Hioki 3640-20 Instruction Manual

INSTRUCTION MANUAL

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3640-20

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LUX LOGGER

Contents

Introduction i
Inspection ii
Safety Notes iii
Notes on Use v
Measurement Flow Chart and Reference Guide vi

Chapter 1 Product Overview 1

1.1 Name and Functions of Parts 2

1.2 Interval and Maximum Recording Time

Chapter 2 Set Up 5

2.1 Replacing the Battery 5

2.2 Power Save Function

2.3 Setting Current Time

2.4 Connecting 9662 LUX SENSOR

Chapter 3 Settings 11

3.1 Setting Items 11

3.2 Manual Setting

3.3 Setting by COMMUNICATION BASE

14

16

3

7

8

9

Chapter 4 Specifications 19

Chapter 5 Reference 21

5.1 Recommended Levels of Illumination 21

5.2 Relative Spectral Response Characteristics
in the Visible Spectrum

5.3 Angled Incident Light Characteristics

23

24

Chapter 6 Maintenance and Service 25

_____________________________________________________________________

Introduction

Thank you for purchasing this HIOKI "3640-20 LUX
LOGGER." To get the maximum performance from the
unit, please read this manual first, and keep this at hand.

i

______________________________________________________________

Introduction

ii

_____________________________________________________________________

Inspection

When the unit is delivered, check and make sure that it has
not been damaged in transit. If the unit is damaged, or fails
to operate according to the specifications, contact your
dealer or HIOKI representative.

Accessories

9662 LUX SENSOR
Instruction Manual
LR03 alkaline battery X 4 (built into this unit, for monitor)

Before using the product 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.

NOTE

______________________________________________________________

Inspection

Testing monitor batteries installed in the unit may possibly be
weak. Replace batteries before extended measurement usage.

_____________________________________________________________________

R

iii

SafetyNotes

This equipment is designed according to IEC 61010-1
Safety Standards, and has been tested for safety prior

DANGE

Safety Symbols

to shipment. Incorrect measurement procedures
could result in injury or death, as well as damage to
the equipment. Please read this manual carefully and
be sure that you understand its contents before using
the equipment. The manufacturer disclaims all
responsibility for any accident or injury except that
resulting due to defect in its product.

This Instruction Manual provides information and warnings
essential for operating this equipment in a safe manner and
for maintaining it in safe operating condition. Before using
this equipment, be sure to carefully read the following
safety notes.

This symbol is affixed to locations on the equipment
where the operator should consult corresponding topics
in this manual (which are also marked with the
symbol) before using relevant functions of the
equipment.
In the manual, this mark indicates explanations which it
is particularly important that the user read before using
the equipment.

Indicates DC (Direct Current).

______________________________________________________________

Safety Notes

iv

R

_____________________________________________________________________

The following symbols are used in this Instruction Manual
to indicate the relative importance of cautions and
warnings.

Indicates that incorrect operation presents extreme

DANGE

WARNING

CAUTION

NOTE

danger of accident resulting in death or serious injury
to the user.

Indicates that incorrect operation presents significant
danger of accident resulting in death or serious injury
to the user.

Indicates that incorrect operation presents possibility
of injury to the user or damage to the equipment.

Denotes items of advice related to performance of the
equipment or to its correct operation.

Accuracy

The specifications in this manual include figures for
"measurement accuracy" when referring to digital
measuring instruments, and for "measurement tolerance"
when referring to analog instruments.

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.

rdg.

(displayed or indicated value)
This signifies the value actually being measured, i.e., the
value that is currently indicated or displayed by the
measuring instrument.

dgt.

(resolution)
Signifies the smallest display unit on a digital measuring
instrument, i.e., the value displayed when the last digit on
the digital display is "1".

______________________________________________________________

Safety Notes

_____________________________________________________________________

v

Notes on Use

In order to ensure safe operation and to obtain maximum
performance from the unit, observe the cautions listed
below.

CAUTION

NOTE

Do not store or use the product where it could be exposed
to high temperature or humidity, or condensation. Under
such conditions, the product may be damaged and
insulation may deteriorate so that it no longer meets
specifications.

