YOKOGAWA 51011 Manual de usuario

User’s

Manual 51011, 51012, 51021

Digital Lux Meter

IM 51011-01EN

4th Edition: Oct. 2017 (YMI)

Store this manual in an easily accessible

place for quick reference.

IM 51011-01EN 1

Introduction

Thank you for purchasing the digital lux meter.

This user’s manual primarily explains the handling precautions and

basic operations of the digital lux meter.

To ensure correct use, please read this manual thoroughly before

beginning operation.

After reading this manual, keep it in a safe place.

List of Manuals

The following manuals, including this one, are provided as manuals

for the digital lux meter. Please read all manuals.

IM 51011-01E User's Manual (this manual)

IM 51011-93Z2 Document for Korea

Contact information of Yokogawa offices worldwide is provided on

the following sheet.

PIM 113-01Z2 Inquiries List of worldwide contacts

Notes

• The contents of this manual are subject to change without prior

notice as a result of continuing improvements to the instrument’s

performance and functionality. The figures given in this manual

may differ from the actual screen.

• Every effort has been made in the preparation of this manual to

ensure the accuracy of its contents. However, should you have

any questions or find any errors, please contact your nearest

YOKOGAWA dealer.

• Copying or reproducing all or any part of the contents of

this manual without the permission of YOKOGAWAis strictly

prohibited.

IM 51011-01EN

4th Edition: October 2017 (YMI)

2013, Yokogawa Meters & Instruments Corporation,

2017, Yokogawa Test & Measurement Corporation

Printed in Japan

Trademarks

• Adobe, Acrobat, and PostScript are either registered trademarks

or trademarks of Adobe Systems Incorporated.

• In this manual, the ® and TM symbols do not accompany

their respective registered trademark or trademark names.

• Other company and product names are registered trademarks

or trademarks of their respective companies.

Revisions

• February 2013 1st Edition

• October 2013 2nd Edition

• May 2013 3rd Edition

• October 2017 4th Edition

IM 51011-01EN 3

Checking the Contents of the Package

Unpack the box and check the contents before operating the

instrument. If the wrong items have been delivered, if items are

missing, or if there is a problem with the appearance of the items,

contact your nearest YOKOGAWAdealer.

Digital Lux Meter

Check that the product that you received is what you ordered by

referring to the model name on the name plate.

MODEL Specifications

51011 JIS Class A

Measurement ranges: 99.9/999/9,990/99,900/999,000

51012 JIS Class AA

Measurement ranges: 99.9/999/9,990/99,900/999,000

51021 JIS Class AA

Measurement ranges:

9.99/99.9/999/9,990/99,900/999,000

51011, 51012: Single-function model

Compliant standard: JIS C 1609-1: 2006

(JIS: Japanese Industrial Standards)

Standard Accessories

AA-size alkaline batteries 2

Recorder output plug (JC017A) 1

Soft-sided case (RB038A) 1

User’s Manual (Japanese and English) 2

Optional Accessories (Sold separately)

Item Specifications Model

Light-detector extension

cable 3 m 91001

30 m 91002

IM 51011-01EN

Conventions Used in This Manual

Notes and Cautions

The notes and cautions in this manual are categorized using

the following symbols.

Improper handling or use can lead to injury to

the user or damage to the instrument.

This symbol appears on the instrument to

indicate that the user must refer to

the user's manual for special instructions.

WARNING

Calls attention to actions or conditions that

could cause serious or fatal injury to the user,

and precautions that can be taken to prevent

such occurrences.

CAUTION

Calls attention to actions or conditions that could

cause light injury to the user, or cause damage

to the instrument or user’s data, and precautions

that can be taken to prevent such occurrences.

Note Calls attention to information that is important for

the proper operation of the instrument.

IM 51011-01EN 5

Safety Precautions

This product is designed to be used by a person with specialized

knowledge.The general safety precautions described herein must

be observed during all phases of operation. If the instrument

is used in a manner not specified in this manual,

the protection provided by the instrument may be impaired.

This manual is an essential part of the product; keep it a safe

place for future reference.

YOKOGAWA assumes no liability for the customer’s failure to

comply with these requirements.

The following symbols are used on this instrument.

Warning: handle with care.

Refer to the user’s manual or service manual.

This symbol appears on dangerous locations on

the instrument which require special instructions for

proper handling or use.

