Yokogawa Yokogawa CA450 Manual

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User's Manual

CA450

Process Multimeter

99 Washington Street Melrose, MA 02176

Phone 781-665-1400 Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

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

6th Edition: Aug. 2018 (YMI)

IM CA450-EN

Introduction

Thank you for purchasing our CA450 Process Multimeter.

This User’s Manual explains the functions of this Process Multimeter, as well as the operating methods and handling precautions. Before using this product, thoroughly read this manual to understand how to use it properly.

■ List of Manuals

The following manuals, including this one, are provided as manuals for the CA450. Please read all manuals. IM CA450-EN User's Manual (this manual) IM CA450-93Z2

Document for Korea

Contact information of

the following sheet. PIM 113-01Z2

Yokogawa ofces worldwide is provided on

Inquiries

List of worldwide contacts

■ Notes

• The information contained in this manual is subject to change without notice. Furthermore, the actual display ite

appearing in this manual.

• Every effort has been made to ensure the information contained herein is accurate. However, should any concerns, errors, or emissions come to your attention, or if you have any comments, please contact us.

• Copying or reproduction of any or all of the content of this manual without YOKOGAWA's permission is strictly prohibited.

ms may differ slightly from the ones

■ Registered Trademarks

“HART” is a registered trademark of the HART Communication Foundation.

IM CA450-EN i

■ Revision Information

1st Edition: October 2010

2nd Edition: February 2011

3rd Edition: March 2015 4th Edition: October 2016 5th Edition: October 2017 6th Edition: August 2018

Checking the Contents of the Package

After receiving the product and opening the package, check the items described below. 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.

• Model and Sufx Codes

Model Sufx Code

CA450 -E

• NO. (Serial Number)

Refer to this serial number on the nameplate when contacting the vendor about the instrument. (For the model, nameplate, and serial number, see section 4.2, “Components.”)

• Standard Accessories

Make sure that the package contains all the accessories listed below and that they are all free from any damage. Standard accessories are not covered by warranty of this instrument.

AA-size alkaline batteries 4 pieces Test leads (98073) 1 set Lead cables (98064) 1 set Fuses (inside the CA450) (99042) 440 mA/1000 V 2 pieces User’s manual 1 copy Blank cover 1 piece

ii IM CA450-EN

Regarding Safe Use of This Product

WARNING

CAUTION

Note

Tip

This product is designed to be used by a person with specialized knowledge. When operating the instrument, be sure to observe the cautionary notes given below to ensure correct and safe use of the instrument. If you use the instrument in any way other than as instructed in this manual, the instrument’s protective measures may be impaired. This manual is an essential part of the product; keep it a safe place for future reference. YOKOGAWA is by no means liable for any damage resulting from use of the instrument in contradiction to these cautionary notes.

The following safety symbols are used on the instrument and in the manual:

This indicates that the operator must refer to an explanation in the instruction manual in order to avoid the risk of serious injury or the loss of life.

This indicates that the operator must refer to an explanation in the instruction manual in order to avoid the risk of injury or damage to the product.

This indicates information that is essential for handling the instrument or should be noted in order to familiarize yourself with the instrument’s operating procedures and/or functions.

This indicates supplemental information for explanations.

IM CA450-EN iii

Danger! Handle with Care

WARNING

This symbol indicates that the operator must refer to an explanation in the instruction manual in order to avoid risk of injury or death of personnel or damage to the instrument.

This symbol indicates double insulation or reinforced insulation.

This symbol indicates DC voltage/current.

This symbol indicates AC voltage/current.

This symbol indicates AC and DC.

This symbol indicates a fuse.

This symbol indicates a battery.

This symbol indicates ground (earth).

■ Always observe the following instructions. Failure to do so

may result in electrical shock or other dangers that

may lead to serious injury or the loss of life.

Use the instrument Only for Its Intended Purpose

This instrument is for measuring voltage or current and generating (output) current. Do not use this instrument for other purpose.

Check the Physical Appearance

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

Operating Environment

• Do not operate the instrument in an atmosphere where any ammable or

explosive gas ispresent.

