Tablet Hardness Tester TBH 125

Tablet Hardness Tester TBH 125
Instruction Manual
Tablet
Hardness Tester
TBH 125
ERWEKA GmbH · Ottostr. 20-22 · 63150 Heusenstamm · Germany · Tel: +49 (0) 6104 6903-0
Directors: Claudia Müller, Werner G. Müller · District court Offenbach HRB 2382
Fax: +49 (0) 6104 6903-40 · E-mail: info@erweka.com · www.erweka.com
Document version: 4.1
Date: 2017-03-07
Firmware version: from 1.45
Document No.: 21039
File name: TBH 125_Manual_21039_En_V4.1
Language: English
Number of pages: 36
Version table
Date
2012
2015-02-26
2015-09-18
2016-01-28
Document
version*
1.0
2.0
2.1
3.0
2016-02-22
2016-11-23
2017-03-07
3.1
4.0
4.1
Amendment
AutoCal 2.0
Editorial revision
Firmware version increase; new Document No.
(old No.:690-309-0001), new format (11/15)
Editorial revision
TBH 125P cancelled
Editorial revision
* When the document version X.Y was changed, X means a technical change and Y – a document amendment only.
Copyright
The material in this document is the intellectual property of ERWEKA. Any copy or reproduction of this
document or its parts without the written permission of and reference to ERWEKA is prohibited and will
be prosecuted according to the law. All trademarks are the property of their respective owners.
Copyright© 2017 by ERWEKA
Instruction Manual
Tablet Hardness Tester
TBH 125
4
TBH 125
Table of Contents
1 – Introduction
1.1 – About this instruction manual
1.2 – Service
1.3 – Safety instructions and symbols
1.4 – Protection of the environment
5
5
5
6
6
2 – Safety
2.1 – Safety instructions
2.2 – Intended use
7
7
7
3 – Overview
3.1 – Description
3.2 – Device types
3.3 – Type label
3.4 – Construction
3.5 – Operation elements and connections
3.5.1 – Keypad and display
3.6 – Technical data
8
8
8
8
9
9
10
11
4 – Installation
4.1 – Storage and transport conditions
4.2 – Unpacking and checking
4.3 – Setup
4.3.1 – Positioning
4.3.2 – Acclimatization
4.3.3 – Required installation environment
4.4 – Device connecting and first switching on
12
12
12
12
12
12
12
13
5 – Configuration
5.1 – The SETT menu
5.2 – Pause
5.3 – Calibration position
5.4 – Hardness units
5.5 – Diameter and thickness units
5.6 – Hours
5.7 – Minutes
5.8 – Day
5.9 – Month
5.10 – Year
5.11 – Newton Factor
5.12 – Language
5.13 – Version
5.14 – Date format
5.15 – Method
5.16 – Terminology
5.17 – Automatic determination
5.18 – Printer
5.19 – Printer language
5.20 – Automatic measurement
5.21 – Data output
5.22 – Hardness
5.23 – Diameter
5.24 – Thickness
15
15
16
16
16
16
16
16
17
17
17
17
17
17
18
18
18
18
19
19
19
19
20
20
20
6 – Setting the Speed
20
7 – Setting the Force
21
21039 - 4.1
8 – Switching the Printer on/off
21
9 – Calibration
9.1 – Diameter calibration
9.2 – Hardness calibration
9.2.1 – Static calibration
9.2.2 – Dynamic calibration
22
22
23
23
24
10 – Control
24
10.1 – Diameter
25
10.2 – Hardness
25
10.2.1 – Control of the static hardness calibration 25
10.2.2 – Control of the dynamic hardness calibration
26
11 – Performing the Measurements
27
12 – Results
28
13 – Statistics
28
14 – Maintenance
14.1 – Cleaning
14.2 – Inspection and maintenance
14.3 – Spare parts 29
29
29
29
Appendix
Example printouts of the protocols
31
31
TBH 125 – Introduction5
1 – Introduction
Thank you for purchasing the ERWEKA tablet hardness tester TBH 125 series!
1.1 – About this instruction manual
This instruction manual supports you in work with your ERWEKA device. It describes the device, its operation and
gives you useful tips on its handling. Furthermore, read descriptions of installation and setting as well as detailed
step-by-step work operations in the present manual. Pictures facilitate the understanding of processes described
here.
The instruction manual is a part of the product. Read this manual completely and make sure you understand its content. Keep this manual in a safe place so that it will be available for any questions at
a later date. This is important for warranty of permanent and accurate operation of the corresponding
device.
The editorial team of ERWEKA appreciates your feedback regarding the present manual. Just send an
e-mail to quality@erweka.com with your topic and “technical documentation” as a subject. Your reply
contributes to our high quality level.
1.2 – Service
Contact ERWEKA at support@erweka.com to receive the firmware updates, order the spare parts, in case of technical
troubles or possible repairs. Please supply the following information:
• Type of the device (on the type label)
• Serial number of the device (on the type label)
• A short description of the case
21039 - 4.1
6
TBH 125 – Introduction
1.3 – Safety instructions and symbols
WARNING indicates a possible hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION indicates a possible hazardous situation which, if not avoided, could result in moderate or
minor injury.
