Page 1
Moisture Analyzer
Operating Instructions
HE53
Page 2
Page 3
Table of Contents
Introduction1 5
Conventions and Symbols Used in these Operating Instructions1.1 5
Safety Information2 6
Definition of Signal Warnings and Symbols2.1 6
Product Specific Safety Notes2.2 6
Design and Function3 10
Overview3.1 10
Operation Keys3.2 11
Display3.3 12
Installation and Putting into Operation4 15
Scope of Delivery4.1 15
Location4.2 15
Installing the Components4.3 16
Connecting to the Mains4.4 16
Switching the Instrument On and Off4.5 17
Leveling4.6 17
Adjustments4.7 18
Weight Adjustment4.7.1 18
Temperature Adjustment4.7.2 19
Your First Measurement5 22
User Menu6 25
Method Definition7 27
Setting the Drying Program7.1 27
Setting the Temperature7.2 27
Setting the Switch-off Criterion7.3 27
Setting the Display Mode7.4 28
Performing a Measurement8 30
Maintenance9 33
Cleaning9.1 33
Replacing power line fuse9.2 35
Disposal9.3 35
Troubleshooting10 36
Error Messages10.1 36
What to Do if…10.2 38
Technical Data11 40
General Technical Data11.1 40
Dimensions11.2 42
Table of Contents 3
Page 4
Interface Specification11.3 43
MT-SICS Interface Commands and Functions11.4 43
Accessories and Spare Parts12 44
Appendix13 47
How to Obtain Best Results13.1 47
Measurement Principle of Halogen Moisture Analyzer13.1.1 47
Notes on Adjustment of Balance and Heating Module13.1.2 47
Optimum Sample Preparation13.1.3 48
Further Information on Moisture Determination13.1.4 48
Index 49
Table of Contents4
Page 5
1Introduction
1
2
…
Thank you for purchasing a Halogen Moisture Analyzer from METTLER TOLEDO.
Your Moisture Analyzer is fast and reliable. It offers a high level of operating convenience and useful
functions to facilitate determination of the moisture content of your samples.
Behind your instrument stands METTLER TOLEDO, a leading manufacturer of not only balances and
scales for the lab and production, but also analytical measuring instruments. A customer service net
work covering the entire globe with well trained personnel is your service at all times, whether you are
choosing accessories or require guidance for a specific application to ensure optimum utilization of
your instrument.
Your Halogen Moisture Analyzer is used for determining the moisture content of almost any substance.
The instrument works on the thermogravimetric principle. At the start of the measurement the Moisture
Analyzer determines the weight of the sample, the sample is then quickly heated by the integral halo
gen heating module and the moisture vaporizes. During the drying process the instrument continually
measures the weight of the sample and displays the reduction in moisture. Once drying has been
completed, the moisture or solids content of your sample is displayed as the final result.
Of decisive importance in practice is the rate of heating and even heating of the surface of the sample.
In comparison with conventional infrared heating or the drying oven method, for example, the halogen
heating module of your instrument needs a shorter time to reach its maximum heating power. It also
allows use of high temperatures, an additional factor in shortening the drying time. Uniform heating of
the sample material ensures good repeatability of the drying results and makes it possible to use a
smaller amount of sample.
The instrument has a CE declaration of conformity and METTLER TOLEDO as the manufacturer has
been awarded ISO 9001 and ISO 14001 certification. This provides you with the assurance that your
capital investment is protected in the long term by a high product quality and a comprehensive service
package (repairs, maintenance, servicing, adjustment service).
Finding More Information
u www.mt.com/moisture
Software version
These operating instructions are based on the initially installed firmware (software) version V1.10
1.1Conventions and Symbols Used in these Operating Instructions
Key designations are indicated by a picture or text in square brackets (e.g. [ ]
These symbols indicate an instruction:
prerequisites
steps
results
5Introduction
Page 6
2Safety Information
2.1Definition of Signal Warnings and Symbols
Safety notes are marked with signal words and warning symbols. These show safety issues and warn
ings. Ignoring the safety notes may lead to personal injury, damage to the instrument, malfunctions
and false results.
Signal Words
WARNING for a hazardous situation with medium risk, possibly resulting in
CAUTION for a hazardous situation with low risk, resulting in damage to the
Attention (no symbol)
Note (no symbol)
Warning Symbols
severe injuries or death if not avoided.
device or the property or in loss of data, or minor or medium injuries if
not avoided.
for important information about the product.
for useful information about the product.
General hazard Electrical shock
Hot surface Inflammable or explosive
Toxic substance Acid / Corrosion
substance
2.2Product Specific Safety Notes
General Safety Information
Your instrument meets the state of the art technology and complies with all recognized safety rules,
however, certain hazards may arise in extraneous circumstances. Do not open the housing of the
instrument: It does not contain any parts which can be maintained, repaired or replaced by the user. If
you ever have problems with your instrument, contact your authorized METTLER TOLEDO dealer or ser
vice representative.
Always operate and use your instrument only in accordance with the instructions contained in this
manual. The instructions for setting up your new instrument must be strictly observed.
If the instrument is not used according to these Operating Instructions, protection of the instru
ment may be impaired and METTLER TOLEDO assumes no liability.
Intended Use
Your Moisture Analyzer is used for determining the moisture in samples. Use the instrument exclusively
for this purposes. Any other type of use and operation beyond the limits of technical specifications
without written consent from Mettler-Toledo AG, is considered as not intended.
Moisture determination applications must be optimized and validated by the user according to local
regulations. Application-specific data provided by METTLER TOLEDO is intended for guidance only.
6 Safety Information
Page 7
It is not permitted to use the instrument in explosive atmosphere of gases, steam, fog,
dust and flammable dust (hazardous environments).
Staff Safety
The Moisture Analyzer may be operated only by trained personnel who are familiar with the properties
of the samples used and with the handling of the instrument.
In order to use the instrument, you must have read and understood the operating instructions. Keep
the operating instructions for further reference.
Never make any modifications to the instrument and use only original spare parts and optional equip
ment from METTLER TOLEDO.
Protective Clothing
It is advisable to wear protective clothing in the laboratory when working with the instrument.
A lab coat should be worn.
A suitable eye protection such as goggles should be worn.
Use appropriate gloves when handling chemicals or hazardous substances, checking
their integrity before use.
Safety Notes
WARNING
Risk of electric shock
Your instrument is supplied with a 3-pin power cable with an equipment
grounding conductor. Only extension cables which meet this relevant stan
dards and also have an equipment grounding conductor may be used. Inten
tional disconnection of the equipment grounding conductor is prohibited.
7Safety Information
Page 8
CAUTION
The Halogen Moisture Analyzer works with heat!
a) Ensure sufficient free space around the instrument to avoid heat accumu
lation and overheating (approx. 1 m free space above the heating mod
ule).
b) The vent over the sample must never be covered, plugged, taped over or
tampered with in any other way.
c) Do not place any combustible materials on, under or next to the instru
ment since the area around the heating module may be hot.
d) Exercise caution when removing the sample. The sample itself, the sample
chamber, the draft shield and any sample vessels used may still be very
hot.
e) During operation, you should never open the heating module itself as the
ring-shaped heating reflector or its protective glass can reach 400 °C! If
you have to open the heating module e.g. for maintenance, disconnect the
instrument from the power supply and wait until the heating module has
cooled down completely.
f) No modifications must be made within the heating module. It is particular
ly dangerous to bend any components or remove them or to make any
other changes.