• Avoid using the instrument if it has been exposed to rain or moisture or

if your hands are wet.

iv IM CA450-EN

WARNING

CAUTION

Test Leads and Lead cables

• Use the products provided by YOKOGAWA for this device.

• Do not use degraded or damaged test leads or lead cables. Check the continuity of the test leads and lead cables.

• When you attach or remove the test leads or lead cables or remove the case

(for example to change the batteries), be sure to remove the lead cables from the circuit under measurement.

• When you remove the case (for example to change the batteries),

be sure to remove the test leads and lead cables from the instrument.

• There are caps at the ends of the test leads. To ensure safety (safety standard EN 61010-031), be sure to put the caps on

the leads when you use them.

Damaged Signal Cable

If the signal cable (test leads and lead cables) is torn and the inner metal is exposed or if a color different from the outer sheath appears, stop using the cable immediately.

Casing

Do not use the instrument if there is any damage to the casing or when the casing is removed.

Fuses

Use fuses of the specied rating when the fuse is replaced.

Do Not Remove the Case or Disassemble

Do not open the case except when replacing batteries or fuse. Only Yokogawa service personnel are authorized to remove the casing or disassemble or modify the instrument. Do not attempt to repair the instrument yourself, as doing so is extremely dangerous. When the instrument needs an internal inspection or calibration, contact YOKOGAWA or the dealer from whom you purchased the instrument.

The instrument is for domestic use (Class B) and meets the electromagnetic compatibility requirements.

IM CA450-EN v

Concernant l’usage en toute sécurité de ce produit

AVERTISSEMENT

ATTENTION

Remarque

Conseil

Dans le cadre de l'utilisation de cet instrument, assurez-vous de respecter les mises en garde indiquées ci-dessous pour garantir une utilisation correcte et sans danger de l'instrument. Si vous utilisez l'appareil d'une autre manière que celle indiquée dans ce manuel, il est possible que cela endommage les dispositifs de protection. YOKOGAWA ne saurait en aucun cas être déclaré responsable de tout dommage résultant d'une utilisation de l'instrument ne respectant pas ces mises en garde.

Symboles utilisés sur l'instrument et dans ce manuel d’instructions:

Indique un danger. Attire l’attention sur une utilisation quipourrait engendrer des accidents susceptibles de provoquer des blessures qui peuvent éventuellement s’avérer mortelles.

Indique un danger. Attire l’attention sur une utilisation qui pourrait engendrer une blessure personnelle et/ou être préjudiciable au produit.

Indique les informations essentielles à la manipulation de l’instrument ou qui

doivent être prises en compte an de vous familiariser avec les procédures

d’utilisation et/ou l es fonctions de l’instrument.

Ce qui suit indique des informations supplémentaires pour les explications.

vi IM CA450-EN

Danger ! Manipuler avec soin.

AVERTISSEMENT

Ce symbole indique que l’opérateur doit se reporter à une explicationdonnée par le manuel d’instruction, an d’éviter tout accident susceptible de provoquer des blessures au personnel qui peuvent éventuellement s’avérer mortelles, ou de protéger l’appareil.

Ce symbole indique une double isolation ou une isolation renforcée.

Ce symbole indique une tension/intensité C.C.

Ce symbole indique une tension/intensité C.A.

Ce symbole indique le C.A. et le C.C.

Ce symbole indique un fusible.

Ce symbole indique une batterie.

Ce symbole indique la masse (terre).

■ Les précautions suivantes doivent être prises. Dans le cas contraire, des accidents susceptibles de provoquer des blessures qui peuvent éventuellement s’avérer mortelles résultant de dangers tels que des chocs électriques, ou un préjudice au produit, risquent de survenir.

Utilisez cet instrument uniquement pour l'usage auquel il est destiné.

Cet instrument est destiné à mesurer une tension ou un courant et à générer

du courant (sortie). N'utilisez pas cet instrument à d'autres ns.

Vériez l'aspect physique

N'utilisez pas cet instrument si son aspect physique présente un problème.