HAZARD of electric shock! Indicates a possible hazardous situation which, if not avoided, can lead
to injuries due to electric shock.
This symbol indicates a possible hazardous situation which, if not avoided, can lead to the equipment
damage.
This symbol emphasizes the information to ensure smooth work process.
This symbol provides you with additional useful information.
1.4 – Protection of the environment
Note that residues of the test products must be properly disposed of in accordance with the applicable environmental
regulations. According to the valid EC directives, all the electrical parts (electrical waste) must be disposed of appropriately.
21039 - 4.1
TBH 125 – Safety7
2 – Safety
2.1 – Safety instructions
To guarantee the health and safety, read the following safety instructions before using the device.
WARNING
Wear the personal protective outfit and glasses, if necessary!
HAZARD of electric shock! Electric devices are to be plugged into safety sockets only. Use the
delivered power cable. The voltage of the existing current supply is to be compared to the indications
on the type label.
Before installation works always switch the corresponding device off and disconnect it from the rear
panel.
ERWEKA devices should be operated by qualified and trained personnel only!
Pay attention to the on-site safety instructions for work in the laboratory and with the laboratory equipment!
2.2 – Intended use
The ERWEKA hardness tester type TBH 125 should be used only for performing hardness tests (optional diameter
and thickness measurements), associated verification and quality control of tablets. The requirements for installation
environment defined by ERWEKA shall be met.
ERWEKA devices should not be used for processing:
• products that are easily flammable or explosive
• products that develop vapours which may create flammable or explosive mixtures in combination with air
• products that release harmful or poisonous substances
The device should be operated and maintained only as it is foreseen and due to the instructions presented in this
manual.
21039 - 4.1
8
TBH 125 – Overview
3 – Overview
3.1 – Description
The ERWEKA hardness tester type TBH 125 series is a compact device for the automatic measurement of hardness
and optionally diameter and thickness of tablets and similar dosage forms.
The hardness test of tablets plays an important role in their formulation and production. The hardness test can be
performed with the TBH 125 based on two different measurement principles (constant speed, constant force).
The device has been developed for customers who require robust design and easy handling. It is equipped with a
membrane keypad and two LED-displays. During a test run up to 99 tablets can be tested.
The tablet hardness tester can be calibrated easely using the menu.
A printout of test reports from the device is possible through a printer (opt.).
3.2 – Device types
Function
TBH 125
TBH 125 D
TBH 125 TD
Hardness test
+
+
+
Diameter measurement
-
+
+
Thickness measurement
-
-
+
3.3 – Type label
The type label is placed on the rear panel of the device and looks as follows:
ERWEKA
R
GmbH
D-63150 Heusenstamm / Germany
Typ:
PN :
21039 - 4.1
Serial No: xxxxxx.xxxx
VA IN :
A U:
V F:
Hz
Typ: Device type
Serial No: Serial number
PN: Normal output in volt-ampere [VA]
IN: Nominal current in ampere [A]
U: Voltage in volt [V]
F: Frequency in hertz [Hz]
TBH 125 – Overview9
3.4 – Construction
2
1
3
1
2
3
Measurement station
Control panel
USB connections
3.5 – Operation elements and connections
A
B
D
E
F
Device front panel
A
B
C
Mains switch
D
Measurement station
E
Collection container (optional) F
C
Device rear panel
Power supply
USB connections
Keypad with two displays
21039 - 4.1
10
TBH 125 – Overview
3.5.1 – Keypad and display
Pict: Keypad with left and right LED display
Key symbol
Description/Function
Arrow keys; to scroll the menus or submenus and select the values
The Stop/Exit key; to abort or stop a test as well as exit the current menu
The Start/Enter key; to start a test and open a selected menu
All data inputs are confirmed with a beep tone.
21039 - 4.1
TBH 125 – Overview11
3.6 – Technical data
TBH 125 series
Dimensions:
Height
Width
Depth
Weight:
160 mm
310 mm
300 mm
6 kg
Display/ keypad:
2 x 4 digit 16-segment LED display,
touch foil keypad
Measuring principle:
Load cell with strain gauge, constant speed (0.50 – 3.00 mm/s) or constant force (10 – 200
N/s) with stepper motor, setting of automatic diameter measurement
Throughput:
1 – 99 samples per test, selectable
Hardness measurement station:
10 – 300 N (optional 10 – 500 N)
Accuracy: ± 1 N, Newton, Kilopond or Strong Cobb selectable
Diameter measurement station (optional):
2 – 28.00 mm
Accuracy: ± 0.05 mm, mm or inch selectable
Thickness measurement station (optional):
0.10 – 28.00 mm
Accuracy: ± 0.05 mm, mm or inch selectable
Power supply:
100 – 240 VAC ± 10 % / 50 – 60 Hz / 100 W
Safety:
Protection class: I / EN 61140
Protection type:
IP 21 / IEC 529
Fuses:
115 V / 250 V, 2 x 3.15 A
Interfaces:
USB A for printer connection, USB B for updating via PC,
optional RS 232 for data output
Printer:
Compatible printer available upon request
Calibration:
Completely menu guided, weights (static calibration)
Optional: AutoCal 2.0 (dynamic calibration)
Documentation:
Available through printer
21039 - 4.1
12
TBH 125 – Installation
4 – Installation
4.1 – Storage and transport conditions
The device should not be exposed to punches and vibrations.
