Hioki LR8431-20 User manual

EN
LR8431-20
MEMORY HiLOGGER
Instruction Manual
Aug. 2015 Revised edition 3
LR8431B980-03 15-08H

Contents
i
Contents
Introduction ..............................................................................1
Confirming Package Contents................................................2
Safety Information....................................................................3
Operating Precautions.............................................................6
Chapter 1
Overview ____________________________________13
1.1 Product Overview and Features .............................13
1.2 Measurement Flow ..................................................14
1.3 Names and Functions of Parts ...............................16
1.4 Screen Configurations ............................................18
1.5 Basic Operation .......................................................21
Screen Operations ...........................................................21
Starting and Stopping Recording .....................................22
Disabling Key Operations (Key-Lock Function) ...............23
Saving Data ......................................................................23
Verifying the Input Level (Level Monitor) ..........................24
Chapter 2
Measurement Preparations_________________25
2.1 Using the Battery Pack (Option) ............................26
Install the Battery Pack ....................................................29
Charge the Battery Pack ..................................................29
2.2 Connecting the AC Adapter ....................................30
2.3 Connecting Measurement Cables to the Memory 
HiLogger ...................................................................31
Connecting Measurement Leads or Thermocouples 
(for voltage or temperature, respectively) ........................32
Connecting the Optional Model 9641 Connection Cable
(for Pulse Signal Input) .....................................................33
2.4 Turning the Power On and Off ...............................34
2.5 Zero Adjustment ......................................................35
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LR8431B980-03

Contents
ii
Chapter 3
Setting before Measurement_______________ 37
3.1 Pre-Operation Inspection ....................................... 37
3.2 Operating Flow Overview ....................................... 38
3.3 Setting Configuration 1 – Recording Settings ..... 42
Specify the Recording Interval .........................................42
Setting the Display Time Base (horizontal axis 
magnification,set as needed) ...........................................43
Selecting the Recording Start/stop Method .....................44
Set the Recording Length for Repeated or One-time 
Recording .........................................................................45
Enable Digital Filtering (noise suppression) (as needed) 45
Automatic Saving .............................................................46
Replacing Removable Storage During Real-Time Saving 48
3.4 Setting Configuration 2 – Input Channel Settings 49
Voltage Measurement Settings ........................................50
Temperature Measurement Settings ...............................51
Integration (Count) Measurement Settings ......................53
Revolution Measurement Settings ...................................54
3.5 Display Settings ...................................................... 56
Selecting Waveform Display Color ..................................56
Specifying Vertical Display Range by Magnification and 
Zero Position (vertical axis expansion/compression) .......56
Specifying the Vertical Display Range by Upper and 
Lower Limits (expansion/compression) ............................57
Converting Units (Scaling function) ..................................58
3.6 Entering Comments ................................................ 60
3.7 Viewing All Channel Settings in a List .................. 62
Batch Copying Channel Settings .....................................63
Batch Setting Waveform Display/Hide and Waveform 
Color Settings for All Channels ........................................63
Initializing Settings (to factory defaults) ...........................64
Aligning Zero Positions on the Grid .................................64
Display Celsius (°C) temperature values as 
Fahrenheit (°F) .................................................................65

