Flir DM90 Instruction Manual
USER MANUAL
FLIR MODEL DM90
True RMS Industrial Multimeter
FLIR DM90 USER MANUAL Document Identifier: DM90-en-US_AA
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Table of Contents
1. ADVISORIES 4
1.1 Copyright 4
1.2 Quality Assurance 4
1.3 Documentation 4
1.4 Disposal of Electronic Waste 4
2. SAFETY 4
3. INTRODUCTION 6
3.1 Key Features 6
4. METER DESCRIPTION 7
4.1 Front and Back Descriptions 7
4.2 Function Switch Positions 8
4.3 Function Buttons and Selector/Navigation Pad 9
4.3.1 MODE Button Operation 9
4.3.2 Selector/Navigation Pad Operation 10
4.4 Display Description 10
4.5 Display Icons and Indicators 11
4.5.1 Probe Detection Alert 12
4.5.2 Out-of-range warning 12
4.6 Menu Icon Bar 13
5.OPERATION 14
5.1 Powering the Meter 14
5.1.1 Auto Power Off (APO) 14
5.2 Auto/Manual Range Mode 14
5.3 Voltage and Frequency Measurements 15
5.4 Resistance Measurements 16
5.5 Continuity Test 16
5.6 Classic Diode Test 17
5.7 Smart Diode Test 18
5.8 Capacitance Measurements 19
5.9 Type K Temperature Measurements 20
5.10 Current and Frequency Measurements 20
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5.10.1 Test Lead Current Measurements (A, mA, and µA) 21
5.10.2 FLEX Clamp Adaptor Current Measurements 24
5.11 Non-Contact Voltage Detector 25
5.12 Mode Icons and the Menu Bar 26
5.12.1 Selecting Modes using the Mode Menu Bar 26
5.12.2 VFD Mode (ACV and ACA only) 26
5.12.3 Peak Mode (ACV and ACA only) 26
5.12.4 Min/Max/Avg Mode 26
5.12.5 Frequency mode (ACV and ACA only) 27
5.12.6 Relative mode 27
5.12.7 Settings Menu 27
5.13 Data Hold and Auto Hold 28
5.13.1 Data Hold Mode 28
5.13.2 Auto Hold Mode 28
6. MAINTENANCE 29
6.1 Cleaning and Storage 29
6.2 Battery Replacement 29
6.3 Fuse Replacement 29
6.4 Disposal of Electronic Waste 29
7. SPECIFICATIONS 30
7.1 General specifications 30
7.2 Electrical Range Specifications 31
8. TECHNICAL SUPPORT 36
9. WARRANTY 37
9.1 FLIR Global Limited Lifetime Warranty 37
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1. Advisories
1.1 Copyright
© 2016, 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.
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 not to be used for an extended period of time.
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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.
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 DM90 True RMS Digital MultiMeter with Type-K
thermocouple and work light features. The DM90 can measure voltage up to 1000V
AC/DC and includes Low-Z (low impedance), VFD (low pass filter), Non-Contact Voltage
Detector, and Smart/Classic Diode modes. This device is shipped fully tested and
calibrated and, with proper use, will provide years of reliable service.
3.1 Key Features
6000 count 2.8” digital LCD display with bargraph
Measures Voltage, Current (A, mA, µA), Frequency, Resistance/Continuity,
Diode, Capacitance, Non-Contact Voltage, and Temperature
Customizable via easy-to-use Settings menu
Automatic and Manual ranging
Input over-voltage warning
MIN-MAX-AVG memory
PEAK MIN and PEAK MAX
Flex Clamp direct input
On-screen programming menu navigation
CLASSIC and SMART Diode modes
Variable-frequency drive VFD mode (low-pass filter)
Low-Z (low impedance) mode
Relative mode
Data Hold and Auto Hold
Auto Power OFF
Safety Category Rating: CAT IV-600V, CAT III-1000V
Equipped with batteries, test leads, alligator clips, test lead storage attachment,
Type-K thermocouple, and Quick Start Reference Guide.
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4. Meter Description
4.1 Front and Back Descriptions
Fig. 4-1 Front View
1. Work Light and NCV Detector
2. LCD Display
3. Navigation/OK buttons
4. MODE Button
5. RANGE Button
6. Work light Button
7. Rotary Function Switch
8. Positive (+) Probe Input Jack for A (Current).
9. Positive (+) Probe Input Jack for mA
(Current).
