Yokogawa CA150 Operating Manual

User's Manual

IM CA150E

CA150 HANDY CAL

1st Edition: Octorber 2006

IM CA150E

Introduction

Thank you for purchasing the CA150 HANDY CAL. This User’s manual contains useful information regarding the instrument's functions and operating procedures, as well as precautions that should be observed during use. To ensure proper use of the instrument, read the manual thoroughly before operating it. After you have finished reading this manual, store it in the carrying case for quick reference whenever a question arises.

Notes

• The information contained in this manual is subject to change without notice. Furthermore, the actual display items may differ slightly from the ones 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.

• The warranty is included in this manual. Be sure to read the warranty to ensure you understand the terms, and then store it in a safe place. (The warranty cannot be reissued.)

Trademark Acknowledgments

● Company names and product names mentioned herein may be trademarks or registered trademarks of their respective companies.

Revision Information

1st Edition: Octorver 2006

Disk No. CA150E

1st Edition: Oct, 2006 (KP)

IM CA150E

Checking the Contents of the Package

After opening the package, check the following items before use. If the product is not the one you ordered, any item is missing, or there is a visible defect, contact the dealer from whom you purchased the instrument.

Main Unit

Check that the model name given on the name plate on the back panel of the instrument matches the one on your order.

• Model

Model

CA150

• Serial No.

Should you need to contact the dealer from whom you purchased the instrument, have your unit's serial number handy to give to the person.

Standard Accessories

The following standard accessories are supplied with the instrument. Make sure that all items are present and undamaged.

Source lead cables

(98020)

Measurement lead cables

(RD031)

Carrying case

(93026)

Fuse

(A1566EF)

Terminal adapter

(99022)

Ferrite core

(A1193MN) two

AA-size alkaline batteries (six) User’s Manual

(IM CA150E)

IM CA150E

Checking the Contents of the Package

Optional Accessories

The following optional accessories are available. Upon receiving these optional accessories, make sure that all the items you ordered have been supplied and are undamaged. If you have any questions regarding optional accessories, or if you wish to place an order, contact the dealer from whom you purchased the instrument.

Name Model Remarks

AC adapter 94010-D UL/CSA standard

94010-F VDE standard 94010-R SAA standard 94010-S BS standard

NiMH battery 94015 RJ sensor B9108WA For reference junction compensation Main body case 93027 With strap and accessories case Accessories case B9108XA

94010-H GB standard

Optional Spare Parts

Name Model Remarks

Source lead cables 98020 Lead Cable for Source Measurement lead cables RD031 Safety Test Lead Carrying case 93026 Terminal adapter 99022 Used for temperature measurement Fuse A1566EF Set of 10 fuses

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AC adapter Accessories case RJ sensor

Safety Precautions

When operating the instrument, strictly observe the precautions in this manual to ensure its correct and safe operation. If used other than as instructed in this manual, Yokogawa Meters & Instruments Corporation is not liable for any damage that may result.

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

Danger! Handle with Care.

This symbol indicates that the operator must refer to an explanation in the manual in order to avoid risk of injury or loss of life of personnel or damage to the instrument. This symbol indicates a direct current.

This symbol indicates a power source.

Warning

Indicates a hazard that may result in the loss of life or serious injury of the user unless the described instruction is abided by.

Caution

Indicates a hazard that may result in an injury to the user and/or physical damage to the product or other equipment unless the described instruction is abided by.

Note

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

Indicates additional information to complement the present topic.

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Safety Precautions

Be sure to comply with the following safety precautions. Failure to do so may result in loss of life or injury to personnel from such hazards as electrical shock, or damage to the instrument.

Warning

● Prohibition of Use in Gaseous Environments

Do not operate the instrument in the presence of inflammable and explosive gases or vapors. Operating the instrument in such an environment is extremely hazardous.

● Protection Feature Defects

Do not operate the instrument if a fuse or other protection feature is defective. Before commencing operation, make sure that protection features are free from defects.

● External Connections

When connecting the instrument to the object to be tested or an external control circuit, or if you need to touch any external circuit, turn off the power to the circuit and make sure that no voltage is generated.

● Fuses

To prevent a fire, be sure to use fuses with the specified ratings (voltage, current, and type). Do not short-circuit the fuse holder.