Contents
iii
Chapter 4
Specifying Criteria for Measurements 
(Triggering, Alarm and Timer) ______________67
4.1 Setting Criteria to Start and Stop Recording ........68
Setting the Input Signal Trigger Threshold (Level Trigger) 69
Setting Lower and Upper Trigger Thresholds 
(Window Trigger) ..............................................................70
Selecting Trigger Sources and Combinations ..................71
Setting Criteria for Pre-Trigger Recording (Pre-Trig) .......72
4.2 Alarm Output ............................................................73
4.3 Confirming Trigger and Alarm Criteria Settings 
(List) ..........................................................................75
4.4 Starting and Stopping Recording by Timer ..........76
4.5 About Recording Operation ...................................78
Chapter 5
Waveform Analysis__________________________81
5.1 Viewing Waveforms .................................................82
Scrolling Waveforms ........................................................82
Verifying Waveform Display Position ...............................82
Magnifying and Compressing Horizontally .......................83
Viewing Any Waveform Location (Jump Function) ..........83
5.2 Selecting Display Options ......................................84
Displaying Gauges ...........................................................84
Displaying Cursor Values .................................................84
Specifying a Waveform Time Span ..................................86
Viewing Input Signals as Numerical Values .....................87
5.3 Inserting Event Marks (Search Function) ..............88
Inserting Event Marks While Viewing Waveforms ............88
Inserting Event Marks Using External Input Signals ........89
Searching Event Marks ....................................................90
Chapter 6
Saving & Loading Data _____________________91
6.1 About Saving and Loading Data ............................91
6.2 Using a CF Card/USB flash drive ...........................93
CF Card Insertion & Removal ..........................................94
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5
3
6

Contents
iv
USB flash drive Insertion & Removal ...............................94
Formatting a CF Card/USB flash drive ............................95
6.3 Saving Data ............................................................. 96
Automatic Saving .............................................................97
Selecting the Manual Saving Method 
[Quick Save]/[Select & Save] ...........................................98
Saving Waveform Data (with the SAVE Key) ..................99
Capturing a Screen Image (With the SAVE Key) ...........100
Saving Numerical Calculation Results 
(With the SAVE Key) ......................................................101
Saving Setting Configurations ........................................102
6.4 Loading Data on the Memory HiLogger .............. 103
Loading a Setting Configuration .....................................103
Loading Waveform Data and Screen Images ................104
6.5 Data Management ................................................. 105
Switching removable storage .........................................105
Viewing Folder Contents and the Parent Folder ............106
Deleting Data .................................................................106
Renaming Files and Folders ..........................................107
Copying Data .................................................................108
Sorting Files ...................................................................109
6.6 Transferring Data to a Computer 
(USB Drive Mode) ................................................. 110
Select the USB Drive Mode ...........................................110
Connecting the USB Cable ............................................111
Chapter 7
Numerical Calculations ___________________113
7.1 Calculation Methods ............................................. 113
Auto Calculation .............................................................114
Manual Calculation ........................................................115
Apply Calculations to a Specific Time Span 
(Manual Calculation Only) ..............................................116
7.2 Numerical Value Calculation Expressions ......... 117

Contents
v
Chapter 8
System Environment Settings ____________ 119
8.1 Screen and Key Operation Settings ....................120
Using the Auto-Resume Function 
(Resume After Power Restoration) ................................120
Adjust Backlight Brightness ............................................120
Enabling and Disabling the Backlight Saver ..................121
Selecting Black or White Screen Background ................121
Enabling or Disabling the Beeper ...................................121
Selecting the Horizontal (Time) Axis Display .................122
Selecting the Display Language .....................................122
8.2 CSV File Saving Settings ......................................123
CSV File Data Decimal and Separator Characters ........123
8.3 Making System Settings .......................................124
Setting the Date and Time .............................................124
Initializing the Memory HiLogger (System Reset) ..........125
Switching the USB mode ...............................................126
Self-Test .........................................................................127
Chapter 9
External Control __________________________ 129
9.1 Connecting to the External Control Terminals ...129
9.2 External Trigger Input ...........................................131
9.3 External Signal Output (Trigger Output) .............132
9.4 Alarm Signal Output (Alarm Output) ...................134
9.5 Synchronous Measurements with Multiple 
Instruments ............................................................135
Chapter 10
Specifications_____________________________ 137
Chapter 11
Maintenance and Service_________________ 147
11.1 Troubleshooting ....................................................147
11.2 Cleaning .................................................................149
11.3 Disposing of the Instrument .................................150
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8
9
10
11
Appendix
Index
6

