JAPAN UNIX UNI-SENSOR 701A User manual

Digital Thermometer
UNI-SENSOR 701A
Operating Instructions
(For Type 5)
Ver. 5.0.2

UNI-SENSOR 701A Operating Instructions
Table of Contents
Introduction.......................................................................................................1
1. Precautions...............................................................................................1
2. Features ...................................................................................................2
3. Checking the Thermometer ......................................................................2
4. Specifications............................................................................................2
5. How to Operate the Thermometer and Descriptions of the Functions ......3
6. How to Use Each Sensor (Optional).........................................................7
7. Sensor Group for VariousApplications .....................................................8
8. Maintenance ...........................................................................................9
9. Warranty card .........................................................................................10

1
Introduction
Thanks for purchasing a JAPAN UNIX UNI-SENSOR 701A(Type 5) Digital Thermometer.
Read the Operating Instructions thoroughly and understand the descriptions well before using
this UNI-SENSOR 701A (Type 5) Digital Thermometer to operate it correctly.
CAUTION
No part of this document may be reproduced or photocopied in any form without prior
notice.
The contents of this document are subject to change without notice in the future.
Although we have taken all possible measures to ensure the descriptions of this
document, please do not hesitate to contact us if you find anything wrong such
as an error.
1. Precautions
Before using the UNI-SENSOR 701A digital thermometer, be sure to read the following
cautions and understand them well.
Use the UNI-SENSOR 701A digital thermometer under the environment
that is regulated with the specifications only. Otherwise, it may lower the
reliability of the thermometer or cause the thermometer to malfunction.
If you do not use the thermometer for a long time, the battery may leak.
Please remove the battery from the thermometer.
The case of the thermometer is made of ABS resin. Be careful not to
bring the case to any substance whose temperature is high so that it
cannot be deformed.
Organic solvent such as thinner, benzin and alcohol may deform the
thermometer. Do not apply such solvent to the thermometer.
CAUTION
CAUTION
CAUTION
CAUTION
Note: Type 5 corresponds to products to be
delivered in and afterAugust 2012.
Regarding Type 5, “A” is inscribed in the
serial No. of the product nameplate.

2
2. Features
This UNI-SENSOR 701Ais a product of outstanding safety and reliability. Its main features
are shown below.
①The resolution of 1°C that is enough to measure the iron tip temperature is implemented
at a low cost.
②Optimum shape to measure the iron tip temperature of the soldering robot.
③High response speed allowing your quick operation
④A wide choice of sensors you can select according to your purpose
⑤This thermometer is operable in a dark place because a back light is installed as
standard.
3. Checking the Thermometer
Take out the UNI-SENSOR 701Afrom the package at first. Check the supplied parts one by
one from the following figure to see if you have all parts and if any of them is not damaged. If
you do not have any of them or if any of them is damaged, contact the dealer from which you
have purchased the thermometer.
4. Specifications
Model
UNI-120 (Type 5)
Sensor input
TYPE K (CA) Thermocouple
Display resolution
1°C (0.1°C at measurement not exceeding 199℃)
Measuring range
Room temperature to 500°C (with the sensor “UNI-9”for the
standard iron tip)
* Maximum measuring range: -99 to 1200°C (Basic
characteristic of the main unit. Actually, this depends on the
applied sensor.)
Indication accuracy
Tolerance of display: ±0.3% of rdg ±2 dig
Temperature coefficient: ±0.03% of FS/°C
Sampling period
3 times/second
Cold junction compensation
accuracy
± 0.5°C (at 25°C ±10.0°C)
Power source
9V, Type 006PAlkaline dry cell × 1
Operating time
Continuous 100 hours or more (when the back light is OFF)
Remaining battery power decrease indicating function
Operating switches
POWER (ON・OFF) ・HOLD ・MODE
Case
Main unit
Sensor for the iron tip
UNI-120
UNI-9

3
*Auto power off
*Backlight
Power OFF: Power OFF in 10 minutes in the ON status
Back light: Back light OFF in 1 minute after the power supply is
turned on in the OFF status
The back light can be turned on and off by key switch.
*Applicable to Ver. 5 or later.
In the delivery status, both functions are set to ON.
Operating environment
0 to 40°C, 20 to 85 %RH (Non condensing)
Weight of main unit
Approx. 180 g
Outline dimensions
185 (W) × 35 (H) × 23 (D) mm
5. How to Operate the Thermometer and
the Descriptions of the Functions
5.1 Names of Parts and Display Screen
Names of Parts Display Screen
1: Sensor port 口4: MODE key
2: Sensor stopper 5: HOLD key
3: LCD display screen 6: POWER key
7: Battery lid (Back side)
5.2 How to insert a battery
Open the battery lid.(Back side)
Connect the power cable to the battery.
Insert the battery.
Close the battery lid.
a: Low battery mark
b: MAX (maximum temperature indication) mode
c: MIN (minimum temperature indication) mode
d: HOLD (measured temperature indication held) mode
e: AVG (average temperature indication) mode
f: Auto power off mode
g: Temperature indication
h: unit (°C)

