YOKOGAWA HANDY CAL CA51 User manual

User’s
Manual Model CA51/71
HANDY CAL Calibrators
IM CA71-E
1st Edition: Feb. 2002
IM CA71-E

IM CA71-E i
Disk No. CA71-E
1st Edition: Feb.2002
All Rights Reserved. Copyright © 2002, Yokogawa M&C Corporation
Introduction
Thank you for purchasing the CA51/71 HANDY CAL Calibrator. This
User’s Manual explains the functions of the CA51/71, as well as the
operating methods and handling precautions. Before using the CA51/
71, read this manual thoroughly to ensure correct use of the instru-
ment. When you have finished reading this manual, store it in the car-
rying case for future reference.
■Notes
●This manual exclusively describes the CA71, which is more multifunc-
tional 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 effort 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

ii IM CA71-E
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 (specifications) codes in the MODEL and SUFFIX
fields of the nameplate at the back of the instrument to ensure that the
instrument is exactly as specified in your purchase order.
• Model Codes
Model Specification
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 ven-
dor about the instrument.

IM CA71-E iii
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.
Lead cables
for source
(98020)
Lead cables for
measurement
(RD031)
Carrying case
(93016) Fuse
(A1501EF)
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 accesso-
ries, contact the vendor from which you purchased the instrument.
Product Part Number Remarks
AC adapter A1020UP For 100 V AC
AC adapter A1022UP For 120 V AC
AC adapter B9108WB For 220 to 240 V AC
RJ sensor B9108WA For reference junction
compensation
Accessories case B9108XA
Communication cable (RS232) 91017 (For CA71 only)

iv IM CA71-E
Checking Items in the Package
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 A1501EF 10 units as a kit
Accessories case
AC adapter
RJ sensor Communication cable

IM CA71-E v
Precautions for Safe Use of the Instrument
For the correct and safe use of the instrument, be sure to follow the
cautionary notes stated in this manual whenever handling the instru-
ment. Yokogawa M&C Corporation shall not be held liable for any
damage resulting from use of the instrument in a manner other than
prescribed in the cautionary notes.
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 precau-
tions 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.
NOTE
Draws attention to information essential for understanding the operation and
features.

vi IM CA71-E
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 in gases
Do not operate this instrument in areas where inflammable 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 protec-
tive features as fuses. Before operating the instrument, make sure the pro-
tective features are free from any defect.
●External connection
When connecting the instrument to the object under test or an external con-
trol circuit, or if you need to touch any external circuit, cut off the power to
the circuit and make sure no voltage is being supplied.
●Fuses
In order to prevent a possible fire, use a fuse with ratings (current, voltage,
and type) specified for the instrument. Do not short-circuit the fuse holder.
●Correctly use the lead cables for measurement (P/N: RD031) and source (P/
N: 98020) without mistaking one for the other. For high-voltage measure-
ment, always use the lead cable for measurement.
●Opening of the case
No person other than our service personnel is allowed to open the case since
the instrument contains high-voltage parts.
For the safe use of the optional AC adapter, follow the precautions
given below.
WARNING
●Power supply
Before turning on the instrument, always make sure the voltage being sup-
plied matches the rated supply voltage of the instrument.
Precautions for Safe Use of the Instrument

