Schmidt HTG Series User manual

Tension Meter
HTG Series
Model HTGS
HTGA
Edition HTG 02.E
Operating Instructions
Valid as of: 01.01.2022 - Firmware 5.0 or later • Please keep the manual for future reference!
S C H M I D T
c o n t r o l i n s t r u m e n t s

1
Precautions
Cautions of overload
●Please note that this unit will break down if the force exceeding capacity is applied irrespective of power
status.
●If the force exceeding approx. 110% of capacity is applied,
The following message shows up while the power is on.
In this case, please stop applying force immediately.
The sensor brakes down when it is overload.
●The sensor breaks down when apply force to bend or twist the measuring shaft.
Incorrect direction Big tensile and
compress force
Overload

2
Cautions of use
●Use this product only for measurement.
●Read these instructions before using this product. Use it based on this instruction.
●Avoid misuse or rough treatment.
●Do not disassemble or tamper with this product.
Cautions of storage
●Please avoid oil, dust, and heat and high humidity, and keep it in a cool place.
●Please keep it after use in attached carrying case to prevent from force or a shock Applying
to a measuring shaft.
●In case you remove the dirt of this unit, please do not use organic solvents, such as thinner.
●Very small electrical current is consumed also at the time of a power OFF.
Please use it after charging, when it is not used for a long period of time.
Cautions of an accuracy warranty
●Although based on operating frequency of force range, measurement accuracy deteriorates little by little.
We recommend periodical calibration.
●The specification temperature range of this is 0 to 40 Celsius degrees.
In order to carry out more exact measurement, please use it by temperature within the limits set to the
inspection certificate.
●Please turn on the power 10 minutes before starting measurement in order to stabilize the indication of
value.
Cautions on safety
●During destruction, breaking points, or performing another test where fragments could fly out, always
wear protection for the eyes and body.
●Be sure to use attached AC adapter. Otherwise, it may cause inaccuracy of measuring, fire,
or a breakdown.
Cautions on safety
●Ensure the screen saver function is on when you plan to use the force gauge continuously.
If the display is left on with the same display shown for a long time, the display may suffer from burn-in.
Error Messages
●The display may show error messages such as ‘MEMORY ERROR’or ‘FATAL ERROR’when there is a
damage found in the memory data or the setting data. There is a possibility of some internal problems.
Please contact our distributor.
Technical terms in this manual
●There are some phrase using “force”instead of “torque”, and “displacement scale”instead of “angle
scale”and “rotary encoder”in this manual.

3
Index
PRECAUTIONS .............................................................................................................................................. 1
FEATURES ..................................................................................................................................................... 4
1. MODELS ...................................................................................................................................................... 5
2. NAMES AND FUNCTIONS .......................................................................................................................... 6
3. ACCESSORIES............................................................................................................................................ 9
4. PREPARATION .......................................................................................................................................... 10
4.1. BATTERY AND CHARGE.............................................................................................................................. 10
4.2. CONNECTION OF DISPLAY AND SENSOR .......................................................................................................11
4.3. INSTALLATION OF AN ATTACHMENT ............................................................................................................. 12
5. BASIC OPERATION................................................................................................................................... 13
6. SINGLE DISPLAY / MULTI DISPLAY......................................................................................................... 14
6.1. SINGLE DISPLAY ........................................................................................................................................ 14
6.2. MULTI DISPLAY .......................................................................................................................................... 14
6.3. SETTING OF MULTI DISPLAY ....................................................................................................................... 14
7. INITIAL SETTING....................................................................................................................................... 17
9. MEASUREMENT OF DISPLACEMENT (HTGA ONLY).......................................................................... 25
10. PEAK VALUE ......................................................................................................................................... 28
11. 1ST / 2ND PEAK VALUE (HTGA ONLY) ................................................................................................ 29
12. OUTPUT ................................................................................................................................................. 30
12.1. OUTPUT TO USB MEMORY:HTGA SERIES ONLY ....................................................................................... 30
12.2. USB OUTPUT (OUTPUT TO PC) ................................................................................................................ 33
12.3. OUTPUT ON RS232C/USB...................................................................................................................... 34
12.4. ANALOG OUTPUT..................................................................................................................................... 35
12.5. WIRELESS TRANSMISSION ADAPTER (SOLD SEPARATELY)......................................................................... 36
13. MAINTENANCE...................................................................................................................................... 37
13.1. BATTERY CHANGE................................................................................................................................... 37
13.2. CALIBRATION AND REPAIR ....................................................................................................................... 38
14. WARRANTY ........................................................................................................................................... 38
15. SPECIFICATIONS .................................................................................................................................. 39
16. OPTIONAL ITEMS.................................................................................................................................. 40
17. DIMENSIONS.......................................................................................................................................... 42
18. OUTPUT DATA ....................................................................................................................................... 44
18.1. OUTPUT CONNECTOR .............................................................................................................................. 44
18.2. CONNECTION EXAMPLE OF I/O TERMINALS ............................................................................................... 46
18.3. FILE FORMAT SAVED IN THEN USB MEMORY (HTGA ONLY)....................................................................... 47
18.4. COMMAND (RS232C /USB) ................................................................................................................... 48