4
CAUTION
*If you do not use the thermometer for a long time, the battery may leak.
Be sure to remove the battery from the thermometer.
*Take care not to mistake the polarity of the battery.
*Be sure to use a 9 V alkaline dry cell of type 006. (Manganese dry cell is
available.)
5.3 Turning on or off the thermometer
1) Turning ON/OFF the power
Connect the sensor to the main unit.
When you press the key, all of the display items
light for approximately one second, and the
thermometer starts measuring.
When you press the key again, the thermometer is
turned off.
* When the power supply is turned on, the back light will be turned on regardless of the
ON/OFF setting of the back light function. When the back light function is OFF, the back
light will be turned off after a lapse of about 1 minute. The back light function and auto
power OFF function hold the previous setting in the power OFF status. (Additional function
of Type 5)
* When you press the POWER key anytime during measurement, the thermometer is turned
off. When you turn on the thermometer, it enters the normal measurement mode.
* In this document, the state into which the thermometer is put at power-on (no function
appears on the left side of the display) is referred as to the “normal measurement mode.”
2) Auto Power Off Function (Type 5 Additional Function)
The auto power OFF function turns off the power supply automatically in about 10 minutes in
which no key operation is performed. This function prevents the battery from being
consumed in vain when the operator forgets to turn off the power supply. At delivery, the ON
status is set.
* When the power supply is turned on by the POWER key while pressing the HOLD key in
the power OFF status, the auto power OFF function is turned on/off.
* When “”lights in the display section, the auto power OFF function is effective.

5
3) Backlight Function (Type 5 Additional Function)
If the back light is turned on, the temperature can be measured even in a dark place. At
delivery, the function is set to ON.
* When the power supply is turned on by POWER key while pressing the MODE key in the
power OFF status, the back light function is turned on/off.
* If the power supply is turned on in the back light OFF mode, the back light will be turned on
at first and then turned off in about 1 minute.
* The service life of the battery will be greatly reduced by turning on the back light function.
We recommend the user to use the back light function in the status where the auto power
OFF function is effective (in the initial status of delivery).
Reference: The service life of the battery, when the back light is always ON, is about 40
hours.
5.4 How to measure the temperature of an iron tip
Melt wire solder with the iron tip, and put the iron tip to
the center of the sensor to measure its temperature.
CAUTION
It takes a while for the temperature to
become stable after solder is melted.
The sensor section will be broken by
applying the iron tip with high pressure.
Measure the temperature under
appropriate pressure through well-melt
solder.
This pressure is for appropriate
soldering. When new solder always
exists in the center of the sensor, correct
measurement can be performed.
If this is discolored into black or old
solder remains in this position, supply
new solder.
If solder stays on the back side of the
center of the sensor, remove it.
5.5 Detaching the sensor
Turn the power off and push the sensor stopper
and pull the sensor out.
Push here.

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5.6 Various HOLD functions
Selection
(Maximum value HOLD function)
Selection
(Minimum value HOLD function)
Selection
(Average value HOLD function)
Maximum temperature display mode
A normal measurement value is displayed.
Confirmation
Cancel
Confirmation
Cancel
Minimum temperature display mode
A normal measurement value is displayed.
Average temperature display mode
A normal measurement value is displayed.
HOLD function
The current measured temperature data is held
and displayed.
“HOLD”lights on the display.
Maximum value HOLD function (MAX/HOLD)
When “MAX”and “HOLD”are lighting on the display, the
thermometer holds and displays the maximum
temperature data while constantly updating the maximum
temperature data being measured.
If an error occurs, the error message is held and
displayed.
The maximum
temperature is displayed.
Minimum value HOLD function (MIN/HOLD)
When “MIN”and “HOLD”are lighting on the display, the
thermometer holds and displays the minimum
temperature data while constantly updating the minimum
temperature data being measured.
If an error occurs, the error message is held and
displayed.
Average value HOLD function (AVG/HOLD)
This is the function for displaying the average value
obtained during the desired time period.
When “AVG”is lighting on the display, the thermometer
internally holds the temperature data being measured.
The actual measurement temperature data is displayed.
A normal measurement
value is displayed while
the average value is being
obtained.
Average value displayed while “AVG”is lighting
When you press the HOLD key, “AVG”and “HOLD”
light on the display, and the thermometer calculates the
average of the measurement temperature data held with
it internally, and holds and displays the average value.
You can calculate the average value of the measured
temperature data for up to five hours. After a lapse of
five hours or more, this function is cancelled.
If an error occurs during averaging, the error status is
held and displayed.
Confirmation
The minimum
temperature is displayed.

