Hioki 8205-10 Instruction Manual

Instruction Manual

8205-10

MICRO HiCORDER

July 2013 Revised edition 10 8205B981-10 13-07H

Contents

Introduction i
Inspection i
Safety Notes ii
Notes on Use v
Chapter Summary viii

Chapter 1 Product Overview 1

1.1 Product Overview 2

1.2 Features

1.3 Front Panel 4

1.4 LCD (Display)

1.5 Printout Information 7

Chapter 2 Measurement P rocedures 9

2.1 Preparations 9

2.2 DC Voltage Measurement 13

2.3 AC Voltage Measurement

2.4 AC Current Measurement 1 21

2.5 AC Current Measurement 2

2.5.1 When Measuring High Voltage and High

Frequency Signals 30

2.6 AC Current Measurement 3

2.7 Common Measurement Operations

17

25

31
33

3

6

Chapter 3 Changing the Recording Paper 37

3.1 Opening and Closing the Printer Cover 37

3.2 Installing Recording Paper

38

Chapter 4 Specifications 39

4.1 General Specifications 39

4.2 Voltage Measurement Input Specifications

4.3 Current Measurement Input Specifications 42

4.4 Display Specifications

4.5 Recorded Information 44

4.6 Recording Time

41

43

44

Chapter 5 Maintenance and Service 45

5.1 Storage Precautions 45

5.2 Cleaning

5.3 Cleaning the Printer Head 47

5.4 Service

46

48

_____________________________________________________________________

Introduction

Thank you for purchasing the Hioki 8205-10 MICRO
HiCORDER. To obtain maximum performance from the
instrument, please read this manual first, and keep it handy
for future reference.

Inspection

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.

Accessories

9344 CARRYING CASE 1
L9257 CONNECTION CORD 1
9235 RECORDING PAPER (15 m) 1
Roll Paper Spools 2
AC Power Cord 1
Instruction Manual 1

i

Options

9235 RECORDING PAPER (15 m, 10 rolls) 1
9236-01 RECORDING PAPER

(15 m, Climate-resistant; 10 rolls) 1
9650 CLAMP ON SENSOR 1
9651 CLAMP ON SENSOR 1

*

9667 FLEXIBLE CLAMP ON SENSOR

1
9668 CLAMP ON SENSOR 1
*: A separate conversion adapter is also necessary.

Contact your dealer or Hioki representative.

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Inspection

ii

R

_____________________________________________________________________

SafetyNotes

This instrument is designed to conform to IEC 61010
Safety Standards, and has been thoroughly tested for

DANGE

Safety Symbols

safety prior to shipment. However, 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. We disclaim any responsibility for
accidents or injuries not resulting directly from
product defects.

This manual contains information and warnings essential
for safe operation of the instrument and for maintaining it
in safe operating condition. Before using the instrument,
be sure to carefully read the following safety notes.

The symbol printed on the instrument indicates that
the user should refer to a corresponding topic in the
manual (marked with the
relevant function.
In the manual, the symbol indicates particularly
important information that the user should read before
using the instrument.

symbol) before using the

Indicates a grounding terminal.
Indicates DC (Direct Current).
Indicates AC (Alternating Current).
Indicates both DC (Direct Current) and AC (Alternating

Current).
Indicates the ON side of the power switch.
Indicates the OFF side of the power switch.

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Safety Notes

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R

iii

The following symbols in this manual indicate the relative
importance of cautions and warnings.

Indicates that incorrect operation presents an extreme

DANGE

WARNING

CAUTION

NOTE

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.

Advisory items related to performance or correct
operation of the instrument.

Accuracy

We define measurement tolerances in terms of f.s. (full
scale) values, with the following meanings:

f.s.

(maximum display or scale value, or length of scale)
Signifies the maximum display (scale) value or the length
of the scale (in cases where the scale consists of unequal
increments or where the maximum value cannot be
defined).
In general, this is the range value (the value written on
the range selector or equivalent) currently in use.

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Safety Notes

iv

_____________________________________________________________________

Measurement categories

This instrument complies with CAT III safety requirements.
To ensure safe operation of measurement instruments, IEC
61010 establishes safety standards for various electrical
environments, categorized as CAT II to CAT IV, and called
measurement categories. These are defined as follows.

CATII

CATIII

CATIV

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.

Primary electrical circuits of heavy equipment (fixed
installations) connected directly to the distribution panel,
and feeders from the distribution panel to outlets.

The circuit from the service drop to the service entrance,
and to the power meter and primary o vercurrent
protection device (distribution panel).

Using a measurement instrument in an environment
designated with a higher-numbered category 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.

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Safety Notes

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R

Notes on Use

Follow these precautions to ensure safe operation and to
obtain the full benefits of the various functions.

The maximum input voltage is 500 V DC/AC. Attempting

v

DANGE

to measure voltage in excess of the m aximum input
voltage could destroy the instrument and result in
personal injure or death.
The maximum rated voltage between input terminals
and ground is 500 V DC/500 VrmsAC. Attempting to
measure voltages exceeding 500 V with respect to
ground could damage the instrument and result in
personal injury.
Connection cords or clamp-on sensor should be made
only at the secondary side of a breaker, so the breaker
can prevent an accident if a short circuit occurs.
Connections should never be made to the primary side
of a breaker, because unrestricted current flow could
cause a serious accident if a short circuit occurs.
To avoid short circuits and potentially life-threatening
hazards, never attach the clamp to a circuit that
operates at more than the maximum rated voltage, or
over bare conductors.

To avoid electric shock, do not allow the instrument to

WARNING

get wet, and do not use it when your hands are wet.
To avoid electric accidents and to maintain the safety

specifications of this instrument, connect the power
cord provided only to a 3-contact (two-conductor +
ground) outlet.

To avoid electric shock when measuring live lines,

wear appropriate protective gear, such as insulated
rubber gloves, boots and a safety helmet.

Do not use the product where it may be exposed to

corrosive or combustible gases. The product may be
damaged or cause an explosion.