4
Features
HTGS/HTGA is an instrument for many purpose of torque measurement with useful functions and high
usability. HTGA is advanced model and there is function of input and output of angle from angle scale
and rotary encoder.
Organic EL display, on-demand multi display and information in English lead easy operation.
The high speed data sampling (2000 data / sec.) also helps more accurate measurement even
for the measurement of sudden force change such as destruction test.
The accurate graph can be made with optional software, which supports evaluation and analyze
of measurement.
Please make sure to thoroughly read this instruction manual before use to obtain the maximum benefit
from this instrument.

5
1. Models
HTGA/HTGS series consists of HTGA series with USB memory connection and displacement output
function, and HTGS series without the connection and function.
The separated sensor models are also available.
Model Capacity Display Resolution
HTGS(HTGA)-0.5N 50N-cm 50.00N-cm 0.01N-cm
HTGS(HTGA)-2N 2N-m 2.000N-m 0.001N-m
HTGS(HTGA)-5N 5N-m 5.000N-m 0.001N-m
HTGS(HTGA)-10N 10N-m 10.00N-m 0.01N-m

6
2. Names and Functions
An amplifier unit
Functions
1
ON/OFF button
Turn ON/OFF the power. Select menu.
2
ZERO button
Zero values. Select menu.
3
PEAK button
Toggle between “Peak mode” and “Track mode”. Select menu.
4
SEND button
Save data. Send data to a printer and a computer. Select menu.
5
MENU button
Go to Set up mode and measurement mode. Enter settings.
6
Display
Show values, settings and the status.
7
Comparator
Judgment LED
Judge force values according to set comparator values.
8
Connector
Connector for sensor
9
AC adaptor
connector
Recharge battery with AC adaptor.
10 USB connector For data sending to PC with USB cable (included).
HTGA only: Save data on USB memory (excluded).
11 I/O connector
Connector for other equipments, i.e. PC, printer, and displacement
scale.
12
Battery cover
Rechargeable battery inside. The battery can be replaced. (*)
*Refer to the page 37.
* The design of operation panel is different between HTGS and
HTGA.