● Correct Use of Lead Cables

Be sure to correctly use the measurement lead cables (model: RD031) and source lead cables (model: 98020) without mistaking them.

● Removing the Casing

Removing the casing and disassembling or modifying the instrument is strictly prohibited. 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 Meters & Instruments Corporation or the dealer from whom you purchased the instrument.

To use the AC adapter (optional) safely, be sure to comply with the following precautions.

Warning

● Power Supply

Make sure that the rated power supply voltage of the instrument matches the voltage of the power supply before turning on the power.

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Introduction .....................................................................................1

Checking the Contents of the Package........................................ 2

Safety Precautions ..........................................................................4

1. Product Outline ........................................................ 1-1

1.1 Product Outline .................................................................. 1-1

2. Names and Functions of Parts ............................... 2-1

3. Before Starting Source or Measurement ............... 3-1

3.1 Usage Precautions ............................................................. 3-1

3.2 Connecting a Power Supply ............................................. 3-3

3.2.1 Using Alkaline Batteries ............................................. 3-3

3.2.2 Using an AC Adapter ................................................. 3-4

3.2.3 Using an NiMH Battery Pack ..................................... 3-5

3.2.4 Fuse ........................................................................... 3-8

3.3 Turning the Power On and Off .......................................... 3-9

3.3.1 Turning the Power On and Off ................................... 3-9

3.3.2 Auto Power Off .......................................................... 3-9

3.3.3 Turning the Backlight On and Off .............................. 3-9

3.4 Operating Environment ................................................... 3-10

4. Source ................................................................... 4-1

4.1 Connecting the Source Terminals .................................... 4-2

4.2 Source DC Voltage (DCV) Signals .................................... 4-3

4.3 Source DC Current (DCA) Signals .................................... 4-4

4.3.1 Generating DC Current Signals ................................. 4-4

4.3.2 4-20 mA Function ...................................................... 4-5

4.3.3 20 mA SINK Function ................................................ 4-6

4.4 Source Resistance () Signals ......................................... 4-8

4.5 Source Thermocouple (TC) Signals ............................... 4-10

4.5.1 Source Thermocouple (TC) Signals ........................ 4-10

4.5.2 Using an External RJ Sensor .................................. 4-11

4.5.3 Using the Built-in RJ Sensor .................................... 4-12

4.6 Source Resistance Temperature Detector (RTD)

Signals .............................................................................. 4-13

