T&D TR-71U, User Manual

27

If Installation Fails

If, during USB device driver installation, some trouble occurs that results 

in  a  failure  to  install  properly,  the  following  display  will  appear  in  the 

Device Manager.

If this occurs, please re-install from the

「

USB Device

」

properties.

◆

How to Re-install

1

.

In  the  Device  Manager Window,  right  click  on 

「

USB  Device

」

under 

「

Other Devices

｣

 to display the USB Device Properties.

2

.

In the USB Device Properties Window, click on the 

[

Reinstall Driver

]

button to display the Installation Window. Follow the directions to 

install.

[

Reinstall Driver

]

button

Specifications

28

Device Type

TR-71U

TR-72U

No. of Measurement 
Channels

2 Channels

(

Select from ch1. internal

／

ch.2 external

)

2 Channels

(

1 Temperature

／

1 Humidity

)

Measurement Items

Temperature

Temperature

Humidity

Internal Temperature 
Sensor

-

10 to 60

℃

-

10 to 60

℃

－

Attached Sensor

-

40 to 110

℃

0 to 50

℃

10 to 95

％

RH

Optional Temp. Sensor

-

60 to 155

℃  ※

1

-

40 to 110

℃

－

Measuring Accuracy

(

with Attached Sensor

)

Average

±

0.3

℃

(-

20 to 80

℃

)

Average

±

0.5

℃

(-

40 to 

-

20

／

80 to 110

℃

)

±

5

％

RH

(

at 25

℃

 50

％

RH

)

Measuring

／

Display Resolution

0.1

℃

1

％

RH

Sensor

Thermistor

Macromolecular 

Humidity Sensor

Recording Interval

Select from 15 choices: 1

・

2

・

5

・

10

・

15

・

20

・

30 seconds 

1

・

2

・

5

・

10

・

15

・

20

・

30

・

60 minutes

Recording Capacity

8000 readings

×

2 channels

Recording Modes

Endless Mode

／

One-time Mode

LCD display

(

Ch1 only, Ch2 only, alternating display

)

Measurements, 

Recording Status, Battery Life Warning, Amount of Recorded Data,

Unit of Measurement

Power

AA alkaline battery 

(

LR6

)

Battery Life

About 1 year 

※

2

Data Backup

Activated when battery power is low or when switch is off 

(

About 1 year

)

Interface

USB Communication Cable 

(

option: RS-232C

)

USB Communication 
Time

When downloading 

(

1 unit of full data-about 8 seconds

)

Dimensions

／

Weight of Main Unit

H55

×

W78

×

D18

mm

／

about 62 g 

(

including one AA battery

)

Working Environment 
for Main Unit

Temperature: 

-

10 to 60

℃

Humidity: under 90%RH 

(

without condensation

)

Attached Sensors

TR

-

0106

×

2

TR

-

3100

×

1

Accessories included in 
package

AA alkaline battery 

(

LR6

) ×

1

／

User's Manual 

(

Warranty

) ×

1 

USB cable

×

1 

(

US-15C ; length 1.5 m

)

Software set

×

1

／

User's Manual 

(

Warranty

) ×

1

※

1:

There are two types of temperature sensor for TR-71U depending on measurement range. For 

details see Optional Accessories

on p.29.

※

2:

Battery life depends upon the measuring environment, recording interval, and quality of the 

battery being used.