10. COM (-) Probe Input Jack
11. Positive (+) Probe Input Jack for all inputs
except A and mA
12. Display Backlight Button
13. Cancel/Return Button
14. Display HOLD Button
1. Test Lead holder attachment mounts
2. Tripod mount (test lead holder attaches here
also)
3. Tilt Stand (Battery Compartment located
beneath the stand)
Fig. 4-2 Rear View
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4.2 Function Switch Positions
Detect AC voltage through the non-contact sensor at the top of the meter.
Measure voltage through the probe inputs with a low-impedance load
positioned across the inputs that stabilizes the measurement.
Meter is switched OFF and in full power-saving mode.
FLEX Direct: Auxiliary channel for use with optional Flexible Current clamp or
standard clamp adaptors when > 600A measurements are required. In this
mode, the meter will display true rms ACA measurements from the connected
device. Frequency (Hz) can be displayed by pressing the MODE button.
Measure AC voltage (V) through the probe inputs.
Measure DC voltage (V) through the probe inputs.
Measure low voltage (mV) through the probe inputs. Use the MODE button to
select AC/DC voltage.
Measure temperature through the probe inputs using a thermocouple
adaptor. Use the MODE button to select Temperature (see Section 5.12.7,
Settings Menu, to select °C or °F as the default unit).
Measure resistance, continuity, capacitance, or diode through the probe
inputs. Use the MODE button to select the desired function.
Measure current through the probe inputs (A or mA). Use the MODE button to
select AC or DC.
Measure µA current through the probe inputs. Use the MODE button to select
AC or DC.
Fig. 4-3 Function Switch
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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, press to select Manual range mode.
From Manual range mode, press < 1 second to change the range (scale). Press
> 1 second to activate Auto range mode
Press to toggle between Hold mode and normal display mode. Use the Settings
menu (see Section 5.12.7, Settings Menu) to select Data hold or Auto hold.
Use the selector/navigation pad to enable extended functionality modes and
to navigate mode menu options.
Press to cancel/exit a screen in the Settings menu (no function in the normal
mode).
Press to enable/disable the display backlight. The display backlight is ON when
the meter is powered up.
Press to enable/disable the work light.
4.3.1 MODE Button Operation
Switch Position
MODE button sequence of operation
AC → DC → °F or °C
Resistance → Continuity → Capacitance → Diode
AC → DC
AC → DC
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4.3.2 Selector/Navigation Pad Operation
There are five (5) ‘soft’ Function buttons arranged in a square, as shown in Figure 4-4.
The function of these buttons changes, depending on the menu-driven sub-function
selected.
Fig. 4-4 Selector Navigation Pad
Pressing the OK button (center) selects a menu-driven option. The OK button is also
used to enter deeper sub-menus of selection screens.
The LEFT/RIGHT buttons:
In normal mode, the left/right buttons are used to move the menu cursor
In Settings mode, the left/right buttons are used to change the value of an option
The UP/DOWN buttons:
In normal mode, the up/down buttons have no function
In Settings mode, the up/down buttons are used to change an option.
4.4 Display Description
Fig. 4-5 Display Icons
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4.5 Display Icons and Indicators
Low Impedance mode
Measured voltage is > 30 V (AC or DC)
Non-Contact Voltage detector
MAX (Maximum) reading value displayed
MIN (Minimum) reading value displayed
AVG (Average) reading value displayed
PEAK MAX value displayed
PEAK MIN value displayed
Auto range mode
Data Hold mode.
Primary display (large digits)
Secondary display (smaller digits)
Battery voltage status
Auto power off function enabled
AC current or voltage
DC current or voltage
Flex Clamp Direct Input
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Continuity function
Diode test function
MENU BAR ICON: VFD mode (see Section 4.6, Menu Icon Bar)
P
MENU BAR ICON: Peak mode
MENU BAR ICON: Min/Max/Avg modes
Hz
MENU BAR ICON: Frequency mode
MENU BAR ICON: Relative mode
MENU BAR ICON: Settings mode
Work light active
Bar Graph Measurement Indicator
4.5.1 Probe Detection Alert
For current measurements, when the probe leads are not plugged into the correct jack
sockets for the measurement selected by the function switch, the probe display alert
‘Prob’ is shown.
4.5.2 Out-of-range warning
If the input is over/under the full-scale range in Manual range mode, or if the signal has
exceeded the maximum/minimum input in Auto range mode, ‘OL’ is displayed.
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