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Contents

4.7 Source Frequency and Pulse (PULSE) Signals ............ 4-15

4.7.1 Source a Continuous Pulse Train ............................ 4-16

4.7.2 Source a Pulse Cycle .............................................. 4-17

4.8 Divided Output (n/m) Function ....................................... 4-18

4.9 Sweep Output Functions ................................................. 4-19

4.9.1 Step Sweep Function .............................................. 4-20

4.9.2 Linear Sweep Function ............................................ 4-22

4.9.3 Program Sweep Function ........................................ 4-24

4.10 Temperature Monitor Function ....................................... 4-26

5. Measurement ........................................................... 5-1

5.1 Connecting the Measurement Terminals ......................... 5-2

5.2 Measuring DC Voltage (DCV) ............................................ 5-4

5.3 Measuring DC Current (DCA) ............................................ 5-4

5.3.1 Measuring DC Current ............................................... 5-4

5.3.2 Measuring 24V LOOP ............................................... 5-5

5.4 Measuring Thermocouple (TC) ......................................... 5-6

5.5 Measuring Resistance () ................................................. 5-7

5.6 Measuring Resistance Temperature Detector (RTD) ...... 5-8

5.7 Measuring Frequency (FREQ) and Pulse ........................ 5-9

5.7.1 Measuring Frequency (FREQ) and Pulse ................. 5-9

5.7.2 Measuring Contact Input ......................................... 5-10

6. Memory Function ..................................................... 6-1

6.1 Data Memory Items ............................................................ 6-2

6.1.1 Saving ........................................................................ 6-3

6.1.2 Replacing and Saving ................................................ 6-3

6.1.3 Clearing Memory ....................................................... 6-4

6.1.4 Displaying (Confirming) Saved Data ......................... 6-5

6.2 Setting Memory Items ........................................................ 6-6

6.2.1 Saving ........................................................................ 6-6

6.2.2 Replacing and Saving ................................................ 6-6

6.2.3 Clearing Memory ....................................................... 6-7

6.2.4 Loading ...................................................................... 6-8

7. Setting Mode ............................................................ 7-1

7.1 Source ................................................................................. 7-2

7.2 Measure .............................................................................. 7-3

7.3 Configuration ..................................................................... 7-4

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Contents

8. Communication Function ....................................... 8-1

8.1 Cable Connection and Interface Specifications .............. 8-1

8.2 Communication Command List ........................................ 8-2

8.3 Detailed Description of Commands ................................. 8-3

8.4 Error Code List ................................................................. 8-12

8.5 Table of Valid Communication Commands ................... 8-13

8.6 Status Byte Format .......................................................... 8-15

8.7 Output Format of Printer Mode ....................................... 8-16

9. Calibration Mode ..................................................... 9-1

9.1 Calibration of Source Functions ...................................... 9-2

9.2 Calibration of Measurement Functions ........................... 9-5

9.3 Verification after Calibration ............................................. 9-8

9.4 Calibration of Temperature Ranges ................................. 9-8

10. Troubleshooting .................................................... 10-1

11. Specifications ........................................................ 11-1

Appendix 1 Using a Cold Junction

Compensator .................................... App.1-1

Appendix 2 Block Diagram.................................. App.2-1

Appendix 3 Installing Ferrite Core...................... App.3-1

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1. Product Outline

1.1 Product Outline

Generation (SOURCE)

Function Range

DC Voltage (DCV) 100 mV, 1 V, 10 V, 30 V DC Current (DCA) 20 mA, 20 mA SINK, 4-20 mA Resistance () 500 , 5 k, 50 k Thermocouple (TC) K, E, J, T, N, L, U, R, S, B Resistance temperature detector (RTD) Pt100, JPt100 Frequency and pulse (PULSE) CPM, 100 Hz, 1000 Hz, 10 kHz,

50 kHz

Measurement (MEASURE)

Function Range

DC Voltage (DCV) 35 V, 5 V, 500 mV DC Current (DCA) 100 mA, 20 mA Resistance () 50 k, 5 k, 500  Thermocouple (TC) K, E, J, T, N, L, U, R, S, B Resistance temperature detector (RTD) Pt100, JPt100 Frequency and pulse (FREQ) 100 Hz, 1000 Hz, 10 kHz, CPM, CPH

24V LOOP (DCA)

Product Outline

Other

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Divided output (n/m) function Sweep output functions

Step sweep function Linear sweep function Program sweep function

Temperature monitor function

Averaging (measurement)

1-1

2. Names and Functions of Parts

Input terminals

Fuse holder (FUSE)

Measure

keys

Output terminals

Names and Functions of Parts

LCD Screen

Output value setting keys

Source keys

Keys

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Battery holder

RJ sensor connector

RS232

connector

AC adapter

jack

2-1

Common Keys

POWER Turns on/off the power.

LIGHT Turns on/off the backlight of the LCD screen. (It turns off automatically if

approximately 10 minutes elapse without a key being pressed.)

SAVE Saves measurement values and setting values.

LOAD Displays measurement values and loads setting values.

ENTER Confirms the selected item or displays the temperature monitor.

CHARGE Starts/stops charging of the NiMH battery.

Output Value Setting Keys

Output value setting keys

2-2

Sets the source output value. Each (up) and (down) key corresponds to a digit, and increments or decrements the value by one count. (The ▲ and ▼ marks are used indicate these keys in this manual.) If you attempt to increment or decrement the value 9 or 0, the digit moves up or down one place.

key: Sets the memory number for the memory function. n key: Sets the n (numerator side) for divided output (n/m). m key: Sets the m (denominator side) for divided output (n/m).

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SOURCE Keys

MEASURE Keys

FUNCTION Changes the source function. DCV → DCA → 

RANGE Changes the range for each function.

SOURCE ON/OFF Turns on/off the source (setting value output).

n/m Selects/cancels divided output (n/m) mode.

+ ←→ - Toggles the polarity of output.

SWEEP SET Selects step sweep, linear sweep, or program

PULSE SET Selects the mode for generating a pulse and

CLEAR • Restores the setting value to its default.

FUNCTION Changes the source function. DCV → DCA → 

RANGE Changes the range for each function.

