FLIR DM91 Manuale utente

USER MANUAL

FLIR MODEL DM91

True RMS Industrial Multimeter with Bluetooth®

FLIR DM91 USER MANUAL Document Identifier: DM91-en-US_AB 

 Table of Contents 
ADVISORIES 4 
1 Copyright 4 
2 Quality Assurance 4 
3 Documentation 4 
4 Disposal of Electronic Waste 4 
SAFETY 5 
INTRODUCTION 7 
1 Key Features 7 
METER DESCRIPTION 8 
1 Front and Back Descriptions 8 
2 Function Switch Positions 9 
3 Function Buttons and Selector/Navigation Pad 10 
3.1 MODE Button Operation 10 
3.2 Selector/Navigation Pad Operation 11 
4 Display Description 11 
5 Display Icons and Indicators 12 
5.1 Probe Detection Alert 13 
5.2 Out-of-range warning 13 
6 Mode Menu Bar Basics 14 
OPERATION 15 
1 Powering the Meter 15 
1.1 Auto Power Off (APO) 15 
2 Auto/Manual Range Mode 15 
3 Voltage and Frequency Measurements 16 
4 Resistance Measurements 17 
5 Continuity Test 17 
6 Classic Diode Test 18 
7 Smart Diode Test 19 
8 Capacitance Measurements 20 
9 Type K Temperature Measurements 21 
10 Current and Frequency Measurements 22 

FLIR DM91 USER MANUAL Document Identifier: DM91-en-US_AB 

10.1 Test Lead Current Measurements (A, mA, and µA) 22 
10.2 FLEX Clamp Adaptor Current Measurements 25 
11 Non-Contact Voltage Detector 26 
MENU BAR FOR EXTENDED FUNCTIONALITY 27 
1 Selecting Modes using the Menu Bar 27 
2 VFD Mode (ACV and ACA only) 27 
3 Peak Mode (ACV and ACA only) 27 
4 Min/Max/Avg Mode 27 
5 Frequency mode (ACV and ACA only) 28 
6 Relative mode 28 
7 Datalogger 28 
8 Settings Menu 29 
9 Data Hold and Auto Hold 30 
9.1 Data Hold Mode 30 
9.2 Auto Hold Mode 30 
BLUETOOTH® COMMUNICATION AND FLIR TOOLSTM 31 
MAINTENANCE 32 
1 Cleaning and Storage 32 
2 Battery Replacement 32 
3 Fuse Replacement 32 
4 Disposal of Electronic Waste 32 
SPECIFICATIONS 33 
1 General specifications 33 
2 Electrical Range Specifications 34 
TECHNICAL SUPPORT 39 
WARRANTY 40 
 
 
 

FLIR DM91 USER MANUAL Document Identifier: DM91-en-US_AB

1. Advisories

1.1 Copyright

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.

FLIR DM91 USER MANUAL Document Identifier: DM91-en-US_AB

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 idle 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.

FLIR DM91 USER MANUAL Document Identifier: DM91-en-US_AB

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

FLIR DM91 USER MANUAL Document Identifier: DM91-en-US_AB

3. Introduction

Thank you for selecting the FLIR DM91 True RMS Digital MultiMeter with Bluetooth®,

Type-K thermocouple, automatic datalogging, and work light features. The DM91 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

•Bluetooth® communication allows readings to be viewed on remote devices

•Customizable via easy-to-use Settings menu with on-screen menu navigation

•Automatic and Manual ranging

•Input over-voltage warning

•Automatic datalogging for up to 40,000 readings

•MIN-MAX-AVG memory

•PEAK MIN and PEAK MAX

•Flex Clamp direct input

•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

•Real-time calendar clock

•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 Guide.

FLIR DM91 USER MANUAL Document Identifier: DM91-en-US_AB

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 Aand 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

FLIR DM91 USER MANUAL Document Identifier: DM91-en-US_AB

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.

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) appears when the MODE button is pressed.

Meter is OFF and in full power-saving mode.

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 6.8,

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 µA current through the probe inputs. Use the MODE button to select

AC or DC.

Measure current through the probe inputs (A or mA). Use the MODE button to

select AC or DC.

Fig. 4-3 Function Switch

FLIR DM91 USER MANUAL Document Identifier: DM91-en-US_AB

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 6.8, 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 backlight’s default state is

ON.

Press to switch the work light ON or OFF.

4.3.1 MODE Button Operation

Switch Position

MODE button sequence of operation

AC → DC → °F or °C

Resistance → Continuity → Capacitance → Diode

AC → DC

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