FLIR CM275 User manual

USER MANUAL
FLIR MODEL CM275
Imaging Clamp Meter with IGMTM and Bluetooth®

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Table of Contents
1. ADVISORIES 5
1.1 Copyright 5
1.2 Quality Assurance 5
1.3 Documentation 5
1.4 Disposal of Electronic Waste 5
2. SAFETY 6
3. INTRODUCTION 8
3.1 Key Features 8
4. METER DESCRIPTION 9
4.1 Front and Back Meter Descriptions 9
4.2 Function Switch Positions 10
4.3 Function Buttons and Selector/Navigation Pad 10
4.3.1 MODE Button Sequence of Operations 11
4.3.2 Navigation Pad/OK Button 11
4.4 Status Bar Display Icons 11
4.5 Other Display Icons 12
5. METER POWER 13
5.1 Powering the Meter 13
5.2 Auto Power OFF (APO) 13
5.3 Battery Type Selection 13
6. MENU SYSTEM 14
6.1 Using the Menu System 14
6.2 Main Menu Options 14
6.2.1 Image Mode 14
6.2.2 Thermal Settings Menu 14
6.2.3 Gallery Mode 15
6.2.4 Advanced Functions Menu 15
6.2.5 General Settings Menu 15
7. GENERAL SETTINGS 16
7.1 General Settings Navigation 16
7.1.1 Diode SMART/CLASSIC 16
7.1.2 APO (Auto Power OFF) 16
7.1.3 Datalogger Sample Rate 16
7.1.4 Real-time Clock 16
7.1.5 Battery Selection 17
7.1.6 Bluetooth® ON/OFF 17
7.1.7 Button-press tone ON/OFF 17
7.1.8 Language selection 17

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7.1.9 Delete all Datalogger readings 17
7.1.10 Delete all Stored Images 17
7.1.11 View HELP Screen 17
7.1.12 Viewing meter component information 17
8. THERMAL IMAGING 18
8.1 Thermal Imager Basics 18
8.2 Thermal Imager Operation 19
8.3 Thermal Settings Menu (Color Palette, Emissivity, Temperature Units, Laser
Pointer, Crosshairs) 20
8.4 Image Mode Menu 21
8.5 Image Capture 21
8.6 Image Freeze (Data Hold) 21
9. CLAMP METER OPERATION 22
9.1 Auto/Manual Range Mode 22
9.2 Out-of-range Warning (OL) 22
9.3 Data Hold 22
9.4 VFD Mode (Low Pass Filter) 22
9.5 MAX-MIN Mode 23
9.6 DCA Zero Mode 23
9.7 Datalogger 23
9.8 Current and Frequency Measurements 25
9.9 Clamp Adaptor (FLEX) Current and Frequency Measurements 26
9.10 Inrush Current Measurements 27
9.11 Voltage, Lo Z, and Frequency Measurements 28
9.12 Resistance Measurements 29
9.13 Continuity Test 29
9.14 Classic Diode Test 30
9.15 Smart Diode Test 31
9.16 Capacitance Measurements 32
10. BLUETOOTH® COMMUNICATION 33
11. APPENDICES 34
11.1 Emissivity Factors for Common Materials 34
11.2 Non-Uniformity Correction 34
11.3 Infrared Energy and Thermal Imaging Overview 35
12. MAINTENANCE 36
12.1 Cleaning and Storage 36

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12.2 Battery Replacement 36
12.3 Disposal of Electronic Waste 36
13. SPECIFICATIONS 37
13.1 General specifications 37
13.2 Thermal Imaging Specifications 38
13.3 Electrical Specifications 39
14. TECHNICAL SUPPORT 43
15. WARRANTY 44

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1. Advisories
1.1 Copyright
© 2017, 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:
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.