The same symbol appears in the corresponding

place in the manual to identify those instructions.

Make sure to comply with the precautions below.

Not complying might result injury or death.

WARNING

Use the instrument Only for Its Intended Purpose

The lux meter is for measuring illuminances.

Do not use this meter for any other purpose.

Check the Physical Appearance

Do not use the meter if there is a problem with its physical appearance.

Do Not Disassemble

Only qualified YOKOGAWApersonnel may disassemble this product.

Do Not Operate in an Explosive Atmosphere

Do not use this meter in the presence of flammable gases or vapors.

Doing so is extremely dangerous.

IM 51011-01EN

CAUTION

• The meter is for domestic use (Class B) and meets the

electromagnetic compatibility requirements.

• Do not drop the meter or strike it against hard objects.

• Avoid storing the meter in direct sunlight or in a humid environment.

• Using the meter in an low-temperature environment (–10°C to 0°C)

may slow down the display’s response.

• Avoid using the meter in a dirty or dusty environment or

in an environment with salt or corrosive gases.

• Do not wipe the meter with organic solvents.

Dirt or dust adhering to the light-detecting surface of the meter

decreases measurement accuracy.

Wipe the surface clean with a soft, dry cloth.

• Do not separate the light-detector from the main unit with

the power on.

IM 51011-01EN 7

Measurement Category

WARNING

• Do not use the meter for measurements in locations falling

that fall under Measurement Categories II, III, and IV.

• Do not use the meter to measure voltage or current.

The meter is designed for measurement category I:

EN 61010-1: 2001

Measurement

Category Description Remarks

CAT I

For measurement performed on

circuits not directly connected to

MAINS.

CAT I: EN 61010-1: 2001

Circuits not connected

to a mains power

source.

CAT II For measurement performed on

circuits directly connected to

the low-voltage installation.

Appliances, portable

equipment, etc.

CAT III For measurement performed in

the building installation. Distribution board,

circuit breaker, etc.

CAT IV For measurement performed at

the source of the low-voltage

installation.

Overhead wire,

cable systems, etc.

IM 51011-01EN

Contents

Introduction.............................................1

Checking the Contents of the Package .......................3

Conventions Used in This Manual ...........................4

Safety Precautions .......................................5

Measurement Category ...................................7

1. Component Names and Functions........................9

2. Before Operation ....................................14

2.1 Measurement Functions ..........................14

2.2 Turning the Power On and Off......................14

2.3 Setting the Response ............................15

2.4 Checking and Replacing Batteries ..................16

2.5 Automatic Power Off .............................16

2.6 Notes on Illuminance Measurement .................18

3. Normal Illuminance Measurement .......................19

4. Color Correction Measurement (K Key) ...................20

5. Timer Hold (HOLD and T-H Keys) .......................22

6. Range Hold (RANGE Key) .............................24

7. Average Illuminance (AVG Key).........................25

8. Deviation Display (Δ/% Key)............................27

9. Light Source Luminous Intensity (cd Key) .................28

10. Totalized Intensity of Illumination

(ACC Key) .........................................29

11. Comparator (COMP Key)..............................32

12. Ripple Measurement (S-F Key) .........................33

13. Communication Functions .............................36

13.1 Cable Connection and Interface Specifications.........36

13.2 List of Commands ...............................37

13.3 Detailed Description of Commands..................38

14. Recorder Output (Analog Output) .......................41

15. Separating the Light Detector...........................42

16. Supplying Power through USB ..........................42

17. After-Sales Service...................................43

17.1 Error Messages .................................43

17.2 Calibration .....................................43

18. Specifications .......................................44

19. Characteristics of Relative Visible-

spectrum Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

20. Characteristic of Oblique Incident Light ...................51

21. Illuminance Measurement Method .......................52

22. For the Pollution Control of Electronic

and Electrical Products of the People's Republic of China.....55

IM 51011-01EN 9

1. Component Names and Functions

Light-detecting surface

Display

Main unit

Hand strap

Keys

Cap

Protects the

light-detecting surface

Used also during

automatic

zero adjustment

Light detector

Can be separated

from the main unit

(using an extension

cable)

USB port

(mini B type)

Use the USB cable

to communicate to the PC

and supply power.

POWER key

Turns the power

on and off

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