Certain samples require special care!
With certain types of samples, there is a possibility of danger to personnel or damage of property.
Please note that the user always has the responsibility and liability for damage caused by use of any
types of samples!
CAUTION
Fire or Explosion
• Flammable or explosive substances.
• Substances containing solvents.
• Substances which evolve flammable or explosive gases or vapors when
heated.
a) In cases of doubt, perform a careful risk analysis.
b) Work at a drying temperature that is low enough to prevent the formation
of flames or an explosion.
c) Wear protective goggles.
d) Work with small amounts of sample.
e) Never leave the instrument unattended!
8 Safety Information
WARNING
Substances which contain toxic or caustic components
Toxic gases produced during drying could cause irritations (eyes, Skin, breath
ing), illness or death.
– Such substances may be dried only in a fume cupboard.
Page 9
CAUTION
Corrosion
Substances which evolve corrosive vapors when heated (e.g. acids).
– Work with small amounts of samples as the vapor can condense on cool
er housing parts and cause corrosion.
9Safety Information
Page 10
3Design and Function
1
3
4
5
6
7
8
9
10
11
12 13
14
15
17
19
20
18
16
2
3.1Overview
1 Heating module
2 Handles for open
ing heating module
3 Protective glass
4 Reflector
5 Temperature sensor
6 Temperature over
load protection
7 Halogen lamp
8 Sample chamber
9 Sample pan holder
10 Draft shield
11 Sample pan han
dler
12 Level indicator
13 Display
14 Operation keys
15 Leveling foot
16 Slot for antitheft
purposes
17 Power supply
socket
18 Fan
19 Power line fuse
20 RS232C serial
interface
10 Design and Function
Page 11
3.2Operation Keys
2
3
4 5
1
7
6
8
9
No. Key Behavior in
1 Unit Set the default display
2 Menu Enter user menu. — Scroll in level 1.
3 – On
– Off
4 – Tare /
5 – Start
6 – Stop
7 – Print
9 Switch-off
9 Tempera
Zero
– Up
– Down
– Enter
– Cancel /
Exit
criterion
ture
general
mode.
– Switch on.
– Switch off into
standby mode.
Execute tare or zero. — Scroll to previous
Start drying process. — Scroll to next item.
— Stop drying process. – Confirm current
– Print the parameters
and settings.
Set switch-off criterion. Display switch-off cri
Set drying tempera
ture.
Behavior during
drying proces
Toggle the display
mode.
Switch off into standby mode.
Print the intermediate
value.
teria (Auto or preset
time) for 2 seconds.
Display preset temper
ature for 2 seconds.
Behavior in
menu mode
—
item.
item.
– Down one level.
Up one level.
—
—
11Design and Function
Page 12
3.3Display
1 2 3
45678
1 Progress indicator area 2 Main area
3 Unit area 4 Temperature area
5 Service/Adjustment area 6 User guidance area
7 Heating mode area 8 Time area
Icons
Indicates unstable values Drying temperature
Indicates calculated values Temperature unit
Indicates negative values Service Mode
Switch-off criteria: Auto or Time Weight Adjustment (callibration)
Drying mode «Standard» User guidance
Drying mode «Rapid» Progress indicator
12 Design and Function
End of moisture determination
Page 13
Progress indicator
The progress indicator informs you about the state of the drying process.
Status Diagram Automatic Switch-off Timed Switch-off
1 The drying process starts. The drying process starts.
2 After 30 seconds. After 1/5 of time.
3 After 1 minute. After 2/5 of time.
4 When mean weight loss is 1 mg
per 15 seconds.
5 When mean weight loss is 1 mg
per 30 seconds.
6 When auto-switch-off is reached.
The result and END is displayed.
After 3/5 of time.
After 4/5 of time.
The total time is reached.
The result and END is displayed.
13Design and Function
Page 14
User guidance
This graphical help guides you through the preparation process. It prompts you by flashing to execute
the next operating step.
User guidance Status Explanation
Basic weighing Load the empty sample pan and execute a tare.
Note
Tare is only possible with closed heating module.
Ready for weighing Place the sample on the sample pan.
Close heating module Close heating module.
Ready for start Start the drying process.
Measurement started,
while heating module is
still open.
empty Drying and measuring Drying process is running.
empty Drying complete Drying process is completed.
empty Taring Taring process is running.
Close heating module.
14 Design and Function
Page 15
4Installation and Putting into Operation
4.1Scope of Delivery
Open the package and remove carefully the instrument and the accessories. Check the completeness
of the delivery. The following accessories are part of the standard equipment of your Moisture Analyz
er.
●
80 aluminum sample pans
●
1 Sample handler
●
1 Sample pan holder (pan support)
●
1 Draft shield
●
1 Specimen sample (circular, absorbent glass fibre filter)
●
1 Power cord (country specific)
●
1 Spare fuse (country specific)
●
1 In use cover
●
1 Operating Instructions
●
1 Application brochure «Guide to Moisture Analysis»
●
1 CD ROM (Installation videos, Operating Instructions, Moisture Guide, SOPs Routine Testing and
further information)
●
1 Declaration of conformity
Remove the packaging from the instrument. Check the instrument for transport damage. Immediately
inform your METTLER TOLEDO representative if you have any complaints or parts are missing.
Note
Store all parts of the packaging. This packaging guarantees the best possible protection for the trans
port of your instrument.
4.2Location
Your Moisture Analyzer is a precision instrument. An optimum location guarantees accuracy and
dependability. Make sure that the following environmental conditions are met:
●
Operate the instrument only indoors and at an altitude of less than 4000 m above sea level.
●
Before switching on the instrument, allow all its parts to reach room temperature (+5 to 30°C).
Make sure that the relative humidity is between 20% and 80% and non-condensing conditions
are met.
●
The power plug must be easily accessible.
●
Firm, horizontal location as free from vibrations as possible.
●
Avoid direct sunlight.
●
No excessive temperature fluctuations.
●
No powerful drafts.
●
Surroundings as free from dust as possible.
●
Sufficient clearance around the instrument to allow warm air
to dissipate.
●
Sufficient distance from heat-sensitive materials in the vicinity
of the instrument.
15Installation and Putting into Operation
Page 16
WARNING
1
2
3
Substances which contain toxic or caustic components
Toxic gases produced during drying could cause irritations (eyes, Skin, breath
ing), illness or death.
– Such substances may be dried only in a fume cupboard.
4.3Installing the Components
1 Open the heating module.
2 Place the draft shield (1). Only one position is possible.
3 Place the sample pan holder (2). Turn the sample pan hold
er until it engages in the correct position.
