T&D RTR-52Pt User Manual Download Page 2

3

. Settings and Communication

1

. Outline

To start and stop recording, make or change the various recording settings and/or collect data please see the 
following instructions.
For details about how to change settings and about communications please see the User's Manual that comes 
with the 

RTR-57U

. You can also find detailed information in the User's Manual and in the Help Menu of the 

software.

Optical Communication with an RTR-57U 

By simply placing an RTR-

52

Pt unit face down on an 

RTR-57U

 you can carry out recording start settings and 

changes, as well as, collect recorded data via optical communication.

Using Wireless Communication with an RTR-57U Unit 

By registering an RTR-

52

Pt unit as a Remote Unit of an 

RTR-57U

, it is possible to carry out wireless data 

communication (special short wave radio) allowing you to start and stop recording, make recording condition 
settings and collect data without having to handle the RTR-

52

Pt units.

2

. Getting Started

NOTE:

When changing battery make sure to carefully read "

5

. Changing Battery".

Upon first installation of the battery, measuring and recording will automatically begin at the factory set 

default recording settings: (Recording Interval: 

10

 minutes / Endless Mode / Immediate Start)

After replacing the battery the settings will return to the most recent recording settings.

If necessary make changes to the default recording settings according to your usage and needs. If you 

are going to be using wireless communication it is necessary to register the [Group Name] and [Remote 
Unit Name] information at this time. See "

3

. Settings and Communication"

Insert the battery

Thermo Recorder RTR-

52

Pt is a Data Logger designed to be used with a platinum 

resistor (Pt

100

/Pt

1000

) sensor for measuring and recording temperature. The data 

recorded with the RTR-

52

Pt can easily be downloaded via special short wave wire-

less communication to an RTR-

57

U Data Collector, where the data can be saved. 

Then it is possible to download the data to your computer for data analysis and man-
agement with our exclusive software. Communication between units can be done via 
optical communication, as well as wireless communication.

Basic Functions of RTR-52Pt

Wireless Communication Function

Via special short wave radio communication recorded data can be downloaded from 
an RTR-

52

Pt unit and saved to the 

RTR-57U

 Data Collector Unit. Recording settings 

and recording start can also be controlled via wireless communication.

Wireless  Communication  can  occur  between  an  RTR-52Pt  Unit  and  an 

RTR-57U Unit within a range of up to about 100 meters, if unobstructed and 
direct. 

NOTE:  
In order to collect data via wireless communication, it is necessary to register via 
computer the RTR-

52

Pt unit as a Remote Unit in the 

RTR-57U

 Unit you wish to use. For 

details about making these settings, please see the Help Menu in the software or the 
User's Manual for the software.

Wide Temperature Measurement Range

The RTR-

52

Pt with a platinum resistor (Pt

100

/Pt

1000

) sensor can measure and 

record in a wide range of -

199

.

9

 to 

600

.

Communication with your Computer

By placing an RTR-

52

Pt unit face down on an 

RTR-57U

 unit that is connected to your computer, you can make 

any necessary recording conditions settings and changes, start recording and download recorded data easily 
via your computer display. 

Place the RTR-

52

Pt unit face 

down on the 

RTR-57U

If you are going to be using wireless communication 

it is necessary to register the [Group Name] and 
[Remote Unit Name] information in the 

RTR-57U

 

units.

The wireless communication range, if unobstructed 

and direct, is about 

100

 meters. In some cases 

communication cannot take place even within 

100

 

meters. Please check first by carrying out the 
wireless communication test with the remote units.

5

. Changing Battery

NOTE: After removing the old battery, replace them with new battery within 

1

 minute. 

1

. When the battery power becomes low, the [BAT] indicator will appear on the LCD display. 

Once the [BAT] indicator appears please change the battery as soon as possible. 

Recording: OK
Wireless Communication: OK
Data Download: OK

The recorded data will remain saved.
If at this time a new battery is placed in the unit, recording will continue. 
After changing the battery, the [BAT] indicator will disappear in a short time. 

2

. If you do not change the battery and continue using the unit, the temperature display will intermittently dis-

play [bAtt]. Please change the battery at once. 

Recording: OK
Wireless Communication: No
Data Download: No

The recorded data will remain saved. 
If at this time a new battery is placed in the unit, recording will continue and downloading of saved data can be done. 
After changing the battery, the temperature display will return to displaying only the temperature after which the BAT indicator 

will disappear a short time later. 

3

. If you do not change the battery even under conditions in 

2

 above, the REC indicator will disappear and 

temperature display area will display [SLP]. ("SLP" stands for "Sleep Mode".)

Recording: No
Wireless Communication: No
Data Download: No

Recording will stop and recorded data until this point will be saved.
If at this time a new battery is placed in the unit, downloading of saved data can be done. To start recording again please set the 

recording conditions via your computer or 

RTR-57U

 and begin recording. See "

1

. Outline"

After changing the battery, the temperature display will return to displaying the temperature. 

4

. If you do not change the battery even under conditions in 

3

 above, the display will go blank. 

All of the recorded data will be erased. 
If at this time a new battery is placed in the unit, [CHEC] will appear on the display after which recording will begin again using 

the previously set recording conditions. 