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Notes on Use

vi

_____________________________________________________________________

CAUTION

This instrument is designed for indoor use, and operates
reliably from 5 to 40℃.
Do not store or use the instrument where it could be
exposed to direct sunlight, high temperature or humidity, or
condensation. Under such conditions, the instrument may
be damaged and insulation may deteriorate so that it no
longer meets specifications.
This instrument is not designed to be entirely water- or
dust-proof. To avoid damage, do not use it in a wet or
dusty environment.
To operate from DC power, pay careful attention to polarity
when making power connections, and set the power source
switch to the DC position (
changing the power source, unplug the (

) before use. Also, before

) power cord
from the outlet to prevent hazards, and remove the
connection cord from any object under test.
Avoid stepping on or pinching the cable, which could
damage the cable insulation.
Keep the cables well away from heat sources, as bare
conductors could be exposed if the insulation melts.
To prevent an electric shock accident, confirm that the
white or red portion (insulation layer) inside the cable is not
exposed. If a color inside the cable is exposed, do not use
the cable.
Be careful to avoid dropping the clamps or otherwise
subjecting them to mechanical shock, which could damage
the mating surfaces of the core and adversely affect
measurement.
Keep the clamp jaws and core slits free from foreign
objects, which could interfere with clamping action.
For shipping or long-term storage, be certain that the
recording head is in the raised position. Otherwise the
rollers could be deformed and cause uneven printing.

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Notes on Use

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vii

NOTE

Before Use

WARNING

Use only recording paper specified by Hioki. Non-specified
recording paper may result in poor-quality or blank printouts.
Avoid using the printer in hot, humid environments, as this can
greatly reduce printer life.
Accurate measurement may be impossible in the presence of
strong magnetic fields, such as near transformers and high­current conductors, or in the presence of strong electromagnetic
fields such as near radio transmitters.
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 reception of radio and television broadcasts.

Before using the instrument the first time, verify that it
operates normally to ensure that the no damage occurred
during storage or shipping. If you find any damage, contact
your dealer or Hioki representative.

Before using the instrument, make sure that the
insulation on the connection cords is undamaged 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
representative for repair.

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Notes on Use

viii

y

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Chapter Summar

This manual consists of the following chapters.
"Introduction", "Safety Notes", "Notes on Use" describe
precautions on use, overview, and features of this unit.
Be sure to read them all. Next, check Chapter 1 to 5 and
the unit to confirm your understanding of the function.

Chapter 1 Product Overview

Outlines the product and explains the names and functions

of its parts.

Chapter 2 Measurement Procedures

Explains procedures for measurement using the product.

Chapter 3 Changing the Recording Paper

Explains how to replace the recording paper.

Chapter 4 Specifications

Sets forth specifications of the product.

Chapter 5 Maintenance and Service

Provides information maintenance and service information

for the product.

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Chapter Summary

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1

Chapter 1

Product Overview

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Product Overview

2

_____________________________________________________________________

1.1 Product Overview

The multi-functional recording Model 8205-10 MICRO

HiCORDER is almost as easy to use as a simple DMM.

A broad range of applications, from small-signal electronic

circuitry to commercial power circuits, are supported by

wide AC and DC voltage measurement ranges covering 0.1

to 500 volts, a graduated analog-style amplitude display and

current measurement functions when used with an optional

clamp-on sensor.

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Product Overview

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3

1.2 Features

(1) Easy operation

The large single-function controls allow operation without
requiring repeated reference to the manual.

(2) Graduated analog-style amplitude display

The high-resolution graduated display and data display
matching the selected range allow input signal levels to be
viewed like an analog meter.

(3) Recording paper printout

Setup conditions for recorded data and elapsed time are
printed out with recorded measurements, eliminating the
need for complex multiple printouts for record storage and
reporting.

(4) Wide measurement ranges

The 0.1 to 500-V AC and DC ranges support a wide variety
of applications, and optional clamp-on sensors are available
to measure current.

(5) True rms display

The true effective-value conversion circuitry provides
accurate measurements, even of distorted waveforms.

(6) Dual power supply system

Power can be supplied from either the AC mains or a 12-V
DC source. AC mains supply voltages between 100 to 240
V AC are automatically selected.

(7) Handy carrying case

The supplied carrying case i ncludes storage for the power
cord and recording paper.

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Product Overview

4

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1.3 Front Panel

Printer Cover

LCD (display)

PAPER FEED
Button

POSITION Control

ADJ Button

Indicator

CHART Button

A (CLAMP)
Selector

Clamp Terminals

POWER SOURCE Switch

AC Connector

SPEED Selector

FUNCTION Switch

RANGE Selector

Test Voltage Input
Terminals

POWER Switch

GND Terminal

DC Terminals (DC Power Source)

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Product Overview

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5

LCD (display) Displays the signal level and device status, including

selected mode and range, numeric scale values, and
indicators. States such as print head up, out of paper
and low supply voltage are also displayed.

PAPER FEED Button Manually advances the recording paper

Pressing this button momentarily advances the paper
about 30 mm. Holding this button advances the paper

continuously.
ADJ Button Adjusts the zero-reference point for measurements
Indicator This indicator lights when the

START state, and blinks when the print head is up

and at paper end (in the START state).
CHART Button Starts and stops recording
A (CLAMP) Selector Selects input sensitivity to match a connected clamp-

on sensor (when used), and applies that sensitivity

internally so that the range setting prints appropriately

on the recording paper
Clamp Terminals Connect a clamp-on sensor to these terminals to

measure current
Test Voltage Input

Terminals
RANGE Selector Selects the measurement signal type and amplitude

FUNCTION Switch Selects AC or DC measurement
SPEED Selector Sets the transport speed of the recording paper
POSITION Control Sets the relative display position of the numeric scale

Printer Cover Covers the printer mechanism and recording paper

POWER SOURCE
Switch

AC Connector Connect the AC cord here to operate the recorder

DC Terminals (DC
Power Source)

GND Terminal This is a signal reference ground to establish a

POWER Switch Turns the recorder on an off

Apply the test voltage across these terminals for

measurement

range. Daisabled for A ranges.

marks for measuring input signals, and the DC offset (for

DC measurements). Daisabled for A and A CV ranges.

storage

Selects whether the recorder is to be powered from

AC mains, or DC

from commercial power (100 to 240 V AC)

Connect a 12-V (nominal) DC supply to these

terminals to operate the recorder from DC power

reference for eliminating stray effects such as noise

from measurements

CHART

button is in the

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Product Overview

6

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1.4 LCD (Display)

Positive

Over-range Indicator

Print Head Up Indicator

Pointer

Under-range Indicator

Negative

Over-range Indicator This arrow l ights when the input signal exceeds the

upper limit of the selected range (the highest level
segment lights at the same time).

