OPERATING INSTRUCTION
®
CEM3 Model
To use this product correctly and safely, please
read this manual carefully before use. If you have
any questions about the product, contact your
nearest distributor or TOHNICHI MFG. CO.,LTD.
1
Cautions on Safty
To the User
In order to use the torque wrench properly and safely, please
read this instructions before operation. If any questions, please
contact a Tohnichi authorized distributor or Tohnichi office.
Keep this operating instruction for future use.
Signal Words
Signal word is the title which shows the item which should
be known on safe reservation of people and the handling of
equipment. The signal word on safe has the classification of
"danger", "warning" and "cautions" by the degree of a risk of
doing to people. It uses with a safe cautions symbol and the
following situation is shown, respectively.
Use only a dedicated charger and storage battery
referred in this manual.
Please do not use any other chargers or storage batterys not
designated on this manual.
Charge correctly
Please use the charger only listed in this manual.
It may generate heat unusually and there is fear of fire.
Do not charge a storage battery where temperature is less than 0
degree, and more than 40 degrees C.
Doing so may cause battery to burst or set on fire.
Please charge a storage battery in a well ventilated place.
Please do not cover a charger or a storage battery with cloth etc.
Doing so may cause battery to burst or set or fire.
When not using charger, extract plug from outlet to avoid electric
shock or fire.
Take the circumference situation of work place into
consideration.
Please do not use main part, a charger , and a storage battery in
rain, or in a place which became wet or got wet.
Doing so could cause electric shock , component failure or fire.
Keep work place well lit to avoid any accidents.
Please do not use or charge in a place where inflammable liquid
and gas exist. It may cause explosion or fire.
Surely use designated accessories and optional
articles only.
Please do not use other accessories and optional articles not
designated in this manual.
Doing so may cause an accident or injury.
"
"
"
Warnings
TOHNICHI DIGITAL TORQUE WRENCH DATA TORK®MODEL CEM3
2
Do not put a storage battery into fire.
It may burst or a toxic substance may come out.
Do not disassemble or remodel the instrument.
It may damage safety, or function, and cause lower durability, or failure.
Switch lever, ratchet firmly.
( Standard accessory interchangeable head : QH )
Ratchet slip may cause accident, injury or failure.
Do not make connect a pipe to make handle longer.
It may cause breakage of the body or be the reason of accuracy
problem.
Take counter measures to use in a high place.
Drop of body or socket may cause accident, injury or reason of failure.
Keep a work place always clean.
Untidy place or work stand may cause an accident.
Do not bring a child to work place.
A child could be accidentally injured.
When you do not use it, keep it in a right place.
Keep work place when not using and always put all equipment and
tools away to avoid any injuries.
Do not keep any main part or battery in a place where the
temperature will go to 50 degrees C or more.
Doing so may cause degradation to the battery.
Battery can also start to smoke and / or start on fire.
Do not force tool to work.
In order to work efficiently and safely, please work with the torque
range of the tool and the part that the tool is being used on.
Use the tool to fit work.
Always make sure that you use the proper size tool with the proper
torque range for each part .
Forcing tool can cause injury to one's self and damage to tool.
Do not handle the battery cord roughly.
Do not carry a battery by its cord.
Do not put cord by heat, gas, oil, or sharp corner.
Doing any of above can cause electric shock and / or fire by
short.
Always brace yourself and maintain balance.
Not doing so may cause injury to one's self.
Maintain carefully
Exchange of accessories should follow the manual.
It may cause injury.
Check cord periodically.
If damage is found, replace it with new one.
A damaged cord can cause electric shock, fire, and /or other
injuries.
Keep grip area and in good condition.
Keep out of oil, and grease.
Cautions
3
Check case and other parts for any damage before
usage.
Check all functions for any damage before usage.
Do not use a charger if inlet plug and / or cord are damaged.
Do not use a charger if it is dropped and something is damaged.
It may cause electric shock and fire by short.