Temperature and humidity should not be lower or higher than the values defined by ERWEKA (see
4.3.3 – Required installation environment).
4.2 – Unpacking and checking
After receipt of the delivery, check the packaging and the device for transport damage. Check the tilt indicator label,
if it is available, for undue turning of the packaging. At a gradient of 60° colored quartz sand flows into the display
field and remains visible there.
If the undue transport or any damage is evident, take a photo of this and send it to our ERWEKA
1.2 – Service immediately.
4.3 – Setup
4.3.1 – Positioning
Position the device on a horizontal, plane, stable surface, e.g. on a laboratory table, and pay attention not to displace
it during operation.
For ease-of-use and accessibility, when positioning the device ensure that there is sufficient distance
towards walls, cabinets or other fixed components of the facility.
Besides sticking to the requirements for installation environment defined by ERWEKA, avoid the following:
• Heat (heating, insolation)
• Direct draft through open windows, doors or air conditioning and ventilating systems
• Vibrations
• Dampness
4.3.2 – Acclimatization
If a cold device is moved to a warm environment, condensation may occur. Therefore you should allow the device to
acclimatize for approximately two hours at room temperature, leaving it unplugged.
4.3.3 – Required installation environment
Ambient temperature in operation:
Storage and transport temperature:
Relative humidity:
Max. operating altitude (for balances):
21039 - 4.1
+10°C up to +30°C
-10°C up to +55°C
25-80% no condensation
3000 m above NN
TBH 125 – Installation13
4.4 – Device connecting and first switching on
Connect the device (connection on the device’s rear panel) with a safety socket. For this purpose use the delivered
power cable.
HAZARD of electric shock! Electric devices are to be plugged into safety sockets only.
The voltage of the existing power supply has to meet the requirements of the type label!
ERWEKA accepts no liability in case of wrong connection.
Defective devices are to be opened by the authorized staff only.
In case of using an external printer, connect it to the USB A interface of the device.
Switching on
For switching on set the main switch on the device rear panel to the I position (on).
After successful device initialization the splash screen is shown.
Zeroing
The device must be zeroed after each switching on.
The splash screen is shown.
Press the Start/Enter key to start the procedure of zeroing.
“ZERO” is shown.
CAUTION
Squashing! While zeroing the test jaw moves. Do not touch the test station.
21039 - 4.1
14
TBH 125 – Installation
To zero the device, press the Start/Enter key.
The jaw moves to the counter-jaw, takes the zero point and returns to its initial position.
After successful determination of the device’s zero point (automatic repetition of zeroing in case of error), the number
of the last measurement is displayed, see example:
This display means also that
• the device is ready for operation
• the device can be calibrated
• the device can be configured as needed
Scroll the menus using the arrow keys on the left.
Menu
REST
STAT
SPED
FORC
PRIN
CALI
CONT
SETT
Function
Display of the test results.
Display of the evaluations or statistics.
Setting of the constant speed in mm/s.
Setting of the constant force in N/s.
Switching the printer on/off or repeating a printout.
Calibration of the hardness and diameter test stations
(depending on the device option, see calibration).
Control measurements for calibration.
Configuration of the device.
Switching off
For switching off set the mains switch to the 0 position (off).
More information on the configuration and test performance you will find in the following chapters of
this instruction manual.
21039 - 4.1
TBH 125 – Configuration15
5 – Configuration
5.1 – The SETT menu
This menu guides you through the device configuration. In the menu items you can set the corresponding parameters.
To enter the SETT menu:
1. Using the left arrow keys select SETT on the ready-for-operation device.
2. Press the Start/Enter key for at least 8 seconds.
Scroll through the configuration menu with the left arrow keys.
Menu item
PAUS
CPOS
UNIH
UNID
HOUR
MINU
DAY
MONT
YEAR
NFCT
LANG
VERS
DATF
METH
TERM
AUTO
PRIN
PRLG
AUME
DOUT
HARD
DIAM
THIC
Function
Pause
Calibration positions
Hardness units
Diameter and thickness units
Hours
Minutes
Day
Month
Year
Newton factor
Language
Version
Date format
Measurement method
Terminology
Automatic determination
Printer
Printer language
Automatic measurement
Data output
Hardness
Diameter
Thickness
Read the information on each menu item below.
21039 - 4.1
16
TBH 125 – Configuration
5.2 – Pause
5.5 – Diameter and thickness units
In the PAUS menu item the time between the measurement cycles is set. The operator needs a certain time
between the measurements to clean the test station and
restock it with a new sample.
In the UNID menu item set the measurement unit for diameter and thickness.