Pointer The input signal level is indicated by the lit segment

(pointer) in the graduated bar-type scale

Under-range Indicator This arrow lights when the input is below the lower

limit of the selected range (the lowest level segment
lights at the same time).

Low (DC) Supply
Voltage Indicator

Numeric Display These numeric values are the amplitude values of the

Lights when the DC supply voltage is low.

gradations on the meter scale, according to the
selected range (six 3-digit, 7-segment numerals plus
decimal point)

Scale

Paper End Indicator

Numeric Display

Low (DC) Supply Voltage
Indicator

Paper End Indicator Lights when no recording paper is present.
Scale This graduated scale contains the pointer (lit

segment) that indicates the input signal level.

Print Head Up
Indicator

Lights when the print head is raised.

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Product Overview

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T

1.5 Printout Information

Example of DC-5 V range case

7

Setup Range Data 1

Model

rademark

Printing W aveform

Setup Range Data 2Interval Printing

Recording
Waveform

Scale

Setup Range Data 1 The print setup signal type, numeric value of the

range and display units are printed once when the

CHART

Model Prints when the
Trademark Prints when the
Scale Prints when the
Elapsed Time Display Prints at 5-division intervals
Setup Range Data 2 Prints at 10-division intervals, and when the range

setting or position control is changed.
Interval Printing

(numeric amplitude)

Printing Waveform

ADJ Data

The input signal amplitude is printed numerically at

specific intervals. If the measurable range is widely

over range, the following indications will appear.

DC mode

OVER(+): Indicates the amplitude is over range (positive side).

OVER(-): Indicates the amplitude is over range (negative side).

AC, Current mode

OVER(+): Indicates the amplitude is over range.

Prints when the average mode is selected.

Unaverage mode: DC, Average mode:

See Section 2.7, Item 9 regarding ADJ button

button is pushed (ON).

Elapsed Time Display

CHART
CHART
CHART

button is pushed (ON)
button is pushed (ON)
button is pushed (ON)

DC

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Product Overview

8

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NOTE

When the printing speed is set to 20 cm/min (maximum), the
recording waveform prints lightly.

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Product Overview

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9

Chapter 2

Measurement Procedures

2.1 Preparations

To avoid electric accidents and to maintain the safety

WARNING

specifications of this instrument, connect the power
cord provided only to a 3-contact (two-conductor +
ground) outlet.

To avoid electrical accidents, turn the power switch
off and unplug the power cords from the outlet after
use.

(1) Check the paper

Check the installation condition and amount of paper
remaining before starting a measurement. Refer to Chapter
3 for the paper installation procedure, if necessary.

(2) Connect the power

This product can be operated from either AC mains or 1 2
V DC.

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Measurement Procedures

10

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AC Operation

Set the POWER SOURCE switch to

1.

the

(AC) position.

2. Connect the supplied power cord to the

socket on the recorder.

3. Plug in the power cord. Insert the plug

directly into the outlet.

NOTE

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Measurement Procedures

Although the product can operate from 100 to 240 V AC, the
power cord should be selected to conform to the requirements of
the mains voltage used.
To avoid electrical accidents, unplug the power cord from the
outlet after use, and turn the power switch off.

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11

DC Operation

Positive

Negative

1. Set the

the

POWER SOURCE

(DC) position.

switch to

2. Connect the GND terminal to earth

ground.

3. Connect a source of 9.5 to 14-V DC to

the terminals.

From 9.5 to 14-V DCpower source

NOTE

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A proper ground connection is important for safety and to
ensure stable operation.
The power wiring should be of sufficient current capability to
handle the power consumption (30 VA maximum) of the
product, with a margin for safety.

Measurement Procedures

12

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NOTE

We recommend the following wiring for power connections.

PVC-insulated ring-type crimp-on terminals
(3.2-mm ID, less than 6-mm OD)

Vinyl-insulated wire, at least 1.25 mm2(#14 AWG)

(3) Powering on

Slide the POWER switch to the on

1.

position (

The LCD should light. Confirm that no

2.

).

error indicators appear.

(4) Make the appropriate settings for the intended type of

measurement:

To measure DC voltage, see Section 2.2, DC Voltage

Measurement.

To measure AC voltage, see Section 2.3, AC Voltage

Measurement.

To measure AC current, see Section 2.4, AC Current

Measurement 1.

To measure AC current (using the 9667 FLEXIBLE

CLAMP ON SENSOR), see Section 2.5, AC Current
Measurement 2.

To measure AC current (using a voltage output clamp-on

probe), see Section 2.6, AC Current Measurement 3.

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Measurement Procedures

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R

W

2.2 DC Voltage Measurement

To avoid electric shock, short circuits and damage to

13

DANGE

the instrument, observe the following precautions:

The maximum input voltage is 500 V DC/500 VrmsAC.

Attempting to measure voltage in excess of the

maximum input voltage could destroy the instrument

and result in personal injure or death.

The maximum rated voltage between input terminals

and ground is 500 V DC/500 VrmsAC. Attempting to

measure voltages exceeding 500 V with respect to

ground could damage the instrument and result in

personal injury.

When connecting clip-type connection cords to live

terminals, be very careful to avoid accidentally

shorting conductors together and causing a serious

accident.

Connection cords should be made only at the

secondary side of a breaker, so the breaker can

prevent an accident if a short circuit occurs.