Setting the Recording Conditions

The recording conditions include [Recording Mode], [Recording Interval], [Start 
Recording Date and Time] and [Unit of Temperature]. Detailed instructions on 
how to change these settings are provided in the User's Manual for either the 

RTR-57U

Recording Mode: Select from two types of Recording Mode

ONE-TIME MODE: 
When the data capacity of 

16

,

000

 readings is reached, the LCD display 

will indicate [FULL] and recording will stop. 
ENDLESS MODE:  
When the data capacity of 

16

,

000

 readings is reached, the data will be 

erased in order from the oldest data first and recording will continue. 
*Below is an estimate of the amount of time it will take for the unit to be-
come [FULL] in the ONE-TIME MODE. 
Calculation Example:  

30

sec (recording interval) x 

16

,

000

 readings (capacity limit) = 

480

,

000

 

seconds = about 

5

 days and 

13

 hours. 

Recording Interval

1

 second

30

 seconds

15

 minutes

60

 minutes

Time period

4

 hours  

26

 min.

5

 days  

13

 hours

166

 days  

16

 hours

1

 year 

10

 months

Starting and Stopping Recording

You can make settings to control the starting and stopping of recording.

NOTE: 

  By starting a new recording, all data previously stored in the data logger unit will 

be erased.

  If you want to save the data make sure to download it and save it in an 

RTR-57U

 

Unit or in your computer before starting a new recording.

4

. About the LCD Display

Recording Status. (REC)

LIT UP: displayed during recording or when FULL of data.
BLINKING: displayed when waiting for a programmed recording to start.

Low Battery Life Warning Indicator 

Displayed when time to change the battery.

 Temperature Measurement Display

Unit of Temperature Measurement 

Select from 

 (Celsius) or  F (Fahrenheit)

Check

This is displayed under the following conditions: after purchasing and putting in the 

battery for the first time, if the battery ter/- were mistaken and a short oc-

curred, or if the battery are replaced after having been taken out for a long period. 

If this is displayed, all data that had been stored in the main unit has been erased. 

Full Memory

If recording under the ONE-TIME MODE, when the data readings reach the upper 

limit of 

16

,

000

 readings, recording will stop and this will be displayed intermittently 

with the current temperature.

Wireless Transmission

This will be displayed when transmitting data to an RTR-

57

U unit via wireless 

communication.

No Sensor Connected

Displayed when a sensor has not been connected or the wire has been broken. 

Measurement and recording will continue and battery power consumed.

Measurement Over Range

Temperature display blinks when the temperature goes below -

199

.

9

 

 or above 

600

 

. While blinking, measuring and recording still continue. However, note 

that the displayed temperature should be used only as a rough guide. When the 

temperature cannot be displayed, a blinking [----] sign will appear. 
When measuring and recording using Fahrenheit, although it is possible to mea-

sure between -

327

.

8

 and 

1112

 degrees, the LCD on the Logger can only show 

between -

199

.

9

 and 

999

.

9

 degrees.

Note:

 

Use in cold environments may cause the display to be difficult to read; this is not a malfunction. For details 
about the display during battery changing see: "

5

. Changing Battery"

Part Names and Functions

Downloading Data = (Data Collection)

After downloading you can save the data into files and folders, create 
graphs, make data tables, create text file format files for use with popular 
spreadsheet software, and print graphs and tables.

Setting Upper and Lower Limits

By making upper and lower limit settings you can check your recorded data 
as it is downloaded for data that exceeds the set limits. 

Wireless Thermo Recorder RTR-

52

Pt

Place the RTR-

52

Pt 

unit face down on the 

RTR-57U

Antenna

LCD

Optical Communication 
Port

Sensor Adaptor

Terminal Block

Connect the Temperature Sensor

3

Check the rubber packing for any cuts or scratches and replace the cover as it was when opened.

Make sure no water or foreign objects get inside the case. 
If dirt or scratches are present on the rubber packing, water resistance 

will be reduced.

Be sure to fasten the cover tightly.
Make sure not to over tighten the screws. 

(Tightening Torque: About 

20

N-cm to 

30

N-cm [

2

kgf-cm to 

3

kgf-cm])

2

.

Insert the battery in its tube and place in unit as in diagram.

Make sure that + and - are correct.

1

.

 Remove the screws and take off the back case.

*If nothing appears on the LCD Display, please follow the above instructions again.

Sensor Jack

Sensor Adaptor

1

Loosen the screws of the terminal block.

2

Connect the sensor terminals to the terminal block as 

instructed in the diagram on the terminal block.

Securely tighten the screws to the terminal block. 

3

Connect the Sensor Adaptor to the RTR-

52

Pt Logger's Sensor Jack.

Make sure that the sensor is properly connected  

by inserting it until you hear a clicking sound.

*The RTR-

52

Pt factory default sensor type is "Pt

100

".  

In order to use a Pt

1000

 sensor, change the settings using the software  

that is provided with RTR-

57

U Data Collector Units. 

(Please use the latest version of the software.)

Front

Back

Make sure to use the proper size and type of 

screwdriver.  (A  #

1

  Slot  Screwdriver  is  best 

compatible with these screws.)

Please note that this User's Manual has been written based on the presupposition that an RTR-

57

U Data Collector unit is used as a Base Unit.

When using an RTR-

50

 or an RTR-

5

W unit as a Base Unit, see also the User s Manual that comes with the Base Unit being used. 

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