1. Using the left arrow keys select the UNID item in the
SETT menu.
1. Using the left arrow keys select the PAUS item in the
SETT menu.
2. Using the right arrow keys select the required measurement unit.
2. Using the right arrow keys select the required pause
time [s].
Adjustment range of pause time: 0 - 10 seconds
You can select millimeter (MM) or inch (INCH).
3. Confirm your selection with Start/Enter.
3. Confirm your selection with Start/Enter.
5.6 – Hours
5.3 – Calibration position
In the CPOS menu item the calibration position is set.
ERWEKA recommends setting 0.
The HOUR menu item belongs to the time setting. Set
the hours here.
1. Using the left arrow keys select the HOUR item in the
SETT menu.
1. Using the left arrow keys select the CPOS item in the
SETT menu.
2. Using the right arrow keys select the required value
for hours.
2. Using the right arrow keys select the required calibration position.
3. Confirm your selection with Start/Enter.
3. Confirm your selection with Start/Enter.
5.7 – Minutes
5.4 – Hardness units
In the UNIH menu item set the measurement unit for
hardness.
The MINU menu item belongs to the time setting. Set the
minutes here.
1. Using the left arrow keys select the MINU item in the
SETT menu.
1. Using the left arrow keys select the UNIH item in the
SETT menu.
2. Using the right arrow keys select the required value
for minutes.
2. Using the right arrow keys select the required measurement unit.
You can select Newton (N), Strong Cobb (SC) or
Kilopond (KP).
3. Confirm your selection with Start/Enter.
21039 - 4.1
3. Confirm your selection with Start/Enter.
TBH 125 – Configuration17
5.8 – Day
5.11 – Newton Factor
The DAY menu item belongs to the date setting. Set the
day here.
In the NFCT menu item you can read the Newton factor,
but not change it!
1. Using the left arrow keys select the DAY item in the
SETT menu.
1. Using the left arrow keys select the NFCT item in the
SETT menu.
2. Using the right arrow keys select the required day.
2. Press Stop/Exit to return to the SETT menu.
3. Confirm your selection with Start/Enter.
5.9 – Month
The Newton factor is an internal calibration factor for the load cell and electronics. This value is saved after each calibration in the device‘s memory.
The MONT menu item belongs to the date setting. Set
the month here.
1. Using the left arrow keys select the MONT item in the
SETT menu.
5.12 – Language
In the LANG menu item you can select German or English as a menu language.
1. Using the left arrow keys select the LANG item in the
SETT menu.
2. Using the right arrow keys select the required month.
3. Confirm your selection with Start/Enter.
5.10 – Year
The YEAR menu item belongs to the date setting. Set the
year here.
1. Using the left arrow keys select the YEAR item in the
SETT menu.
2. Using the right arrow keys select the required
language (GERM or ENGL).
3. Confirm your selection with Start/Enter.
5.13 – Version
In the VERS menu item you can read the firmware version
number, but not change it!
2. Using the right arrow keys select the required year.
1. Using the left arrow keys select the VERS item in the
SETT menu.
3. Confirm your selection with Start/Enter.
2. Press Stop/Exit to return to the SETT menu.
21039 - 4.1
18
TBH 125 – Configuration
5.14 – Date format
5.16 – Terminology
In the DATF menu item you can select the European or
American date display format.
In the TERM menu item you can select between calibration/control and justification/calibration. The terminology
change is shown in the corresponding device menus and
protocols.
1. Using the left arrow keys select the DATF item in the
SETT menu.
1. Using the left arrow keys select the TERM item in the
SETT menu.
2. Using the right arrow keys select the required date
format.
(EURO = Day:Month:Year = DD/MM/YYYY or
USA = Year:Month:Day =YYYY/MM/DD)
2. Using the right arrow keys select the required terminology.
3. Confirm your selection with Start/Enter.
3. Confirm your selection with Start/Enter.
5.17 – Automatic determination
5.15 – Method
In the METH menu item you can set the measurement
method for hardness.
When using the automatic determination function you do
not need to enter the nominal thickness and diameter
before the test because the device determines them automatically.
1. Using the left arrow keys select the METH item in the
SETT menu.
1. Using the left arrow keys select the AUTO item in the
SETT menu.
2. Using the right arrow keys select the required measurement method.
2. Using the right arrow keys select the ON option to
switch this function on.
(SPED = constant speed or FORC = constant force)
3. Confirm your selection with Start/Enter.
21039 - 4.1
3. Confirm your selection with Start/Enter.
TBH 125 – Configuration19
5.18 – Printer
5.20 – Automatic measurement
In this menu item select the printer type according to
the used printer. Select between internal (built-in) and
external (conventional, e.g. HP® LaserJet or portable,
e.g. Martell) printer. The printed protocols differ (see
Appendix).
In this menu item activate or deactivate the automatic
measurement for each tablet.
This function is available for devices of
TBH 125 TD type only.
1. Using the left arrow keys select the PRIN item in the
SETT menu.
1. Using the left arrow keys select the AUME item in the
SETT menu.