Connections should never be made to the primary

side of a breaker, because unrestricted current flow

could cause a serious accident if a short circuit

occurs.

If the input signal level is unknown, begin measuring

with the highest range to determine the approximate

signal level, then select the appropriate range for

actual measurement.

Disconnect the connection cords from the

measurement object before switching ranges.

To avoid electrical shock, be careful to avoid shorting

ARNING

CAUTION

live lines with the connection cords.

For safety reasons, use only the supplied connection cords
to connect the instrument input terminals to the circuit to
be tested.

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Measurement Procedures

14

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Example 1

Measuring the continuous operation of a device.
Battery used for test: 6F22 (9V)
Estimated recording period: 90 hours
Measure continuously until the battery replacement warning
is displayed.

The supplied connection cords

1.

connect to the Test voltage input
terminals.

2. Set the

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Measurement Procedures

FUNCTION

switch toDC.

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15

3. Set the Range selector to

10 V

,

corresponding to the input signal level.

Adjust the POSITION control to display

4.

0 to 10V (see Section 2.7, Item 3
regarding POSITION control
adjustment).

5. Set the

SPEED

selector to

2 cm/hour

(according to particular application).

6. Press the

ADJ

button to reset the zero
position. (see Section 2.7, Item 9
regarding ADJ button).

7. Connect the connection cords in

parallel with the device under test.

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Measurement Procedures

16

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8. Press the

CHART

button to begin

measuring.

9. Recording proceeds for the estimated

test period (until the battery
replacement warning is displayed).

10.Press the

CHART

button again to stop

recording.

11.Disconnect the connection cords from the circuit under

test.

Press the PAPER FEED button to feed out the recording

12.

paper, and cut it off.

Turn the POWER switch off ( ).

13.

14.Inspect the results. In this example, the elapsed time

until the battery voltage decreases to the warning level
can be read from the printout and the scale.

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Measurement Procedures

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R

W

2.3 AC Voltage Measurement

To avoid electric shock, short circuits and damage to

17

DANGE

the instrument, observe the following precautions:

The maximum input voltage is 500 V DC/500 VrmsAC.
Attempting to measure voltage in excess of the
maximum input voltage could destroy the instrument
and result in personal injure or death.
The maximum rated voltage between input terminals
and ground is 500 V DC/500 VrmsAC. Attempting to
measure voltages exceeding 500 V with respect to
ground could damage the instrument and result in
personal injury.
When connecting clip-type connection cords to live
terminals, be very careful to avoid accidentally
shorting conductors together and causing a serious
accident.
Connection cords should be made only at the
secondary side of a breaker, so the breaker can
prevent an accident if a short circuit occurs.
Connections should never be made to the primary
side of a breaker, because unrestricted current flow
could cause a serious accident if a short circuit
occurs.
If the input signal level is unknown, begin measuring
with the highest range to determine the approximate
signal level, then select the appropriate range for
actual measurement.
Disconnect the connection cords from the
measurement object before switching ranges.
To avoid electric shock and short-circuit accidents,
use only the supplied connection cords to connect
the instrument input terminals to the circuit to be
tested.

To avoid electrical shock, be careful to avoid shorting

ARNING

live lines with the connection cords.

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Measurement Procedures

18

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Example 2

Recording voltage changes at a breaker.
Estimated test voltage: 200 V AC
Recording period: 2 4 hours

The supplied connection cords

1.

connect to the Test voltage input
terminals.

2. Set the

3. Set the Range selector to

FUNCTION

switch toAC.

200 V

,

corresponding to the input signal level.

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Measurement Procedures

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19

4. Set the

SPEED

selector to

10 cm/hour

(according to particular application).

5. Press the

ADJ

button to reset the zero
position. (see Section 2.7, Item 9
regarding ADJ button).

Connect the connection cords in

6.

parallel with the device under test.

Press the CHART button to begin

7.

measuring.

Record for 24 hours.

8.

9. Press the

CHART

button again to stop

recording.

10.Disconnect the connection cords from the circuit under

test.

11.Press the

PAPER FEED

button to feed out the recording

paper, and cut it off.

12.Turn the

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POWER

switch off ( ).

Measurement Procedures

20

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13.Inspect the results. In this example, the voltage changes

at the breaker over 24 hours can be read from the
printout and the scale.

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Measurement Procedures

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R

2.4 AC Current Measurement 1

To avoid electric shock, short circuits and damage to

21

DANGE

the instrument, observe the following precautions:

Clamp-on sensor should be made only at the
secondary side of a breaker, so the breaker can
prevent an accident if a short circuit occurs.
Connections should never be made to the primary
side of a breaker, because unrestricted current flow
could cause a serious accident if a short circuit
occurs.
To avoid short circuits and potentially life-threatening
hazards, never attach the clamp to a circuit that
operates at more than the maximum rated voltage or
over bare conductors.
If the input signal level is unknown, begin measuring
with the highest range to determine the approximate
signal level, then select the appropriate range for
actual measurement.
Disconnect the clamp-on sensor from the
measurement object before switching ranges.

CAUTION

Note that the clamp-on sensor may be damaged if
current exceeding the selected measurement range is
applied for a long time.
To prevent damage to the clamp-on sensor, never
connect or disconnect a sensor while the power is on.

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Measurement Procedures

22

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Example 3

Recording current flow through a breaker.
Estimated test current: 30 A
Recording period: 10 minutes

1. Connect the optional clamp-on

sensor to the Clamp terminals.

2. Set the Range selector to the

3. Set the

A

(CLAMP) selector to

A

position.

50 A

sensitivity.

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Measurement Procedures

_____________________________________________________________________

Set the SPEED selector to 6cm/min

4.

23

(according to particular application).

NOTE

5. Press the

ADJ

button to reset the zero
position. (see Section 2.7, Item 9
regarding ADJ button).

Clip the clamp on sensor.

6.

