resolution
Accuracy
Air
Temperature
-22 ~ 140°F (-30 ~ 60°C)
1°F (0.1°C)
±1.8°F (±1.0°C)
50° ~ 86°F (10° ~ 30°C)
±3.6°F (±2.0°C)
-22° ~ 50°F (-30° ~ 9.9°C) and 88° ~
140°F (31° ~ 60°C)
Relative
Humidity
5 ~ 98%
0.1%
±3.5%
Dew Point
-22°F ~ 140°F (-30°C ~ 60°C)
1°F (0.1°C)
±4.8°F (3°C)
Wet Bulb
-22°F ~ 122°F (-30°C ~ 50°C)
1°F (0.1°C)
±4.8°F (3°C)
Type-K
Temperature
-148°F ~ 2502°F (-99.9°C ~
1372°C)
NOTE: The supplied Type-K
probe cannot be used to
measure temperature > rating
printed on the connector
1°F (0.1°C)
± (1.5% +1.8°F [1.0°C])
-148° ~ 212°F (-99.9° ~ 99.9°C)
± (1.5% +3.6°F [2.0°C])
212° ~ 2502°F (100° ~ 1372°C)
Air Velocity
0.4 ~ 30 (m/s)
79 ~ 5906 (ft/min)
1.4 ~ 108.0 (km/h)
0.9 ~ 67.2 (mph)
0.8 ~ 58.3 (knots)
0.01 (m/s)
1 (ft/min)
0.1 (km/h)
0.1 (mph)
0.1 (knots)
± (3% + 0.2 m/s)
± (3% + 39 ft/min)
± (3% + 0.7 km/h)
± (3% + 0.4 mph)
± (3% + 0.4 knots)
Airflow
0 ~ 999900 CFM
0 ~ 999900 CMM
0.001 ~
100
0.001 ~
100
Airflow is a calculation; airflow accuracy
is dependent on the air velocity
accuracy (specification listed above)

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7. Customer Support
Repair, Calibration, and Technical Support
https://support.flir.com
8. Three-Year Limited Warranty
This product is protected by FLIR’s 3-Year Limited Warranty. Visit
www.flir.com/testwarranty to read the 3-Year Limited Warranty document. Register
your product at the website to receive a free 1-year warranty extension.

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Corporate Headquarters
FLIR Systems, Inc.
2770 SW Parkway Avenue
Wilsonville, OR 97070 USA
Customer Support
Repair, Calibration, and Technical Support: https://support.flir.com
Publication Identification No.: EM54-en-US
Release Version: AA
Release Date: March 2019
Language: en-US