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2. Safety
Safety Notes
Before operating the device, you must read, understand, and follow all instructions,
dangers, warnings, cautions, and notes.
FLIR Systems reserves the right to discontinue models, parts or accessories, and other
items, or to change specifications at any time without prior notice.
Remove the batteries if the device is to be stored for an extended period.
Warning Statements
Do not operate the device if you do not have the correct knowledge. Incorrect operation
of the device can cause damage, shock, injury or death to persons.
Do not start a measuring procedure before you have set the function switch to the
correct position. Failure to do so can cause damage to the instrument and can cause
injury to persons.
Do not change to the resistance mode when measuring voltage. This can cause damage
to the instrument and can cause injury to persons.
Do not measure the current on a circuit when the voltage increases to more than 1000 V.
This can cause damage to the instrument and can cause injury to persons.
You must disconnect the test leads from the circuit under test before you change the
range. Failure to observe this warning can damage the instrument and cause bodily
injury.
Do not replace the batteries before you remove the test leads. This can cause damage to
the instrument and can cause injury to persons.
Do not use the device if the test leads and/or the device show signs of damage. Injury to
persons can occur.
Be careful performing measurements if the voltages are > 25 VAC rms or 35 VDC. There is
a risk of shock from these voltages. Injury to persons can occur.
Do not do diode, resistance or continuity tests before you have removed the power from
capacitors and other devices under test. Injury to persons can occur.
Be careful when performing voltage checks on electrical outlets. These checks are
difficult because of the uncertainty of the connection to the recessed electrical contacts.
You must not rely solely on this this device when determining if the terminals are not
“live”. There is a risk of electrical shock. Injury to person can occur.
Do not touch expired/damaged batteries without gloves. Injury to persons can occur.
Do not cause a short circuit of the batteries. This can cause damage to the instrument
and can cause injury to persons.
Do not put the batteries into a fire. Injury to persons can occur.
Use extreme caution when the laser pointer is on.
Do not point the beam toward anyone's eye or allow the beam to strike the eye from a
reflective surface.
Do not use the laser near explosive gases or in other potentially explosive areas.
Refer to the CAUTION statement label (shown below) for critical safety information.

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Fig. 2.1 Laser Safety Information
Cautions
Do not use the device in a manner not specified by the manufacturer. This can cause damage to
the protection provided.
This symbol, adjacent to another symbol or terminal, indicates that the user
must refer to the user manual for further information.
This symbol, adjacent to a terminal, indicates that, under normal use, hazardous
voltages may be present.
Double insulation.
UL listing is not an indication or a verification of the accuracy of the meter

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3. Introduction
Thank you for selecting the FLIR CM275 Imaging Clamp meter with IGMTM (Infrared
Guided Measurement) and Bluetooth®. The CM275 is a True RMS 600A AC/DC clamp
meter with a radiometric Lepton Thermal Imaging system, integrated VFD Mode, Inrush
Current capture, a Lo Z mode for eliminating ‘ghost’ voltages, Bluetooth®
communications capabilities, and many others as listed in the Key Features section
below. This device is shipped fully tested and calibrated and, with proper use, will
provide years of reliable service.
3.1 Key Features
6000 count digital TFT display with bargraph
Built-in Infrared Imager with gallery mode for storing, viewing, and transmitting images via
Bluetooth®
Capture fully radiometric thermal images where a temperature measurement is saved for
each display pixel
Imager features Laser pointer, cross hairs targeting, and an intuitive menu system
High power work lights built-in
Auto Range True RMS AC/DC 600 A capability
Auto Range True RMS AC/DC 1000 V capability
Frequency AC bandwidth (45-400Hz)
Frequency Measurements to 60KHz
Flex clamp adaptor input for FLIR TA72_TA74 and other clamp adaptors
Input over-voltage warning
Automatic Datalogger memory (40,000 readings over 10 sets) with selectable sample rate and
Bluetooth® transmission capability
Resistance and Continuity measurements
Capacitance and Diode measurements
Data HOLD
Inrush current
DCA zero function
Low Z (Impedance) mode
Minimum/Maximum memory
Integrated VFD mode (Low-pass filter)
Auto power off (can be disabled or preset to 1, 2, 5, or 10 minutes)
Jaw opening 35mm (1.38”)
Easy-access battery cover mechanism
Optional FLIR TA04 battery charging system
Micro USB port (battery compartment) for transferring images/data logs to PC; operates
similarly to a conventional thumb drive
Safety Category Rating: CAT IV-600V, CAT III-1000V
Equipped with batteries, test leads, carry pouch, and Quick Start booklet.