OK

Attach the clamp around only one conductor. Single-phase (2­wire) or three-phase (3-wire) cables clamped together will not
produce any reading.
Position the conductor so that it is as nearly centered in the
clamp core as possible.
Non-sinusoidal waveforms such as the secondary side of
inverters may not be measurable.
Depending on the size and frequency of the measured current,
the core of the clamp may hum as a result of resonance. This
does not affect measurement performance.
Do not attempt to measure current levels that are likely to
exceed the specified maximum rating of the clamp-on sensor.

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Measurement Procedures

24

_____________________________________________________________________

Press the CHART button to begin

7.

measuring.

8. Record for 10 minutes.

9. Press the

CHART

button again to stop

recording.

10.Remove the clamp from the conductor being measured.

11.Press the

paper, and cut it off.

12.Turn the

Inspect the results. In this example, the current flow

13.

through the breaker over ten minutes can be read from
the printout and the scale.

PAPER FEED

POWER

switch off ( ).

button to feed out the recording

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Measurement Procedures

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R

2.5 AC Current Measurement 2

Use the optional 9667 FLEXIBLE CLAMP ON SENSOR.

To avoid electric shock, short circuits and damage to

25

DANGE

the instrument, observe the following precautions:

The clamp-on sensor should be made only at the
secondary side of a breaker, so the breaker can
prevent an accident if a short circuit occurs.
Connections should never be made to the primary
side of a breaker, because unrestricted current flow
could cause a serious accident if a short circuit
occurs.
To avoid short circuits and potentially life-threatening
hazards, never attach the clamp-on sensor to a
circuit that operates at more than the maximum rated
voltage or over bare conductors.
If the input signal level is unknown, begin measuring
with the highest range to determine the approximate
signal level, then select the appropriate range for
actual measurement.
Disconnect the clamp-on sensor from the
measurement object before switching ranges.

CAUTION

Note that the clamp-on sensor may be damaged if
current exceeding the selected measurement range is
applied for a long time.
When disconnecting the BNC connector, be sure to
release the lock before pulling off the connector. Forcibly
pulling the connector without releasing the lock, or pulling
on the cable, can damage the connector.
To prevent damage to the clamp-on sensor, never
connect or disconnect a sensor while the power is on.

NOTE

When using the 9667 to measure current, results must be scaled
according to the range of the 9667. For details, see step
A separate conversion adapter is also necessary.

______________________________________________________________

Measurement Procedures

16

.

26

_____________________________________________________________________

Example 4

Recording current with the 9667 FLEXIBLE CLAMP ON
SENSOR.
Estimated test current: 250 0 A
Recording period: 10 minutes

BNC connector
of the 9667

1. Connect the BNC connector* of the

9667 to the conversion adapter.

*Contact your dealer or Hioki

Conversion
adapter

Connector guide

representative.

BNC connector grooves

Lock

②

①

Engage the BNC connector grooves with the connector­guide projections, and turn the connector clockwise to lock
the components. (To remove the BNC connector: Turn the
connector counterclockwise and pull it out.)

______________________________________________________________

Measurement Procedures

_____________________________________________________________________

27

2. Connect the conversion adapter to

the test voltage input terminals.
When measuring high voltage and

Insert one side here.

high frequency signals, see 2.5.1
"When Measuring High Voltage and
High Frequency Signals."

3. Set the

4. Set the Range selector to

FUNCTION

switch toAC.

0.5 V

,

corresponding to the input signal level.

5. Set the

SPEED

selector to

6cm/min

(according to particular application).

6. Confirm that the 9667 is not clamped

on a power line, and that the contacts
of the 9667 are locked in place.

7. Turn on the 9667, and set the

button of the 9667 to appropriate range
for actual measurement.

RANGE

______________________________________________________________

Measurement Procedures

28

_____________________________________________________________________

Press the ADJ button to reset the zero

8.

position. (see Section 2.7, Item 9
regarding ADJ button).

9. Clamp the conductor.

OK

NOTE

Attach the clamp-on sensor around only one conductor. Single­phase (2-wire) or three-phase (3-wire) cables clamped together
will not produce any reading.
Position the conductor so that it is as nearly centered in the
clamp core as possible.
Non-sinusoidal waveforms such as the secondary side of
inverters may not be measurable.
Do not attempt to measure current levels that are likely to
exceed the specified maximum rating of the clamp-on sensor.
Measurement results may vary slightly when ambient
temperature fluctuates greatly. (Thermal drift)

10.Press the

CHART

button to begin

measuring.

11.Record for 10 minutes.

12.Press the

stop recording.

CHART

button again to

13.Turn off the 9667, and remove from

the conductor being measured.

______________________________________________________________

Measurement Procedures

_____________________________________________________________________

29

14.Press the

PAPER FEED

button to feed out the recording

paper, and cut it off.

15.Turn the

Inspect the results. In this example, the current flow

16.

POWER

switch off ( ).

through the breaker over ten minutes can be read from
the printout and the scale.

To read values, scale results using the following table
according to the range of the 9667.

Range of the 9667 Scaling value

500 A 1A/mV

5000 A 10 A/mV

Example

Range: 5000 A, reading value: 250 mV

Reading value X Scaling value＝Measurement value

250 [mV] X 10 [A/mV]

＝

2500 [A]

______________________________________________________________

Measurement Procedures

30

l

_____________________________________________________________________

2.5.1 When Measuring High Voltage and High
Frequency Signals

When measuring high voltage and high frequency signals
using the 966 7, the leak current increases due to the stray
capacitance inside the unit. To measure high voltage and
high frequency signals, use the following procedure.

Prepare a lead wire that is fitted with a banana plug.

Approximately
20 cm

Ring-type crimp-on termina

3.2-mm ID
6-mm OD

Connect the round pressure terminal on the lead wire to the
unit's GND terminal.

Insert in the minus (-) side.

Insert the banana plug into the conversion adapter.

______________________________________________________________

Measurement Procedures

_____________________________________________________________________

R

2.6 AC Current Measurement 3

Measure current by using a voltage output clamp-on probe
(9010, 9010-02, 9018, or 9018-01) that is not one of the
dedicated optional sensors.