Ask distributors or Tohnichi for damaged case, other parts
replacement, and repair.
(1) Charge only with a charger attached.
(2) Only use the battery model designated in this manual.
(3) Do not cause shock or vibration to this instrument.
(4) Only use this tool in the way that the manual states.
(5) Check starting inspection before usage, and confirm the setting.
(6) This instrument has a possibility of trouble or breakage if wet by
water or oil.
(7) Do not drop or hit this instrument because it may cause trouble
or breakage.
(8) Use this instrument within measuring range of the manual.
(9) Do periodical inspection for this instrument.
(10) Do zero adjustment before measurement.
(11) Surely hold effective line of the handle to do accurate
measurement, and apply force at right angle to the torque
wrench.
(12) Connect body and interchangeable head surely.
If there is strange smell or fire on usage, stop use .
Move this instrument to a safety place, and contact Tohnichi.
For handling of used battery
Nickel metal hydrogen battery is used on this product.
Do not dispose unnecessary battery and recycle it to protect
resources.
Ask the distributors or Tohnichi Japan or overseas facility.
Notes
TOHNICHI DIGITAL TORQUE WRENCH DATA TORK®MODEL CEM3
4
Contents
Outline
Features
Composition
Components
Explanation of each mode
Memory mode
M-3mode
M-2mode ( CEM compatible mode )
Display mode
Hybrid mode
LCD display mode ( Power saving mode )
Measurement mode
MODE-M( Inspection mode on delivery )
MODE-T ( Tightening mode )
Data sampling mode
Usage ( Delivery condition from Tohnichi )
Explanation of other functions
Operation sample ( Hybrid display mode )
Inspection mode measurement ( Without judgment OK/NG )
Inspection mode measurement ( With judgment OK/NG )
Tightening mode measurement
Measurement data readout
Calculation function
Measurement data output in a lump ( PC, printer output )
Measurement data output in a lump ( infrared output )
Measurement data memory clear
Operation sample ( LCD display mode )
Inspection mode ( No judgment )
Readout measurement data
Judgment mode
Tightening mode
Calculation function
Measurement data output in a lump ( PC, printer )
Measurement data output in a lump ( infrared )
Measurement data memory clear
External output format
Each setting procedure
Measurement mode setting Upper limit setting
Lower limit setting Tightening direction setting
Auto memory, reset setting Buzzer output setting
Communication mode setting Communication baud rate setting
Memory mode setting Display mode setting
Setting default Clock display Clock setting
Upper, lower limit setting on tightening mode
Setting of CEM2 communication compatible mode
USB connector corresponding serial output method
Battery
Charging
Options
Specifications
5
This is a digital torque wrench developed for "Retightening
torque measurement"," Loosening torque measurement "of
tightened bolts, or tightening operation of bolts and an
upper compatible model of CEM2.
Control measurement data by measurement time
It is possible to trace date and time measured.
Hybrid display
Bright display LED and LCD ( liquid crystal ) were applied as
hybrid.
Torque value is displayed by bright, easy - to - see 7 segment
LED, and other function is displayed by LCD.
It is possible to use LCD only under direct sunshine or long usage.
Tightening completion alarm, judgment OK/NG function
Tightening completion is informed by LED and buzzer.
Measurement torque is judged OK/NG.
Improvement for data memory
Max 999 data can be memorized. ( before 99 )
Solidity improvement of display unit
Solidity improved a lot by application of aluminum body.
Application of nickel hydrogen battery
Nickel hydrogen battery was applied for environment.
Extension of continuous usage time
It is possible to use 20 hours continuously, and 30 hours by LCD
mode.
(One hours charging : Hybrid display continuous usage: approx. 8
hours )
Battery remaining notice
Application of battery remaining notice solved the problem so far
no way to know how much battery remains.
Less possibility of over torque
Over torque possibility decreased by short effective length and
handle shape modification for small capacity models.
Former data file system is available without change.