MEASURE ON/OFF

24V LOOP Selects/cancels the loop test (24 V output).

HOLD • Holds the display value (measurement value).

→ TC → RTD → PULSE → (DCV)

(The mark is lit for the selected function.)

sweep.

frequency signals. Refer to "4.7 Generating

Frequency and Pulse (PULSE) Signals."

• Goes back one level in setting mode.

• Clears the memory for the memory function.

→ TC → RTD → FREQ → (DCV)

(The mark is lit for the selected function.)

OFF turns off the measurement value indication

and ON turns on the measurement value

indication.

• Starts/Stops CPM and CPH measurement.

• Starts communication data output. (When

communication of the setting mode is set to

printer mode.)

Names and Functions of Parts

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LCD Screen

1 Indicates the function selected with the FUNCTION key of MEASURE. 2 Indicates the measurement value (top row: seven segments).

MEASURE and the unit are also displayed. 3 Indicates the function selected with the FUNCTION key of SOURCE. 4 Indicates the source setting value (bottom row: seven segments).

SOURCE and the unit are also displayed.

2-4

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SOURCE: OFF lights when output is off or the protection circuit

has been activated. ON lights when output is on.

Indicates hold.

Indicates that the 4-20 mA range is selected for the source.

Flashes while communication data is being output.

(When communication of the setting mode is set to printer mode.)

Indicates that 24 V DC is being output for a loop test.

Indicates reading of the memory function.

Lights when the memory function or program sweep function is in use.

(Indicates the memory number.)

Lights when the sweep function is in use.

Lights when the divided output (n/m) function or step sweep

function is in use.

Indicates that contact input is selected during pulse measurement.

Lights or flashes during offset or full scale adjustment in

calibration mode.

Indicates the battery level of the alkaline batteries or NiMH battery.

Indicates that the NiMH battery pack is charging.

Indicates the type of thermocouple.

Lights during an RJ compensation calculation.

Lights when the PT100 or JPT100 standard is selected for the

RTD function.

Lights when IPTS-68 (temperature scale standard) is selected for

temperature source and measurement (TC, RTD).

Names and Functions of Parts

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2-5

Digital Display of Alphanumeric Characters

Since the LCD screen of the instrument has seven segments, alphanumeric characters are displayed as shown below. (Some of the characters are not used.)

A B C

c D

F G

H h

I i

J K

L M

O P

R S T U u V W

X Y

2-6

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3. Before Starting Source or Measurement

3.1 Usage Precautions

Safety Precautions

● Before using the instrument, be sure to thoroughly read "Safety Precautions" on pages 4 and 5.

● Do not remove the casing from the instrument. 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 Meters & Instruments Corporation or the dealer from whom you purchased the instrument.

● In the case of an abnormality If the instrument begins to emit smoke, give off an unusual odor, or show any other signs of an abnormality, immediately turn off the power switch. If you are using an AC adapter, unplug the power cord from the outlet. Also turn off any object under test that is connected to the input terminals.

● AC adapter and power cord Use the designated AC adapter. 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. If the power cord is damaged, contact your dealer.

General Handling Precautions

● When carrying the instrument Turn off the power to the object under test. Turn off the power to the instrument and unplug the power cord from the outlet if you are using an AC adapter. Then, disconnect all lead cables from the instrument. When carrying the instrument, use the carrying case.

● Keep input terminals away from electrically charged articles as they may damage the internal circuitry.

● Do not allow volatile chemicals to come into contact with the casing or operation panel. Also, do not allow the instrument to come into contact with any rubber or vinyl products for prolonged periods. Since the operation panel is made of thermoplastic resin, be careful not to let it come into contact with any heat sources such as a soldering iron.

● Before cleaning the case and operation panel, make sure that the power cord is unplugged from the outlet if you are using an AC adapter. Dampen a clean soft cloth with water and gently wipe the surface of the casing and panel. Water getting inside the instrument may result in a failure.

● If the AC adapter will not be used for a prolonged period, unplug the power cord from the outlet.

● For precautions on handling dry batteries, refer to "3.2.1 Using Alkaline Batteries."

● Do not use the instrument with the cover for the battery holder left open.