To avoid electric shock, short circuits and damage to

31

DANGE

the instrument, observe the following precautions:

Clamp-on probe should be made only at the
secondary side of a breaker, so the breaker can
prevent an accident if a short circuit occurs.
Connections should never be made to the primary
side of a breaker, because unrestricted current flow
could cause a serious accident if a short circuit
occurs.
To avoid short circuits and potentially life-threatening
hazards, never attach the clamp to a circuit that
operates at more than the maximum rated voltage or
over bare conductors.
If the input signal level is unknown, begin measuring
with the highest range to determine the approximate
signal level, then select the appropriate range for
actual measurement.
Disconnect the clamp-on probe from the
measurement object before switching ranges.

CAUTION

Note that the clamp-on probe may be damaged if current
exceeding the selected measurement range is applied
for a long time.
To prevent damage to the clamp-on probe, never
connect or disconnect a sensor while the power is on.

NOTE

Make the sensitivity setting in the clamp-on probe.
Because the data that is printed on the recording paper is for

0.2V AC, scaling is necessary.

______________________________________________________________

Measurement Procedures

32

_____________________________________________________________________

The clamp-on probe connect

Set the Range selector to

0.2 V

to the Test voltage input terminals.

.

Set the

FUNCTION

switch toAC.

Scaling method

The measurement value is calculated according to the

following formula.
Reading value X Scaling value＝Measurement value

The following table lists the scaling values for each clamp-

on probe.

Range of the clamp-on probe Scaling value

10 A 0.05 A/mV
20 A 0.1 A/mV

50 A 0.25 A/mV
100 A 0.5 A/mV
200 A 1A/mV
500 A 2.5 A/mV

______________________________________________________________

Measurement Procedures

_____________________________________________________________________

33

2.7 Common Measurement Operations

(1) Starting and ending recording

Pressing the

CHART

pressing it again (to return it to the undepressed STOP
position) ends recording.

button down starts recording, and

NOTE

The PAPER FEED button and ADJ button are disabled while
the CHART button is depressed (ON).
Changing the range during recording, the new scale is printed.

(2) Paper transport speed

NOTE

Use the

Settings can be changed during recording, but the setting
information cannot be printed. Check the elapsed time printed
on the paper.

SPEED selector to set the paper transport speed.

(3) POSITION control

When measuring DC voltage, the displayed zero position
can be offset by up to 20% of the maximum range limit.
This feature is useful when the input signal contains both
polarities.

Display Example of 10-V DC Range Case

Normal State

Centered POSITION State

Maximum Offset State

______________________________________________________________

Measurement Procedures

34

_____________________________________________________________________

(4) PAPER FEED button

Use this button for manual paper recording.
Pressing this button momentarily advances the paper about
30 mm. Holding this button advances the paper
continuously.

NOTE

The button is disabled during automatic recording.

(5) FUNCTION switch

Set to DC or AC to measure direct or alternating current,
respectively.

(6) Range selector

Set according to the expected maximum amplitude of the
measured signal.

(7) AC current measurement

To measure AC current using an optional clamp-on sensor,

connect the clamp-on sensor to the clamp terminals and set
the range selector to A. Also, set the A (CLAMP) selector
to match the input sensitivity of the clamp with the
expected maximum current to be measured.

NOTE

The FUNCTION switch setting is ignored when measuring with
the clamp-on sensor.
For details on how to use the 9667 FLEXIBLE CLAMP ON
SENSOR to measure AC current, refer to section 2.5, "AC
Current Measurement 2. "

(8) Printing waveforms

Either average or peak values can be selected for waveform
printing. The selection is made when turning the power on
(when the power is off, the standard condition is selected).

Unaveraged mode (standard setting)

The printed waveform consists of the minima and maxima

points of the data sampled between printing intervals. This
mode is useful for recording rapid changes in input signals,
such as instantaneous electrical faults.

______________________________________________________________

Measurement Procedures

_____________________________________________________________________

Average mode

The printed waveform consists of the average of the data

35

points between printing intervals.
The printing waveform mode is displayed as AC

＿

or DC＿.

The following shows the relation between the paper
transport speeds and intervals.

Papertransport speed Intervals

20 cm/min 37.5 ms

6 cm/min 125 ms
60 cm/hour 750 ms
10 cm/hour 4.5 s

2 cm/hour 22.5 s

Average mode

NOTE

Standard Condition

Hold the
while turning the

PAPER FEED

POWER

Continuing to hold the switch causes the paper to feed.

button

switch on.

______________________________________________________________

Measurement Procedures

36

_____________________________________________________________________

(9) ADJ button

Press this button to adjust the fine offset of the zero
position during measurement. While shorting the connection
cords together, press this button to reset the zero position.
After adjusting the zero position, the "0" in the numeric
display of the LCD changes to "0.0", the "0" in the range
setting information for the recording paper changes to
"0.0", and "_" appears under the unit display.

Before adjusting

NOTE

______________________________________________________________

Measurement Procedures

This button is intended only for fine adjustment of the zero
position. It cannot compensate for a large offset.
The range for zero position adjustment is
measurement)/ 2%f.s.(Current measurement).
The zero adjustment is lost when power is turned off or range
selector setting is changed, so reset the zero position again if
necessary when power is turned on.
The button is disabled during automatic recording.
After verifying that input is 0, press the ADJ button. To ensure
zero input, either short the tips of the connection cords or short
the test voltage input terminals. Measurement error will be larger
in any input is present when the ADJ button is pressed.
For accurate measurements, press the ADJ button only when the
conductor is not clamped a nd the core junction is closed (when
the input value is 0).
After changing the range, press the ADJ button to reset the zero
position

After adjusting

25%f.s.(Voltage

_____________________________________________________________________

37

Chapter 3

Changing the Recording Paper

3.1 Opening and Closing the Printer Cover

CAUTION

Avoid forcing the printer cover, as the hinge could break.

Opening the Printer Cover

Hook your fingertip under the projecting part

1.

of the printer cover, and pull it up slightly to
disengage the catch.