Attach the supplied light sensor cap to the detector and then
perform zero ajustment before measurement.
Do not store or use the tester where it will be exposed to direct
sunlight, high temperature, high humidity, or condensation. If
exposed to such conditions, the tester may be damaged, the
insulation may deteriorate, and the tester may no longer satisfy
its specifications.
The reference level as marked on the faceplate is the tip of the
light sensor.

______________________________________________________________

Notes on Use

vi

_____________________________________________________________________

Measurement Flow Chart and Reference Guide

Is there sufficient

battery charge remaining

to operate 364

Setting current time

Connecting sensor

Zero ajustment

Setting 3640-20

stand-alone

・Interval
・Range

See 3.2.

0-20?

Set current time when using 3640-20 for the
first time or replacingbatteries. See 2.3.

See 2.4.

See 2.4.

Setting 3640-20

with COMMUNICATION

・Interval
・Current time
・Start control
・Recording method

BASE

Quick start

No

Replace batteries

Setting 3640-20 with

COMMUNICATION BASE

・Interval ・Current time
・Start control ・Range
・Recording method
・Comment

Settingstart control

Start control options

and PC

Yes

Prescheduled start

See 2.1.

Press REC/STOP
button to start
measurement.

See 3.2.

When recording data
reaches 32000
measurement stops.

After measurement is complete, disconnect sensor. Use COMMUNICATION BASE to
send measurement data to personal computer. (See COMMUNICATION BASE
instruction manual.)

Starts measurement
immediately.

One time

recordingmethod

When recording data exceeds 32000, it overwrites
previously recorded data.

Press REC/STOP button to stop measurement.

Starts measurement at
prescheduled time.

Setting

Endless

______________________________________________________________

Measurement Flow Chart and Reference Guide

_____________________________________________________________________

1

Chapter 1

Product Overview

3640-20 LUX LOGGER with 9662 LUX SONSOR records
1 channel of data at illuminance.
Data is saved in nonvolatile memory when batteries are
weak or removed for replacement.

NOTE

3640-20 LUX LOGGER are not able to set up it to 3910-20
COMMUNICATION BASE.
Use 3911-20, 3912-20 COMMUNICATION BASE to set 3640-

20.

______________________________________________________________

2

(

_____________________________________________________________________

1.1 Name and Functions of Parts

LCD

Optical data
transferports

INTERVAL
button

Zero ajustment
button

LCD Displays measurement value and settings.

Optical data
transfer ports

INTERVAL button Calls up interval setting display to set interval.

Zero ajustment
button

REC/STOP button Pressing more than 1 second initiates or stops

(SELECT) button Interval is selected in interval setting display.

Sensor connection
terminal

Range button Changes measurement range from 2000

Enables optical data transfer to
COMMUNICATION BASE.

Performs zero adjustment for the Lux Sensor.

recording.

Connects 9662 LUX SENSOR.

lx/20000 lx/2000000 lx.

REC/STOP button

SELECT)button

Sensor connection
terminal

Range button

______________________________________________________________

1.1 Name and Functions of Parts

_____________________________________________________________________

1.2 Interval and Maximum Recording Time

Interval and maximum recording time (when power save
function is valid) are as follows.
Maximum recordable data is 32000 per unit.

INTVL Maximum Recording Time

1s 8h53min20s

2s 17 h 46 min 40 s

5s 1 day 20 h 26 min 40 s

10 s 3 day 16 h 26 min 40 s

15 s 5 day 13 h 20 min

20 s 7day9h46min40s

30 s 11 day 2 h 40 min

1min 22 day 5 h 20 min

2min 44 day 10 h 40 min

5min 111 day 2 h 20 min

10 min 222 day 5 h 20 min

15 min 333 day 8 h

20 min 444 day 10 h 40 min

30 min 666 day 6 h

60 min 1333 day 8 h

3

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1.2 Interval and Maximum Recording Time

4

_____________________________________________________________________

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1.2 Interval and Maximum Recording Time

_____________________________________________________________________

5

Chapter 2

Set Up

2.1 Replacing the Battery

During battery replacement, use caution not to put any

WARNING

foreign materials such as a metal object into the unit to
avoid damage to the unit.
Before using the product after replacing the batteries,
replace the cover and screw.
Do not mix old and new batteries, or different types of
batteries. Also, be careful to observe battery polarity
during installation. Otherwise, poor performance or
damage from battery leakage could result.
Handle and dispose of batteries in accordance with
local regulations.