4 Place the sample pan handler (3).
4.4Connecting to the Mains
WARNING
Risk of electric shock
a) Use only the 3-pin power cord with equipment grounding conductor which
was supplied with your instrument and only an 3-pin grounded outlet
must be used.
b) Only extension cables which meet this relevant standards and also vave
an equipment grounding conductor may be used.
Attention
●
First check whether the voltage printed on the type plate matches your local line voltage. If this is
not the case, on no account connect the instrument to the mains. In this case contact your
METTLER TOLEDO sales representative or dealer.
Two different versions of drying units with country-specific power cable are available (115 V AC
or 230 V AC).
●
The power plug must be always accessible.
●
Before operating, check all cables for damage.
●
Guide the cables so that they cannot become damaged or interfere with the measuring process.
16 Installation and Putting into Operation
Page 17
– Connect the power cord to the power supply socket on the
L
R
instrument and to the power line outlet.
4.5Switching the Instrument On and Off
Switching on
1 Connect the instrument to the mains.
2 Press [ ] to switch the instrument on.
3 Allow your instrument to warm up for 60 minutes before performing measurements. The instru
ment adapts itself to the ambient conditions during this time. When the instrument is in standby
mode, no warming-up time is needed after switching on.
Switching off
– Press [ ] to switch the instrument off into standby.
4.6Leveling
Exact horizontal positioning and stable installation are prerequisites for repeatable and accurate
results. To compensate for small irregularities or inclinations (±2%) at the location, the instrument
must be leveled.
For exact horizontal positioning, the instrument has a level indi
cator (level) and 2 leveling screws. When the air bubble in the
level indicator is exactly in the center, the instrument is standing
perfectly horizontally. To level it, proceed as follows:
1 Position your instrument at the selected location.
2 Turn the two leveling feet until the air bubble is in the center
of the level indicator.
L = left foot
R = right foot
Air bubble at "12 o'clock" turn both feet clockwise
Air bubble at "3 o'clock" turn left foot clockwise,
Air bubble at "6 o'clock" turn both feet counter
Air bubble at "9 o'clock" turn left foot counter
Note
The drying unit should be re-leveled each time its location is
changed.
right foot counterclock
wise
clockwise
clockwise, right foot
clockwise
17Installation and Putting into Operation
Page 18
4.7Adjustments
If you have connected a printer to your instrument and this is activated, on completion of the adjust
ment an adjustment record will be automatically printed out.
4.7.1Weight Adjustment
Navigation: [Menu] > MENU > CAL > WEIGH
In this menu item, you can adjust the balance of your instrument.
Attention
●
To obtain accurate results, the balance must be adjusted at the point of use under measuring con
dition in order to match the gravitational acceleration at its location. The instrument must be con
nected to the power supply for approximately 60 minutes in order to reach operating temperature
before adjusting. Adjusting is necessary:
•
before the instrument is used for the first time.
•
after a change of location.
●
We advice you to wait at least 30 minutes after a drying operation (or previous heating module
adjustment) before performing the adjustment.
Note
You can press [ ] to stop weight adjustment at any time.
Adjustment procedure
1 Have the required test weight (50 grams) ready.
2 Open the heating module.
3 Remove any load on the sample pan holder including the sample pan.
4 Chose the menu option CAL > WEIGH and press [ ].
The instrument tares, the weight icon is displayed and 50.000 g is flashing.
5 Place the requested test weight in the center of the sample pan holder.
The display flashes - - - - - - - .
6 Remove the test weight when 0.000 g is flashing.
The instrument displays successful adjustment with DONE and changes to weighing mode.
18 Installation and Putting into Operation
Page 19
Sample printout
-- BALANCE ADJUSTMENT -METTLER TOLEDO
Type HE53
SNR 1234567890
SW 1.10
Weight ID: .............
Weight 50.000 g
External Adj. done
Date: ..................
Time: ..................
Signature: .............
---------- END ---------
4.7.2Temperature Adjustment
Navigation: [Menu] > MENU > CAL > TEMP
This function allows you to adjust the temperature control of the heating module. The adjustment is
defined by two points, namely 100 °C and 160°C and takes 30 minutes. You need the optional tem
perature adjustment set for performing this function, see Accessories and Spare Parts (page44). To
learn when an adjustment of the heating module is necessary, see Notes on Adjustment of Balance
and Heating Module (page47) and Cleaning (page33). We advise you to wait at least 30 minutes
after a drying operation (or previous heating module adjustment) before performing an adjustment.
CAUTION
Danger of burns
After adjustment, the temperature adjustment set and the sample pan handler
can still be hot.
– Allow them to cool down before you remove them.
Note
You can stop temperature adjustment at any time by opening the heating module.
19Installation and Putting into Operation
Page 20
Adjustment procedure
1
Chose the menu option CAL > TEMP and press [ ].
2 Open the heating module.
3 Remove the sample pan handler.
4 Remove the sample pan holder.
5 Place the sample pan handler with the inserted temperature
adjustment disc with precision thermometer in the sample
chamber.
6 Close the heating module to start the adjustment process
The heating module is heated to a temperature of 100
°C. You can follow this process on the display. The
instrument now waits 15 minutes until the temperature
adjustment set shows the correct temperature, a repeat
ed beep is given.
7 Read the temperature adjustment set through the inspection window of the heating module.
8
Enter this temperature using [ ] or [ ].
9
After entering the value, press [ ].
Note
The temperature must be entered within 10 minutes after the start of the beep, otherwise the
adjustment process will be terminated.
The heating module now heats to the second temperature (160 °C).
10 Proceed exactly as you did for the first temperature.
11
Confirm your entry with [ ].
The adjustment is at the end when the instrument displays DONE and automatically quits the
menu. The adustment is complete.
20 Installation and Putting into Operation
Page 21
12 Open the heating module and allow them to cool down.
-TEMPERATURE ADJUSTMENTMETTLER TOLEDO
Type HE53
SNR 1234567890
SW 1.10
Temp. Reference ID:.....
Temp. 100 °C 101 °C
Temp. 160 °C 159 °C
Temperature Adj. done
Date: ..................
Time: ..................
Signature: .............
---------- END ---------
13 Remove the sample pan handler with the temperature adjust
ment disc with precision thermometer.
14 Insert sample pan holder.
The Instrument is ready for measuring.
Sample printout
21Installation and Putting into Operation
Page 22
5Your First Measurement
After you have successfully put your new Moisture Analyzer into operation for the first time, you can
immediately perform your first measurement. In doing so, you will become familiar with the instru
ment.
Use the supplied specimen sample (absorbent glass fiber filter) for your first measurement to deter
mine the moisture content. During your first measurement the instrument operates with the factory set
tings.
The instrument is connected to the mains.
1
To switch on, press [ ].
The instrument performs a self-test. Wait until the dis
play shows 0.000 g.
Your Moisture Analyzer has a graphical user guidance which
prompts you by flashing to execute the next operating step.
The instrument is connected to the mains and switched on.
The instrument is warmed-up.