2. Open the cover when the catch is disengaged.

Closing the Printer Cover

1. Confirm that some paper is sticking out

before closing the printer cover.

2. Align the hook in the cover with the catch on

the unit, and press the cover lightly until the
catch engages.

______________________________________________________________

Changing the Recording Paper

38

_____________________________________________________________________

3.2 Installing Recording Paper

Head up/down lever

Recording paper

Recording paper

Platen

Roll paper spool

Print head

Guide shaft

Raise the print head. Move the

1.

head up/down lever up to raise
the print head.

2. Insert the spool into the

recording paper roll.

Install the spool and paper roll

3.

into the holder.

Feed the paper over the guide

4.

shaft.

5. Feed the paper over the platen

and out through the printer
frame.

6. Confirm that the paper is

centered on the platen, and move
the lever down to lower the print
head.

NOTE

______________________________________________________________

Changing the Recording Paper

Printing is not possible if the recording paper is loaded wrong­side up.
The paper may jam if it is not aligned with the roller.

_____________________________________________________________________

Chapter 4

Specifications

4.1 General Specifications

Recording system Thermal recording paper
Input channels 2 (simultaneous recording not supported)
Sampling period 10 ms
Valid recording width Waveform recording width: 60 mm
Paper transport speeds 2, 10 or 60 cm/hour, and 6 or 20*cm/minute

39

Recording axis
precision

Within 0.5%

Operating
temp./humidity

Storage
temp./humidity

Operating temperature
and humidity for
guaranteed accuracy
Period of guaranteed
accuracy

Guaranteed accuracy
signal frequency

Operating environment Indoors, below 2000 m (6562 feet) altitude
Withstand voltage 4.29 kVrms (50/60 Hz, 1 min)

Power requirements

5to40oC (41 to 104 ), 35 to 80% RH (non­condensating)

-10to50oC (14 to 122 ), 80% RH or less (non­condensating)

23 5oC(73 41 ), 35 to 80% RH (non-condensating)

1 year

45 to 66 Hz (AC range)

between GND and input terminals
AC: 100 to 240 V, 50/60 Hz, 30 VA

DC: 9.5 to 14 V, 30 VA
(Voltage fluctions of 10% from the rated supply
voltage are taken into account. )

*: When the printing speed is set to 20 cm/min (maximum), the

recording waveform prints lightly.

______________________________________________________________

Specifications

40

_____________________________________________________________________

External dimensions
and mass

Accessories 9344 CARRYING CASE 1

Options 9235 RECORDING PAPER (15 m, 10 rolls) 1

Applicable Safety:
Standards

EMC:

Approx. 250W 122H 93.5D mm
(9.84"W
Approx. 1200 g (42.3 oz.)

L9257 CONNECTION CORD 1
9235 RECORDING PAPER (15 m) 1
Roll Paper Spools 2
AC Power Cord 1
Instruction Manual 1

9236-01 RECORDING PAPER
9650 CLAMP ON SENSOR 1

9651 CLAMP ON SENSOR 1
9667 FLEXIBLE CLAMP ON SENSOR 1
9668 CLAMP ON SENSOR 1

EN61010
Pollution Degree 2, Measurement category III
(6000 V expected transient Overvoltage)
EN61326 Class A
EN61000-3-2
EN61000-3-3

4.8"H 3.68"D)

(15 m, Climate-resistant; 10 rolls) 1

______________________________________________________________

Specifications

_____________________________________________________________________

4.2 Voltage Measurement Input
Specifications

41

Measurement ranges
(max. ratings)

Maximum input voltage 500 Vrms

Maximum rated voltage
between input terminals
and ground

Input Impedance 1MΩ 5% (10-V range and below)

Accuracy Within 2% of fixed value
Rectification system Effective value rectification
Common mode rejection

ratio
Frequency characteristics Within +3, -3 dB for the range between 20 Hz to

Effect of electromagnetic
interference

Effect of conducted radio­frequency disturbances

0 to 0.1, 0.2, 0.5, 1, 2, 5, 10, 20, 50, 100, 200,
500 V AC/DC

Display range is 0 to +110% of rated value (AC)
500 Vrms

1.18 MΩ

Better than 50 dB (50/60 Hz, less than 100Ω
unbalance)

30 kHz, using 50/60 Hz as the standard reference
point.

Within 20%f.s. at 3 V/m

Within 8%f.s. at 3 V

5% (20-V range and above)

When using the 9667, the full-scale accuracy of the ranges
of the product is as follows.

Range

Model

9667 3.5% 2.75% 2.3%

0.1 V 0.2 V 0.5 V

Overall accuracy is the cumulative accuracy of the recorder
and the probe, as indicated in the following examples.

(Examples)

For the 0.5-V range, combining the accuracy of the recorder
and the 9667 yields an overall accuracy of
for the 0.2-V range,

______________________________________________________________

4.75% f.s.

4.3% f.s., and

Specifications

42

_____________________________________________________________________

4.3 Current Measurement Input
Specifications

Measurement ranges
(max. ratings)

Input sensitivity 10, 20, 50, 100, 200, 500, 1000 mA f.s.

Input impedance 1 Ω 10%
Accuracy Within 2% of max. rating

Rectification system Effective value rectification
Frequency characteristics Within +3, -3 dB for the range between 20 Hz to 20

Range information Sensitivity and display range are determined by the

Effect of electromagnetic
interference

Effect of conducted radio­frequency disturbances

10, 20, 50, 100, 200, 500, 1000 AAC (depending on
clamp-on sensor used). Maximum display range is
110% of measurement range.

(f.s. = max. rating)

(10, 20, 50, 100, 200, 500 A range)
Within 3% of max. rating (1000 A range)

kHz, using 50/60 Hz as the standard reference point
(independent of clamp-on sensor characteristics).

Clamp Range input selector setting.
Within +5, -0.5%f.s. at 3 V/m

Within 8%f.s. at 3 V

The full-scale accuracy of the ranges of each clamp-on sensor is as
follows.