Before Starting Generation or Measurement

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3-1

Chapter 3.1 Usage Precautions

Operating Environment

Use the instrument in locations that meet the following conditions:

• Ambient temperature and humidity Ambient temperature: 0 to 40C Ambient humidity: 20 to 80% RH (no condensation)

Do not use the instrument in the following locations:

• In direct sunlight or near heat sources

• Where there is a lot of mechanical vibration

• Near noise sources such as high-voltage equipment or power lines

• Near strong magnetic field sources

• Where an excessive amount of greasy fumes, steam, dust, or corrosive gases are present

• In an unstable place

• Where, for example, fire and explosions caused by inflammable gases and the like are possible

Note

• When you require high source and measurement accuracy, use the instrument under the following conditions: Ambient temperature: 23 5C Ambient humidity: 20 to 80% RH (no condensation) When using the instrument in an ambient temperature range of 0 to 18C or 28 to 40C, add the temperature coefficient specified in "11. Specifications" to the accuracy.

• When using the instrument in ambient humidity of 30% or less, use an antistatic mat to prevent static electricity.

• Condensation may occur if the instrument is moved from a location of low temperature and humidity to a location of high temperature and humidity, or if the temperature otherwise changes suddenly. In such a case, leave the instrument for at least one hour to ensure it is free from condensation before starting operation.

3-2

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Chapter 3.2 Connecting a Power Supply

3.2 Connecting a Power Supply

In addition to AA-size alkaline batteries (six), the instrument can use two other types of power supply.

• AA-size (LR6) alkaline batteries (six): 1.5 V

• AC adapter (optional)

• NiMH (nickel hydrogen) battery (optional): Model: 94015

3.2.1 Using Alkaline Batteries

Installing and Replacing Batteries

1 Make sure that the power switch of the instrument is turned off and the

lead cables and AC adapter are not connected.

2 Slide up the lock switch on the left side of the instrument and remove the

alkaline battery holder. 3 Insert the six alkaline batteries into the holder. 4 Insert the holder into the opening on the instrument. 5 Slide down the lock switch to fix the holder in place. (The lock switch

indication changes to "䉭 FREE.")

Caution

Insert the batteries with their positive and negative electrodes positioned correctly as indicated on the holder.

Before Starting Generation or Measurement

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Battery Level Indication

Indicates that the battery voltage is normal.

Indicates that the battery level is above 50%. (Lit)

Replace the batteries when this mark begins flashing.

Lock switch

3-3

Chapter 3.2 Connecting a Power Supply

3.2.2 Using an AC Adapter

Warning

• Use the power cord supplied by Yokogawa Meters & Instruments Corporation for use with the instrument.

• Make sure that the power supply voltage matches the ratedsupply voltage before connecting the power cord.

Ratings

AC adapter power supply ratings (Model: 94010) Rated supply voltage 100 to 240 V AC Allowable supply voltage range 90 to 264 V AC Rated supply frequency 50/60 Hz Allowable supply voltage frequency range 47 to 63 Hz Maximum input current 1.4 A Output voltage rating of AC adapter 12.0 V DC Maximum output current rating of AC adapter 3.0 A

3-4

1 Make sure that the power switch of the instrument is turned off. 2 Connect the AC adapter to the AC adapter jack of the instrument. 3 Connect the plug of the power cord to the power connector of the AC

adapter.

4 Connect the other plug of the power cord to an outlet that meets the

ratings described above.

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Chapter 3.2 Connecting a Power Supply

3.2.3 Using an NiMH Battery Pack

Charging type NiMH (nickel hydrogen) battery (optional): Model: 94015 Specifications Voltage: 7.2 V

Capacity: 2100 mAh Number of times can be charged (life cycle): Approx. 300 times (varies depending on the operating environment)

Be sure to observe the following warnings on handling the NiMH battery.

Warning

• The electrolyte solution contained in the NiMH battery pack is alkaline. If it comes into contact with any clothing or skin due to a leakage from or rupture in the battery pack, the clothing or skin may be damaged. In particular, if the solution gets into an eye, it may cause loss of eyesight. In such a case, do not rub the affected eye, but thoroughly wash it immediately with clean water. Then see a doctor quickly for treatment.

• When replacing the NiMH battery pack, always turn off the power switch of the instrument and disconnect the AC adapter power cord from the outlet to avoid possible danger such as a short in the electric circuit or electrical shock.

