YOKOGAWA CA51 HANDY CAL User manual

User’s
Manual Model CA51, CA71
HANDY CAL
(Calibrator)
IM CA71-E
13th Edition: November 2021 (YMI)
IM CA71-E
Store this manual in an easily accessible
place for quick reference.

IM CA71-E i
13th Edition: November 2021 (YMI)
All Rights Reserved. Copyright © 2002, Yokogawa M&C Corporation,
2014, Yokogawa Meters & Instruments Corporation,
2017, Yokogawa Test & Measurement Corporation
Printed in Japan
Introduction
Thank you for purchasing the CA51, CA71 HANDY CAL Calibrator.
This User’s Manual explains the functions of the CA51 and CA71,
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 CA51 and CA71. Please read all manuals.
Manual No. Description
IM CA71-E: User's Manual (this manual)
IM 00C01C01-01Z1: Safety manual (European languages)
IM CA71-93Z2: Document for Korea
Contact information of Yokogawa o󰀩ces worldwide is provided on
the following sheet.
Document No. Description
PIM 113-01Z2: Inquiries List of worldwide contacts

ii IM CA71-E
■ Notes
● This manual exclusively describes the CA71, which is more
multifunctional than the CA51. The CA51 has no temperature
measurement and communication functions.
● The contents of this manual are subject to change without prior
notice for reasons of improvements in performance and/or
functionality.
● Every e󰀨ort has been made to ensure the accuracy of this manual.
If you notice any errors or have any questions, however, please
contact the vender from which you purchased the instrument.
● The content of this manual may not be transcribed or reproduced,
in part or in whole, without prior permission.
■ TrademarkAcknowledgments
● All other company and product names appearing in this document
are trademarks or registered trademarks of their respective holders.
■ RevisionInformation
February 2002: First Edition
December 2006: 2nd Edition
November 2007: 3rd Edition
January 2012: 4th Edition
July 2014: 5th Edition
April 2015: 6th Edition
April 2016: 7th Edition
August 2017: 8th Edition
October 2017: 9th Edition
November 2018: 10th Edition
March 2021: 11th Edition
May 2021: 12th Edition
November 2021: 13th Edition
Introduction

IM CA71-E iii
CheckingItemsinthePackage
After opening the package, check the product as follows before use.
If the delivered product is the wrong model, any item is missing,
or there are visible defects, contact the vendor from which you
purchased the product.
Main Unit
Check the model (specications) codes in the MODEL and SUFFIX
elds of the nameplate at the back of the instrument to ensure that
the instrument is exactly as specied in your purchase order.
• Model Codes
Model Specication
CA51 Basic model
CA71 Provided with temperature measurement and
communication functions
• NO. (Serial Number)
Refer to this serial number on the nameplate when contacting
the vendor about the instrument.

iv IM CA71-E
Checking Items in the Package
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.
Lead cables
for source
(98020)
Lead cables for
measurement
(RD031)
Carrying case
(93016)
Terminal adapter
(99021)
AA-size (LR6)
alkaline batteries
(four units)
User’s manual
(IM CA71-E)
OptionalAccessories
The products listed below are available as optional accessories.
If you purchased some of the optional accessories,
make sure the delivered package is complete with
the ordered items and they are free from any damage.
For technical and ordering inquiries concerning the accessories,
contact the vendor from which you purchased the instrument.

IM CA71-E v
Product PartNumber Remarks
AC adapter 94012 For 100 VAC
AC adapter 94013 For 120 VAC
AC adapter 94016 For 220 to 240 VAC
RJ sensor B9108WA For reference junction compensation
Accessories case B9108XA
Communication cable
(RS232)
91017 (For CA71 only)
Power cord of AC adapter:
94016-F (VDE standard), 94016-S (BS stanndard)
Make sure that the attached power cord meets the designated
standards of the country and area that you are using it in.
OptionalSpareParts
Product PartNumber Remarks
Lead cable for source 98020
Lead cable
for measurement
RD031
Carrying case 93016
Terminal adapter 99021 Used for temperature measurement
Fuse --- A1635EF (1 piece)
Accessories case
AC adapter
RJ sensor Communication cable
Checking Items in the Package