CAUTION

When exchanging the batteries, the circuit may sometimes
short circuit due to static electricity. As far as possible, do
not touch the base board with bare hands.

Installing new batteries ensures about 1 year of recording.
(reference value with interval setting set to 1 minute or
more, power save setting set to valid and at 20
Remaining battery power indicator (

)indicates

)

remaining battery life reducing incrementally from right.
Empty battery power indicator (

) indicates time to

replace batteries.

______________________________________________________________

2.1 Replacing the Battery

6

_____________________________________________________________________

1. Remove back cover screw
to remove cover. Verify
polarity and install four
new LR03 alkaline
batteries.

2. Fit cover properly and
tighten screw.

______________________________________________________________

2.1 Replacing the Battery

_____________________________________________________________________

7

2.2 Power Save Function

Display window is automatically turned off in
approximately 15 seconds after last key entry. (Sleep)
However, while recording,
conditions.

Press any button to turn display on to display measurement
value or to set settings.
Note when interval setting display is on, sleep does not
engage with no button press.

Initially, power save function is on. To turn off power save
function, follow the instructions below.
When power save function is off, maximum continuous
duration is approximately 10 days.

REC

/ / mark shows each

Sleeping......

1. Connect logger, COMMUNICATION BASE and

personal computer.

2. Start up application software packaged with

COMMUNICATION BASE.

3. Go to Communications on the menu bar and select

Power Save Options. Choose Off to turn off power save
function.

NOTE

______________________________________________________________

See COMMUNICATION BASE instruction manual to connect
logger and to install application software. To use application
software, see operation guide.

2.2 Power Save Function

8

_____________________________________________________________________

2.3 Setting Current Time

When replacing 3640-20 LUX LOGGER batteries or using
3640-20 stand-alone (with manual operation) for the first
time, connect with COMMUNICATION BASE and set
current time.

See how to set current time in COMMUNICATION BASE
instruction manual.

______________________________________________________________

2.3 Setting Current Time

_____________________________________________________________________

9

2.4 Connecting 9662 LUX SENSOR

To avoid damaging the unit, do not use any other

WARNING

sensors except 9662 LUX SENSOR as sensor
connection terminal.

Connecting 9662 LUX SENSOR

Connecting 9662 LUX SENSOR to sensor connection
terminal.When connecting sensor, securely insert connection
cable to unit as designated by triangle mark▲on
connection terminal.
Improper connection results in failure to output accurate
signal. The unit cannot display the correct reading value
unless the cable is inserted fully as illustrated.

9662 LUX SENSOR

Cap

Lens

Lens ring

______________________________________________________________

Measurement reference plane
(REF. LEVEL)

Cord length: 2000 mm

2.4 Connecting 9662 LUX SENSOR

10

_____________________________________________________________________

Electromagnetic noise may cause measurements to fluctuate
if the instrument is used in the vicinity of an inverter-type
power supply or radio transmitter. In such situations, make
a loop in the Lux Sensor cable and clamp the provided
ferrite core around the loop as shown in the illustration
below.

Zero ajustment

With the measurement value displayed, place the cap
provided over the lens. If you press the zero adjust button,
"

0Adj

" appears on the LCD, and zero adjustment is
performed for all ranges.
If the

REC

mark or " " mark is displayed on the LCD,
zero adjustment cannot be performed.
If the cap is not set (100 x1 or greater for the 2000 1x
range), "

CAP

" appears on the LCD. Make sure the cap is
set.
"

CAP

" goes out after a few seconds, and the measurement

value reappears. If the cap is set while "

CAP

"isdisplayed,

zero adjustment is performed automatically.

