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User's

Manual

Safety Precautions

The handling precautions, component names, and specifications are covered in the separate Getting 

Started Guide (IM CA310-02EN).

Be sure to read the Getting Started Guide before using this instrument.

Basic Setup

1. 

Turn the instrument on, and set the rotary switch to 

SETTING

.

2. 

Use the left-most up and down keys to select the setting and the right-most up and down keys to 

switch the options.

3. 

Press OUTPUT ON/OFF to confirm the setting.

 

POWER

Selects the setting Selects an option

Confirms the settings

Setting

Auto power-off

Backlight

Sweep time

Initialization of 

span settings

Initialization of 

settings

Options

ON

*

/OFF

ON/OFF

*

/TIMER

15s

*

/30s/45s/60s

Display

*: Default value

TYPE

Auto power-off

  If this is set to ON when the instrument is running on batteries, the power automatically turns off 

if you do not operate the instrument for approx. 20 minutes. This is invalid when the instrument is 

running off of the AC adapter.

Backlight

  Turns the backlight on and off. If set to Timer, the backlight turns on for approx. 2 minutes every 

time you operate a key.

Sweep time

  When sweeping in steps, set the output duration of each step. When sweeping linearly, set the 

output duration for the value to change from 0% to 100% (or 100% to 0%).

Initialization of Span Settings

  Initializes the span settings.

Initialization of Settings

  Initializes settings.

Measurement

1. 

Set the CA330’s measure/source switch to 

MEASURE

.

2. 

Follow the instructions in the Getting Started Guide to connect the CA330 to the device to be 

measured using the included lead cable.

3. 

Use the rotary switch to set the range.

4. 

If you set the range to EXTRA, press 

TYPE

 several times to select the 

sensor.

  Select a sensor from Cu100Ω, Cu50Ω, PT50, PT50G, and PT100G.

 

If you set the range to PT100, press 

TYPE

 to select the 

sensor coefficient.

  Select a coefficient from IEC(3851), 3850, JPT100(3916), and 3926.

 

If you set the range to Ω, press 

TYPE

 to select 3000Ω or 500Ω.

5. 

Press the left-most ▼ key to set the wiring system to 2W (two-wire), 3W (three-wire), or 4W 

(four-wire).

Sourcing

1. 

Set the CA330’s measure/source switch to 

SOURCE

.

 

ON appears on the screen, and the output is turned on.

2. 

Use the rotary switch to set the range.

3. 

If you set the range to EXTRA, press 

TYPE

 to select the 

sensor.

 

If you set the range to PT100, press 

TYPE

 to select the 

sensor coefficient.

  Select a coefficient from IEC(3851), 3850, JPT100(3916), and 3926.

 

If you set the range to Ω, press 

TYPE

 to select 3000Ω or 500Ω.

Note

At the 3000Ω setting, the CA330 sources resistance ranging from 0.0 Ω to 3300.0 Ω. At the 500Ω 

setting, the CA330 sources resistance ranging from 0.00 Ω to 550.00 Ω. It can be used to calibrate 

a RTD in this range.

4. 

Follow the instructions in the Getting Started Guide to connect the CA330 to the target device 

using the included lead cable.

5. 

Follow the instructions for common operations in the Getting Started Guide, and set the output 

value with the ▼ and ▲ keys. The number of counts that change when the ▼ or ▲ key is 

pressed is different when the range is set to Ω and when it is set to some other setting.

Note

•  The CA330 is calibrated excluding the voltage dip in the lead cable.

  Load current readings include an error resulting from the lead cable resistance.

•  The included binding post can also be attached to the terminal.

•  If the excitation current exceeds the upper limit, the source value display blinks.

This manual explains how to use the RTD Calibrator.

Keep this manual in a safe place for quick reference in the event that a question arises.

Changing the Output Mode

1. 

Refer to “Keys” in the Getting Started Guide, and set the output mode.

 

Normal output (no display): The set value is output. The output value can be varied using the ▼ 

and ▲ keys.

 

Span check (

): In addition to normal output, the output can be varied in units of 25% of the 

span.

 

Step sweep(

): The output is varied automatically in steps of 25% of the span.

 

Linear sweep ( ): The output is varied linearly from 0% to 100%.

 

Press simultaneously to set the output mode.

Increase or 

decrease 

by 1 count

Increase or decrease 

by 100 counts

Increase or decrease in 

25% steps of span

Set to 100% of 

span

Set to 0% of 

span

Output setting for span check

Pressing this when sweeping is 

paused sets the output to the 

span 0% value.

Sweeping

  The output value is varied automatically between 0% and 100% of the specified span. There are 

two sweep modes: step and linear.

 

Time

Output

0%

100%

Sweep time

Time

Output

0%

100%

Sweep time

Step sweep

Linear sweep

1. 

Set the 0% and 100% of the span, which is the sweep range.

 

Set the span 0% value using the ▼ and ▲ keys and then press simultaneously the first and the 

second ▼ keys from the right. SET is displayed, and 0% is set.

 

Likewise, set the span 100% value using the ▼ and ▲ keys and then press simultaneously the 

first and the second ▼ keys from the right.

 

For details on key operation, see “Keys” in the Getting Started Guide.

2. 

Set the output mode to step sweep or linear sweep. The ON indicator blinks.

3. 

Press 

TYPE

. Sweeping will start. The ON indicator changes to solid.

 

Pressing 

TYPE

 again pauses sweeping and causes the ON indicator to blink. The displayed 

value continues to be output while sweeping is paused.

 

Pressing 

TYPE

 yet again resumes sweeping from the last output value.

 

When sweeping is paused, pressing the left-most ▲ key sets the output to the span 0% value.

Changing the Sub Display

  The temperature shown on the main display can be displayed using a value converted into a 

resistance or a percentage of the span. This is invalid when the range is Ω.

 

Press simultaneously to set the sub display.

 

CA330
RTD Calibrator
User’s Manual

IM CA330-01Z2 

2nd Edition

2nd Edition: January 2016 (YMI)
All Rights Reserved, Copyright © 2015, Yokogawa Meters & Instruments Corporation
Printed in Japan

IM CA330-01Z2

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