2. Using the right arrow keys select the required printer
type.
2. Using the right arrow keys select the ON option to
activate this function.
3. Confirm your selection with Start/Enter.
3. Confirm your selection with Start/Enter.
5.19 – Printer language
In this menu item select the printer language according
to the used external printer. For a conventional printer
(e.g. HP® LaserJet) select PCL and for a portable printer
(e.g. Martel) select ASCII.
1. Using the left arrow keys select the PRLG item in the
SETT menu.
When activating this function the pause
in the PAUS submenu is set to 0 (see
5.2 – Pause).
5.21 – Data output
The data transfer from the device to a PC is optionally
possible. In case of this option a RS 232 interface is available on the rear panel of the device.
In this menu item activate the RS 232 interface for data
output.
1. Using the left arrow keys select the DOUT item in the
SETT menu.
2. Using the right arrow keys select the required printer
language.
3. Confirm your selection with Start/Enter.
2. Using the right arrow keys select the ON option to
activate this function.
3. Confirm your selection with Start/Enter.
For the data transfer the PC must be
connected with the device through the
RS 232 interface on the rear panel of the
device. If the RS 232 interface (option) is
not available on the device, deactivate
the DOUT menu item.
21039 - 4.1
20
TBH 125 – Setting the Speed
5.22 – Hardness
Activate this function to enable the hardness measurement.
1. Using the left arrow keys select the HARD item in the
SETT menu.
2. Using the right arrow keys select the ON option to
activate this function.
3. Confirm your selection with Start/Enter.
5.23 – Diameter
3. Confirm your selection with Start/Enter.
Activate the function of automatic
measurement in the AUTO submenu not to enter the nominal thickness during the measurement (see
5.17 – Automatic determination).
6 – Setting the Speed
In the SPED menu set the measurement speed of the
movable jaw. The selected measurement speed is printed out in the test protocol.
Adjustment range: 0.05 - 3.00 mm/s
The default value is 2.3 mm/s.
Activate this function to enable the diameter measurement.
1. Using the left arrow keys select the DIAM item in the
SETT menu.
Precondition for the use of this menu is
the selection of the “constant speed”
measurement method in the METH item
of the SETT menu (see 5.15 – Method).
1. Using the left arrow keys select SPED on the
ready-for-operation device.
2. Using the right arrow keys select the ON option to
activate this function.
3. Confirm your selection with Start/Enter.
Activate the function of automatic
measurement in the AUTO submenu not to enter the nominal diameter during the measurement (see
5.17 – Automatic determination).
2. Using the right arrow keys select the required speed.
3. Confirm your selection with Start/Enter.
5.24 – Thickness
Activate this function to enable the thickness measurement.
1. Using the left arrow keys select the THIC item in the
SETT menu.
2. Using the right arrow keys select the ON option to
activate this function.
21039 - 4.1
Comparability of the product break
results is only ensured when using the
same settings of the speed!
TBH 125 – Setting the Force21
7 – Setting the Force
8 – Switching the Printer on/off
In the FORC menu set the force of the hardness measurement. The selected force is printed out in the test
protocol.
In PRIN menu switch the connected printer for printing
the test protocols on/off.
Adjustment range: 10 - 300 N/s
1. Using the left arrow keys select PRIN on the
ready-for-operation device.
The default value is 20 N/s.
Precondition for the use of this menu
is the selection of the “constant force”
measurement method in the METH item
of the SETT menu (see 5.15 – Method).
1. Using the left arrow keys select FORC on the
ready-for-operation device.
2. Using the right arrow keys select the ON option to
activate the printer.
3. Confirm your selection with Start/Enter.
4. Press Start/Enter to repeat the last printout during
the device operation.
2. Using the right arrow keys select the required force.
3. Confirm your selection with Start/Enter.
Comparability of the product break
results is only ensured when using the
same settings of the force!
21039 - 4.1
22
TBH 125 – Calibration
9 – Calibration
The device must be calibrated regularly. The user must
define the interval for this.
In case of high or unexpected measurement deviations a calibration must
be performed immediately, even if it is
outside the interval!
The CALI menu contains the DIAM and HARD items to
calibrate the corresponding measurement stations.
If a printer is connected and the PRIN menu is activated,
on completion of a calibration cycle the calibration protocol is printed out automatically. The calibration protocol contains nominal and actual values, current control
units and date.
1. Using the left arrow keys select CALI on the
ready-for-operation device and confirm your selection with Start/Enter.
The zeroing process is being performed. At that the jaw
moves to the counter-jaw, takes the zero point and returns to its initial position.
4. Insert the 10 mm gauge block.
5. Start the measurement with the Start/Enter key. The
movable jaw moves to the gauge block and registers
the second calibration point.
Three different control measurements follow in
succession to test the accuracy of the measurement station.
6. Insert the 5 mm gauge block.
7. Press the Start/Enter key. The measured value is
shown on the display.
8. Insert the 10 mm gauge block.
9. Press the Start/Enter key. The measured value is
shown on the display.