vi IM CA71-E
PrecautionsforSafeUseofthe
Instrument
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 specied in this manual,
the protection provided by the instrument may be impaired.
This manual is part of the product and contains important information.
Store this manual in a safe place close to the instrument so that you
can refer to it immediately.
Keep this manual until you dispose of the instrument.
YOKOGAWA assumes no liability for the customer’s failure to comply
with these requirements.
Thefollowingsymbolsareusedontheinstrumentandin
theUser’sManualtoensuresafeuse.
Danger! Handle with Care.
This symbol indicates that the operator must refer to
an explanation in the User’s Manual in order to avoid
the risk of injury or loss of life of personnel or damage to
the instrument.
This symbol indicates DC voltage/current.
This symbol indicates AC voltage/current.
This symbol indicates AC or DC voltage/current.
WARNING
Indicates that there is a possibility of serious personal injury or loss of life
if the operating procedure is not followed correctly and describes
the precautions for avoiding such injury or loss of life.
CAUTION
Indicates that there is a possibility of serious personal injury or damage to
the instrument if the operating procedure is not followed correctly and
describes the precautions for avoiding such injury or damage.

IM CA71-E vii
Precautions for Safe Use of the Instrument
NOTE
Draws attention to information essential for understanding the operation
and features.
TIP
Provides additional information to complement the present topic.
Damagetotheinstrumentorpersonalinjuryorevenlossoflife
mayresultfromelectricalshockorotherfactors.
Toavoidthis,followtheprecautionsbelow.
WARNING
•UsetheinstrumentOnlyforItsIntendedPurpose
This instrument is for generating (sourcing)/measuring voltage or current.
(This instrument is for generating and measuring resistance and
generating and measuring temperature using resistance or thermocouples.)
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.
•Useingases
Do not operate this instrument in areas where inammable or explosive
gases or vapor exists.
It is extremely hazardous to use the instrument under such environments.
•Defectsinprotectivefeatures
Do not operate this instrument if any defect seems to exist in such protective
features as fuses.
Before operating the instrument, make sure the protective features are free
from any defect.
•Externalconnection
When connecting the instrument to the object under test or an external
control circuit, or if you need to touch any external circuit, cut o󰀨 the power
to the circuit and make sure no voltage is being supplied.
•Fuses
In order to prevent a possible re, use a fuse with ratings (current, voltage,
and type) specied for the instrument. Do not short-circuit the fuse holder.

viii IM CA71-E
WARNING
•CorrectUseofLeadCables
Use the lead cables supplied by YOKOGAWA with this instrument.
Do not use lead cables that have deteriorated or are defective.
Check lead cables continuity.
Correctly use the lead cables for measurement (P/N: RD031) and
source (P/N: 98020) without mistaking one for the other.
For high-voltage measurement, always use the lead cable for measurement.
•DamagedSignalCable
If the signal cable (lead cables) is torn and the inner metal is exposed or
if a color di󰀨erent from the outer sheath appears, stop using the cable
immediately.
•DoNotRemovetheCasingorDisassemble
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. Some parts inside the instrument are extremely dangerous
because they use a high voltage.
When the instrument needs an internal inspection or calibration,
contact YOKOGAWA or the dealer from whom you purchased the instrument.
CAUTION
OperatingEnvironmentLimitations
This product is classied as Class A (for use in industrial environments).
Operation of this product in a residential area may cause radio interference,
in which case the user will be required to correct the interference.
Precautions for Safe Use of the Instrument

IM CA71-E ix
ForthesafeuseoftheoptionalACadapter,followtheprecautions
givenbelow.
WARNING
• Make sure that the rated power supply voltage of the instrument matches
the voltage of the power supply before turning on the power.
• To prevent the possibility electrical shock or re, be sure to use
the AC adapter and the power cord supplied by YOKOGAWA.
Additionally, do not use the AC adapter and the power cord supplied with
this instrument with another instrument.
• Do not place anything on the AC adapter or power cord, and prevent heat
sources from coming into contact with them.
• When unplugging the power cord from the outlet, be sure to hold the plug
and never pull the actual cord.
• Do not throw (dispose of ) the AC adapter in re or apply heat to it.
• Do not use it, where the cord is bundled (bent).
• If the power cord is damaged, contact your dealer.
Precautions for Safe Use of the Instrument