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4. Meter Description
4.1 Front and Back Meter Descriptions
Fig. 4-1 Front View
1. Jaw opening trigger
2. Navigation Pad/OK button
3. MODE button
4. RANGE button
5. Data Hold (short press)/Work Light (long
press)
6. Rotary function switch
7. COM (negative -) Probe Input jack
8. Positive (+) Probe Input jack
9. Image Save button (short press)
10. Return/Exit button
11. IGMTM button (short press)
12. Color TFT Display
13. Clamp jaw
14. Work lights
15. Laser pointer lens
16. Thermal Imaging lens
17. Tripod mount
18. Battery compartment (micro USB port)
19. Battery compartment lock/unlock
Fig. 4-2 Rear View

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4.2 Function Switch Positions
Select this position when connecting a FLIR Flex Clamp Adaptor. See Section
9.9, Clamp Adaptor (FLEX) Current and Frequency Measurements
Select this position to measure in the low impedance mode. See Section
9.11, Voltage, Lo Z, and Frequency Measurements
Switch the meter OFF (full power saving mode).
Measure AC/DC Voltage through the probe inputs. See Section 9.11,
Voltage, Lo Z, and Frequency Measurements
Measure resistance and continuity through the probe inputs. See Section
9.12, Resistance Measurements and Section 9.13, Continuity Test
Measure capacitance and diode through the probe inputs. See Section 9.16,
Capacitance Measurements, Section 9.14, Classic Diode Test, or Section
9.15, Smart Diode Test
Measure AC/DC current through the clamp jaws. See Section 9.8, Current
and Frequency Measurements
4.3 Function Buttons and Selector/Navigation Pad
Use to select a sub-function of the primary function. See Section 4.3.1, MODE
Button Operation,for details
From Auto range mode, short press to select Manual range mode.
From Manual range mode, short press to change the range (scale). Long press to
return to Auto range mode
Short press to activate/deactivate the Thermal Imager
Use the Navigation pad to enable/navigate menu options
Press to return from a menu screen
Short press to enter/exit the Hold mode. Long press to switch work lights on/off
Short press to save a fully radiometric thermal image or a clamp meter display
screen. Images are saved to the device’s file system accessible in Gallery
mode. The thermal imager must be fully initialized (indicated by display of IR
temperature measurement) before radiometric data can be captured.

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4.3.1 MODE Button Sequence of Operations
Rotary Switch Position
Mode Button Sequence of Operations
ACA > Frequency
ACV > DCV > Frequency
ACV > DCV > Frequency
Resistance < > Continuity
Capacitance < > Diode
ACA > DCA > Frequency
4.3.2 Navigation Pad/OK Button
There are five (5) buttons arranged in a square that make up the Navigation pad, as
shown in Fig. 4-3.
Fig. 4-3 Navigation Pad
OK button (center): Open the menu and select/change menu options
LEFT/RIGHT buttons: Navigate the menu system
UP/DOWN buttons: Navigate the menu system
4.4 Status Bar Display Icons
The Status Bar is located at the top right of the display.
Fig. 4-4 Status Bar Display Icons
L to R, row 1: Datalogger, Data Hold, Auto Range, Laser, Work Light, Bluetooth®,
APO, and Battery status
L to R, row 2: Inrush current, DCA Zero, Flex Clamp icon and range, VFD, and Low
Impedance mode
Note that Diode and Continuity symbols also appear in the Status bar area of the display.

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4.5 Other Display Icons
MAX (Maximum) reading
MIN (Minimum) reading
oC, oF
Temperature units
Ԑ
Emissivity
AC current or voltage
DC current or voltage
Continuity
Resistance
Diode
V
Voltage
A
Current (Amperes)
F
Farad (for Capacitance)
Hz
Hertz (Frequency)
103(kilo)
10-3 (milli)
10-6 (micro)
OL
Out of Range warning
Bar Graph
Bar Graph overload indicator
Meter is measuring voltage > 30 V (AC or DC)

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5. Meter Power
5.1 Powering the Meter
1. Set the function switch to any position to switch on the meter.
2. If the battery indicator shows that the battery voltage is low, if one of the Low
Battery screens appears (Fig. 5-1), or if the meter does not power on, replace the three
(3) ‘AA’ batteries. See Section 12.2, Battery Replacement. If using the Model TA04
charging system, please recharge the rechargeable battery.
FIG. 5-1 Low Battery Alerts
5.2 Auto Power OFF (APO)
The meter enters sleep mode after a programmable period of inactivity, to customize
this setting please see Section 7.1.2, APO (Auto Power OFF). The default time-out is 10
minutes. The time can be set to 1, 2, 5, or 10 minutes (select OFF to disable the APO).
20 seconds prior to entering APO mode, the meter beeps; at this point, press any
button or turn the Rotary Switch to reset the APO timer.
5.3 Battery Type Selection
The user must enter the battery type (Lithium or Alkaline) in the General Settings
menu before use. This allows the meter to display battery status as accurately as
possible. Refer to Section 7.1.5, Battery Selection.