Former communication software is available because there is a
compatibility with external output data format of CEM2 on M-
2mode.
2Features
1Outline
3Composition
1) Body 1pc.
2) Accessories
Battery pack BP-5 1pc.
Interchangeable head QH( Suitable ratchet head ) 1pc.
Charger 1pc.
3) Manual 1pc.
TOHNICHI DIGITAL TORQUE WRENCH DATA TORK®MODEL CEM3
6
Interchangeable head
Picture above shows attached QH. Tohnichi head
SH,RH, QH, RQH, DH, HH, FH are available.
PH is not available.
Protection cover
This cover protects the scratch and breakage
by contact between CEM and work.
Liquid crystal ( LCD ) display
It shows clock, battery remaining, counter, and auto memory
condition on hybrid display mode. It shows counter, auto memory,
battery remaining, unit, and torque value on LCD display mode.
7segment LED display
It shows torque value on hybrid mode and does not show to save
power on LCD mode.
Unit display
It shows torque unit of CEM3.
Tightening completion, judgment OK/NG LED
Green LED turns on for tightening completion or OK, and red LED
turns on for NG.
Power switch
Switch to power on and off.When power is on, do zero check on
torque measurement.
Counter send key
Send a counter one by one or cotineously to read out measurement
data. Push counter 15 times successively to send counter per + 10.
Counter return key
Reverse one counter or countineously to read out measurement data.
Push counter 15 times successively to send counter per 10 each.
Terminal cover
This cover protects each terminal from dust and debris.
Mode key
Select key of calculation start position, sample quantity,max value,
min. value, and average except counter 000.
Push 2 sec and do settings (mode setting,upper, lower limit, tightening
direction,tightening direction, tightening completion, auto memory,
reset, buzzer output,output way, communication baud rate, memory
mode, display mode, setting value, and clock setting. )
4Components
Memory key
Memorize measurement data(measurement data,date)and increase
count 1. Output displayed measurement data to external equipment.
Clear key
On peak mode reset peak value.Or clear memorized measurement
data, (measurement value,date). On run mode do auto zero.
Grip
Battery pack ( BP-5 ) is stored inside.
Cap
Cap for exchange of battery pack ( left hand thread )
Charge jack
Jack to connect charger BC-3 and to charge
External output terminal
Terminal to connect exclusive USB cable CEM3-PC ( USB )
Infrared output window
Terminal to transfer data to Tohnichi infrared data receiver R-
DT999 or R-DT100-3.
Reset switch
Push reset switch if display error or malfuction happens.
No need to push every time after charging.
Display details
Hybrid display mode ( Tohnichi delivery condition )
LCD display mode ( Power saving mode )
7
TOHNICHI DIGITAL TORQUE WRENCH DATA TORK®MODEL CEM3
8
5Explanation of each mode
CEM3 has many convenient basic functions and which are
called "MODE".
Memory mode
M-3 mode: Setting on delivery LCD counter is displayed in 3
figures, which is M-3 mode.999 data can be memorized and
measurement time can be output on external output mode.
Data format is different from former CEM2, and data control
software used for CEM2 is not available for M-3 mode.
M-2mode: CEM2 compatible mode. LCD counter is displayed in
2 figures, which is M-2 mode.99 data can be memorized.
External output format is compatible with CEM2, and data control
software used for CEM2 is available for M-2mode.
Display mode
Hybrid mode ( on delivery )
Set display mode "LED".
Liquid crystal ( LCD ) displays counter, time, and 7 segment LED
does torque.
LCD display mode ( Power saving mode )
Set display mode "LED".
Liquid crystal left above displays counter, and center does torque.
7 segment LED is not used.
Measurement mode
MODE MInspection mode on delivery
Set measurement mode "MODE-M".
This mode is used on retightening and loosening inspection.
MODE TTightening mode
Set measurement mode "MODE-T", and input upper limit,lower
limit, tightening direction.