Contents
vi
Appendix____________________________________ A1
Appendix 1 Error Messages and Remedial Actions.........A1
Appendix 2 File Naming ......................................................A7
Appendix 3 Text File (CSV) Internal Format......................A8
Appendix 4 Binary File Size Calculation............................A9
Appendix 5 List of Default Settings..................................A10
Appendix 6 Maximum Recordable Time ..........................A11
Appendix 7 Reference .......................................................A12
Appendix 8 Concerning Noise Countermeasures ..........A13
Appendix 9 Using the Application Program....................A19
Installing Logger Utility ....................................................A20
Installing the USB Driver .................................................A23
Connecting the Memory HiLogger to the Computer with 
a USB Cable ...................................................................A26
Starting and Ending Logger Utility ..................................A29
Uninstalling the Logger Utility .........................................A29
Appendix 10Frequently Asked Questions.......................A30
Installation and Settings ..................................................A30
Triggering ........................................................................A32
Measuring .......................................................................A33
Data Saving ....................................................................A34
Logger Utility ...................................................................A38
Appendix 11Pulse Input Circuit Diagram.........................A39
Index___________________________________Index 1

Introduction
1
Thank you for purchasing the HIOKI "Model LR8431-20 Memory
HiLogger."
To obtain maximum performance from the instrument, please read
this manual carefully, and keep it handy for future reference.
Registered trademarks
• Windows is a registered trademark of Microsoft Corporation in
the United States and/or other countries.
• CompactFlash is a registered trademark of Sandisk Corporation
(USA).
Introduction

Confirming Package Contents
2
About options:
Contact your dealer or Hioki representative for details.
Confirming Package Contents
When you receive the instrument, inspect it carefully to ensure that no damage
occurred during shipping. In particular, check the accessories, panel switches,
and connectors. If damage is evident, or if it fails to operate according to the
specifications, contact your dealer or Hioki representative.
Confirm that these contents are provided.
Model LR8431-20 ......................... 1
Memory HiLogger
Model Z1005 AC Adapter............ 1
with supplied power cord
(p. 30)
Measurement Guide....................1
USB Cable....................................1
CD.................................................1
• Instruction Manual (PDF) 
(This document)
• Logger Utility Instruction Manual (PDF)
• Logger Utility (Data acquisition 
application program)
(p. A26)
The latest version can be
downloaded from our web site.
Model 9780 Battery Pack
Model Z1005 AC Adapter
Model 9641 Connection Cable (for pulse inputs)
Model 9782 Carrying Case
Model 9812 Soft Case
Model 9727 PC Card (256MB)
Model 9728 PC Card (512MB)
Model 9729 PC Card (1GB)
Model 9830 PC Card (2GB)
Model 9809 Protection Sheet

Safety Information
3
This manual contains information and warnings essential for safe operation of the
instrument and for maintaining it in safe operating condition. Before using it, be sure
to carefully read the following safety precautions.
The following symbols in this manual indicate the relative importance of cautions
and warnings.
Safety Information
This instrument is designed to comply with IEC 61010 Safety
Standards, and has been thoroughly tested for safety prior to
shipment. However, mishandling during use could result in
injury or death, as well as damage to the instrument. 
However, using the instrument in a way not described in this
manual may negate the provided safety features.
Be certain that you understand the instructions and precau-
tions in the manual before use. We disclaim any responsibil-
ity for accidents or injuries not resulting directly from
instrument defects.
Safety Symbols
In the manual, the symbol indicates particularly important information that the
user should read before using the instrument.
The symbol printed on the instrument indicates that the user should refer to a
corresponding topic in the manual (marked with the symbol) before using the
relevant function.
Indicates DC (Direct Current).
Indicates AC (Alternating Current).
Indicates the ON side of the power switch.
Indicates the OFF side of the power switch.
Indicates that incorrect operation presents an extreme hazard that could
result in serious injury or death to the user.
Indicates that incorrect operation presents a significant hazard that could
result in serious injury or death to the user.
Indicates that incorrect operation presents a possibility of injury to the user
or damage to the instrument.
Indicates advisory items related to performance or correct operation of the
instrument.