2 Open the heating module.
The user guidance prompts you to load the empty sam
ple pan.
3 Position the empty sample pan in the sample pan handler.
4 Place the sample pan handler in the draft shield. Ensure that
the tongue of the sample pan handler lies exactly in the slot
of the draft shield. The pan must lie flat in the pan holder.
Note
We advise you to work with the sample pan handler at all
times. The pan handler is ergonomic, safe and provides pro
tection against burns due to the hot sample pan.
5 Close the heating module.
6
Press [ ].
The balance is set to zero.
The user guidance prompts you to add the sample to the
sample pan.
22 Your First Measurement
Page 23
7 Open the heating module.
8 Place the provided specimen sample (absorbent glass fibre
filter) in the sample pan.
9 Wet the specimen sample with a few drops of water, so that
the displayed weight is at least 0.5 grams (required mini
mum weight of sample)
Note
The drying process cannot start until the minimum sample
weight has been reached.
The user guidance indicates that you can close the heat
ing module.
10 Close the heating module.
11 Press [Start] to start the drying and measuring process.
You can follow the measurement progress on the dis
play:
– state of the drying progress (progress indicator).
– current temperature in the sample chamber.
– elapsed time since the start of the measurement
process.
– current result in the chosen display mode.
Note
If the heating module is opened during measurement
process, the heating will stop and the program will
abort.
23Your First Measurement
Page 24
The measurement process is completed.
12 Read the final result on the display. If a printer is connected,
press [ ] to print the result (if auto printing is not activat
ed).
Remove sample
CAUTION
Danger of burns
Sample, sample pan and sample pan holder may still be hot.
– Open the heating module.
1 Carefully remove the sample handler from the sample cham
ber.
2 To remove the sample pan from the handler, lift the pan
slightly from below and pull it sideways out of the handler. If
you no longer need the sample and the pan, you can simply
tilt the handler until the pan slides out.
Congratulations!
You have just performed your first measurement with your new Moisture Analyzer. In the following
sections you will find more information about the functions of this instrument.
24 Your First Measurement
Page 25
6User Menu
– Press [ ] to enter user menu.
Level 1 Level 2 Level 3 Explanation
PROG
STD Drying mode: Standard (Factory setting)
RAPID Drying mode: Rapid
CAL
WEIGH Activate weight adjustment immediately.
TEMP Activate temperature adjustment immediately.
PRINT
ON Auto print is activated. (Factory setting)
OFF Auto print is inactivated.
P.INT
OFF Disables interval printing. (Factory setting)
00:30
01:00
02:00
05:00
RS232
BAUD
1200
2400
4800
9600 (Factory setting)
19200
38400
BIT.P
8-N 8 data bits/no parity (Factory setting)
7-N 7 data bits/no parity
7-E 7data bits/even parity
7-O 7 data bits/odd parity
7-M 7 data bits/mark parity
7-S 7 data bits/space parity
STOP.B
1BIT 1 Stop bit (Factory setting)
2BITS 2 Stop bits
HAND.S
NONE No handshake
SW Xon/Xoff (Factory setting)
Defines the drying program.
Adustments (calibration)
Defines auto printing
The Interval printing simulates a [ ] key press briefly
according to the settings. The interval printing starts
when the drying process starts and stops when the
switch-off criterion is reached.
Interval time in minutes
Defines the RS232 interface for connecting to a
peripheral device e.g. printer or PC. Character set is
IBM/DOS. Auto baud rate is supported.
Defines the speed of the data transmission (data
transfer rate / baud rate)
Defines Bit/Parity
Defines the stop bits
Defines the type of flow control (handshake)
25User Menu
Page 26
Level 1 Level 2 Level 3 Explanation
RS232
HAND.S HW RTS/CTS
E.O.L.
CR.LF <CR><LF> Carriage Return followed by Line feed
CR <CR> Carriage Return (ASCII-Code 013)
LF <LF> Line feed (ASCII-Code 010)
End of Line character
(ASCII-Codes 013+010) (Factory setting)
26 User Menu
Page 27
7Method Definition
A method contains all settings for measuring the moisture content of a particular sample (substance).
The optimal setting of parameters and the drying time depends on the type and size of the sample and
the desired accuracy of the measurement result. The exact parameters can only be determined experi
mentally, see How to Obtain Best Results (page47)
You will find more information about defining methods in the delivered application brochure «Guide to
Moisture Analysis».
For a method definition, the following parameters can be set:
●
Drying program, see Setting the Drying Program (page27)
●
Drying temperature, see Setting the Temperature (page27)
●
Switch-off criterion, see Setting the Switch-off Criterion (page27)
●
Display mode, see Setting the Display Mode (page28)
7.1Setting the Drying Program
Navigation: [Menu] > MENU > PROG
There are two selections:
Standard drying
Navigation: [Menu] > MENU > PROG > STD
This drying program is suitable for most samples. The sample is heated to the dry
ing temperature. (Factory setting)
Rapid drying
Navigation: [Menu] > MENU > PROG > RAPID
This drying program is primarily suitable for samples with a moisture content over
30%. Following the start, the selected temperature is exceeded by 40% for 3
minutes (however, is possible up to maximum 160°C) to compensate for the cool
ing due to vaporization and accelerate the drying process. The drying temperature is
then lowered to the set value and maintained.
7.2Setting the Temperature
This setting defines the drying temperature.
Press [ ] in basic weighing.
●
Factory setting: 105 °C
●
Setting range: 50 °C up to 160 °C
7.3Setting the Switch-off Criterion
The switch-off criterion defines when the instrument should end the drying process.
Press [ ] in basic weighing.
There are two selections :
AUTO This setting is suitable for most kind of samples. Switch-off is based on a weight
TIMED Switch-off is based on a preset time.
loss per unit of time. (Factory setting)
1 up to 120 minutes are possible in steps of 10 seconds. (The time increases or
decreases by pressing and holding [ ] or [ ].
27Method Definition
Page 28
7.4Setting the Display Mode
WW
DW
MC
MC
WW
DW
WW
=
–
· 100 %
DC
DW
WW
=
· 100 %
The display mode defines the type of value for displaying and printing.
Press [ ] in basic weighing.
The following types are available:
%MC Moisture Content (calculated value)
%DC Dry Content (calculated value)
%AM ATRO Moisture Content (calculated value)
%AD ATRO Dry Content (wet weight, calculated value)
g Weight in grams
Note
Calculated values are indicated with an asterisk in the display.
Detailed information
g – Weight in Grams
The weight of the sample is displayed (and printed out) in grams.
With this setting, the Moisture Analyzer is used as a precision
balance.
During the measurement current weight is constantly displayed in
grams.
%MC – Moisture Content
The moisture content of the sample is displayed (and printed out)
as a percentage of the wet weight (WW = initial weight = 100 %).
This is the factory setting.
During the measurement the value is constantly displayed in per
cent. The measured value is marked by "%MC" (Moisture Content,
e.g. 11.35 %MC) also for the printed results.