This mode is used on tightening. If peak torque value reaches
lower limit, it indicates by buzzer and LED.
Data sampling mode
RUN mode
Set counter 000 or 00 apply torque and display torque increases.
Release torque, and display torque goes back to "zero".
PEAK mode
Set counter 001-999 or 01-99, apply torque and display torque
increases.Release torque, and display torque keeps max value.
Note: For setting change of each mode, see P28.
This chapter explains simple usage on Tohnichi delivery
condition.
Install attached interchangeable head QH and socket (options).
Push power button.
Do not apply load to the socket at this time.
Display shows as left.
It is continuous condition ( RUN ) because
counter is 000.
Tighten screws and apply torque.
LED Display shows measuring torque.
Next push once and counter is 001.
Now it is max value display ( peak )
condition.
Tighten screws and LED display shows
for example 100.0N.m as left.
Push once and sounds "PI".
Measurement value 100N.m on display
is memorized as 001 measurement.
Counter of LSD increases 002 automatically.
Check 001 memorized measurement value
.
Push once, LCD display shows
counter 001 in left above corner and
measurement time 09:30:01 is displayed
in center just1 second.
One second later display shows on
normal conditions as left.
Pick up counter No by and push
key once to delete memorized data.
For example push key once to delete
100.0N.m.
Measurement data is deleted and
display shows 0.0 as left.
9
6
Usage
( Delivery condition from Tohnichi )
TOHNICHI DIGITAL TORQUE WRENCH DATA TORK®MODEL CEM3
10
CEM3 has several other functions in addition to "mode"
functions.
Auto zero function
On RUN display push key, and auto zero function works.
(As far as torque is within approx. 7.5% of max measurement .)
If torque is more than 7.5%, display shows "Err9".
Display shows Err9
Push power switch and key without torque.
If Err9 disappears, this instrument can be used normally.
If Err9 does not disappear, push reset key and once more push
switch, and key.
If still Err9 will not dsiappear, there is a possibility of sensor or
circuit problem.
Error message
If push or reset switch from power off condition, key check
and zero check function works.
If there is any problem, error message is displayed.
Err1 : Condition key is continuously pushed
Err2 : Condition key is cointinuously pushed.
Err3 : Condition key is continuously pushed.
Err4 : Condition key is continuously pushed.
Err5 : Condition key is continuously pushed.
Display shows Err1 5
Power off and on without touching other keys.
If error message disappears, this instrument can be used.
If error message does not disappear, push reset switch.
If still error will not disappear, there is a possibility of membrane
switch or cicuit board problem.
Auto memory, reset function
Memorize peak hold measurment value within optional setting
range (0.1-5sec) automatically and send one counter.
Set 0.0 if auto memory reset function is not used.
Judgment function ( comparator function )
Set control range (upper limit, lower limit), and judge if
measurement is within or not.
After measurement push to judge, and indicates the result by
green and red LED.
If setting is auto memeory, reset, judge automatically.
Mute function
Set buzzer alarm "OFF". Mute buzzer sound on key operation.
But over torque alarm, tightening completion, and OK/NG alarm
sound.
7
Explanation of other functions
Power saving function function
if no key operation or no torque (approx. below 7.55 of max
measurement ) is applied,7 segment LED will be dark in 1 minute.
Once more operate keys or apply torque, and LED will be bright.
For LCD brightness will not change.
Auto power off function
If no key or no toque condition ( below 7.5% of max measurement )
continues minutes, power will be off.
If it is "LoBATT" alarm condition, power will be off in 1 minutes
besides above.
Battery remaining display function
LCD has a function to show battery remaining condition by 4 steps.
No battery. Charge immediately.
Display "LoBATT" on LCD shows no key operation
except power switch. On this condition power will be
off in 1 minute.
Memorized data and settings will not disappear even if without
battery.
Over torque alarm
If it exceeds more than 105% of max measurement torque, dsiplay
shows torque and "- - - "alternately, and buzzer sounds.