Safety Information
4
Accuracy
We define measurement tolerances in terms of f.s. (full scale), rdg. (reading) and
dgt. (digit) values, with the following meanings:
f.s. (maximum display value or scale length)
The maximum displayable value or scale length. This is usually the name of the cur-
rently selected range.
Example: For the 1 V range, f.s. = 1 V
rdg. (reading or displayed value)
The value currently being measured and indicated on the measuring instrument.
dgt. (resolution)
The smallest displayable unit on a digital measuring instrument, i.e., the input value
that causes the digital display to show a "1" as the least-significant digit.
Symbols for Various Standards
This symbol indicates that the product conforms to regulations set out by the
EC Directive.
This is a recycle mark established under the Resource Recycling Promotion
Law (only for Japan).
WEEE marking:
This symbol indicates that the electrical and electronic appliance is put on the
EU market after August 13, 2005, and producers of the Member States are
required to display it on the appliance under Article 11.2 of Directive 2002/96/
EC (WEEE).
Ni-MH
Other Symbols
Indicates the prohibited action.
(p. #) Indicates the location of reference information.
Indicates that descriptive information is provided below.
[ ] The names of setting objects and buttons on the screen are indicated
by square brackets [ ].
SET
(Bold characters) Bold characters within the text indicate operating key labels.
Unless otherwise specified, "Windows" represents Windows 2000, Windows XP, Win-
dows Vista, Windows 7 or Windows 8.
Click: Press and quickly release the left button of the mouse.
Double click: Quickly click the left button of the mouse twice.

Safety Information
5
Measurement categories
To ensure safe operation of measurement instruments, IEC 61010 establishes safety stan-
dards for various electrical environments, categorized as CAT II to CAT IV, and called mea-
surement categories.
Using a measurement instrument in an environment designated with a higher-numbered cat-
egory than that for which the instrument is rated could result in a severe accident, and must
be carefully avoided.
Use of a measurement instrument that is not CAT-rated in CAT II to CAT IV measurement
applications could result in a severe accident, and must be carefully avoided.
Difference between "Measurement" and "Recording"
The measurement and recordingprocesses are distinguished as follows for the purposes of
these instructions.
Measured data (data acquired in internal memory)is erased whenever a new measurement
starts. To retain data, always record (save) it.
CAT II Primary electrical circuits in equipment connected to an AC electrical outlet by a power cord (portable tools, household appliances, etc.)
CAT II covers directly measuring electrical outlet receptacles.
CAT III Primary electrical circuits of heavy equipment (fixed installations) connected directly to the distribution panel, and feeders from the distribution panel to
outlets.
CAT IV The circuit from the service drop to the service entrance, and to the power
meter and primary overcurrent protection device (distribution panel).
Measurement: The acquisition of input values into internal HiLogger memory or to a PC
via communications.
Recording: Storing measurement data on a CF card, USB flash drive or on a PC via
data communication.

Operating Precautions
6
Follow these precautions to ensure safe operation and to obtain the full benefits of
the various functions.
• Before using the instrument for the first time, verify that it operates normally to
ensure that no damage occurred during storage or shipping. If you find any dam-
age, contact your dealer or Hioki representative.
• Before using the instrument, make sure that the insulation on the cables is undam-
aged and that no bare conductors are improperly exposed. Using the instrument in
such conditions could cause an electric shock, so contact your dealer or Hioki rep-
resentative for replacements.
• Operating temperature and humidity: 0 to 40°C at 80% RH or less (non-conden-
sating)
• Temperature and humidity range for guaranteed accuracy: 23±5°C, 80%RH or
less
Operating Precautions
Before Use
Instrument Installation
Avoid the following locations that could cause an accident or damage to the
instrument. Exposed to direct sunlight
Exposed to high tempera-
ture In the presence of corrosive
or explosive gases
Exposed to water, oil, other
chemicals, or solvents
Exposed to high humidity or
condensation
Exposed to strong electro-
magnetic fields
Near electromagnetic radia-
tors
Exposed to high levels of
particulate dust Near induction heating sys-
tems
(e.g., high-frequency induc-
tion heating systems and IH
cooking utensils)
Subject to vibration
The maximum operating (ambient) temperature for the LR8431-20
is 40°C. Do not attempt to use in higher temperature environ-
ments.