Before drying After drying
28 Method Definition
MC = Moisture Content [0…100 %]
WW = wet weight
DW = dry weight
%DC – Dry Content
The dry content of the sample is displayed (and printed out) as a
percentage of the wet weight (WW = initial weight = 100 %).
During the measurement the value is constantly displayed in per
cent. The measured value is marked by "%DC" (Dry Content, e.g.
88.65 %DC) also for the printed results.
DC = dry content [100…0 %]
WW = wet weight
DW = dry weight
Before drying After drying
Page 29
%AM – ATRO Moisture Content
AM
WW
DW
DW
=
–
· 100 %
AD
WW
DW
=
· 100 %
The moisture content of the sample is displayed (and printed out)
as a percentage of the dry weight (DW = final weight = 100 %)
During the measurement the value is constantly displayed in per
cent. The measured value is marked by "%AM" (ATRO Moisture
Content, e.g. 255.33 %AM) also for the printed results.
AM = ATRO moisture content [0…1000 %]
WW = wet weight
DW = dry weight
%AD – ATRO Dry Content (Wet weight)
The wet weight of the sample is displayed (and printed out) as a
percentage of the dry weight (DW = final weight = 100 %)
During the measurement the value is constantly displayed in per
cente. The measured value is marked by "%AD" (ATRO Dry Con
tent, e.g. 312.56 %AD) also for the printed results..
AD = ATRO dry content [100…1000 %]
WW = wet weight
DW = dry weight
1)
Comment on the ATRO display mode
If the current measured value in the ATRO display mode is greater or less than the predefined limit val
ue (i.e. greater than 999.99 %AD or less than –999.99 %AM), the ATRO result values are limited to
999.99%.
1)
Before drying After drying
1)
Before drying After drying
29Method Definition
Page 30
8Performing a Measurement
You are now familiar with the method parameters of your instrument and have defined your own
method for your samples. The instrument is now ready for the determination of the moisture content of
your own samples. In this section you will learn how to perform measurements, print the measure
ment result and stop the measurement process.
The instrument is connected to the mains and switched on.
The instrument is warmed-up.
1 Open the heating module.
The user guidance prompts you to load the empty sam
ple pan.
2 Position the empty sample pan in the sample pan handler.
3 Place the sample pan handler in the draft shield. Ensure that
the tongue of the sample pan handler iies exactly in the slot
of the draft shield. The pan must lie flat in the pan holder.
Note
We advise you to work with the sample pan handler at all
times. The pan handler is ergonomic, safe and provides pro
tection against burns due to the hot sample pan.
4 Close the heating module.
5
Press [ ]
The balance is set to zero.
The user guidance prompts you to add the sample to the
sample pan.
6 Open the heating module.
30 Performing a Measurement
Page 31
7 Add the sample to the sample pan. Ensure that the sample is
distributed evenly to optain good analysis results.
Note
The minimum sample weight required is 0.5 g. To obtain the
best possible reproducibility of results, the sample quantity
weighed in should be similar as possible (e.g. within a tar
get weight tolerance of approximately 10%)
The user guidance indicates that you can now start the
drying process.
8 Close the heating module.
9 Press [Start] to start the drying and measuring process.
You can follow the measurement progress on the dis
play:
– state of the drying progress (progress indicator).
– current temperature in the sample chamber.
– elapsed time since the start of the measurement
process.
– current result in the chosen display mode.
Note
If the heating module is opened during measurement
process, the heating will stop and the program will
abort.
The measurement process is completed.
10 Read the final result on the display. If a printer is connected,
press [ ] to print the result (if autoprinting is not activated).
Remove sample
CAUTION
Danger of burns
Sample, sample pan and sample pan holder may still be hot.
31Performing a Measurement
Page 32
1 Open the heating module.
-MOISTURE DETERMINATIONMETTLER TOLEDO
Type HE53
SNR 1234567890
SW 1.10
Drying Prog Standard
Drying Temp. 100 °C
Switch-off Timed
Time 10:30 min
Display mode %MC
Start weight 2.345 g
Total Time 10:30 min
Dry Weigh 1.934 g
End Result 17.53 %MC
Date: ..................
Time: ..................
Comment: ...............
Signature: .............
---------- END ---------
2 Carefully remove the sample handler from the sample cham
ber.
3 If you do not wish to perform another measurement, press
[ ] to switch the instrument off and close the heating mod
ule.
Stop measurement
When [Stop] is pressed, the measurement is aborted, display shows ABORT.
Sample printout
32 Performing a Measurement
Page 33
9Maintenance
WARNING
Risk of electric shock
– The instrument must be disconnected from the power supply, before cleaning
or other maintenance work to be performed.
– Use only the power cord from METTLER TOLEDO, if it needs replacing.
Note
●
The thermal overload protection can not be reset by the user.
●
The halogen lamp can not be replaced by the user.
In such cases, contact your METTLER TOLEDO representative.
For weight and temperature adjustments see Adjustments (page18).
9.1Cleaning
CAUTION
Danger of burns
The interior parts of the heating module as well as the parts in the sample
chamber could be very hot.
– Wait until the heating module has cooled down completely.
To obtain precise measurement results, we recommend you to clean the temperature sensor and the
protective glass of the halogen lamp regularly. The air inlet of the fan is located at the rear of the
instrument and its exterior should be cleaned from time to time to free it from any dust deposits. The
draft shield and sample pan holder can be removed for cleaning. See Chapter Overview for the loca
tion of the parts. Please note the following directions for cleaning your instrument.
General
Your Moisture Analyzer is made from high quality, resistant materials and can therefore be cleaned
with a commercially available, mild cleaning agent e.g. isopropanol.
Attention
●
Use a lint-free cloth for cleaning.
●
Do not use wet, but only damp cloth for cleaning.
●
Ensure that no liquids enters the interior of the instrument.
●
Clean the exterior of the heating module with a mild cleaning agent although the housing is
extremely rugged and resistant to solvents.
●
On no account use cleaning agents, which contain solvents or abrasive ingredients, as this can
result in damage to the operation panel overlay.
●
Never open the housing of the instrument – it contains no components, which can be cleaned,
repaired or replaced by the user.
33Maintenance
Page 34
Cleaning temperature sensor and protective glass
1
2
3
1
2
3
4
1 Open the heating module (1).
2 Check the protective glass (2) and
the temperature sensor (3) if they
need to be cleaned.
3 If the protective glass (2) appears
dirty, clean the surface using a
commercial glass cleaner.
4 If the temperature sensor (3) is
dirty, clean using a mild cleaning
agent.
Removing glass for cleaning inside
If cleaning behind the glass or the backside of the glass is needed, the reflector ring (glass holder)
with the protective glass must be removed.
1 Remove carfully the four screws
(1) as shown.
2 Remove the reflector ring (2)
(glass holder) with the protective
glass (3).
3 Put the glass (3) on a flat surface
and clean with a commercial glass
cleaner on both sides.
4 Clean the temperature sensor (4)
with a mild cleaning agent.
5 Reassemble after cleaning.
Note
Make sure that the glass opening is
face down.
