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.