YOKOGAWA CA450 User manual

IM CA450-EN
2nd Edition: Feb. 2011(YMI)
Store this manual in a safe place for future
reference.
CA450
Process Multimeter
User’s
Manual

■ Registered Trademarks
“HART” is a registered trademark of the HART Communication Foundation.
■ About This Manual
• Every effort has been made to ensure accuracy in the preparation of this manual.
However, should any errors or omissions come to the attention of the user, please contact
Yokogawa.
• The contents of this manual are subject to change without prior notice because of
improvement in performance or function.
• All rights reserved. No part of this manual may be reproduced in any from without
Yokogawa’s written permission.

1
Thank you for purchasing our CA450 Process Multimeter.
This user’s manual describes the specications and handling precaution for this Process
Multimeter.
Before using this Process Multimeter, thoroughly read this manual to get a clear understanding
on proper use.
Always observe the following instructions.
Failure to do so may impair the protection provided by the instrument and probes, and may
result in electrical shock or other dangers that may lead to serious injury or the loss of life.
Yokogawa is in no way liable for any damage resulting from the user’s mishandling of the
product.
Revision Information
1st Edition: Oct. 2010
2nd Edition: Feb. 2011
All Rights Reserved, Copyright © 2010,
Yokogawa Meters & Instruments Corporation

2
Regarding Safe Use of This Product
For safe use of this product, the following safety symbols are used on the
product and manual:
WARNING
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.
CAUTION
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.
Note
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.
Tip
This indicates supplemental information for explanations.
Danger! Handle with Care
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).

3
WARNING
■ 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.
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
EN61010-031), be sure to put the caps on the leads when you use them.
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.
Operating Environment
• Do not operate the instrument in an atmosphere where any ammable or explosive gas is
present.
• Avoid using the instrument if it has been exposed to rain or moisture or if your hands are
wet.
Disassembly
• No person, except personnel from Yokogawa, is authorized to disassemble this instrument.

4
Concernant l’usage en toute sécurité de ce produit
Symboles utilisés sur les appareils et dans le manuel d’instruction:
Avertissement
Indique un danger. Attire l’attention sur une utilisation quipourrait engendrer des
accidents susceptibles de provoquer des blessures qui peuvent éventuellement s’avérer
mortelles.
Attention
Indique un danger. Attire l’attention sur une utilisation qui pourrait engendrer une
blessure personnelle et/ou être préjudiciable au produit.
Remarque
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.
Conseil
Ce qui suit indique des informations supplémentaires pour les explications.
Danger ! Manipuler avec soin.
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).

5
Avertissement
■ 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.
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 test et des câbles de dérivation.
• 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).
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.
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.
Démontage
• Aucune personne, excepté le personnel de Yokogawa, n’est autorisée à démonter cet
instrument.

6
Contents
1. Overview............................................................................................................. 8
2. Operating Environment....................................................................................... 9
3. Specications .................................................................................................... 11
3.1 General Specications ........................................................................... 11
3.2 Accuracy ................................................................................................ 13
4. Operation .......................................................................................................... 16
4.1 Precautions before Measurement........................................................... 16
4.2 Components ........................................................................................... 17
4.3 Measuring Instructions........................................................................... 21
4.3.1 AC Voltage Measurement ( , ) ...................................... 22
4.3.2 DC Voltage Measurement ( V, mV) .............................. 22
4.3.3 Measuring Using Sensors (SENSOR) .....................................22
4.3.4 Resistance Measurement (Ω) ................................................... 23
4.3.5 Continuity Check ( ) ............................................................ 24
4.3.6 Diode Test ( )........................................................................ 24
4.3.7 DC Current Measurement ( ).............................................. 26
4.3.8 Loop Power Measurement ....................................................... 27
4.3.9 Frequency Measurement (Hz).................................................. 28
4.3.10 Auto Hold Function .................................................................29
4.3.11 Peak Hold Function.................................................................. 29
4.3.12 Relative Value Display (REL Δ/%).......................................... 31
4.3.13 MIN/MAX/AVG Function....................................................... 32
4.4 Output Instructions................................................................................. 33
4.4.1 Constant Current Output (SOURCE mode)............................. 34
4.4.2 Constant Current Output (SIMULATE mode)......................... 36
4.4.3 Current Sweep Output.............................................................. 37
4.4.4 Current Span Setting................................................................ 39
4.5 Auto Power-Off (Sleep) Function.......................................................... 39

7
4.6 Setup Function ....................................................................................... 40
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............................................... 42
4.6.4 Setting the Slow Step Time...................................................... 43
4.6.5 Returning the Settings to Their Factory Default Values .......... 43
4.7 Additional Power-on Functions ............................................................. 44
4.7.1 Making All the LCD Elements Appear.................................... 44
5. User Calibration Function................................................................................. 45
5.1 Calibrating Measurements ..................................................................... 45
5.1.1 Peak Hold Calibration.............................................................. 47
5.1.2 Loop Power Calibration........................................................... 47
5.2 Calibrating Output ................................................................................. 48
5.3 What to Check after Calibration ............................................................ 50
6. Communication
................................................................................................. 51
6.1 Cable Connection and Interface Specications ..................................... 51
6.2 Communication Commands................................................................... 52
6.3 Detailed Command Descriptions ........................................................... 54
6.4 List of Errors.......................................................................................... 72
6.5 Communication Command Validity Table............................................. 73
6.6 Status Byte Format................................................................................. 75
7. Replacing the Batteries and Fuses .................................................................... 76
7.1 Replacing the Batteries .......................................................................... 76
7.2 Replacing the Fuses ............................................................................... 77
8. Calibration and After-Sales Service.................................................................. 78
9. Disposing This Product and Serial Number...................................................... 78
10. Troubleshooting ................................................................................................ 80

8
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.