Range

Model

9650 1.8% 1.65% 1.56% 1.53%
9651 3.0% 2.25% 1.8% 1.65% 1.58% 1.53%
9668 6.0% 4.5% 3.6% 3.3% 3.15% 3.06% 3.03%

10 A 20 A 50 A 100 A 200 A 500 A 1000 A

Overall accuracy is the cumulative accuracy of the recorder and the
probe, as indicated in the following examples.

______________________________________________________________

Specifications

_____________________________________________________________________

43

(Examples)

1. For the 100-A range, combining the accuracy of the recorder and the
9650 yields an overall accuracy of
range,

3.56% f.s.

3.53% f.s., and for the 50-A

2. For the 500-A range, combining the accuracy of the recorder and the
9651 yields an overall accuracy of
range,

3.65% f.s.

3.53% f.s., and for the 100-A

3. For the 1000-A range, combining the accuracy of the recorder and the
9668 yields an overall accuracy of
range,

5.3% f.s.

6.03% f.s., and for the 100-A

NOTE

When using the 9668 CLAMP ON SENSOR in conjunction with
the 8205-10 to measure current, we do not recommend taking
measurements at high sensitivities. We do rec ommend using a
clamp that is suited to the current to be measured.

4.4 Display Specifications

Display
method

Display
contents

Signal level and setting data displayed by LCD bar

Signal input level (AC):
Zero to 110% of selected range rating,
Minimum resolution = 2% of range rating
Signal input level (DC):

-10 to +110%, -30 to +90%, -50 to +70%, -70 to +50%,

-90 to +30%
(POSITION control selects the display range)
Minimum resolution = 2% of range rating
Low Supply Voltage (when operating on DC)
Print Head Up
Paper End
Type of Signal Measurement
Measured signal units and subunits

______________________________________________________________

Specifications

44

_____________________________________________________________________

4.5 Recorded Information

Waveform data Voltage or current amplitude. Waveform data may be

either average or unaveraged values (set at power on)

Settings Range, mode, etc. print at start and stop, and at each 10 DIV

(format differs when printed at intervals)

Elapsed time Elapsed time from starting to record are printed at each 5

DIV

Interval printing Measured values print along grid at each 2 DIV

The average values of the waveform data are printed on
the grid of printing point.

Printing when
setting change

Changes in various settings during recording are printed
after the changes are made

4.6 Recording Time

The following table shows the recording capacity of one
roll of recording paper.

Papertransport speed Recording time

2 cm/hour 31.25 days
10 cm/hour 6.25 days
60 cm/hour 25 hours

6 cm/min 250 minutes

20 cm/min 75 minutes

______________________________________________________________

Specifications

_____________________________________________________________________

45

Chapter 5

Maintenance and Service

5.1 Storage Precautions

(1) Recorder

Avoid storing the product in conditions of high temperature
and humidity, as damage may result from condensation and
corrosion.
During long-term storage and during transportation, the
print head should be in the raised position. Leaving the
print head in the lowered position for an extended period
can dent the platen (rubber roller) that transports the paper,
resulting in uneven printing.

(2) Storing recording paper

o

Store rolls of thermal paper at no more than 40
The paper will change color if exposed to light over a long
period, so do not unwrap a roll of paper until you are ready
to use it.

______________________________________________________________

Maintenance and Service

C.

46

_____________________________________________________________________

(3) Storing data recordings

As the recording paper is thermally sensitive, be aware of

the following points:

To avoid paper discoloration, do not expose it to direct

o

sunlight, and store at no more than 40

C and 90% RH.

For permanent storage of important recorded data,

photocopy the recording paper.

If the thermal paper is exposed to an organic solvent such

as alcohol or ketone, it may no longer develop properly,
and recorded data may fade.
Also, the thermal recording paper is ruined by contact with

wet Daizo copy paper.

5.2 Cleaning

To clean the instrument, wipe it gently with a soft cloth

moistened with water or mild detergent. Never use solvents
such as benzene, alcohol, acetone, ether, ketones, thinners
or gasoline, as they can deform and discolor the case.

______________________________________________________________

Maintenance and Service

_____________________________________________________________________

47

5.3 Cleaning the Printer Head

To maintain print quality, use the following method to
clean the print head whenever recording paper is replaced.

Method 1

ADJ

NOTE

1. Turn on the printer's power while holding down the

button.

2. Print solid black for about 50 cm, and the printer should

turn on as usual. (Press the PAPER FEED button to stop
at any time.)

Print solid black several times to confirm whether

3.

printing has improved. If it does not improve, perform
Method 2.

Method 2

1. Apply a solvent such as a non-water alcohol or normal

hexane, to the recording paper and insert it into the
printer. The recording paper may change color depending
on the solvent you use, so use the reverse side.

2. Move the head up/down lever to the down position.

3. Move the recording paper back and forth with your hand

to clean the head.

Do not use organic solvents such as thinner or benzene, which
could discolor or deform the printer.
After applying a solvent, be certain that the printer is completely
dry before use to avoid discoloring or deforming the printer.
After prolonged use, white paper dust may build up on the
surface of the paper roller. Small amounts of paper d u st will not
affect printer operation. However, you may remove it using a
blower brush, such as those used for cameras.
Cut the recording paper with the cutter attached to the printer's
cover. If you cut the recording paper against the side of the
printer head, large amounts of paper dust will stick to the paper
rolle.

______________________________________________________________

Maintenance and Service

48

_____________________________________________________________________

5.4 Service

If damage is suspected, check the "Troubleshooting" section

before contacting your dealer or Hioki representative. Pack
the instrument carefully so that it will not be damaged
during shipment, and include a detailed written description
of the problem. Hioki cannot be responsible for damage
that occurs during shipment.

Troubleshooting

Symptom Cause Remedy

Does not turn on POWER SOURCE switch

may be set incorrectly
Power cord may be broken Check and replace cord.

Does not print Paper may be installed

upside down

Set to match power source.

Reinstall the paper

Measured values
unstable

Input signals do not
display

Ground not connected Connect the GND terminal

to earth ground

A connection cord may be
open

Check and replace
connection cord

______________________________________________________________

Maintenance and Service