2. Using the right arrow keys select the diameter (DIAM)
or hardness (HARD) to calibrate the corresponding
measurement station.
10.Insert the 15 mm gauge block.
The calibration procedures are described in the following
sections.
9.1 – Diameter calibration
1. Select the DIAM item from the Calibration menu.
2. Clean the movable and fixed jaws with a dusting
brush.
3. Press the Start/Enter key.
21039 - 4.1
11.Press the Start/Enter key. The measured value is
shown on the display.
12.Press the Start/Enter key to return to the Calibration
menu.
TBH 125 – Calibration23
9.2 – Hardness calibration
9.2.1 – Static calibration
The static hardness calibration is done by weighing a calibration weight (30 kg is recommended). Then control
measurements follow.
1. Select the HARD item from the Calibration menu.
WARNING
Falling object! Insecure positioning
can lead to damages. Be careful when
placing the control weights so that they
do not fall!
7. Carefully place the required weight (30 kg is recommended).
2. Press the Start/Enter key.
8. Press Start/Enter to confirm the weight. The new
calculated Newton factor will be shown during ca. 2
seconds.
3. Mount the justification adapter onto the jaw.
The linearity of the load cell is verified with 3 different
control weights now (CON1: 30 kg, CON2: 20 kg, CON3:
10 kg).
9. Place the 30 kg weight.
10.Press the Start/Enter key for the confirmation. The
current value is shown on the display.
11.Place the 20 kg weight.
4. Place the device carefully onto the side so that the
justification adapter would be at the top.
12.Press the Start/Enter key for the confirmation. The
current value is shown on the display.
Ensure that there is no LAN-cable in the
port on the right side of the device!
13.Place the 10 kg weight.
5. Press the Start/Enter key.
14.Press the Start/Enter key for the confirmation. The
current value is shown on the display.
The current weight, which acts upon the load cell, is
shown (not exactly zero because of the justification
adapter’s weight).
15.When the calibration is finished, remove the plate and
place the device upright again.
6. Zero the weight by pressing the left arrow key.
16.Press the Start/Enter key to return to the Calibration
menu.
21039 - 4.1
24
TBH 125 – Control
9.2.2 – Dynamic calibration
The dynamic hardness calibration is done with Erweka
AutoCal 2.0 Windows® XP.
1. Plug the Erweka AutoCal 2.0 Windows® XP USB stick
into the USB port.
2. Select the HARD item from the Calibration menu.
3. Press the Start/Enter key.
4. Place the AutoCal control unit onto the measurement
station.
5. Press the Start/Enter key.
6. Wait a few seconds. The force measured by the load
cell is displayed from the left and the force measured
by the AutoCal – from the right.
The measurement range of the calibration and control is ca. ± 10 N from the given nominal values.
12.Wait until the third control point (nominal value 100 N)
is measured. The force measured by the load cell is
displayed from the left and the force measured by the
AutoCal – from the right.
The deviation between the force measured by the load cell (device) and by the
AutoCal can differ in the range of max. ±
1 N! Otherwise you must repeat the calibration! For example:
106 N is the force measured by the load
cell. 106.8 N is the force measured by the
AutoCal shown 10 times more precisely.
The deviation constitutes only 0.8 N.
10 – Control
In this menu the device calibration is checked. The control is done similar to the calibration.
The CONT menu contains the DIAM and HARD items to
control the calibration of the measurement stations.
1. Using the left arrow keys select CONT on the
ready-for-operation device and confirm your selection with Start/Enter.
7. Press the Start/Enter key.
8. Wait until the first control point (nominal value 300 N)
is measured. The force measured by the load cell is
displayed from the left and the force measured by the
AutoCal – from the right.
2. Using the right arrow keys select between diameter
(DIAM) or hardness (HARD) to control the calibration
of the corresponding measurement station.
9. Press the Start/Enter key.
10.Wait until the second control point (nominal value 200
N) is measured. The force measured by the load cell
is displayed from the left and the force measured by
the AutoCal – from the right.
11.Press the Start/Enter key.
21039 - 4.1
The control procedures are described in the following
sections.
TBH 125 – Control25
10.1 – Diameter
10.2 – Hardness
1. Select the DIAM item from the Control menu.
10.2.1 – Control of the static
hardness calibration
The control of the static hardness calibration is done by
weighing calibration weights.
2. Clean the movable and fixed jaws with a dusting
brush.
1. Select the HARD item from the Control menu.
3. Press the Start/Enter key.
2. Press the Start/Enter key.
3. Mount the justification adapter onto the jaw.
The zeroing process is being performed. At that the jaw
moves to the counter-jaw, takes the zero point and returns to its initial position.
Three different control measurements follow in succession to test the accuracy of the test station.
4. Insert the 5 mm gauge block.
5. Press the Start/Enter key. The measured value is
shown on the display.
4. Place the device carefully onto the side so that the
justification adapter would be at the top.
6. Insert the 10 mm gauge block.
Ensure that there is no LAN-cable in the
port on the right side of the device!
7. Press the Start/Enter key. The measured value is
shown on the display.