Attention
Do not touch the lamp with your fin
gers. If it happened, clean the lamp
carefully with e.g. isopropanol.
Note
After the temperature sensor or the protective glass have been cleaned, we recommend to adjust the
heating module using the temperature adjustment kit, see Temperature Adjustment (page19).
34 Maintenance
Page 35
9.2Replacing power line fuse
CAUTION
Safety risk or damage of the instrument
Do not use a fuse of a different type or rated value, or short out (bridge) the
fuse, because this can put your safety at risk and damage the instrument!
If the display of your terminal remains dark after switching on, in all probability the power line fuse is
blown.
The power line fuse is located on the back of the drying unit. To change this fuse, proceed as follows:
1 Pull out the power cord.
2 Unlock the fuse holder by turning counterclockwise using a
suitable tool e.g. screwdriver.
3 Pull it out.
4 Remove the fuse and check its condition.
5 If the fuse is blown, replace the fuse with one of the same
type and the same rated value:
for 115 V: 5x20mm, F6AL250V (6 A , fast-acting, lowbreaking capacity)
for 230 V: 5x20mm, F2.5AL250V (2.5 A, fast-acting, lowbreaking capacity)
6 Insert the fuse holder and lock it by turning clockwise.
9.3Disposal
In conformance with the European Directive 2002/96/EC on Waste Electrical and
Electronic Equipment (WEEE) this device may not be disposed of in domestic waste.
This also applies to countries outside the EU, per their specific requirements.
Please dispose of this product in accordance with local regulations at the collecting
point specified for electrical and electronic equipment. If you have any questions,
please contact the responsible authority or the distributor from which you purchased
this device. Should this device be passed on to other parties (for private or profession
al use), the content of this regulation must also be related.
Thank you for your contribution to environmental protection.
35Maintenance
Page 36
10Troubleshooting
0.000 g
10.1Error Messages
Error messages in the display draw your attention to incorrect operation or that the instrument could
not execute a procedure properly.
Message on
Display
Beeper mes
sage
no Overload – The weight on the pan
no Underload – Sample pan holder
no Weight display flashes / Out of
no No tare executed with open heat
Cause Rectification
exceeds the weighing capacity of
the balance.
is missing.
zero range – When the instrument
was switched on or upon zeroing,
one or more limits were exceed
ed. The usual reason for this
message to appear is when there
is a weight on the weighing pan
when the balance is switched on.
ing module.
– Reduce the weight of the
sample.
– Insert sample pan holder.
If needed, reboot the system
by disconnecting and con
necting to the mains.
– Remove the weight.
– Close heating module.
36 Troubleshooting
TARE Missing tare weight
ERR.01 No stability during adjustment or
during taring or getting the initial
sample weight with closed heat
ing module.
– Tare empty pan and load
pan with sample before start
ing the drying.
1 Ensure ambient conditions
and an optimum location.
2 Take care that no part of the
sample or the sample pan
touches the draft shield or the
sample pan handler.
3 Ensure that the sample pan
holder is correctly installed
as well as not defect.
4 Highly volatile substances in
the sample also prevent a
stable weighing result being
detected since the sample is
continuously losing weight.
Page 37
Message on
Display
ERR.02 Wrong adjustment weight on the
ERR.03 Sample weight out of tolerance.
ERR.08 Temperature entry missing.
ERR.10 The current detected temperature
ERR.11 Over heating – the heating mod
ERR.12 Wrong cell data. Please contact METTLER TOLEDO
ERR.13 Program memory is defective. Please contact METTLER TOLEDO
ERR.14 Temperature sensor of load cell is
ERR.15 Temperature sensor of heating
ERR.16 Wrong load cell brand. Please contact METTLER TOLEDO
ERR.17 Wrong type data set. Please contact METTLER TOLEDO
Legend
Beeper mes
sage
Non-critical error Quick beep for three times
Cause Rectification
pan.
Either no weight, or the wrong
weight, has been placed on the
sample pan during adjustment.
(This message is also displayed
if you do not remove the weight
when prompted to do so by the
instrument.)
The temperature adjustment was
aborted due to lack of input
(timeout).
is higher that the target tempera
ture.
ule exceeds the maximum tem
perature.
defective.
module is defective.
– Repeat the adjustment
process and load the
required adjustment weight.
– Enlarge or reduce the sample
weight. The acceptable range
of the sample weight is 0.5 g
to 54 g.
– Repeat the temperature
adjustment.
– Wait until heating module
has cooled down.
1 Wait until heating module
has cooled down.
2 If the error still occurs, please
contact METTLER TOLEDO
representative.
representative.
representative.
Please contact METTLER TOLEDO
representative.
Please contact METTLER TOLEDO
representative.
representative.
representative.
Critical error Quick beep repeatedly
Urgent error Long beep repeatedly
37Troubleshooting
Page 38
10.2What to Do if…
Symptom Countermeasure
Display remains dark after
switching on
Keys and buttons do not
respond
Printer that is connected
does not print
Incorrect characters are
printed
Measurement takes too long
Instrument does not heat
after the start
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
Ensure that the instrument is connected to the power supply and
the power is on.
Check the power line fuse and replace if necessary, see Replac
ing Power Line Fuse.
If the problem persists, contact a METTLER TOLEDO representa
tive.
Reboot the system by disconnecting and connecting to the
mains.
If the problem persists, contact a METTLER TOLEDO representa
tive.
Ensure that the printer is properly connected.
Ensure that the printer is on and enabled in the menu. See User
Menu (page25)
Check the printer settings.
Change the bit/parity setting of the printer and the instrument to
8/NO.
Check if both instruments have the same baud rate setting, see
User Menu (page25).
You have defined an unsuitable switch-off criterion, see Method
Definition (page27).
An excessive amount of sample can also be the cause of slow
drying, likewise samples which tend to form a skin which hinders
vaporization. Perform a measurement at higher temperature.
Enlarge the surface of the sample, e.g. by crushing or grinding.
Use absorbent glass fiber filters for liquids.
If the sample is very temperature sensitive and decomposes,
reduce the temperature.
If measuring is unstable, check correct positioning of pan, sam
ple handler, sample, draft shield or sample holder.
Ensure that the heating module is closed.
Halogen lamp is defective or the heating module is overheated
and the thermal overload protection has switched off the heating.
In this case, contact your METTLER TOLEDO representative.
38 Troubleshooting
Page 39
Symptom Countermeasure
Measurement results are not
repeatable
●
Support on which the instrument is standing is not sufficiently
stable. Use a stable support.
●
Surroundings are very unstable (e.g. vibrations, air draft, humidi
ty). Provide better environmental conditions.
●
Sample has more or less moisture between sampling and start
ing the drying process.
●
Sample is not evenly dispersed on the pan.
●
Start weight has not always the same value.
●
Samples are not homogeneous, i.e. they have different composi
tions. The more inhomogeneous a sample, the larger the amount
of sample needed to obtain a repeatable result.
●
Sample does not become completely dry (e.g. awing to skin for
mation). Dry the sample with the aid of glass fiber discs.