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6. Menu System
6.1 Using the Menu System
Press OK to open the main menu, shown below:
Fig. 6-1 Main Menu
Use the Navigation Pad left/right arrows to highlight an icon. From left to right
the icons are Image Mode, Thermal Settings, Gallery (for viewing stored images
and data logs), Advanced Menu, and General Settings.
Press OK to open a menu or to set an option ON or OFF. When an option is ON a
blue dot will appear next its icon. In some cases, use the navigation arrows to
select an option.
Use the Return button to exit menu levels and to return to the normal
display mode.
The mode of the meter dictates what icons are available for use.
6.2 Main Menu Options
6.2.1 Image Mode
This Image mode icon is only available in the thermal imaging mode. The Image
mode has two options:
Image + Clamp mode (default): Display will show Clamp meter data on the
thermal images while in the thermal imaging mode.
Image-only mode: Display shows thermal image data only in the thermal
imaging mode.
Press OK on the Image mode icon to open the menu and use the arrow buttons to
select the desired option.
6.2.2 Thermal Settings Menu
Press OK at the Thermal Settings icon to access the
following options: Color Palette, Emissivity, Temperature units,
Laser pointer ON/OFF, and Cross hairs ON/OFF. Refer to
Section 8.3, Thermal Settings Menu (Color Palette, Emissivity,
Temperature Units, Laser Pointer, and Crosshairs) for detailed
information.
Fig. 6-2 Thermal Settings Menu

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6.2.3 Gallery Mode
In Gallery mode, view stored images and logged readings.
Press OK at the Gallery icon. The display will show rows of stored images on
the lower area of the display and data logs on the upper area.
Use the up/down arrows to step between image and reading log areas.
Use the left/right arrows to scroll through data logs or images.
Press OK to open a reading log or an image.
Press OK again on an image to bring up icons that will permit you to delete the
image, transmit the image via Bluetooth®, and to resize the image to full screen.
Press OK again on a data log set to bring up icons that permit you to delete the
log or to transmit the log via Bluetooth®.
Note that there is a micro USB port located in the battery compartment that
allows you to transfer data logs and images directly to your PC. When connected
to a PC, use the meter’s internal memory as you would a standard external
storage drive.
For More detailed information, see Section 7.1.9, Delete all Datalogger Readings,
Section 7.1.10, Delete all Stored Images, Section 8.5, Image Capture, and Section
9.7, Datalogger
6.2.4 Advanced Functions Menu
Press OK at the Advanced Functions Menu icon to access the functions listed
below. Highlight a function using the arrow buttons and then press OK to activate it.
Refer to the dedicated section for each as listed below for detailed information:
VFD (low pass filter), see Section 9.4, VFD mode
MAX-MIN Readings, Section 9.5, MAX-MIN mode
Inrush Current, Section 9.10, Inrush Current mode
DCA Zero, Section 9.6, DCA mode
Datalogger, Section 9.7, Datalogger
6.2.5 General Settings Menu
1. Press OK to open the main menu.
2. Press OK at the General Settings icon to access the options.
3. See next section for detailed information on the General Settings mode

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7. General Settings
7.1 General Settings Navigation
Under General Settings, the user can customize a variety of features.
1. Press OK to open the Main Menu
2. Scroll to the icon and press OK to open the Settings menu (see Fig. 7-1)
3. Press OK on a menu item and customize the item per the table below
4. Use the button to exit screens and to return to the normal mode
5. A blue dot next to an option indicates that an option is ON
Fig. 7-1 General Settings Menu
7.1.1 Diode SMART/CLASSIC
Press OK to toggle SMART/CLASSIC diode modes
7.1.2 APO (Auto Power OFF)
Press OK to open the sub-menu. Scroll to OFF, 1, 2, 5, or 10 minutes for the Auto Power
OFF timer and press OK to select. Press to exit the menu
7.1.3 Datalogger Sample Rate
Press OK to access the selector. Use the arrow buttons to select the desired datalogger
sampling rate from 1 ~ 99 seconds. Press OK to confirm
7.1.4 Real-time Clock
Press OK to open the date/time setting screen. Use the arrow buttons to scroll through
the date and time fields and to select the current date and time. Press OK to confirm