Environnement d’opération

• N’utilisez pas l’instrument là où un gaz ou de la vapeur (atmosphère)

inammable ou explosive quelconque est présente.

• Évitez d’utiliser l’instrument s’il a été exposé à la pluie ou à l’humidité ou si vos mains sont humides.

IM CA450-EN vii

AVERTISSEMENT

ATTENTION

Fils de test et câbles de dérivation

• Utilisez les produits fournis par YOKOGAWA pour ce dispositif.

• N'utilisez pas de ls de test ou de câbles de dérivation dégradés ou endommagés.

Vériez la continuité des ls de tes

• Lorsque vous xez ou retirez les ls de test ou les câbles de dérivation,

ou que vous enlevez le boîtier (par exemple pour changer les batteries), veillez à retirer les ls de test et les câbles de dérivation du circuit en cours de mesure.

• Lorsque vous enlevez le boîtier (par exemple pour changer les batteries),

veillez à retirer les ls de test et les câbles de dérivation de l'instrument.

• Un chapeau est fourni sur le bout d’un l de test. Utilisez un l de test avec le chapeau placé dessus pour une bonne sécurité

(normes de sécurité: EN 61010-031).

t et des câbles de dérivation.

Câble de signal endommagé

Si le câble de signal (des ls de test et des câbles de dérivation) est déchiré et que

le métal intérieur est exposé ou si une couleur différente de la gaine externe est

visible, arrêter immédiatement d’utiliser ce câble.

Boîtier

N’utilisez pas l’instrument s’il y a un dommage quelconque au boîtier ou quand le boîtier est enlevé.

Fusibles

Utilisez les fusibles avec l’évaluation spéciée quand le fusible est remplacé.

Ne retirez pas le boîtier, ne le démontez pas.

N'ouvrez pas le boîtier, sauf pour remplacer la batterie ou un fusible.

Seul le personnel qualié de YOKOGAWA est habilité à retirer le boîtier et démonter ou modier l'instrument. N'essayez pas de réparer/modier l'instrument

vous-même, car cela est extrêmement dangereux. Pour un contrôle interne ou un étalonnage de l’instrument, contacter YOKOGAWA ou le revendeur auprès duquel a été acheté l’instrument.

Cet instrument est destiné à un usage domestique (classe B) et respecte les exigences en matière de compatibilité électromagnétique.