●
Selected temperature is too high and the sample has oxidized or
decomposed. Lower the drying temperature.
●
Sample boils and the splashed drops continuously change the
weight. Lower the drying temperature.
●
Granulation is not homogeneous or too large.
●
Insufficient heating power because the protective glass of the
halogen lamp is dirty. Clean the protective glass, see Cleaning
(page33).
●
Temperature sensor is contaminated or faulty. Clean the tempera
ture sensor, see Cleaning (page33).
●
If the problem persists, contact a METTLER TOLEDO representa
tive.
39Troubleshooting
Page 40
11Technical Data
11.1General Technical Data
Heating module
Heating Module Halogen ring-shaped radiator
Temperature range 50–160 °C
Temperature programs standard, rapid
Balance
Maximum capacity 54 g
Readability 0.001 g
Minimum sample weight 0.5 g
Adjustment External weight
Moisture Content
Readability 0.01%
Repeatability (sd)
with 2 g sample
Repeatability (sd)
with 10 g sample
Materials
Heating module
Housing Plastic, PBT, Crastin SO653-GB20
Inspection window grill Plastic, PPS A504X90 (UL94-V0)
Protective glass Glass ceramics
Halogen lamp Quartz glass
Reflector Stainless steel, X2CrNiMo17-2 (1.4404)
Reflector bracket Plastic, PPS A504X90 (UL94-V0)
Draft shield, interior bottom plate Stainless steel, X2CrNiMo17-2 (1.4404)
Protection and Standards
Overvoltage category II
Degree of pollution 2
Standards for safety and EMC see Declaration of Conformity (part of standard equipment)
Range of application for use in dry interior rooms
Environmental Conditions
Height above sea level up to 4000 m
Ambient temperature range Operation:
Relative air humidity Operation:
Warm-up time At least 60 minutes after connecting the instrument to the
max. 0.15%
max. 0.05%
+10 °C to 30 °C
(operability guaranteed 5 °C to 40 °C)
Storage:
-20 °C to +60 °C
10% to 80% up to 31 °C, linearly decreasing to 50 % at
40 °C, noncondensing
Storage:
20% to 80%
power supply; when switched on from standby, the instru
ment is ready for operation immediately.
40 Technical Data
Page 41
Power Supply
115 V AC Version 100 V–120 V AC, 50/60 Hz, 4 A
230 V AC Version 200 V–240 V AC, 50/60 Hz, 2 A
Voltage fluctuations -15%+10%
Power load radiator max. 400 W during drying process
Power line fuse
Interfaces
Hardware
Leveling 2 leveling screws,
Sample pan Ø 90 mm
Maximum height of sample 25 mm
Thermal overload protection Bimetallic-element switch in heating module
Dimensions with the heating mod
ule closed (w x h x d)
Weight 4.1 kg
115 V: 5 x 20 mm, F6AL250V (6A, fast-acting, low-breaking
capacity)
230 V: 5 x 20 mm, F2.5AL250V (2.5A, fast-acting, low-breaking
capacity)
1 x RS232C (9-pin socket)
Level indicator
183 x 161 x 334 mm
See Dimensions (page42)
41Technical Data
Page 42
11.2Dimensions
341
161
101
99
219
334
349
144
183
All dimensions in mm
42 Technical Data
Page 43
11.3Interface Specification
15
9 6
IN
GN
D
OUT
HAND
SHAKE
IN
DATA
OUT
RxD
TxD
CTS
RTS
OUT
POWER
SUPPL
Y
+12V
RS232C
Schematic Item Specification
Interface type Voltage interface according to EIA
RS-232C/DIN66020 CCITT V24/V.28)
Max. cable length 15 m
Signal level Outputs:
+5 V … +15 V (RL = 3–7 kΩ)
–5 V … –15 V (RL = 3–7 kΩ)
Inputs:
+3 V … +25 V
–3 V … -25 V
Connector Sub-D, 9-pole, female
Operating mode Full duplex
Transmission
Bit-serial, asynchronous
mode
Transmission
ASCII
code
Baud rates see setting options
Bits/parity see setting options
Stop bits see setting options
Handshake None, XON/XOFF, RTS/CTS (software
selectable)
Power supply for
optional devices
+ 12 V, max 150 mA (only if pin 1 is con
nected to Ground)
11.4MT-SICS Interface Commands and Functions
Many of the instruments and balances used have to be capable of integration in a complex computer
or data acquisition system.
To enable you to integrate balances in your system in a simple manner and utilize their capabilities to
the full, most balance functions are also available as appropriate commands via the data interface.
All new METTLER TOLEDO balances launched on the market support the standardized command set
"METTLER TOLEDO Standard Interface Command Set" (MT-SICS). The commands available depending
on the functionality of the balance.
For further information please refer to the Reference Manual MT-SICS downloadable from the Internet
under
u www.mettler-toledo-support.com
43Technical Data
Page 44
12Accessories and Spare Parts
Description Part No.
Power supplies
Country-specific 3-Pin power cable with grounding con
ductor.
Power cable AU 00088751
Power cable BR 30015268
Power cable CH 00087920
Power cable CN 30047293
Power cable DK 00087452
Power cable EU 00087925
Power cable GB 00089405
Power cable IL 00225297
Power cable IN 11600569
Power cable IT 00087457
Power cable JP 11107881
Power cable TH, PE 11107880
Power cable US 00088668
Power cable ZA 00089728
Cables for RS232C interface
RS9 – RS9 (m/f): connection cable for PC, length = 1 m 11101051
Printers
44 Accessories and Spare Parts
RS232 - USB converter cable – Cable with converter to
connect a balance (RS232) to a USB port
RS-P25 printer with RS232C connection to instrument 11124300
Paper roll, set of 5pcs 00072456
Paper roll, self-adhesive, set of 3pcs 11600388
Ribbon cartridge, black, set of 2pcs 00065975
RS-P26 printer with RS232C connection to instrument
(with date and time)
Paper roll, set of 5pcs 00072456
Paper roll, self-adhesive, set of 3pcs 11600388
Ribbon cartridge, black, set of 2pcs 00065975
64088427
11124303
Page 45
Sample Pans
40
60
80
100
140
160
180
∞C
120
40
60
80
100
140
160
180
∞C
120
Certificate of
thermometer
40
60
80
100
140
160
180
∞C
120
40
60
80
100
140
160
180
∞C
120
Certificate of
thermometer
Aluminum sample pan, HA-D90, set of 80pcs 00013865
Adjustment / Test Parts
Professional aluminum sample pan, extra strong, set of
11113863
80pcs
Stainless steel reusable sample pan 6 mm, DA-DR1, set
00214462
of 3 pcs
Textile weighing pan HA-CAGE, 1 pcs 00214695
Adjustment weight, 50g(F1) 11119460
Temperature adjustment kit HE-TCC, certified 30134141
Temperature adjustment kit HE-TC 30134140
Miscellaneous
In use cover 30209145
45Accessories and Spare Parts
Page 46
Spare Parts
Glass fiber filter (for Liquids), set of 100pcs 00214464
Sample pan handler 30104816
Sample pan holder 00214642
Draft Shield 30104817
Reflector ring 30104847
46 Accessories and Spare Parts
Protective Glass 30104845
Leveling feet (2 pcs) 30104835
Page 47
13Appendix
120 °
C
13.1How to Obtain Best Results
In this section you will find important information on how to obtain optimum results. You will discover
which parameters influence the measurement process and how you can optimize the settings of your
instrument to achieve the best measurement results.
