Yokogawa 510 Operating Manual

User’s Manual

51011, 51012, 51021 Digital Lux Meter

Store this manual in an easily accessible place for quick reference.

IM 51011-01EN

4th Edition: Oct. 2017 (YMI)

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 YOKOGAWA is strictly prohibited.

IM 51011-01EN

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

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 YOKOGAWA dealer.

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

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3 m 91001 30 m 91002

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.

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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 YOKOGAWA personnel 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.

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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.

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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

1. Component Names and Functions

Protects the light-detecting surface Used also during automatic zero adjustment

Light-detecting surface

Main unit

Display

POWER key

Turns the power on and off

Hand strap

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Keys

USB port (mini B type)

Use the USB cable to communicate to the PC and supply power.

Keys

51021

51011/51012

(single-function model)

POWER ON/OFF

RANGE

Δ / %

POWER ON/OFF

Δ / %

COMP

SET

RANGE

K 2

c d

CALL

AVG

ACC

RANGE Key

Use this key to switch the range. Press the key to switch to manual range mode.The range changes each time you press the key.To return to auto range mode, hold the key down for at least 1 second.

T-H Key

Use this key to set the timer hold-time or start the timer.

CALL Key

Use this key to view settings. Values (shown below) that are relevant to the measurement function that you are using are displayed while you hold the key down. Color correction factor, intensity measurement distance, high and low comparator limits, and ripple ratio

Δ/% Key

Use to display deviation. Press the key to display the deviation or percentage of measurement data in reference to a reference value. To return to the normal luminance measurement, hold the key down for at least 1 second.

K Key

Use this key in color correction measurement. Color corrected results are displayed. A switch is made between normal measurement and color correction measurement each time you press this key. You can also set the color correction factor.

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AVG Key

2 3

Use this key in average illuminance measurement. To return to the normal illuminance measurement, hold the key down for at least 1 second.

1, 2, 3, 4, and C Keys

Use this key in average illuminance measurement. You can store location data for the 4-point method and 5-point method.

(Location number display:

)

COMP Key

Use this key to set the high and low comparator limits and to start the comparator function. To return to the normal illuminance measurement, hold the key down for at least 1 second.

cd Key

Use this key to set the light intensity distance and to display the intensity. A switch is made between normal measurement and light source intensity measurement each time you press the key.

ACC Key

Use this key to set the limit for the totalized intensity of illumination and to display the integral time and integral value. To return to the normal illuminance measurement, hold the key down for at least 1 second.

S-F Key

Use this key in ripple measurement. A switch is made between normal measurement and ripple measurement each time you press the key.

SET Key

Use this key to configure various settings.

Key and Key

Use these keys to move the setting position and change values.

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Measurement reference

Hold switch

Holds the measured data reading

plane indication

Tripod-mounting screw

Battery cover

Recorder output connector

Connect to a

recorder or oscilloscope with a dedicated cable.

Eject button

Used to separate the light detector from the main unit

Response selector switch

Switches the light detector response speed between FAST and SLOW

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Display

*: When every element is showing (some elements are not used)

RCD

Lo Go Hi

COMP

D-H

1 2 3 4 C

AVG-MEMO-

S F

RSPS

AUTO POWER OFF

SET

CALL

MEMO

AVG

RCD

S-F

1 2 3

Element Description

8,8.8.8,8.8.8

AUTO POWER OFF

CALL

SET

S-F

R-H

lx h

m cd

Digital display of measured, calculated, and set values Lights in automatic power-off mode Deviation Lights when CALL is pressed Lights in setting mode Color correction factor Lights when a plug is inserted into the recorder output

connector Ripple measurement Lights in comparator mode Lights in range hold mode Lights in data hold and timer hold modes Lights when the battery voltage is low Lights during average illuminance Response setting Timer hold-time unit (seconds) Unit for illuminance measurement Unit for integral time of totalized intensity of illumination

Deviation display %

Unit for the distance to the light source Unit for luminous intensity; lights during light source

luminous intensity measurement

COMP

D-H

R-H

C S F

RSPS

HiLo

fc lx % cdft

S h

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2. Before Operation

2.1 Measurement Functions

The meter has the following measurement functions.

51011 51012

51021

Only the color correction function can be used in combination with another function. Operation of other measurement functions are not allowed except for the normal luminance measurement and color correction measurement screens.

2.2 Turning the Power On and Off

CAUTION

Check that the meter operates normally.

Single-function model

• Normal luminance measurement

• Deviation display

• Normal luminance measurement

• Deviation display

• Color correction luminance measurement

• Average luminance measurement

• Comparator function

• Light source luminous intensity measurement

• Totalized intensity of illumination

• Ripple measurement

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Cover the light-detecting surface with the cap, and press the POWER key to turn on the meter. The initial display appears. All the LED elements will light, and [--CAL--] will appear

(automatic zero-adjustment mode). Then, the display shows the

luminance measurement [0.00 lx] display. ([0.0 lx] appears on Model 51011 and 51012.) If you press the POWER key again, the meter will turn off.

(See chapter 3, “Normal Illuminance Measurement,” and

section 17.1, “Error Messages.”)

2.3 Setting the Response

You can set the response speed of the light detector with the

response selector switch.Set the switch to FAST or SLOW

according to your application.

Switch

position

FAST Approx.

SLOW Approx.

Response

speed

10 ms

500 ms

Application

Measurement of continuous light such as daylight and interior lighting (fluorescent lamps, incandescent lamps).

The display shows [RSPS

Measurement of the average illuminance of flickering lights or a light that varies over time such as that from a TV screen.

The display shows [RSPS

F ].

S ].

Note

If the recorder output is used for waveform observation, set the

switch to FAST.

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2.4 Checking and Replacing Batteries

Battery

Main unit

Battery cover

When the battery voltage drops, the display area shows a [

] mark. When this mark appears, replace the batteries with new ones. Turn off the power, and remove the battery cover. Check the polarity markings, and insert the new batteries in the correct orientation. Close the battery cover completely.

Battery type: Two AA dry cells

2.5 Automatic Power Off

The meter has an automatic power-off function to prevent unnecessary battery usage when you forget to turn off the power. If there is no key activity for about 30 minutes, the meter beeps twice and automatically turns off. Pressing any key while the meter is beeping extends the time until the power turns off for another 30 minutes. The automatic power-off function is disabled while the totalized intensity of illumination or comparator function is being executed or when a plug is inserted in the recorder output connector. When the automatic power-off function is enabled,

[AUTO POWER OFF] is displayed.

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Releasing the Automatic Power-Off Function

Cover the light-detecting surface with the cap.

Press the HOLD switch (HOLD switch lock) and then the

POWER key to turn on the power.

After the initial display, [AUTO POWER OFF] disappears and the

automatic power-off feature is released.

Press the HOLD switch again to release the HOLD state (lock),

and perform measurements.

Reverting the Automatic Power-Off Function

Press the POWER key to turn the power off.

Cover the light-detecting surface with the cap.

(Check that the HOLD switch is not locked.)

Press the POWER key again to turn on the power.

After the initial display, [AUTO POWER OFF] appears,

and the automatic power-off function returns.

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