• Do not use any battery pack other than Yokogawa Meters and Instruments Corporation's NiMH battery pack (model: 94015).

• Do not leave the NiMH battery pack in strong direct sunlight, inside a vehicle under the hot sun, or near a fire, otherwise it may result in a solution leakage or deterioration in the performance and/or life.

• Do not disassemble or modify the NiMH battery pack, otherwise the protective features of the battery pack may be damaged, resulting in heating up or rupture.

• Do not short the NiMH battery as this may cause burns due to the battery pack heating up.

• Do not dispose of the battery pack in a fire or apply heat to it, otherwise there is a risk that it will rupture or its electrolyte solution will scatter.

• Do not apply excessive shock to the battery pack, for example, by throwing it. Doing so may cause solution leakage, battery pack heating, or rupture.

• Do not use a defective battery pack, such as one leaking solution, deformed, discolored, or showing any other abnormality.

•Avoid any metal coming into contact with the battery pack when carrying it, as there is a danger of a short.

• Do not immerse the battery pack in water or make it wet. Otherwise, it may heat up or rust, as well as lead to a loss of functions.

Before Starting Generation or Measurement

If the battery pack will not be used for a prolonged period, remove it from the instrument and store it in the following environment.

Storage period of 1 year or less: Temperature of -20 to 35C (in locations

with low humidity)

Storage period of 3 months or less: Temperature of -20 to 45C (in locations

with low humidity)

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Chapter 3.2 Connecting a Power Supply

Installing the NiMH Battery

1 Make sure that the power switch of the instrument is turned off and the

lead cables and AC adapter are not connected.

2 If alkaline batteries are in use, slide up the lock switch on the left side of the

instrument and remove the alkaline battery holder before installing the NiMH battery.

3 Insert the holder into the opening on the instrument.

Slide the holder into the opening so that the connector is aligned properly.

4 Slide down the lock switch to fix the holder in place. (The lock switch

indication changes to "䉭 FREE.")

Lock switch

3-6

NiMH battery

Battery Level Indication

Indicates that the battery voltage is normal.

Indicates that the battery level is above 50%. (Lit)

Charge the battery when this mark begins flashing.

The battery takes approximately 6 hours to fully charge from the flashing state.

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Chapter 3.2 Connecting a Power Supply

● Charging the NiMH Battery For safety reasons, the NiMH battery is not sufficiently charged at the time of shipment. Fully charge the NiMH battery prior to use. Use the instrument and AC adapter for charging.

Warning

Be sure to use the CA150 to charge the NiMH battery. Charge the NiMH battery in an environment with a temperature within the range of 10 to 35C. Charging the battery at a temperature that is not in the range above may result in an insufficient charge, solution leakage, or heating up.

● Charging Procedure

1 Connect the AC adapter to the instrument when the NiMH battery pack is

installed in accordance with the installation procedure.

2 Press the POWER key to turn on the power. Press the CHARGE key to

start charging. (The CHARGE mark appears.)

3 The CHARGE mark disappears when charging is complete.

(To stop charging, press the CHARGE key again.)

Caution

• Performing generation or measurement is possible during charging, but accuracy is affected by the heat generated by charging. To ensure accurate measurement (generation), use of the charging function at the same time is not recommended.

• For details on the effect of heat generation on accuracy (adding of temperature coefficient), refer to the specifications.

• Performing generation and measurement after charging is complete (after at least 2 hours have elapsed) is recommended.

● Usage Guidelines

Usage time differs depending on the source function.

Before Starting Generation or Measurement

Source output 5 V DC/10 k or more Approx. 10 hours (Measurement: ON, 24V LOOP: OFF)

Tip

Charging NiMH Battery

Depending on the use condition of the main body of the instrument, charging may aborted.

E.g.) When outputting 24 V DC (loop), press the CHARGE key again if the load current is high. If charging is aborted again, lower the load current and try charging again.

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Chapter 3.2 Connecting a Power Supply

● NiMH Battery Life

The battery can be charged approximately 300 times. (This number varies depending on the operating environment.) The life of the battery is over when the low battery level indication appears only a short time after the battery is fully charged. In such a case, replace the NiMH battery pack with a new one.

3.2.4 Fuse

Caution

Be sure to use the designated fuse.