Operating Precautions
7
Installation Precautions
• If the instrument is used in any state other than the following, the
measurement accuracy may not satisfy the device specifications.
• Leave sufficient space around the ventilation holes and install the
instrument with the holes unobstructed.
• Avoid temperature changes around the terminal block. Especially
avoid directed airflow such as from an electric fan or air conditioner
vent.Thermocouple inputs are prone to measurement errors.
• When the HiLogger is moved to a location with significantly dif-
ferent ambient temperature, allow at least 30 minutes for thermal
equalization before measuring.
• Correct measurement may be impossible in the presence of
strong magnetic fields, such as near transformers and high-cur-
rent conductors, or in the presence of strong electromagnetic
fields such as near radio transmitters.
• If liquid enters the enclosure through an air vent or other opening, it
may damage the instrument's internal circuitry. Exercise caution con-
cerning the surrounding environment when installing the instrument.
Horizontal placement Upright placement
Handling the Instrument
• Do not allow the instrument to get wet, and do not take mea-
surements with wet hands. This may cause an electric shock.
• Do not attempt to modify, disassemble or repair the instru-
ment; as fire, electric shock and injury could result.
To avoid damage to the instrument, protect it from physical shock
when transporting and handling. Be especially careful to avoid
physical shock from dropping.
This instrument may cause interference if used in residential
areas. Such use must be avoided unless the user takes special
measures to reduce electromagnetic emissions to prevent interfer-
ence to the reception of radio and television broadcasts.

Operating Precautions
8
Handling the Cords and Cables
• Avoid stepping on or pinching cables, which could damage the
cable insulation.
• To avoid breaking the cables and probes, do not bend or pull them.
• To avoid damaging the power cord, grasp the plug, not the cord,
when unplugging it from the power outlet.
Before Turning Power On
Using the Battery Pack
• For battery operation, use only the HIOKI Model 9780 Battery
Pack. We do not take any responsibility for accidents or
damage related to the use of any other batteries.
See: 2.1, "Using the Battery Pack (Option)" (p. 26)
Using the AC Adapter
• Use only the supplied Model Z1005 AC Adapter. AC adapter
input voltage range is 100 to 240 VAC (with ±10% stability) at
50/60 Hz. To avoid electrical hazards and damage to the
instrument, do not apply voltage outside of this range.
• Turn the instrument off before connecting the AC adapter to
the instrument and to AC power.
• To avoid electrical accidents and to maintain the safety spec-
ifications of this instrument, connect the power cord pro-
vided only to a 3-contact (two-conductor + ground) outlet.
• Use only the designated power cord with this instrument.
Use of other power cords may cause fire.
• Before turning the instrument on, make sure the supply volt-
age matches that indicated on its power connector. Connec-
tion to an improper supply voltage may damage the
instrument and present an electrical hazard.
When the power is turned off, do not apply voltage or current to
the connectors. Doing so may damage the instrument.
• After use, always turn OFF the power.
• Brief power interruptions of 40 ms or less will not cause this
instrument to malfunction. However, Longer interruptions may
cause the Memory HiLogger to shut itself off, so consider local
power conditions before installing, as appropriate.
• To ensure that recording is not interrupted by power outages, you
can use the Z1005 AC Adapter and 9780 Battery Pack together.