______________________________________________________________

2.4 Connecting 9662 LUX SENSOR

_____________________________________________________________________

Chapter 3

Settings

3.1 Setting Items

Logger stand-alone manual settings and settings in
combination with COMMUNICATION BASE with
measurement conditions stored in memory loaded from
personal computer.

11

NOTE

3640-20

1. Start recording Vaild Vaild Vaild

2. Stop recording Vaild --- ---

3. Interval setting Vaild Vaild Vaild

4. Current time setting --- Vaild Vaild

5. Start control --- Vaild Vaild

6. Recording method
setting

7. Range setting Vaild --- Vaild

8. Comments --- --- Vaild

--- Vaild Vaild

3640-20＋

COMMUNICATION

BASE

3640-20＋

COMMUNICATION

BASE＋PC

Comment setting are available when personal computer is
connected to both logger and COMMUNICATION BASE.

______________________________________________________________

3.1 Setting Items

12

_____________________________________________________________________

1. Start recording

Start manual recording by pressing logger REC/STOP
button for 1 second or initiate by prescheduled start set
using COMMUNICATION BASE.
When time scheduled start is engaged, clock icon appears
in display. When batteries are weak, recording does not
start. During recording, weak battery interrupts recording.

2. Stop recording

Stop recording by pressing logger REC/STOP button for 1
second.
Or recording stops automatically when data is full when set
to recording method: one time.

3. Interval setting

Set interval with logger alone or using COMMUNICATION
BASE.
(1/2/5/10/15/20/30 s, 1/2/5/10/15/20/30/60 min)

4. Current time setting

To set current time, see COMMUNICATION BASE
instruction manual.

5. Start control

Set specific recording date and time using COMMUNICATION
BASE to engage time scheduled start. When time scheduled
start is engaged, clock icon appears in display.

6. Recording method setting

Set recording method using COMMUNICATION BASE.
Choose either one time or endless recording method.
Default setting is one time.
One time: Ends recording when data reaches 32000.
Endless : Overwrites previously recorded data when data

exceeds 32000.

______________________________________________________________

3.1 Setting Items

_____________________________________________________________________

13

7. Range setting

With 3640-20 stand-alone, or connected with
COMMUNICATION BASE and PC, range setting is
available.
Two measurement range options are 2000 lx, 20000 lx and
2000000 lx.
Set the range comply with the maximum illuminance will
be measured.

8. Comments

Set comments entered by personal computer to logger using
COMMUNICATION BASE. When sorting collected
recording data, comments are helpful.
Comment setting is available when personal computer is
connected to both logger and COMMUNICATION BASE.

______________________________________________________________

3.1 Setting Items

14

_____________________________________________________________________

3.2 Manual Setting

3640-20 LUX LOGGER stand-alone manual operation
settings are shown below.

(1) Interval setting

Press INTERVAL button to switch measurement value
display to interval setting display. ("
Press SELECT button to designate interval.
Press INTERVAL button to complete setting.

(2) Setting range

Press RANGE button on monitor screen to select 2000 lx,
20000 lx or 2000000 lx.
When measurement range is reselected, decimal point
moves its position.

INTVL

" appears.)

2000 lx range

20000 lx range

200000 lx range

______________________________________________________________

3.2 Manual Setting

_____________________________________________________________________

15

(3) Starting and ending recording

Press REC/STOP button for 1 second to clear last recorded
data and start recording. ("

REC

" appears.)
Press REC/STOP button for 1 second to stop recording.
When memory is full, recording automatically stops when
recording method: one time is selected.
When batteries are weak, recording does not start. During
recording, weak batteries interrupt recording.

______________________________________________________________

3.2 Manual Setting

16

_____________________________________________________________________

3.3 Setting by COMMUNICATION BASE

1. Press logger INTERVAL button lightly to display LCD.

2. When logger LCD shows "
press REC/STOP button for more than 1 second to stop
recording.
During recording or waiting time before recording start
time, data transfer cannot be established with
COMMUNICATION BASE.

3. Press logger INTERVAL button to display interval
setting display. ("

INTVL

" appears.)