7
2.Names and Functions
Display
①②③①②⑥⑦③
④⑥⑦⑤④⑤
①Battery / Battery status
②Displacement value zero / Valid or invalid: Zero displacement value at arbitrary force value.
(Refer to page 20, [8.Function Setting, Displacement reset]) (*)
③Auto Zero Timer / Valid or invalid: Zero force value after arbitrary time.
(Refer to page 20, [8.Function Setting, Auto Zero Timer])
④Peak mode / Valid or invalid (Refer to page 20, [8.Function Setting, Auto Zero Timer])
(Refer to page 20, [8.Function Setting, Peak Functions])
⑤Unit / Measurement units
⑥Data hold / Valid or invalid: Holding measuring values.
([Hold] is displayed instead of [mem] on Multi display, while holding values.)
⑦USB memory / On: Connected, Flashing: Sending data.
([mem] is displayed on Simple display, while USB memory is connected.)
⑧Header / (Refer to page 14, [6.Single display / Multi display])
⑨Middle display
⑩Footer / (Refer to page 14, [6.Single display / Multi display])
* Only for HTGA
Screen Saver function
This force gauge equips with a screen saver function.
It shows a moving image (right) on its screen when the force gauge
is on but is not being used for a certain time for the protection of the
screen.
Press Menu button to close the screen saver display.
To set up the time to activate this function, go to [Function Setting] - [Display Functions] - [Screen
Saver].
* When it is set OFF, the screen saver function does NOT work.
Note that no button works except Menu button while the screen saver is on.
It continues to send signals or transfer data to PC for graphing even when the screen saver is on.
Single Display
Multi Display
⑧
⑨
⑩

8
A sensor unit
Sensor shaft Installing an attachment to this sensor shaft
Sensor grip Hold this part for measurement
Sensor connector Connector for connecting with display
●Do not loose or tighten nut of this sensor. If you loose of tighten this, it may affect the
accuracy of this sensor.
* Do not loose or tighten this nut.
Sensor shaft
Sensor grip
Sensor connector

9
3. Accessories
The following accessories are included. Make sure to keep them in the carrying case.
Carrying case is necessary when transport to protect the torque gauge.
●Instruction manual (This book)
●Inspection certificate
●Warranty
●AC adapter
●Carrying case
●USB cable
●CD-ROM
●Force Recorder Professional Trial Edition CD-ROM (30 days limits)
●Adapter for USB memory (HTGA only)
●Optional handle (Available for 10N-m model only)
●L wrench for installation of attachment

10
4. Preparation
4.1. Battery and Charge
Please charge before your first use of this product.
Charging completes in approximately 2 hours when using the included AC adaptor.
The battery icon shows the 3 remaining levels. It appears after the power is turned on.
Please recharge when it shows .
It shows an animation of charging while connected with the AC adaptor.
appears once the battery is full and it automatically stops recharging.
●Make sure to use the included AC adapter only.
The accuracy is not guaranteed and break down and fire may occur when use other
AC adapters.
●The battery may be dying when charged power is low or not charged at all.
Replacement of battery is recommended. Please refer to the page 37.
●Please note the date and time setting is reset when battery dies and replaced.
●When AC adaptor remains connected, it automatically starts recharging again.
●The product may temporarily get warm while recharging.
●When the product is connected to PC with the USB cable, it shows and start
recharging regardless of the remaining level of battery. Recharging this way takes longer
and the required period of time varies depending of the PC.
●It shows flashing and the power goes off automatically when the battery is empty.
●When connecting a USB memory stick, a liner scale, or a test stand, the power is
supplied from this product. Please use it with AC adaptor connected for such
measurement as the battery runs out quicker.

11
4. Preparation
4.2. Connection of display and sensor
Please connect sensor and display before use.
●A display unit is calibrated with included sensor. Please do not connect other sensor.
●Do not insert the connector forcibly.
A sensor unit
Connector
A display unit

12
4.3. Installation of an attachment
Please install suitable attachment to sensor unit.
Below image is for installation of HT-DC-6.5.
After inserting an attachment to sensor shaft, please fix the attachment with included set screw.
●Please pay attention that attachment may fall down if the set screw is not fixed.
●It is not necessary the set screw to tighten too strong
Included set screw

13
5. Basic Operation
The display indicates either clockwise or counter-clockwise torque.
The measurement is done on Peak mode or Track mode.
Functions Operation Description
Power on
Press
Turn on power.
The introduction message shows up first,
and measurement can be started after
the message disappears.
The introduction message and
multi display (Header) show time setting.
Shut off
Hold for
more than
one second.
Turn off power.
Zero values
Press
Zero values.
Refer to the page 17 for detail.
Peak / Track mode
Press Toggle Peak mode and Track mode.
Memory saving /
Data sending
Press
Save data to the internal memory.
Enable to send data to PC and
other equipments at the same time.
Refer to the page 17 for detail.