A fuse for current input protection is inserted in the side (fuse holder) of the instrument. Part number: A1566EF, Rating: 125 mA/250 V FAST

Procedure for Replacing the Fuse

When replacing the fuse, turn the M part of the fuse holder with a flat-blade screwdriver and remove the holder. Then, replace the fuse, reinsert the fuse holder, and turn the fuse holder with the screwdriver.

3-8

Fuse holder Fuse

(A1566EF)

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Chapter 3.3 Turning the Power On and Off

3.3 Turning the Power On and Off

3.3.1 Turning the Power On and Off

When the power is off, press the POWER key to turn the power on. Press the POWER key again to turn the power off.

Note

Turn the power off before disconnecting the AC adapter from the power supply.

Remove the plug of the AC adapter from the instrument when running the instrument on batteries.

3.3.2 Auto Power Off

When running the instrument on batteries, the LCD screen flashes (alarm) if approximately 9 minutes 30 seconds elapse without a key being pressed. If no operation is performed within approximately 30 seconds after that, the power turns off automatically. (The auto power off function is set to ON at the time of shipment.) To continue using the instrument after the screen begins flashing, press any key other than the POWER key so that the screen stops flashing and lights.

Tip

If the AC adapter is in use or the CPH range is selected for pulse measurement, the instrument is not turned off automatically regardless of the auto power off setting.

Before Starting Generation or Measurement

For details on canceling the auto power off function, refer to "7. Setting Mode."

3.3.3 Turning the Backlight On and Off

The backlight of the LCD screen can be turned on. This makes it easy to see the screen when working in dark places.

Press the LIGHT key to turn the backlight on. Press the LIGHT key again to turn the backlight off.

Note

The backlight turns off automatically if approximately 10 minutes elapse without a key being pressed. To continue using the backlight, press any key other than the POWER key.

Using the backlight when the instrument is running on batteries reduces the lifespan of the batteries.

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Chapter 3.4 Opereting Environment

3.4 Opereting Environment

Operating Environment

Ambient Temperature and Humidity

Use the CA150 in the following environment:

• Ambient temperature: 0 to 40C

• Ambient humidity: 20 to 80 % RH (no condesation)

Operating Altitude

2000 m max. above sea level.

Location

Indoors

Measurement Category (CAT.)

The measurement category of the CA150 is I.

Warning

Do not use the CA150 for measurements in locations falling under Measurement Categories II, III, and IV.

Measurement Category

Measurement Category Description Remarks

I CAT. I For measurement performed

on circuits not directly connected to MAINS.

II CAT. II For measurement performed Appliances, portable

on circuits directly connected equipments, etc. to the low voltage installation.

III CAT. III For measurement performed Distribution board,

IV CAT. IV For measurement performed Overhead wire,

in the building installation. circuit breaker, etc.

at the source of low-voltage cable systems, etc. installation.

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IM CA150E

Chapter 3.4 Opereting Environment

Internal Wiring

Entrance Cable

CAT. IV

Distribution Board

Fixed Equipment, etc.

CAT. I

CAT. III

CAT. II

Equipment

Outlet

Pollution Degree

Pollution Degree applies to the degree of adhesion of a solid, liquid, or gas which deteriorates withstand voltage or surface resistivity. The pollution degree of the CA150 in the operating environment is 2. Pollution Degree 2 applies to normal indoor atmospheres. Normally, only non-conductive pollution is emitted. However, a temporary electrical conduction may occur depending on the concentration.

Note

• For accurate source and measurement, operate the CA150 in the 23 ± 5C temperature range and 55 ± 10% RH.

• Condensation may occur if the CA150 is moved to another place where the ambient temperature and humidity are higher, or if the temperature changes rapidly. If this happens, let the CA150 adjust to the new environment for at least two hours before using it.

Before Starting Generation or Measurement

Strage Location

• We recommend you store the CA150 in an environment with a temperature between 0 and 50C and a relative humidity between 5 to 85% RH.

• When storing the CA150, avoid a location that is:

• exposed to direct sunlight,

• 60C or higher,

• 90% RH or higher,

• close to a heat source,

• exposed to servere vibrations,

• exposed to corrosive or explosive gas,

• exposed to excessive amount of soot, dust, salt, and iron, or

• exposed to water, oil, or chemicals.

IM CA150E

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