Table : Over torque alarm, peak hold starting torque
table
11
Enough battery remains.
Battery remaining is not enough.Usage time is about
half.
It is time to charge battery.
"LoBATT" alarm condition
This chapter explains each operation,and usage by hybrid
display mode.
Inspection mode measurement (Without judgment
OK/NG)
Set counter 001-999, and measure peak value.
Set display mode "LED", measurement mode "MODE-M", and
upper, lower limit"0". (Registered on delivery)
Apply torque, peak starts from 7.5% of max torque,and peak
value renews.
8
Operation sample
(Hybrid display mode)
TOHNICHI DIGITAL TORQUE WRENCH DATA TORK®MODEL CEM3
12
Push , and memorize peak value,
measurement time.if it is connected with
PC/printer, measurement data is output.
Note) measurement time is memorized
when key is pushed.
Peak torque value reset , count up
Note) If there is measurement data
memorized before on counter 002 data,
the data is displayed. Apply load once
more and it exceeds display torque, peak
is renewed.
Push ,and memorize peak value
and measurement time. If it is connected
with printer, measurement data is output.
Peak torque value reset, count up
Inspection mode measurement (with judgment OK/NG)
Judge if measurement data is within control range.
(OK : Upper limit Data Lower limit)
Set display mode "LED"(on delivery).
Set measurement mode "MODE-M", and input upper, lower limit.
( if set upper, lower limit 0, no judge. )
After measurement push key , and judge OK/NG.
If NG, red LED lights on, and buzzer continues to sound.
If memorize measurement data as it is, push key, and
push key to clear.
Measurement data OK
Measure
Push key and judge.
(If auto memory, reset setting, do
automatically.)
Green LED lights approx. 0.5 sec.
Memorize peak value, measurement
time. If it is connected with printer,
measurement data is output.
(If auto memory reset setting,
memorize automatically.)
Measurement data NG
Measure.
Push key, and judge.
(iIf auto memory, reset setting, do
automtically.)
Red LED lights on, and buzzer
continues to sound.
(Even if auto memory, reset setting,
not memorize.)
To memorize data
Push key, memorize peak
value and measurement time. If it is
connected with printer, measurement
data is output.
To clear data
Push key, and clear
measurement data.
13
Tightening mode measurement
Inform tightening completion by green LED and buzzer. And
judge if tightening torque is within control width.
(OK : Upper limit Data Lower limit)
Set display mode"LED". (on delivery )
Set measurement mode"MODE-T", and input upper, lower limit,
tightening direction. If it reaches lower limit, inform tightening
completion. If it exceeds upper limit, inform by red LED. After
tightening push key, and judge OK/NG. For auto memory,
reset setting judge automatically. If OK, green LED turnes on, and
memorize data. If NG, red LED turns on, and buzzer continues to
sound. Push key to memorize measurement data as it is,
and push key to clear.
OK
(Upper limit Data lower limit)
Measure
If it reaches lower limit, inform by
green LED and buzzer.
If toruqe releases below 7.5% of max
measurement, LED and buzzer turn off.
Push key and judge.
Green LED turns on 0.5 sec.
Memorize peak value, and
measurement time.
If it is connected with PC/ printer,
measurement data outputs.
NG
(Data > Upper limit,Lower limit > data)
Measure.
If it reaches lower limit, inform green
LED and buzzer.
If it reaches upper limit, green LED
turns off, and red LED turns on.
If torque releases below 7.5% of max
measurement, buzzer turns off.
Push key and judge.
Buzzer continues to sound.
To memorize data
Push key, memorize peak
value and measurement item. If it is
connected with. printer, measurement
data is output. LED, and buzzer turn off.
To clear measurement data
Push key, and clear measurement
data. LED, and buzzer turns off.
TOHNICHI DIGITAL TORQUE WRENCH DATA TORK®MODEL CEM3
14
Measurement data readout
(Inspection mode, tightening mode)
Read measurement data.