IM CA71-E vii
1
Contents
Introduction .................................................................................................. i
Checking Items in the Package....................................................................ii
Precautions for Safe Use of the Instrument ................................................ v
1. Functions.................................................................................... 1-1
2. Names and Functions of Parts ................................................. 2-1
3. Before Starting Source/Measurement...................................... 3-1
4. Source......................................................................................... 4-1
4.1 Connecting Cables to Terminals ................................................... 4-2
4.2 Sourcing DC Voltage, DC Current or SINK Current Signal........... 4-3
4.2.1 Sourcing DC Voltage or DC Current Signal ................... 4-3
4.2.2 4–20 mA Function ........................................................... 4-4
4.2.3 20 mA SINK Function ...................................................... 4-5
4.2.4 Using As 24-V Loop Power Supply ................................. 4-6
4.3 Sourcing Resistance or RTD Signal ............................................. 4-7
4.4 Sourcing Thermocouple (TC) Signals........................................... 4-9
4.4.1 When RJ Sensor Is Used (Making Use of Reference
Junction Compensation) ................................................. 4-9
4.4.2 When No RJ Sensor Is Used ........................................ 4-11
4.5 Sourcing Pulse Signals............................................................... 4-12
4.5.1 Sourcing a Continuous Pulse Train ............................... 4-12
4.5.2 Sourcing the Preset Number of Pulses (Pulse Cycle)... 4-14
4.5.3 Using the Contact Output.............................................. 4-16
4.6 Divided Output Function (n/m) .................................................... 4-18
4.7 Sweep Function .......................................................................... 4-20
4.8 Auto Step Function ..................................................................... 4-20
4.9 Temperature Monitor Function .................................................... 4-20
5. Measurement.............................................................................. 5-1
5.1 Connecting Cables to Terminals ................................................... 5-2
5.2 Measuring 300 V AC-range Voltage, DC Voltage, AC Voltage or DC
Current.......................................................................................... 5-4
5.2.1 Measuring 300 V AC-range Voltage................................ 5-4
5.2.2 Measuring DC or AC Voltage .......................................... 5-4
5.2.3 Measuring DC Current .................................................... 5-4
5.3 Measuring Resistance or RTD (CA71 only) Signal....................... 5-6
2
3
4
5
6
7
8
9
10
11
12

viii IM CA71-E
Contents
5.4 Measuring Temperature with Thermocouple (TC) - CA71 only - .. 5-7
5.5 Measuring Frequency or Pulses ................................................... 5-8
5.5.1 Operating the Calibrator for Frequency Measurement.... 5-8
5.5.2
Operating the Calibrator for Measuring Number of Pulses .. 5-8
6. Memory Functions ..................................................................... 6-1
6.1 Saving Data into Memory ............................................................. 6-2
6.1.1 Saving Data in the Order of Memory Numbers ............... 6-2
6.1.2 Saving Data by Selecting Desired Memory Number....... 6-4
6.1.3 Overwriting Data in Memory............................................ 6-4
6.2 Reading Data from Memory.......................................................... 6-5
6.3 Clearing Data in Memory .............................................................. 6-6
6.3.1 Clearing Data by Selecting Desired Memory Number .... 6-6
6.3.2 Clearing All In-Memory Data Globally ............................. 6-7
6.4 Sending Out Data from Memory - CA71 only - ............................. 6-7
7. Functions Provided by DIP Switch........................................... 7-1
7.1 Sweep Function ............................................................................ 7-2
7.2 Auto Step Function ....................................................................... 7-4
7.3 Selecting the INT RJ Function ...................................................... 7-6
7.4 Selecting the IPTS-68 Function .................................................... 7-6
7.5 Switch Not Used ........................................................................... 7-7
7.6 Setting the Temp Switch ............................................................... 7-7
7.7
Selecting the Contact In Function (Contact Input for Pulse Measurement) .... 7-7
7.8 Disabling the Automatic Power-off Feature .................................. 7-7
8. Communication Function - CA71 only -................................... 8-1
8.1 Cables Connection and Interface Specifications .......................... 8-1
8.2 Setting the Mode........................................................................... 8-2
8.3 Types of Mode .............................................................................. 8-2
8.4 Data Format.................................................................................. 8-3
8.5 Data Structure............................................................................... 8-3
8.6 Commands ................................................................................... 8-4
8.7 Detailed Description of Commands .............................................. 8-5
9. Troubleshooting......................................................................... 9-1

IM CA71-E ix
Contents
10. Method of Calibrator Adjustment ........................................... 10-1
10.1 Calibration Standard Selection and Environmental Requirements.. 10-1
10.2 Adjusting Source Functions ........................................................ 10-3
10.3 Adjusting Measurement Functions ............................................. 10-6
10.3.1 Adjusting DC Voltage and DC Current Ranges............. 10-6
10.3.2 Adjusting AC Voltage and Resistance (400 Ω) Ranges 10-8
10.4
Notes on the Adjustment of Temperature Ranges - CAL71 only - ... 10-9
10.5 Post-adjustment Verification ....................................................... 10-9
11. Using Accessories ................................................................... 11-1
12. Specifications........................................................................... 12-1