4. Connect COMMUNICATION BASE with logger.

5. Press COMMUNICATION BASE SEND button for more
than 1 second to send data settings to logger.

" mark or clock icon,

REC

NOTE

______________________________________________________________

3.3 Setting by COMMUNICATION BASE

Previously recorded logger data is erased when recording is
resumed. Be sure to load data to be saved to
COMMUNICATION BASE or to personal computer before
recording.
At any other time even when interval setting display is not
shown, except during recording and waiting for recording,
communication with COMMUNICATION BASE is available.
However communication is disabled when logger is set to sleep.

_____________________________________________________________________

17

3640-20 settings in application software
COMMUNICATION UTILITY packaged with
COMMUNICATION BASE are as follows.

Go to 'Communication' on the menu bar in
COMMUNICATION UTILITY and select 'Set measurement
condition'. When measurement condition setting window is
open, select '3640-20 setting items' to set settings.

NOTE

______________________________________________________________

Comment, recording mode, measurement channel, range and
alarm setting are only available in 3640-20 setting items.
Personal computer, COMMUNICATION BASE and 3640-20
must be connected during setting.
Common settings are available to be set in '3911, 3912 setting
items'. This enables 3640-20 and COMMUNICATION BASE
settings.

3.3 Setting by COMMUNICATION BASE

18

_____________________________________________________________________

______________________________________________________________

3.3 Setting by COMMUNICATION BASE

_____________________________________________________________________

Chapter 4

Specifications

19

Sensor types

Number of input 1 channel

Measurement
range

Range structure 2000 lx/20000 lx/200000 lx

Measurement
accuracy

Effect of radiated
radio-frequency
electromagnetic
field

LCD display Measurement value, Interval, Battery status

Interval 1/2/5/10/15/20/30 s, 1/2/5/10/15/20/30/60 min

Recording
capacity

Recording start Manual start, Prescheduled start

Recording stop Manual stop, Memory full

Recording
method

Displaying
Max/Min value

Data backup Available

Interface Infrared optical data transfer

Power supply LR03 alkaline battery X 4 (1.5 VDC X 4)

Maximum rated
power

Battery life Approx. 1 year

9662 LUX SENSOR

0 to 200000 lx

4% rdg. 5 dgt. (after zero ajustment)
Temperature characteristics : Temperature
properties: When measuring within the range 0 to
40

, variance is within 3% of the measurement at

23

.

30 dgt. at 3 V/m

(remaining battery power indicator: 4 phases)
Unit (X1000 lx), recording (REC), prescheduled(

32,000 data

One time, Endless

Displays maximum value and minimum value.

(Data not erased by weak batteries or battery
replacement)

0.1 VA

(temperature at 20
interval: 1 minute)
Approx. 10 days
(temperature at 20
interval: 1 minute)

, power save function: valid,

, power save function: valid,

)

______________________________________________________________

20

_____________________________________________________________________

Dimensions Approx. 57W X 86H X 30D mm (excluding

Mass Approx. 130 g (4.6 oz) (including batteries)

Location for use Indoors, altitude up to 2000 m (6562 feet)

Operate
temperature and
humidity range

Storage
temperature and
humidity range

Operating temperature and
humidity for guaranteed
accuracy
Guaranteed
accuracy period

Accessories LR03 alkaline battery X 4

Options COMMUNICATION BASE

Standards
Applying

projections)

2.24"W X 3.39"H X 1.18"D

0to40 , 80% RH or less (no condensation)
(32 to 122

-10 to 50 , 80% RH or less (no condensation)
(14 to 140

9662 LUX SENSOR
Instruction Manual

EMC EN61326
Safety EN61010 Pollution Degree 2

)

)

23 5 (73 9 ), 80%RH or less

1 year

______________________________________________________________

_____________________________________________________________________

21

Chapter 5

Reference

5.1 Recommended Levels of Illumination

Suitable levels of illuminance

(According to the JIS standard Z 9110-1979)

Offices

Level of

illuminance (lx)

1500 to 750

750 to 300

300 to 100

75 to 30

Offices, designing, and drawing rooms

Offices, conference rooms, and computer
rooms

Workrooms, corridors, stairways, and
restrooms

Indoor emergency stairways

Place

______________________________________________________________

5.1 Recommended Levels of Illumination

22

_____________________________________________________________________

Factories

Level of

illuminance (lx)

