Setting Example (Measuring Temperature Using Thermocouples)

This section describes how to configure the settings to measure temperature with the instrument and a plug-in module

You can measure temperature with the following products.

  • Logger: LR8450 or LR8450-01

  • Plug-in module: U8550 Voltage/Temp Unit

  • Thermocouple: Type K

Preparing for measurement

1 Insert storage media.

SD Memory Card and USB Drive

2 Connect the thermocouple (Type K) to the U1-1 input terminal of the module.

Cable insulation colors vary by country and manufacturer. Check before connecting.

Connecting voltage cables and thermocouples

How to operate the instrument

1 Press the SET key to display the [Measure] main tab and the [Record] sub tab.

Set the recording conditions as follows:

 

No.

Setting

Condition

Description

1

Start

Manual

Starts recording when the corresponding key is operated.

2

Stop

Manual

Stops recording when the corresponding key is operated.

3

Recording mode

Normal

Fixed.

4

Recording interval

1 s

Measures temperatures every 1 s.

5

Repetitive recording

OFF

Disables the repetitive recording. The instrument will perform a series of measurements only once.

6

Recording time

Continuous

Continues the recording until you press the STOP key.

7

Alarm source

OFF

Disables the alarm function.

8

Synchronous operation

OFF

Does not use synchronous operation.

2 Press the SET key to display the [Channel] main tab and the [Individual] sub tab.

The instrument represents the input channels as Un-m.
n represents the module number; m represents the channel number.

 

Set the input conditions of U1-1 (Channel 1 of Module 1) as follows:

 

No.

Setting

Condition

Description

1

Check box

Performs measurement for channels whose check box is selected.

2

Input type

Thermocouple

Measures temperature using thermocouples.

3

Range

100°C

Measures temperature between -100°C and 100°C.

4

Type

K

Select Type K thermocouple.

5

Burn out

OFF

Disables the thermocouple wire break detection function.

6

RJC

INT

Performs the reference junction compensation in the measurement module.

Switching over to the [Unit 1] sub tab allows you to configure the settings for 15 channels at once.

Clear the check boxes of channels U1-2 to U1-15, exempting the channels from the measurement subjects.

 

3 Start measurement.

Press the START key.

The confirmation window [Start measurement?] will appear.

Select [Yes], and then press the ENTER key to start measurement.

 

Wave+Set screen

 

You can use the WAVE key to switch the screen.

 

Wave screen

Wave+Value screen

Value screen

Alarm screen

 

When [X-Y Composite] is on, the [XY+Set] and [XY+Value] screens will also be displayed.

“1.15 X-Y Compositing” in the Instruction Manual.

4 Stop measurement.

Press the STOP key.

The confirmation window [Stop measurement?] will appear.

Choose [Yes], and then press the ENTER key to stop measurement.

5 Save the measured waveform data.

When you press the SAVE key, the file saving window will appear.

Under [Type], select [Waveform]. Under [Format], select [Binary].

Press the ENTER key while [Save] is selected.

 

 

The instrument can load binary-form (LR8450-specific-form) waveform data only.
When you do not name files, the instrument will automatically name them.

6 Load the saved waveform data.
When you press the FILE key, the file list screen will be displayed.

Waveform data is saved in the [HIOKI] > [LR8450] > [DATA] > [yy-MM-dd] folder.
(yy-MM-dd represent the year, month, and date, respectively)

 

Press the ENTER key while files are selected. The data loading window will be displayed.

Select [OK] and then press the ENTER key. The instrument will load the files.

 

 

Each data is saved in the following folders:

  • CONFIG: setting data

  • DATA: waveform data

  • MEASUREMENT: numerical calculation results

  • PICTURE: image data