Hioki LR8431-20 User manual

EN
MEMORY HiLOGGER
LR8431-20
HEAT FLOW LOGGER
LR8432-20
Measurement Guide
Jan. 2016 Revised edition 3
LR8431B981-03 16-01H

Procedure
1
Procedure
Operation and Screen Types
(p.15) Describes the screen types and an overview of the
operating keys.
Measurement Procedure
(p.19) Describes procedures from measurement prepara-
tion to analysis.
Monitoring Voltage Fluctua-
tions (p.22)
This section describes voltage measurement using
an AC transducer to acquire voltage fluctuation data
for one week, with the data automatically saved on a
CF card.
(The example transducer provides 0 V - 10 V DC
output proportional to 0 V - 150 V AC rms input.)
Monitoring Temperature
Changes (p.24)
This section describes temperature measurement
using a type K thermocouple to acquire temperature
data once per second, for monitoring temperature
changes. The post-measurement saving method is
also described.
Monitoring Energy Con-
sumption (p.27)
This section describes pulse measurement using a
watt-hour meter* to acquire integrated power con-
sumption data for one month.
* The example watt-hour meter provides an output of
50,000 pulses/kWh.
Monitoring Heat Flow (Model
LR8432-20 only) (p.29)
This section describes heat flow and temperature
measurement using the Heat Flow Sensor and ther-
mocouples. (LR8432-20 only)
Here we explain how to measure heat flow and tem-
perature every second (using the Heat Flow Sensor
and thermocouples K) and how to measure changes
in these variables.
Analysis (p.33) View and calculate waveform measurement values
using the A/B cursors.
LR8431B981-03

Introduction
2
Thank you for purchasing the HIOKI “Model LR8431-20 Memory HiLogger” or
“LR8432-20 Heat Flow Logger.”
This Measurement Guide consists of some basic application examples. Before using
the instrument, be sure to read the Instruction Manual carefully.
The product appearance and screen shots shown in this document are based on
Model LR8431-20.
(Except for descriptions of functions installed in the LR8432-20 only)
Introduction
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 authorized Hioki distributor or reseller.
Confirm that these contents are provided.
Model LR8431-20
Memory HiLogger or Model
LR8432-20 Heat Flow Logger.....1
Model Z1005 AC Adapter............1
with supplied power cord
Measurement Guide
(This document) ..........................1
USB Cable....................................1
CD.................................................1
• Instruction Manual (PDF)
• Logger Utility Instruction Manual (PDF)
• Logger Utility (Data acquisition
application program)
The latest version can be
downloaded from our web site.

Confirming Package Contents
3
About options: Contact your authorized Hioki distributor or reseller.
 Model 9780 Battery Pack
 Model Z1005 AC Adapter
 Model 9641 Connection Cable
(for pulse inputs)
 Model 9782 Carrying Case
 Model 9812 Soft Case
 Model 9728 PC Card (512M)
 Model 9729 PC Card (1G)
 Model 9830 PC Card (2G)
 Model 9809 Protection Sheet
 Z2012 Heat Flow Sensor (LR8432-20 only)
 Z2013 Heat Flow Sensor (LR8432-20 only)
 Z2014 Heat Flow Sensor (LR8432-20 only)
 Z2015 Heat Flow Sensor (LR8432-20 only)
 Z2016 Heat Flow Sensor (LR8432-20 only)
 Z2017 Heat Flow Sensor (LR8432-20 only)
 Z5008 Thermally Conductive Tape
(LR8432-20 only)
Applying any excessive force to the Heat Flow Sensor can dam-
age the sensor. When transporting the Heat Flow Sensor in a
case, store the sensor in the pocket of the 9782 Carrying Case.
Do not store the Heat Flow Sensor in the 9812 Soft Case.

Safety Information
4
This instrument is designed to conform to IEC 61010 Safety Standards,
and has been thoroughly tested for safety prior to shipment. However,
using the instrument in a way not described in this manual may negate
the provided safety features.
Before using the instrument, be certain to carefully read the following
safety notes:
Safety Information
Mishandling during use could result in injury or death, as well
as damage to the instrument. Be certain that you understand
the instructions and precautions in the manual before use.
With regard to the electricity supply, there are risks of electric
shock, heat generation, fire, and arc flash due to short cir-
cuits. If persons unfamiliar with electricity measuring instru-
ment are to use the instrument, another person familiar with
such instruments must supervise operations.
Safety Symbols
Indicates cautions and hazards. When the symbol is printed on the instrument,
refer to a corresponding topic in the Instruction Manual.
Indicates DC (Direct Current).
Indicates AC (Alternating Current).
Indicates the ON side of the power switch.
Indicates the OFF side of the power switch.