: Count up, memory readout.
: Count down, memory readout.
Coutinue to push, and quick
reverse Push continuously count 15,
count +10 up, -10 down.
Example) Data readout of counter
200(Data exists)
Dsiplay time data 1 sec (T:M:S)
Note) Display time data (T:M:S) one
sec, and push quick reverse once
more, display next count shortly.
Example) Data readout of counter
200(No data)
Note) If no data memory, counter
sends without clock display and
readout.
15
TOHNICHI DIGITAL TORQUE WRENCH DATA TORK®MODEL CEM3
16
Calculation function
Calculate data quantity, max, min, average of measurement data
for indicating range.
Set counter to upper limit of
data range to calculate.
Push this key.
Example1) Case to calculate between 001-200
Set couter 200, push , and set STT 001.
Example2) Case to calculate between101-200
Set counter 200, push , and set STT101.
Set counter to lower limit
of data range to calculate.
Push
Cancel
Note) If M-2 mode and infrared output setting, lower limit of data
range can not be indicated. STTis fixed "1".
Note) Peak hold measurement data is the target for calculation data.
Push
Cancel
Push
Cancel
Push
Cancel
Push
Cancel
17
Measurement data output in a lump (PC, printer output)
Output measurement data(measurement data, date)of indicating
range to outside in a lump.
Set external output setting "PC" to output by RS C to PC(catalogue
No.575), "USB" to output by USB cable(catalogue No.584),and
"PRN" for printer. Set baud rate, too.
Set counter to upper limit of data
range to output.
Push this key.
Example1) Case to output data between 001-200.
Set counter 200, push , and set STT 001.
Example2) Case to output data between 101-200.
Set counter 200, push , and set STT 101.
Example3) Case to print out all measurement
data Set counter 999, push , and set STT 001.
Set counter to lower limit of data
range to output.
Push
Cancel
Output measurement data
transfers in a lump.
Output mode cancels.
Note) Push key to stop data output.
During data output other keys can
not be operated.
Transfer completion
Print example (M-3 mode printer output)
TOHNICHI DIGITAL TORQUE WRENCH DATA TORK®MODEL CEM3
18
Measurement data output in a lump (Infrared output)
Transfer measurement data of indicating range to DATA TANK.
(R-DT999)
Set external output "IFR" .
Set counter to upper limit of data
range to output.
Push this key.
Example1) Case to output data between 001-200.
Set counter 200, push , and set STT 001.
Example2) Case to output data between 101-200.
Set counter 200, push , and set STT 101.
Example3) Case to print out all measurement
data Set counter 999, push , and set STT 001.
Set counter to lower limit of data
range to output.
Push
Cancel
Note)If M-2 mode and infrared output setting, lower limit of
data range can not be indicated. STT is fixed "1".
Output measurement data
transfers in a lump.
Output mode cancels.
LED disappears during data transfer.
Note If stop data output, push CLEAR key.
During data output other keys can not be operated.
For M-3 mode count up
For M-2 mode count down
Transfer completion.
Set transmitting part to DATA TANK reception
part, and prepare DATA TANK to receive data.
Data output start
19
Measurement data memory clear
Clear measurement data.
(1):1 Data clear
Display data of counter to clear.
: Memory clear
Clear measurement data.
(2):Range designation clear
Set counter to upper limit of data
range to clear. Push this key.
Example1) Case to clear data between 001-200.
Set counter 200, push , and set STT001.
Example2) Case to clear data between 101-200.
Set counter 200, push , and set STT101 .
Example3) Case to clear all measurement data
Set counter 999, push , and set STT001.
Set counter to lower limit of data
range to clear.
Push and proceed next.
Do cancellation by this key.
Note) For M-2 mode and infrared output lower limit of range can
not be indicated. STTfixed "1".
On either display condition of left
picture push and push
next together.
Later release fingers from two
keys.
Measurement data clear
completion.
After clear return to start counter,
and go back to measurement
display.
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