viii IM CA450-EN

Introduction .....................................................i

Checking the Contents of the Package............................... ii

Regarding Safe Use of This Product.................................iii

Concernant l’usage en toute sécurité de ce produit .....................vi

1. Overview................................................... 1

2. Operating Environment ........................................ 2

3. Specications ............................................... 4

3.1 General Specications.................................... 4

3.2 Accuracy ..............................................7

4. Operation .................................................10

4.1 Precautions before Measurement .......................... 10

4.2 Components........................................... 11

4.3

Measuring Instructions................................... 18

4.3.1

4.3.2 DC Voltage Measurement

4.3.3 Measuring Using Sensors (SENSOR)................. 19

4.3.4 Resistance Measurement (Ω) ....................... 20

4.3.5 Continuity Check

4.3.6 Diode Test

4.3.7 DC Current Measurement

4.3.8

4.3.9

4.3.10 Auto Hold Function ...............................27

4.3.11 Peak Hold Function ...............................27

4.3.12 Relative Value Display

4.3.13 MIN/MAX/AVG Function ...........................30

4.4 Output Instructions...................................... 31

4.4.1 Constant Current Output (SOURCE mode)............. 32

4.4.2 Constant Current Output (SIMULATE mode) ...........34

4.4.3

4.4.4 Current Span Setting .............................. 38

4.5 Auto Power-Off (Sleep) Function........................... 38

oltage Measurement

AC V

............................ 21

................................. 21

Loop Power Measurement..........................25

Frequency Measurement (Hz)....................... 26

Current Sweep Output............................. 36

............... 18

....................23

.................. 29

IM CA450-EN ix

4.6 Setup Function......................................... 39

4.6.1 Turning the Buzzer On and Off ......................40

4.6.2 SENSOR Mode Input, Display, and Unit Settings ........41

4.6.3 Current Span Setting for the 100 mA Range for DCmA Measurement

4.6.4

Setting the Slow Step

4.6.5

Returning the Settings to

4.7

Additional Po

4.7.1

Making

User Calibratio

5.1 Cali

5.1.1

5.1.2 Loop Power Calibration ............................48

5.2 Calibrating Output ......................................49

5.3 What to Check after Calibration............................ 51

6. Communication............................................. 52

6.1 Cable Connection and Interface Specications ................ 52

6.2 Communication Commands............................... 53

6.3 Detailed Command Descriptions ...........................55

6.4 List of Errors...........................................73

6.5

Communication Command V

6.6 Status Byte Format .....................................76

Replacing the

7.1 Replacing th

7.2

Replacing th

Calibration and

Troubleshooting ............................................

10. Sales in Each

10.1 Disposing the

10.2

How to Replace and Dispose th

10.3

Authorized R

10.4

For the Pollu Products of the People's Republic of China

Appendix (External Dimensions)................................... 84

n Function

brating Measurements

Peak Hold Calibration ............................. 48

Batteries and Fuses

e Batteries ..................................

e Fuses ....................................

After-Sales Service .............................

Country or Region

epresentative in the EEA

tion Control of Electronic and Electrical

....................................42

Time . . . . . . . . . . . . . . . . . . . . . . . . . 43

Their Factory Default Values

wer-on Functions ............................

All the LCD Elements Appear

.....................................45

................................46

alidity Table

..............................77

...............................82

Product ...................................

e Batteries

................. 44

.................... 74

................... 82

....................... 82

................... 83

.... 43

77 78 79 81

x IM CA450-EN

1. Overview

• Display

Main display: 5-digit LCD, Subdisplay: 5-digit LCD (Measured values other than current values are displayed with 4 digits.)

• Various Functions

Measurement Functions

DC voltage, AC voltage, DC current (24 V loop power supply possible), resistance, frequency, continuity check, and diode test

Output Functions

DC current (constant output, current sweep output, and SIMULATE (SINK) function)

Additional Functions

Data hold (D•H); auto hold (A•H); peak hold (P•H); auto range (Auto); range hold (Range Hold); maximum, minimum, and average value recording

and measurement; zero adjustment (Ω); relative measured value display (RELΔ, REL%); and backlight

• Communication (Optional PC communication set required)

Measurement data can be transferred to a PC through the use of a USB communication adapter and a USB cable.

• Safety

Conforms to IEC 61010-1, Safety requirements for electrical equipment for measurement, control, and laboratory use. “Safety requirements for electrical equipment for measurement, control, and laboratory use” This instrument uses a current-input terminal shutter for preventing wrong input. This instrument uses high-performance UL-standard fuses.

IM CA450-EN 1

2. Operating Environment

WARNING

■ Measurement Category

Measurement

3.2 Accuracy

Standard test conditions (1) Ambient temperature:

(2) Relative humidity:

(3) Orientation:

Horizontal or standing

(4) External magnetic elds:

Accuracy: ± (% of reading + digits)

* Each of the response times indicates the time it takes for the accuracy to

fall within the specied range.

DC Voltage Measurement

Range Resolution Accuracy Input Resistance

600 mV 0.1 mV 0.09% + 2 10 MΩ or more

6 V 0.001 V

60 V 0.01 V

1000 V 1 V 0.1% + 1

NMRR: 60 dB or more, 50/60 Hz ± 0.1% CMRR: 120 dB or more, 50/60 Hz (Rs = 1 kΩ)

Response time: Within 1 second

AC Voltage Measurement

AC coupling, rms value detection: sine wave

Range

600 mV 0.1 mV

For a range of 5 to 100%, the accuracy for the 1000 V range is 200 V to 1000 V CMRR: 60 dB or more, DC to 60 Hz (Rs = 1 kΩ)

For nonsinusoidal waveforms whose crest factor is less than 3,

add ±(2% of reading + 2% of range) to the accuracy.