14
6. Single display / Multi display
Select either Single display or Multi display.
Refer to the page 20 for detail of toggling.
6.1. Single display
Display torque value only.
*Displacement value can be checked on
Multi display (HTGA only).
Single display
6.2. Multi display
Display torque value on the middle display.
The contents on the header and footer
are selectable.
Multi display
6.3. Setting of Multi display
Press (MENU button) at measurement-ready display and header lights on.
Press (SEND, PEAK button) to select contents while lighting on.
Press (MENU button) and the footer lights on.
Press (SEND, PEAK button) to select contents while lighting on.
Press (MENU button) and go back to measurement-ready display.

15
6. Single display / Multi display
Refer to the page 17 for how to set.
Multi Display：Menu on header
Contents Description Valid Model
Header
Date Date HTGA/HTGS
Time Time HTGA/HTGS
Number
of memory
The number of saved force value. HTGA/HTGS
Number of +NG
The number of force torque exceeding set
comparator (High) value. Zero with (ZERO button)
while this content lights on.(*)
HTGA/HTGS
Displacement
Displacement. Zero with (ZERO button)
while this content lights on.(*)
HTGA
Average
values
of memory
Average of saved force value. Unit is disregarded.
It shows **** when the data contains different units or
positions of decimal points.
HTGA/HTGS
* Angle scale or rotary encoder is necessary to indicate displacement.

16
Multi Display：Menu on footer
Contents Description Valid Model
Footer
Comparator
High /
Low values
Set comparator High / Low values. Enable to
set the values with (MENU button) while this
content lights on. Change values with
(ON/OFF,ZERO button) and enter with (MENU
button).
HTGA/HTGS
+/- Peak
Torque peak value. Zero with (ZERO button) while
this content lights on. Show either or both peak value of
clockwise / counter-clockwise directions, depending on
[AND][OR] selection.
Refer to the page 22.
HTGA/HTGS
1st / 2nd Peak
1st and 2nd torque peak value. Zero with (ZERO
button) while this content lights on.
P1 shows 1st, and P2 shows 2nd peak values.
HTGA
Force bar graph The rate of torque value among capacity. HTGA/HTGS
The latest
memory value
Show the latest memory data. Press (MENU
button) to show all the memory data with
(ON/OFF, ZERO button) while this content lights on.
HTGA/HTGS
Max. / Min.
values
of memory
Show maximum and minimum values among memory
data.
Torque data only.
HTGA/HTGS

17
7. Initial Setting
1.Turn off power.
2.Hold
（MENU button）and turn on power with （ON/OFF button）.
3.Select menu in Main menu with
（ON/OFF,ZERO buttons）,and go to Sub menu with
（PEAK button）.(Some menu doesn’t have Sub menu.)
4.Select menu in Sub menu with
（ON/OFF,ZERO buttons）,and go to Setting menu with
（PEAK button）.Go back to Main menu with （SEND button）.
5.Select menu in Setting menu with
（ON/OFF,ZERO buttons）,and enter the setting with
（MENU button）.
（The setting can be saved only when entered with MENU button.）
6. The display automatically goes back to Sub menu after entering.
Go back to Main menu with （SEND button）.
7. Push to show ‘Exit Menu’and go back to measurement-ready display with
(MENU button）.
*Push and hold (MENU button）more than 2 seconds for the same action.
Initial Setting(Setup Menu)
Main menu Sub menu Setting menu Description Valid
model
Initial
setting
Model info. －－
Firmware Ver5.0 or later supports
the display of product model name /
serial number / product code.
This information is required to
receive our after support.
Please also refer to the model
information on the instrument body
and carrying case.
HTGA /
HTGS
－