3000 to 1500

1500 to 750

750 to 300

300 to 150

75 to 30

Where such work as assembling, inspecting,
testing, selecting and extremely precision
visual work

Assembling, inspecting, testing, selecting and
precision visual work

Assembling, inspecting, testing, selecting and
visual ordinary work

Wrapping and packing

Indoor emergency stairways

Place

Schools

Level of

illuminance (lx)

1500 to 300

750 to 200

300 to 75

75 to 30

10 to 2

Place

Precision drawing or drafting, precision
experimenting, library reading rooms and
precision handicraft

Classrooms, library reading rooms, experiment
demonstration rooms, staff rooms and
gymnasia

Lecture halls, assembly rooms, locker rooms,
corridors, stairways and restrooms

Warehouses and emergency stairways

School passages (for night)

______________________________________________________________

5.1 Recommended Levels of Illumination

_____________________________________________________________________

23

5.2 Relative Spectral Response
Characteristics in the Visible Spectrum

Human perception of brightness ranges from 360 nm to 830
nm in the wavelength and is the maximum at 555 nm.
The International Commission on Illumination (CIE) has
established comparative standards for luminosity, setting the
maximum perception for 1 and indicating the amount of
perception of each wavelength by the relative value, and
calculating the average of many people. In the 3640-20, the
relative spectral response characteristics are close to the
comparative standards for luminosity.
The deviation from the comparative standards for
luminosity is determined by the fs value of JIS standard C
1609-1993.

3640-20

Relative luminous

______________________________________________________________

5.2 Relative Spectral Response Characteristics in the Visible Spectrum

24

_____________________________________________________________________

5.3 Angled Incident Light Characteristics

It is known that the luminance is proportional to the cosine
of the incident angle of light (the cosine law).
In the 3640-20, the shape of the light sensor, hook etc. is
so made that it can follow the cosine law closely.

3640-20

consine

characteristics (%)

Deviation from

______________________________________________________________

5.3 Angled Incident Light Characteristics

_____________________________________________________________________

25

Chapter 6

Maintenance and Service

Cleaning

To clean the product, 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.
Wipe the LCD or Lens ring gently with a soft, dry cloth.

Service

If the product seems to be malfunctioning, confirm that the
batteries are not discharged, and that the sensor is not open
circuited before contacting your dealer or Hioki
representative.
Pack the product 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.

Error Messages

The following error may be displayed on the LCD of the
main instrument as shown below.

Error message Meaning

ROM error

RAM error

Adjustment data error

When this occurs, repair or check the device. Contact your
dealer or Hioki representative. Contact your dealer or Hioki
representative.

______________________________________________________________

26

_____________________________________________________________________

______________________________________________________________

HIOKI 3640-20 LUX LOGGER

Instruction Manual

Publication date: May 2008 Revised edition 5

Edited and published by HIOKI E.E. CORPORATION

Technical Support Section

All inquiries to International Sales and Marketing Department

81 Koizumi, Ueda, Nagano, 386-1192, Japan

TEL: [phone] / FAX: [phone]

E-mail: [e-mail]

URL http://www.hioki.com/

Printed in Japan 3640A981-05

All reasonable care has been taken in the production of this manual,

but if you find any points which are unclear or in error, please
contact your supplier or the International Sales and Marketing
Department at HIOKI headquarters.

In the interests of product development, the contents of this manual

are subject to revision without prior notice.

The content of this manual is protected by copyright. No

reproduction, duplication or modification of the content is permitted
without the authorization of Hioki E.E. Corporation.

HEAD OFFICE

81 Koizumi, Ueda, Nagano 386-1192, Japan
TEL [phone] / FAX [phone]
E-mail: [e-mail] / URL http://www.hioki.com/

HIOKI USA CORPORATION

6 Corporate Drive, Cranbury, NJ 08512, USA
TEL [phone] / FAX [phone]

3640A981-05 08-05H

Printed on recycled paper