For the 1000 V range, the peak voltage is 1500 V or less Response time: Within 2 seconds

Resolution

50/60 Hz

6 V 0.001 V

60 V 0.01 V

0.5% + 5 1% + 5

600 V 0.1 V

1000 V 1 V —

23°C ± 5°C

45% to 75% RH (no condensation)

errestrial magnetic eld only

Approx. 11 MΩ

0.09% + 1

Approx. 10 MΩ600 V 0.1 V

Accuracy

40 Hz to

500 Hz

500 Hz to

1 kHz

1.5% + 5

Impedance

10 MΩ or more, <200 pF

Approx. 11 MΩ, <50 pF

Approx. 10 MΩ, <50 pF

Maximum Input

1000 VDC

1000 Vrms AC

Input

Voltage

Maximum

Input

Voltage

1000 VDC

1000 V rms AC

7IM CA450-EN

DC Current Measurement

Range Resolution Accuracy Voltage Drop 30 mA 0.001 mA 0.05% + 2 < 0.3 V 100 mA *1 0.01 mA 0.05% + 2 < 0.8 V

*1 Only the 30 mA range can be used during LOOP POWER output. Response time: Within 1 second

Resistance Measurement ( Ω )

Maximum

Range

Resolution

Accuracy

Measuring

Current

600 Ω 0.1 Ω 0.2% + 2 <1.2 mA <3.5 V

6 kΩ 0.001 kΩ

60 kΩ 0.01 kΩ <13 µA

0.2% + 1 *1

<110 µA

600 kΩ 0.1 kΩ <1.3 µA

6 MΩ 0.001 MΩ 0.35% + 3

60 MΩ 0.01 MΩ 1% + 2 *2

*1 The accuracy after ZERO CAL

*2 For 40 MΩ to 60 MΩ, the accuracy is 2% + 2.

Response time:

Within 2 seconds for 600 Ω to 600 kΩ, within 10 seconds for 6 MΩ to 60 M

<130 nA

Open-Loop

Voltage

<1.3 V

Continuity Check

Range

Resolution

600 Ω 0.1 Ω

Operating Range

The buzzer sounds at

resistances lower than

50 ± 30 Ω.

Measuring

Current

<1.2 mA < 3.5 V 1000 Vrms

Open-Loop

Voltage

Input Protective

Voltage

1000 Vrms

Input Protective

Voltage

Diode Test

Range

2 V 0.001 V 1% + 2

Resolution

Accuracy

Measuring

Current

(Vf = 0.6 V)

Approx.

0.5 mA

Open-Loop

Voltage

Input Protective

Voltage

<3.5 V 1000 Vrms

IM CA450-EN8

Frequency Measurement ( Hz )

AC Coupling

Range Resolution Accuracy Input Voltage Range

10.00 Hz to 199.99 Hz 0.01 Hz

90.0 Hz to 1999.9 Hz 0.1 Hz

0.900 Hz to 19.999 kHz 0.001 kHz 0.4 to 600 Vrms

0.005% + 1

0.3 to 600 Vrms

Peak Hold (P•H)

Measurement Function Accuracy Minimum Detection Width

DCV ±100 digits >6 ms

DC Output

Range

20 mA 0.001 mA

Resolution

Accuracy Load Condition

SOURCE 0 to 20 mA Compliance voltage 28 V

0.05%

of range

SIMULATE (SINK) 0 to 20 mA External power supply 15 to 48 V overrange up to 25 mA

< 10 mH

24 V Loop Power Supply (LOOP POWER)

Range Load Condition

24 V 24 VDC (typ.), load current 20 mA

9IM CA450-EN

4. Operation

CAUTION

4.1 Precautions before Measurement

■ Operation and Strage Precautions

• When inserting the batteries into the instrument, refer to section 7.1, “Replacing the Batteries.”

• There is a blank cover on the upper part of the back casing.

Only remove it when connecting th

package (sold separately).

• Do not use the instrument near devices that produce high levels of noise or in areas subject to sudden changes in temperature.

Doing so may result in unstable rea

Cleaning

• Do not wipe the instrument using benzine, paint thinner, or any other solvent (chemical).