13.1.1Measurement Principle of Halogen Moisture Analyzer
Your instrument performs measurements based on the thermogravimetric principle, i.e. the moisture
is determined from the weight loss of a sample dried by heating.
In principle, your instrument thus comprises two instruments: An
analytical balance and a heating module. In contrast to other
thermogravimetric methods (drying oven, infrared, microwave),
the Halogen Moisture Analyzer operates with halogen heating
technology. This ensures fast heating of the sample and thus
guarantees rapid availability of the measurement results.
Irrespective of the measurement method, a correct preparation of the sample and the correct choice of
the following measurement parameters improve the quality of the measurement result:
●
Sample size
●
Drying temperature
●
Switch-off mode
●
Drying time
Attention
Inappropriate setting of these parameters can cause the results to be incorrect or misleading. For this
reason, check that the results for each type of sample are what might reasonably be expected.
You will find detailed information on the relationships between these parameters in the delivered appli
cation brochure «Guide to Moisture Analysis».
In practice not only the quality of the measurement results, but also the speed of the measurement
process is important. Thanks to its drying principle (heat generated by a halogen radiator), the Halo
gen Moisture Analyzer is very fast. You can increase the speed even further through optimum setting of
the instrument, e.g. using the drying program «Rapid».
The optimum drying temperature and the drying time are dependent on the nature and size of the sam
ple and on the desired accuracy of the measurement results. These can be determined only by experi
ment.
13.1.2Notes on Adjustment of Balance and Heating Module
The instrument can be adjusted using appropriate accessories.
A Moisture Analyzer is typically used in place of or in addition to the drying oven method. In an oven
heat energy is transferred by the flow of air, which establishes an equilibrium between the sample tem
perature and the ambient temperature. This is not the case in a Moisture Analyzer. The actual sample
temperature primarily depends on the specific absorption properties of the sample (dark samples
absorb more heat), which can change during the measurement process. There can also be differences
between the temperature at the surface of the sample and the temperature inside the sample. The heat
output is therefore not dependent on the true sample temperature but instead is regulated by a temper
ature sensor underneath the halogen heating module.
For the reasons explained above, the sample temperature will be slightly different than the temperature
shown on the instrument display. By regularly testing or adjusting the drying unit, you will ensure a
consistent and reproducible heat output for the entire lifetime of your instrument.
47Appendix
Page 48
Note:
●
METTLER TOLEDO offers an adjustment service – please contact your METTLER TOLEDO represen
tative.
●
We recommend to adjust the instrument exclusively under operating conditions.
●
After the temperature sensor or the protective glass have been cleaned, we recommend adjusting
the heating module using the temperature adjustment kit, see Accessories and Spare Parts. For
the procedure for testing or adjusting the drying unit (balance/heating module), see Test/Adjust.
13.1.3Optimum Sample Preparation
Preparation of the sample is decisive for the speed of the measurement process and the quality of the
measurement results.
Note:
Basic rules for the preparation of your sample:
The amount of sample you select should be as small as possible and only as large as necessary.
Excessive amounts of sample require more time for drying and thus prolong the measurement
process. If the amount of sample is too small, the measurement result may possibly not be represen
tative of the true moisture content. The following always holds: The greater the inhomogeneity of the
sample, the larger the amount of sample needed to obtain a repeatable result .
Distribute the sample evenly over the sample pan
You thus increase the surface area of the sample and facilitate heat absorption. The base of the pan
should be evenly covered.
With liquid, fat-containing, melting and highly reflecting samples, you should use the sample with the
glass fiber filter available as optional equipment, see Accessories and Spare Parts (page44). This
also applies to samples which form a skin on their surface when heated. The glass fiber filter ensures
even and rapid heat distribution and prevents the formation of a skin on the sample surface.
13.1.4Further Information on Moisture Determination
You will find further information on the moisture determination, the importance of the parameters and
the preparation of the samples in the delivered application brochure «Guide to Moisture Analysis» deal
ing with moisture determination, see Accessories and Spare Parts (page44).
Useful tips and a variety of example methods (comparison between Halogen Moisture Analyzer results
and the oven drying method) can be downloaded from:
u www.mt.com/moisture
If you require information on specific applications, your METTLER TOLEDO Customer Service will be
pleased to help you.
Attention
Moisture determination applications must be optimized and validated by the user according to local
regulations. Application-specific data provided by METTLER TOLEDO is intended for guidance only.
48 Appendix
Page 49
Index
A
Accessories 44
C
Cleaning 33
D
Dimensions 42
Disposal 35
Drying mode 12
Drying Program 27
Rapid 27
Standard 27
E
Error messages 36
F
First measurement 22
Fuse 35, 41
G
General safety information 6
I
Intended Use 6
Interface 41, 43
MT-SICS 43
Introduction 5
K
Keys 11
L
Leveling 17
Location 15
M
Maintenance 33
Cleaning 33
Power line fuse 35
Measurement
First 22
Performing 30
Measurement principle 47
Menu 25
Method definition 27
Methods 27
MT-SICS 43
O
Operation keys 11
P
Parameter 27
Power line fuse 35
Power supply 41
Printout 31, 32
Progress indicator 12, 13, 23,
31
Protective clothing 7
R
Rapid drying 27
Replace
Power line fuse 35
RS232C 43
S
Safety Information 6
Intended use 6
Protective clothing 7
Signal words 6
Staff safety 7
Warning Symbols 6
Sample preparation 48
Selecting the location 15
Settings 27
Display Mode 28
Drying program 27
Switch-off criterion 27
Temperature 27
Signal words 6
Spare parts 44
Staff Safety 7
Standard drying 27
Switch-off criterion 27
T
Technical data 40
Temperature 27
Thermogravimetric 47
Troublesooting 36
U
User guidance 12, 14, 22,
31
User menu 25
Settings 25
W
Warning Symbols 6
Index 49
Page 50
Page 51
Page 52
GWP®
is the global weighing standard, ensuring consistent accuracy
of weighing processes, applicable to all equipment from any manufacturer. It helps to:
• Choose the appropriate balance or scale
•
Calibrate and operate your weighing equipment with security
• Comply with quality and compliance standards in laboratory and
manufacturing
www.mt.com/GWP
GWP
®
Good Weighing Practice
™
www.mt.com/moisture
Mettler-Toledo AG, Laboratory Weighing
CH-8606 Greifensee, Switzerland
Tel. +41 (0)44 944 22 11
Fax +41 (0)44 944 30 60
www.mt.com
Subject to technical changes.
© Mettler-Toledo AG 09/2014
30090236B en
For more information
*30090236*
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