The hardness calibration is verified with 3 different control weights (CON1: 30 kg, CON2: 20 kg, CON3: 10 kg) in
succession.
8. Insert the 15 mm gauge block.
9. Press the Start/Enter key. The measured value is
shown on the display.
10.Press the Start/Enter key to return to the Control
menu.
WARNING
Falling object! Insecure positioning
can lead to damages. Be careful when
placing the control weights so that they
do not fall!
21039 - 4.1
26
TBH 125 – Control
5. Place the 30 kg weight.
5. Press the Start/Enter key.
6. Press Start/Enter for the confirmation. The current
value is shown on the display.
6. Wait until the force on the first control point (nominal
value 300 N) is measured. The force measured by
the load cell is displayed from the left and the force
measured by the AutoCal – from the right.
7. Place the 20 kg weight.
8. Press Start/Enter for the confirmation. The current
value is shown on the display.
7. Press the Start/Enter key.
8. Wait until the force on the second control point (nominal value 200 N) is measured. The force measured by
the load cell is displayed from the left and the force
measured by the AutoCal – from the right.
9. Place the 10 kg weight.
10.Press Start/Enter for the confirmation. The current
value is shown on the display.
9. Press the Start/Enter key.
11.When the control measurements are finished, remove
the plate and place the device upright again.
12.Press Start/Enter for the confirmation. The jaw returns to the initial position.
10.2.2 – Control of the dynamic
hardness calibration
The control of the dynamic hardness calibration is done
with Erweka AutoCal 2.0 Windows® XP.
1. Plug the Erweka AutoCal 2.0 Windows® XP USB stick
into the USB port.
2. Select the HARD item from the Control menu.
3. Press the Start/Enter key.
4. Place the AutoCal control unit onto the measurement
station.
The measurement range of the calibration and control is ca. ± 10 N from the given nominal values.
21039 - 4.1
10.Wait until the force on the third control point (nominal
value 100 N) is measured. The force measured by the
load cell is displayed from the left and the force measured by the AutoCal – from the right.
The deviation between the force measured by the load cell (device) and by the
AutoCal can differ in the range of max. ±
1 N! Otherwise you must repeat the calibration! For example:
106 N is the force measured by the load
cell. 106.8 N is the force measured by the
AutoCal shown 10 times more precisely.
The deviation constitutes only 0.8 N.
TBH 125 – Performing the Measurements27
11 – Performing the Measurements
The NUMB menu is shown on the display
of
the
switched
on
device
(see
4.4 – Connecting the device and its first switching on).
CAUTION
Danger of squashing! During the zeroing
procedure and the measurement the jaw
moves. Do not touch the test station!
1. Specify the number of samples.
6. Place a sample right against the fixed test jaw vertically and as centered as possible to measure its
thickness.
7. Press the Start/Enter key. The thickness is being
measured.
The tablet thickness will not be measured if this option in the Settings menu is
disabled (see 5.24 – Thickness).
You can enter up to 99 samples. The number of samles
entered by you is fixed and applies to all measurements
that will be performed after this step.
8. Place a sample right against the fixed test jaw horizontally as centered as possible to measure its hardness and diameter.
2. Confirm the specified number of samples with Start/
Enter.
9. Press the Start/Enter key. The hardness and diameter are being measured.
Step 3 applies to TBH 125 TD devices only.
3. Specify the approximate thickness of samples. You
can enter values from 0.10 to 28.00 mm. Confirm
your entry with Start/Enter.
Step 4 applies to TBH 125 D and TD devices only.
Hardness and diameter will not be measured if these options in the Settings menu
are disabled (see 5.22 – Hardness and
5.23 – Diameter).
The dust produced in the test process
and left on the test station can lead to
false measurements. Therefore, it should
be removed after each sample. Apply the
delivered dusting brush for this purpose.
The number of measurement repetitions (steps 6 - 9) depends on the specified number of samples.
4. Specify the approximate diameter of samples. You
can enter values from 2.00 to 28.00 mm. Confirm
your entry with Start/Enter.
Start/Enter must not be pressed
after each tablet if the function
of automatic measurement in the
Settings menu is enabled (see
5.20 – Automatic measurement).
Steps 3 and 4 are omitted when the
function of automatic determination
in the Settings menu is enabled (see
5.17 – Automatic determination).
5. Press the Start/Enter key to zero the test station.
21039 - 4.1
28
TBH 125 – Results
12 – Results
13 – Statistics
In the REST menu you can view the listed measurement
results of the last test.
In the STAT menu you can view the statistic evaluations
of the current test.
The measurement results will be stored until the device is
switched off or a new test is performed.
The statistic evaluations will be stored until the device is
switched off or a new test is performed.
1. Using the left arrow keys select REST on the
ready-for-operation device and confirm your selection
with Start/Enter.
1. Using the left arrow keys select STAT on the
ready-for-operation device and confirm your selection
with Start/Enter.
2. Using the left arrow keys scroll the listed results.
2. Using the left arrow keys scroll the statistic values.
The table below represents the specific statistic values
for hardness, thickness and diameter of the sample.