Doing so may lead to discoloration and other problems. Use a dry cloth to clean the instrument.

Strage

• Do not leave the instrument exposed to direct sunlight or in a hot and

humid location, such as the inside of a vehicle, for a signicant length of time.

• If you do not intend to use the instrument for a signicant period of time,

remove its batteries.

e USB adapter of the communication

dings and errors.

■ Turning the Power On and Off

To verify the instrument's functionality, check that the measured value is update after turning on the power. If the measured value is not update, the reading will be incorrect and may lead to possible electrical shock or personal injury.

Turn the function switch from the OFF position to the measurement range position. The power turns on. After measuring, turn the function switch off. (If test leads or lead cables are connected to the current measurement and output terminals, you cannot turn the function switch to the OFF position.)

IM CA450-EN10

4.2 Components

Display (LCD)

Model name

Front Panel

■ CA450

SHIFT key MIN/MAX key RANGE key HOLD key

LIGHT key SELECT key

RELΔ/% key

Hz key

Function switch

Input and output terminal area

11IM CA450-EN

Blank cover

Rear Panel

(Back)

Under (hidden below)

the stand

1000V 10A CAT II

Caps of Test leads

Measurement category O (Other) DC 70V 100 mA

Serial number

Nameplate

■ Test leads (98073)

With Caps: 1000V 10A CAT III/600V 10A CAT IV

Without Caps:

■ Lead cables (98064)

Stand

Black

Red

IM CA450-EN12

(1) Function switch

V / Hz

mV / mV

Ω /

mV / mV

Ω /

Use this switch to turn the power on and off and to select the measurement mode.

Function Mode Function Mode

OFF

Turns the CA450 off. Continuity check AC voltage measurement and frequency measurement

DC voltage measurement

DC/AC voltage measurement in mV and various SENSOR modes

Resistance measurement Diode test

OUT PUT

DC current measurement

DC current output Constant current output

DC current output Current sweep output

DC current measurement Loop power supply

If test leads or lead cables are connected to the current measurement

and output terminals, you cannot turn the function switch to the OFF position.

(2) SELECT key

By pressing this key, you can select different measurement modes when the function switch is at the positions listed below. You can switch out of the selected mode by pressing the key again.

position: AC voltage mV measurement

(AC SENSOR measurement in SENSOR mode)

position:

Diode test

position:

(3) RANGE key

Use this key to select the measurement range.

Fixed

AUTO

range: “Range Hold” appears on the display.

The range increases each time you press RANGE.

range:

“AUTO” appears on the display. To select AUTO range, hold down RANGE for 1 second or longer.

The SELECT key turns the internal series resistor for HART communication on and off.

Operation mode switching

13IM CA450-EN

(4) HOLD key

Use this key to hold the measured values. Press HOLD to switch between data hold, auto hold, peak hold, and no hold (release). (Hold modes that are not supported for the selected measurement function are skipped.)

Data hold:

Auto hold:

Peak hold

The currently displayed measured values are held. “D•H” appears on the display.

The measured values are automatically held according to the operation of the test leads. “A•H” appears on the display.

The peak values are held. “P•H” appears on the display.

(5) LIGHT key

Use this key to turn the backlight on and off. Press the key once to turn it on. Press it again to turn it off.

Use this key to control the sleep function. During measurement or output, Hold down LIGHT for 2 seconds or longer to put the CA450 in sleep mode. (While the CA450 is in sleep mode, hold down the LIGHT key for 2 seconds or longer to clear sleep mode.) (You cannot clear sleep mode immediately after the CA450 is put in sleep mode. Wait at least 2 seconds after the CA450 is put in sleep mode before you clear it.)

(6) key

Use this key to display the measured values as relative values (you can display the differences between values using numbers or percentages).

1: Difference display

2: Percentage difference

display

(REL%)

" " appears on the display.

" " and " % " appear on the display.

Use this key during the zero adjustment of the resistance measurement function. With the test leads shorted, press the REL key to execute zero adjustment.