Safety Information
5
Notation
In this document, the risk seriousness and the hazard levels are classified as fol-
lows.
Indicates an imminently hazardous situation that will result in death or seri-
ous injury to the operator.
Indicates a potentially hazardous situation that may result in death or seri-
ous injury to the operator.
Indicates a potentially hazardous situation that may result in minor or mod-
erate injury to the operator or damage to the instrument or malfunction.
Indicates information related to the operation of the instrument or mainte-
nance tasks with which the operators must be fully familiar.
IMPORTANT
Indicates information related to the operation of the instrument or mainte-
nance tasks with which the operators must be fully familiar.
Symbols for Various Standards
This symbol indicates that the product conforms to safety 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, Windows® 8 or Windows® 10.
Click: Press and quickly release the left button of the mouse.
Double click: Quickly click the left button of the mouse twice.

Safety Information
6
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.
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 measuring instrument in an environment desig-
nated with a higher-numbered category than that for which
the instrument is rated could result in a severe accident,
and must be carefully avoided.
• Never use a measuring instrument that lacks category label-
ing in a CAT II to CAT IV measurement environment. Doing
so could result in a serious accident.
CAT II:
When directly measuring the electrical outlet receptacles of the primary elec-
trical circuits in equipment connected to an AC electrical outlet by a power
cord (portable tools, household appliances, etc.)
CAT III:
When measuring the primary electrical circuits of heavy equipment (fixed
installations) connected directly to the distribution panel, and feeders from
the distribution panel to outlets
CAT IV:
When measuring the circuit from the service drop to the service entrance,
and to the power meter and primary overcurrent protection device (distribu-
tion panel)

Safety Information
7
Difference between “Measurement” and “Recording”
The measurement and recording processes 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.
Measurement: The acquisition of input values into the instrument’s internal 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
8
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 authorized Hioki distributor or reseller.
• 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 your authorized Hioki distributor
or reseller for replacements.
Installation environment
Operating Precautions
Before Use
Instrument Installation
Installing the instrument in inappropriate locations may
cause a malfunction of instrument or may give rise to an acci-
dent. Avoid the following locations:
• Exposed to direct sunlight or high temperature
• Exposed to corrosive or combustible gases
• Exposed to a strong electromagnetic field or electrostatic
charge
• Near induction heating systems (such as high-frequency
induction heating systems and IH cooking equipment)
• Susceptible to vibration
• Exposed to water, oil, chemicals, or solvents
• Exposed to high humidity or condensation
• Exposed to high quantities of dust particles
• This instrument is not drip-proof. Install the instrument with the mea-
surement cables hanging lower than the instrument to prevent water
or other fluid from entering the instrument through the measurement
cables and terminal block.
• The maximum operating (ambient) temperature for the instrument is
40°C. Do not attempt to use in higher temperature environments.

Operating Precautions
9
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 instrument 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-current conduc-
tors, 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.
Do not place the instrument on an unstable table or an inclined place.
Dropping or knocking down the instrument can cause injury or damage
to the instrument.
Horizontal placement Upright placement

Operating Precautions
10
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 interference to the recep-
tion of radio and television broadcasts.
Handling the Cords and Cables
The cable is hardened under the 0°C or colder environment. Do not
bend or pull it to avoid tearing its shield or cutting cable.

Operating Precautions
11
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.
Using the AC Adapter
• Use only the supplied Model Z1005 AC Adapter. AC adapter
input voltage range is 100 V to 240 VAC at 50 Hz/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.
• Do not connect the supply voltage improperly. Doing so may damage
the instrument’s internal circuitry.
• Avoid using an uninterruptible power supply (UPS) or DC/AC inverter
with rectangular wave or pseudo-sine-wave output to power the instru-
ment. Doing so may damage the instrument.
• When the power is turned off, do not apply voltage or current to the
terminals. 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 instru-
ment to malfunction. However, Longer interruptions may cause the
instrument 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
12
About Inputs and Measurement
• Do not use the instrument with circuits that exceed its rat-
ings or specifications. Doing so may cause it to become
hot, resulting in bodily injury.
• To avoid electrical hazards and damage to the instrument,
do not apply voltage exceeding the rated maximum to the
input terminals.
• The maximum input voltage (and the maximum rated volt-
age to earth) for the analog input terminals is 30 V DC rms
(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 instrument connected to test objects in
environments where a voltage surge might exceed the
dielectric withstand voltage. Doing so could result in dam-
age to the instrument, 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
authorized Hioki distributor or reseller for inspection.
IMPORTANT
Select Hioki 9641 Connection Cable for use as a cable for the
pulse input connector.
The waveform for an open channel may sometimes appear to be influ-
enced 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 connect-
ing the positive and negative terminal.