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7.1.5 Battery Selection
Press OK to toggle LITHIUM AA and ALKALINE AA battery types. Select the battery type in
use.
7.1.6 Bluetooth® ON/OFF
Press OK to toggle Bluetooth® ON/OFF (default is ON). Refer to Section 10, Bluetooth®
7.1.7 Button-press tone ON/OFF
Press OK to toggle the button-press tone ON/OFF
7.1.8 Language selection
Press OK to open the menu. Scroll to the desired language and press OK. Press to exit
7.1.9 Delete all Datalogger readings
Press OK to delete all datalogger records. The meter will ask for confirmation
7.1.10 Delete all Stored Images
Press OK to delete all saved images. The meter will ask for confirmation
7.1.11 View HELP Screen
Press OK to view FLIR support contact information
7.1.12 Viewing meter component information
Press OK to view meter component firmware version information and Laser data:
Meter firmware version
Lepton® camera interface firmware version
Bluetooth® firmware version
Laser data

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8. Thermal Imaging
8.1 Thermal Imager Basics
In the Thermal Imaging mode, the user can measure a
targeted surface’s temperature by detecting the energy
emitted by the surface under test. Color variations
reflect temperature variations. See Section 11.3,
Infrared Energy and Thermal Imaging Overview for in-
depth information. The laser pointer and display cross
hairs assist in targeting.
Press the IGM button to open the Thermal Imager. In
Fig 8-1 the meter is set to color palette IRON. Select
other palettes in the Thermal Settings Menu (refer to
Section 8.3, Thermal Settings Menu).
Fig. 8-1 Thermal Image Example
1. IR Temperature measurement represents the temperature of the spot sensed.
Note that while the imager initializes, dashes will display.
2. Status Icon Bar
3. Clamp Meter Measurement displays
4. Cross hairs for targeting spots
5. Thermal image
6. Main Menu
7. Lowest reading measured in the current frame
8. Thermal scale shows the range of colors for the thermal image. The lighter the
color, the warmer the temperature; the darker the color, the cooler the
temperature.
9. Highest reading measured in the current frame.
Note: Use the Thermal Settings Menu to change the emissivity; refer to Section 8.3,
Thermal Settings Menu. See also Section 11.1, Emissivity Factors for Common
Materials.

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8.2 Thermal Imager Operation
To customize the Thermal Imager, refer to Section 8.3, Thermal Settings Menu. For
basic operation, follow these steps:
1. Set the function switch to any position.
2. Press the IGM button to switch the Thermal Imager ON. Point the thermal
imaging lens (back of meter) toward an area to test.
3. The display will show the temperature in the upper left hand corner for the
targeted area.
4. In the Thermal Imaging mode, use the laser pointer and display cross hairs for
targeting. These can be switched ON or OFF in the Thermal Settings Menu.
5. In the Thermal imaging mode, the meter continues to operate normally as a
Clamp Meter. Note that in the Thermal Imaging mode, view clamp
measurements and function on the left side of the display. If desired, the
meter can be set to image-only mode in the Image Mode menu, see Section
8.4, Image Mode Menu.
6. The Distance to Spot ratio for the imager is 30:1 meaning that the
measurement spot is 30 times smaller than the distance from meter to spot
(at a distance of 30”, the meter ‘sees’ a target spot of 1”). See Fig. 8-2.
7. The thermal imager’s FOV (Field of View) is 50 degrees (side view) and 38.6
degrees (top view) see Fig. 8-3 (a) and (b).
Fig. 8-2 Distance-to-Spot ratio 30:1

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Fig. 8-3 (a) Field of View –side view Fig. 8-3 (b) Field of View - top view
8.3 Thermal Settings Menu (Color Palette, Emissivity,
Temperature Units, Laser Pointer, Crosshairs)
1. Press OK to open the main menu
2. Scroll to the Thermal Settings icon and press OK
3. Refer to the Thermal Settings screenshot and details
below
Fig. 8.4 Thermal Settings Menu
Icon
Description
Use
Color Palette
Press OK to step through the display color palettes (Iron,
Rainbow, or Gray).
Emissivity
Press OK and then use up/down arrows to scroll to a preset
(0.95, 0.85, 0.75, or 0.65) or to the fine tuning Ԑicon. To
fine tune, press OK at the fine tuning icon and use the arrow
buttons to set the value, press OK to confirm. The available
range is 0.10 to 0.99 in 0.01 steps.
Temp. units
Press OK to toggle the temperature units (oC/oF)
Laser pointer
Press OK to toggle the laser pointer ON (blue circle) or OFF
Cross hairs
Press OK to switch the cross hairs ON or OFF