IM CA450-EN14

(7) MIN/MAX key

Use this key to display the minimum (MIN), maximum (MAX), and average (AVG) values within the measurement period. When you press the key, recording starts, and “MIN,” “MAX,” and “AVG” appear on the display. (The AUTO OFF function is disabled.) When peak hold is enabled, press the REL key to reset the peak value.

(8) Hz key

When the function switch is turned to , use this key to switch between AC voltage measurement and frequency measurement.

Use this key in calibration mode to conrm the calibration value.

(9) SHIFT key

If you press SHIFT while a measurement mode is selected, “Shift” appears on the display.

In this state, you can congure various settings by pressing the various keys.

SHIFT +

LIGHT key

SELECT key

SETUP mode

Switches from mV mode to SENSOR mode

While an output mode is selected, press SHIFT to switch between SOURCE and SIMULATE.

15IM CA450-EN

■ Display (LCD) Description

Symbol or Unit Description

Appears during DC measurement or output

Appears during AC measurement

Appears when the polarity is negative (minus)

Appears during diode test mode

Appears during continuity check mode

Appears when relative values are being displayed

Indicates that the measurement range is set to xed

Indicates that the measurement range is set to auto

Indicates the present range

Appears when data hold is enabled

Appears when auto hold is enabled

Appears when peak hold is enabled

Appears when the MIN, MAX, and AVG values are being measured

Appears when the MAX value is being displayed

Appears when the MIN value is being displayed

Appears when the AVG value is being displayed

Appears when user calibration is being performed

Appears when the auto power-off function is enabled

Appears during rms value detection

Appears when SHIFT has been pressed

IM CA450-EN16

Symbol or Unit Description

Shows the main value Shows the input or output value A converted value is shown in SENSOR mode

Appears when the range has been exceeded

Appears when the battery voltage is low

Appears during current output

Appears in loop power supply mode

Appears in SPAN check mode

Appears when the SIMULATE operation is being performed

Appears in SENSOR mode

Indicates the main unit

Indicates the subunits Shows the MIN, MAX, and AVG recording time Shows the input voltage unit in SENSOR mode

Shows the subvalue Shows the MIN, MAX, and AVG recording time Shows the reference value during relative calculation

Shows the current sweep output or step output status Appears during slow linear output

Appears during fast linear output

Appears during slow step output

Appears during fast step output

Appears when the internal resistor for HART communication is on

17IM CA450-EN

4.3 Measuring Instructions

WARNING

Note

To avoid damaging the instrument and other equipment:

• Before you start measuring, make sure that the position of the function switch and position of the input terminals for connecting the test leads or lead cables are appropriate for the desired mode of measurement.

(Check that they are appropriate fo

• Before you turn the function switch, remove the test leads or lead cables from the circuit under measurement.

• Before you use this instrument or use its indications as a reference for further procedures, make sure that the instrument functions properly when used with a known power supply.

4.3.1 AC Voltage Measurement

1) Turn the function switch to the “ ” or “mV” position.

2) If you turned the function switch to “mV,” press SELECT. (“

3) Insert the test leads into the input terminals.

4) Connect the test leads to the circuit under measurement, and then read the value when it stabilizes.

” is displayed.)

4.3.2 DC Voltage Measurement

r the measurement category.)

Test leads

Black Red

1) Turn the function switch to the “ ” or “mV” position.

2) Insert the test leads into the input terminals.

3) Connect the test leads to the circuit under measurement, and then read the value when it stabilizes.

Test leads

Black Red

If the range setting is selected and the test leads are not connected to a circuit, the instrument will still display a value, but measurement will not be adversely affected.

IM CA450-EN18

+ 67 hidden pages

Yokogawa Yokogawa CA450 Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

Checking the Contents of the Package

Regarding Safe Use of This Product

Concernant l’usage en toute sécurité de ce produit

Contents

1. Overview

2. Operating Environment

3.2 Accuracy

4. Operation

4.1 Precautions before Measurement

4.2 Components

4.3 Measuring Instructions

4.3.1 AC Voltage Measurement

4.3.2 DC Voltage Measurement