7
6 Errors
6.1 Error messages
(1) Indication of the broken sensing edge
If the sensing edge of the sensor is broken or if the sensor is not
connected to the thermometer, “Err”appears on the display as
shown in the right figure.
If this message appears on the display, replace the sensor with a
new one or connect the sensor to the thermometer.
(2) Over range indication
If the measured temperature exceeds the measurable range, “or”or
“-or”appears on the display as shown in the right figure.
If the sensing edge of the sensor is broken, this over range error
may appear also. If the temperature being measured is within the
measurement range clearly, check the sensor. If the indicated
value gets unstable abnormally, check the sensor also.
(3) Indication of decrease in the battery power
When the remaining power of the battery decreases, and then the
remaining power level becomes approximately five hours, “B,”which
indicates decrease in the battery power, lights on the display. The
entire display is set to flash when the remaining power level
becomes approximately 30 minutes.
Note that when the battery power decrease indication appears
varies depending on the battery type and/or the used environment.
When the indication of decrease in the battery power lights, replace
the battery with a new one as immediately as possible.
(4) What to do if the thermometer malfunctions
If the display or the thermometer itself
malfunctions, push the reset switch of the battery
storage section with a thin stick or similar tool.
When you press the reset switch, the
thermometer is put into the state in which it is put
at power-on.
*If the thermometer does not operate normally
even after you push the reset switch, the
thermometer may have broken down. Contact
a dealer from which you have purchased the
thermometer or us.
* Even if you press the reset switch, the back light function and auto power OFF function
hold the previous power OFF status without returning to the initial status.
CAUTION
When the battery is exhausted completely, the thermometer does not
display the low battery mark.
Reset switch

8
7. How to Use Each Sensor (Option)
①How to put the surface sensor to the target
Put the surface sensor to the contact surface of the
target vertically.
Note that the thermometer cannot detect the
correct temperature if the contact surface of the
target is not smooth or flat. (The upper limit of
measurement is 200°C.)
* Do not use it for the soldering iron.
(UNI-1)
②How to measure the temperature of a board
Use a heatproof tape to paste the sensor onto the
place of a board whose temperature you want to
measure. (The upper limit of measurement is
200°C.)
(UNI-8A)
③How to measure the temperature of a solder bath
Push the sensor through the solder bath to
measure the temperature of the inside of the
solder bath.
This sensor is not suitable for measurement of
small dots and surfaces.
Dip an end portion (at least 200 mm) of the sensor
in the material to be measured (for example, melt
solder).
(UNI-2)

9
8. Sensor Group for Various Applications
Model name
Shape
Tip of the
sensor
Operating
temperature
Feature/Application
UNI-9
Sensor for an iron tip
(Supplied with the
thermometer)）
Normal
temperature to
+ 500°C
You can measure the
temperature of an iron tip
correctly.
UNI-1
Surface sensor
(optional)
- 50°C to
+ 200°C
The certain ground contact
pressure is obtained with the
spring mechanism to allow
the thermometer to detect the
correct surface temperature.
Durability of the contact
surface of the sensor is
higher than that of the
competitors, and the life is
longer also.
UNI-8A
Pasting type sensor
(optional)
- 30°C to
+ 200°C
Use a heatproof tape to paste
the sensor at a position
whose temperature you want
to measure.
High-sensitive sensor that
can measure the temperature
in real time
The sensor is film-laminated
and its strength is increased.
UNI-2
Internal
temperature sensor
(optional)
- 100 °C to
+ 500°C
Push the sensor through the
solder bath to measure the
temperature of the inside of
the solder bath.
* The specifications, design and/or size are subject to change
without notice due to continual improvements.
Spring

10
9. Maintenance
About storage
When you store the thermometer, avoid places (environment) subjected to:
Direct sunlight
High temperature・High humidity
Vibration
CAUTION
The case of the thermometer is made of ABS resin. Be careful not to bring it
close a substance whose temperature is very high so that it cannot be
deformed.
Organic solvent such as thinner, benzine and alcohol may deform the
thermometer. Do not use any of them.
When you do not use the thermometer for a long time, store it after removing
the battery from the device. Remove the sensors and store them in a case.