Values on the left side indicate the number of tablet and
measurement parameter (H for hardness, T for thickness
and D for diameter). The measurement results are displayed on the right side.
For example, the measurement result for 01T (thickness
of the first sample) is 3.93mm.
Designation
Explanation
HMIN/TMIN/DMIN
Minimum value of measurement
HMAX/TMAX/DMAX Maximum value of measurement
HM M/TM M/DM M Difference between maximum
and minimum value
HAVR/TAVR/DAVR
Average value
HSTA/TSTA/DSTA
Standard deviation
HREL/TREL/DREL
Relative standard deviation
Interpretation of the first letters in designations:
• H = hardness (break resistance)
• T = thickness
• D = diameter
21039 - 4.1
TBH 125 – Maintenance29
14 – Maintenance
14.2 – Inspection and maintenance
14.1 – Cleaning
Ensure that the device is regularly inspected and each
time is clean.
To guarantee the failure-free operation, it is recommended
to clean the device regularly. The device is to be cleaned
after each test. The dust must be removed thoroughly.
Read the following instructions before you begin with the
cleaning.
HAZARD of electric shock when
cleaning the electric devices! Disconnect
the mains supply for cleaning the electric
devices! Switch the device off and unplug
it for cleaning! Clean the electric devices
without liquids.
Instructions for cleaning
1. Disconnect the mains supply and, if available, the
printer.
2. Clean the surfaces of the measurement stations to
remove the tablet debris.
Note that product residues must be
properly disposed of in accordance with
the applicable environmental regulations.
For thorough cleaning ERWEKA recommends to exhaust the surfaces or apply
a soft brush.
Inaccurate measurement results!
Shaking and vibrations can displace the
measuring devices. Clean the device
carefully.
Pay attention that no particles collect in
the guide rails, grooves and chinks.
To ensure a long lifetime of your
units and systems we recommend
regular maintenance performed by our
specialized staff.
In longer standstills
If the device is not used for a long time, follow the instructions below:
• Switch the device off and unplug it.
• Dismount additional components.
• Clean the device thoroughly.
• Store the device, its components and manual under
conditions defined for the installation environment.
Non-compliance with the instructions
given above can lead to damages!
14.3 – Spare parts
Electronic and mechanical replacements
are to be made by the ERWEKA
personnel or approved by ERWEKA!
Only original spare parts or components released by
ERWEKA should be used. Only repairs or changes on the
device performed by the ERWEKA technicians or approved explicitly by ERWEKA are to be made.
3. Wipe the device with a soft and slightly damped cloth.
Do not use an excessively damped
cloth but slightly damped one. Do not
add any chemical cleansing agents to
the cleaning water. For the lacquered
housing parts use no cleansing agents
which attack this material.
If needed, e.g. in case of serious dirtying, use a damp
cloth and blot the cleaned surface dry.
21039 - 4.1
TBH 125 – Appendix31
Appendix
Example printouts of the protocols
In this chapter you can find the examples of protocols printed from the device.
Calibration protocol
Check protocol
21039 - 4.1
TBH 125 – Appendix33
Measurement protocol
In this example the measuring principle of constant speed (here: 2.3 mm/s) was used.
21039 - 4.1
Certificate of Compliance for
Konformitätserklärung für
Hardness Tester,
Type TBH 125
We, ERWEKA GmbH, declare under our sole responsibility that the product to which this declaration relates is in conformity with the following EU-Directives and harmonized standards:
■ Low Voltage Directive (LVD) 2014 / 35 / EU
■ Safety requirements for electrical equipment for measurement, control and laboratory use; EN 61010-1
■ Electromagnetic Compatibility, (EMC) Directive 2014 / 30 / EU
■ Electrical equipment for measurement, control and laboratory use; EN 61326-1
Wir, die ERWEKA GmbH, erklären in alleiniger Verantwortung, dass das Produkt, auf das sich diese Erklärung bezieht, mit folgenden EU-Richtlinien und harmonisierten Normen übereinstimmt:
■ Niederspannungsrichtlinie 2014 / 35 / EU
■ Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und Laborgeräte; EN 61010-1
■ Elektromagnetische Verträglichkeit, EMV-Richtlinie 2014 / 30 / EU
■ Mess-, Steuer-, Regel- und Laborgeräte, EN 61326-1
Heusenstamm, 22.02.2016
Manfred Koller
-CTO-
ERWEKA GmbH · Ottostr. 20-22 · 63150 Heusenstamm · Germany · Tel: +49 6104 6903-0
Fax: +49 6104 6903-40 · E-mail: info@erweka.com · www.erweka.com
Managing Director & CEO: Werner G. Müller, Claudia Müller, Manfred Koller · District court Offenbach HRB 2382
ERWEKA GmbH · Ottostr. 20-22 · 63150 Heusenstamm · Germany · Tel: +49 (0) 6104 6903-0
Directors: Claudia Müller, Werner G. Müller · District court Offenbach HRB 2382
Fax: +49 (0) 6104 6903-40 · E-mail: info@erweka.com · www.erweka.com
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