18
Main menu Sub menu Setting menu Description Valid
model
Initial
setting
Units
Force Units
[N-m] / [N-cm]
[Kgf-cm] /
[lbf-in] /
[ozf-in]
（*1）
Change torque units. HTGA /
HTGS N-m
Displacement
Units
[°] / [inch] /
[mm]（*1）Change displacement units HTGA °
+/- Indicator
+/- Force [+/-Normal] /
[+/-Reverse]
Change +/- signs of torque value.
[Normal]
(+)clockwise、
(-)counter clockwise
[Opposite]
(+)counter clockwise、
(-)clockwise
HTGA /
HTGS Normal
+/-
Displacement
[+/-Normal] /
[+/-Reverse]
Change +/- signs of displacement
value. HTGA Normal
Sensitivity －
[Max] /
[High] /
[Medium] /
[Low]
Change sensitivity of torque
measurement. [Max] is the highest
sensitivity. [Max] is suitable for rapid
change like impact test.
HTGA /
HTGS Max
Displacement
Type
－
[OFF] /
[Type A] /
[Type B] /
[Type C] /
[Type D] /
[Type E] /
[Manual]
Select when connect with
displacement scale.
Enable to manually set at
[Manual].Refer to the page 25 for
detail.
HTGA OFF
Zero / Tare
Reset
－[All reset] /
[Peak only]
Select zero contents.
[All reset]:
Zero all the displayed values.
[Peak only]:
Press the button to zero peak value.
Hold the button to zero the
measuring torque value.
Displacement value is not reset.
HTGA /
HTGS All reset
*1 Selectable units differ between Japan model and non-Japan model

19
7. Initial Setting
Main menu Sub menu Setting menu Description Valid
model
Initial
setting
Send function Send Data
Select
[Display value]
[+Peak] /
[-Peak] /
[+/-Peak] /
[1st Peak] /
[2nd Peak] /
[1st/2nd Peak]
Select data sent to external equipment.
[Display value]: Send displayed value. On
multi display the value on the middle display
is sent.
[+Peak]: Send + Peak value.
[-Peak]: Send - Peak value.
[+/-Peak]: Send + and - Peak values.
[1st Peak]: Send 1st Peak value.
[2nd Peak]: Send 2nd Peak value.
[1st / 2nd Peak]: Send 1st and 2nd Peak
values.
Refer to the page 28-29 for detail.
HTGA /
HTGS
（*2）
Display
value
Ext-Input
Invert
[ON] /
[OFF]
Choose signal setting of SEND input from
outside.
OFF: Read edge when connected to GND.
ON: Read edge when departed GND.
Date Format ―
[YYYY/MM/DD] /
[MM/DD/YYYY] /
[DD/MM/YYYY]
Select display type.
Y:Year,M:Month,D:Date
HTGA /
HTGS
YYYY/
MM/
DD
Language ―[English]
And more
Select languages. HTGA /
HTGS English
Setting LOCK ―[ON] /
[OFF]
It prevents unintentional changes of
settings. When it is ON, function setting
menu would not show therefore the settings
such as comparator cannot be changed. Set
it [OFF] to unlock.
HTGA /
HTGS OFF
Wireless
setting
Wireless
output
[ON] /
[OFF]
Enables the wireless transmission adapter.
* See the optional instruction manual.
HTGA /
HTGS OFF
ID-Symbol [A] –[Z] A symbol for identifying a measuring
instrument. You can select from A to Z.
HTGA /
HTGS [A]
*2 The function of 1st / 2nd Peak is valid only for HTGA.
In addition,the selected data is memorized into
the inner memory when press[SEND],and sent
to external equipments via USB/RS232C