Operating Precautions
13
CD Handling
CD precautions
• Exercise care to keep the recorded side of discs free of dirt and
scratches. When writing text on a disc’s label, use a pen or marker with
a soft tip.
• Keep discs inside a protective case and do not expose to direct sun-
light, high temperature, or high humidity.
• Hioki is not liable for any issues your computer system experiences in
the course of using this disc.
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 instru-
ment.
• Never eject a CF card /USB flash drive while measuring or when the
instrument 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 instrument while a USB flash drive is connected.
Damage could result.
• As the CF card/USB flash drive is sensitive to static electricity, dam-
age to the CF card/USB flash drive or wrong operations by the instru-
ment may occur due to static electricity. Please be careful when
handling it.
•With some USB flash drives, the instrument 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.

Operating Precautions
14
Refer to the instruction manual included with the Heat Flow Sensor for
details.
Before use, check that the resistance between the positive terminal and
negative terminal on the Heat Flow Sensor is 2kΩ or less and that the
wires are not disconnected.
• 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 instrument
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 instrument from a
computer (using a USB cable).
Type B USB Drive
Heat Flow Sensor (Models Z2012, Z2013, Z2014, Z2015, Z2016, Z2017)
Do not subject the Heat Flow Sensor to excessive force.
Thermally Conductive Tape Z5008
Stop using double-sided Thermally Conductive Tape immediately if it
touches the human body and causes an abnormality.

Operation and Screen Types
15
Operation and Screen Types
Select the item to
change.
Show available
setting options.
Select the desired
setting.
Changing screen contents
CF Card Slot
External control
terminals
CHARGE LED
USB Port
POWER
Switch
Operating Keys
(Rear)
Battery
Compartment
Apply the new set-
ting,
or cancel it.
Analog Input
Terminals
Pulse Input
Connector
USB flash
drive SlotAC Adapter
Socket
WAVE/DATA
Selects among waveform
screen displays (p. 16).
SET
Displays the Settings
screens, and switches
among the screen tabs with
each press (p. 17).
FILE
Displays file information
(p. 18).
CH/
Select channels.
ESC
Cancels changes to set-
tings.
Cursor Keys
Moves the position
of the cursor (blink-
ing selection) on
the screen.
ENTER
Accepts displayed
settings.
KEY LOCK
Disables keypad
operations. Press
and hold the left
and right cursor keys simul-
taneously for three seconds
to lock and unlock the keys.
(Zero Adjust)
Performs zero ad-
justment.
Press the up and
down keys simultaneously
to execute.
Press to save data manual-
ly (p. 26).
Press the center key to se-
lect waveform scrolling or
A/B cursor movement, then
press the left and right cur-
sor keys to scroll or move
(p. 33).
Setup and display
Saving operations
Scroll waveforms and
read cursor values
Choose a screen
Start and stop measure-
ment. The LED at the left
lights green while mea-
suring.
Start and stop
measurement
Operating Keys

Operation and Screen Types
16
Selects between
seven display
types.
The screen switch-
es each time you
press the key.
Operational infor-
mation is displayed
along the bottom of
the screen.
[Wave] Screen
Measurement data is displayed
as waveforms.
[Value+Cmnt] Screen
Measurement data is displayed
as numerical values with com-
ments.
[Wave+Calc] Screen
Measurement data is displayed
as waveforms with calculation
results.
[Gauge+Wave] Screen
Measurement data is displayed
as waveforms with gauges.
[Wave+Value] Screen
Measurement data is displayed
as waveforms and numerical
values.
[Value] Screen
Measurement data is displayed
as numerical values.
[Wave+Crsr] Screen
Measurement data is displayed
as waveforms with cursor val-
ues.
Waveform/Numerical Screens
Selection is also
available from the
name of the current
screen displayed
near the bottom right

Operation and Screen Types
17
CH Screen
Make input channel settings
while viewing the monitor dis-
play.
Scaling Screen
Make these settings to convert
measured values to arbitrary
units for display.
*Displayed to be [Conv/Calc]
on Model LR8432-20.
Comment Screen
Enter channel comments.
Setting Screen
Make settings for recording.
Set numerical calculation,
auto-saving and timers.
Range Screen
Make settings while viewing all
channel settings.
Trig & Alm Screen
Recording criteria (triggering)
and warning sounds can be set
for each channel.
System Screen
Configure the system environ-
ment.
Selects between
seven display
types.
The screen switch-
es each time you
press the key.
Operational infor-
mation is displayed
along the bottom of
the screen.
Settings Screens
Press the left/right
cursor keys to se-
lect between the
Settings screens.

Operation and Screen Types
18
File Screen
View and manage files on the
CF Card or USB flash drive.
File Screen
Operational infor-
mation is displayed
along the bottom of
the screen.