Operating Precautions
9
About Inputs and Measurement
• The maximum input voltage (and the maximum rated volt-
age to earth) for the analog input terminals is 30 Vrms (or 60
V DC). If these limits are exceeded, the instrument may be
damaged and personal injury or death could occur, so do
not attempt measurement.
• Do not leave the Memory HiLogger connected to test objects
in environments where a voltage surge might exceed the
dielectric withstand voltage. Doing so could result in damage
to the Memory HiLogger, bodily injury or fatal accident.
• Channels are insulated by semiconductor relays. When a
voltage beyond the specification is applied between the
channels, the semiconductor relay may short circuit. Please
ensure that a voltage beyond specification, especially a
surge such as a lightning, is never applied. When an abnor-
mal measurement value is observed, please contact your
dealer or Hioki representative for inspection.
The waveform for an open channel may sometimes appear to be
influenced by the signals of the other channels being measured. If
you do not like this, please set the waveform display of the open
channel to OFF or short-circuit the input terminals of the open
channel by connecting the positive and negative terminal.

Operating Precautions
10
CD Handling
• Always hold the disc by the edges, so as not to make fingerprints
on the disc or scratch the printing.
• Never touch the recorded side of the disc. Do not place the disc
directly on anything hard.
• Do not wet the disc with volatile alcohol or water, as there is a
possibility of the label printing disappearing.
• To write on the disc label surface, use a spirit-based felt pen. Do
not use a ball-point pen or hard-tipped pen, because there is a
danger of scratching the surface and corrupting the data. Do not
use adhesive labels.
• Do not expose the disc directly to the sun's rays, or keep it in
conditions of high temperature or humidity, as there is a danger
of warping, with consequent loss of data.
• To remove dirt, dust, or fingerprints from the disc, wipe with a dry
cloth, or use a CD cleaner. Always wipe from the inside to the
outside, and do no wipe with circular movements. Never use
abrasives or solvent cleaners.
• Hioki shall not be held liable for any problems with a computer
system that arises from the use of this CD, or for any problem
related to the purchase of a Hioki product.

Operating Precautions
11
Using a CF Card/USB flash drive
• Inserting a CF card/USB flash drive upside down, backwards or in the
wrong direction may damage the CF card, USB flash drive, or HiLogger.
• Never eject a CF card /USB flash drive while measuring or when the
HiLogger is or accessing the card. Data on the CF card/USB flash
drive may be destroyed. (The CF icon/USB flash drive icon at the
lower right is red while the card is being accessed.)
• Do not transport the HiLogger while a USB flash drive is connected.
Damage could result.
• As the CF card/USB flash drive is sensitive to static electricity, damage
to the CF card/USB flash drive or wrong operations by the HiLogger
may occur due to static electricity. Please be careful when handling it.
• With some USB flash drives, the HiLogger may not start up if power is
turned on while the USB flash drive is inserted. In such a case, turn
power on first, and then insert the USB flash drive. It is recommended
to try out operation with a USB flash drive before starting to use it for
actual measurements.
• The Flash memory in a CF card/USB flash drive has a limited operat-
ing life. After long-term usage, data storage and retrieval become diffi-
cult. In this case, replace the CF card/USB flash drive with a new one.
• We cannot provide compensation for data loss in a CF card/USB flash
drive, regardless of content or cause of the damage. Data is also cleared
from memory if a long time passes after measuring. Always maintain a
backup of important data stored on a CF card/USB flash drive.
• Although real-time saving to USB flash drive is supported, a CF card is
recommended for data preservation. Performance cannot be guaranteed
when using storage media other than a Hioki-specified CF card option.
• Use a USB flash drive whose continuous current consumption does not
exceed 300 mA (peak 500 mA). (The peak value is displayed as "Max
Power" under the USB flash drive self-test on the [System] screen.)
• Depending on how USB is used, the USB connector and instrument set-
tings may vary as shown in the chart below.
• The three USB methods of use described in the chart below involve
exclusive settings and cannot be used simultaneously.
USB method of use Connector
used [System] screen USB mode setting
Use a USB flash drive. Type A USB Memory (Default)
Communicate with the LR8431-20
and initiate measurement using the
Logger Utility software from a com-
puter (using a USB cable). Type B USB Communication
Read files on a CF card that is con-
nected to the LR8431-20 from a
computer (using a USB cable). Type B USB Drive

Operating Precautions
12