RADWAG MAC Series User manual

User manual no.:
LMI-51-05/03/13/A
MOISTURE
ANALYZER
MAC
SERIES
BALANCES AND SCALES
RADWAG 26 – 600 Radom, Bracka 28, POLAND
Phone: [phone], fax. [phone]
[e-mail]
www.radwag.com

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MARCH 2013

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1. TECHNICAL DATA .......................................................................... 5
2. BASIC INFORMATION .................................................................... 6
2.1. Intended use .......................................................................................... 6
2.2. Inappropriate use ................................................................................... 7
2.3. Principles of safety use .......................................................................... 7
2.4. Warranty ................................................................................................ 8
2.5. Monitoring metrological parameters of the instrument ........................... 8
2.6. Data included in this user manual .......................................................... 8
2.7. Staff competence ................................................................................... 9
3. TRANSPORT I STORAGE .............................................................. 9
3.1. Delivery check ....................................................................................... 9
3.2. Packaging .............................................................................................. 9
4. UNPACKING, ASSEMBLING AND STARTUP ................................ 9
4.1. Assembling and place of use ................................................................. 9
4.2. Unpacking ............................................................................................ 10
4.3. Level setting......................................................................................... 11
4.4. Standard delivery components ............................................................ 11
4.5. Cleaning .............................................................................................. 11
4.6. Plugging to mains ................................................................................ 12
4.7. Connecting peripheral equipment ........................................................ 12
5. KEYBOARD – FUNCTION KEYS .................................................. 13
6. START-UP ..................................................................................... 14
6.1. Moisture analyzer temperature stabilization period .............................. 14
7. USER MENU.................................................................................. 15
7.1. Moving through user menu .................................................................. 15
7.2. Return to weighing mode ..................................................................... 17
8. WEIGHING..................................................................................... 18
9. MOISTURE ANALYZER MAIN PARAMETERS. ADJUSTING
MOISTURE ANALYZER OPERATION TO AMBIENT
CONDITIONS AT A WORKSTATION ........................................... 18
9.1. Setting filtering level ............................................................................. 19
9.2. Autozero function ................................................................................. 20
9.3. Access to library of drying programs .................................................... 21
9.4. Backlight of measurement result (display backlight) ............................ 22
9.5. Brightness adjustment of display backlight .......................................... 23
9.6. “beep” sound – reaction on pressing a function key ............................ 24
10. MOISTURE ANALYZER ADJUSTMENT ....................................... 25
10.1. External adjustment ............................................................................. 26
10.2. Adjustment test .................................................................................... 27
10.3. Drying chamber adjustment ................................................................. 28
10.4. Adjustment report printout ................................................................... 30
11. DETERMINING CONTENT OF A PRINTOUT FOR GLP
PROCEDURES .............................................................................. 31
12. DATE AND TIME SETTINGS ........................................................ 34
12.1. Setting time .......................................................................................... 34
12.2. Setting date.......................................................................................... 35

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13. RS 232 FUNCTIONS ..................................................................... 35
13.1. Baud rate setting .................................................................................. 35
13.2. Determining data type sent via RS 232 output..................................... 36
13.3. Printout interval .................................................................................... 37
13.4. Determining range of data sent during drying process ........................ 37
14. DRYING PROCESS WITH USE OF SHORTENED MENU .......... 38
14.1. Setting means of finish mode............................................................... 39
14.2. Active drying mode .............................................................................. 40
14.3. Type of displayed measurement result ................................................ 43
15. DRYING PROCESS WITH USE OF DRYING PROGRAM
LIBRARY ........................................................................................ 44
15.1. Sample mass control ........................................................................... 46
16. DRYING PROCESS ...................................................................... 47
17. SET OF COMPUTER – MOISTURE ANALYZER COMMANDS ... 50
18. ERROR MESSAGES ..................................................................... 52

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1. TECHNICAL DATA
Type
MAC 50/1/NH
MAC 50/1/WH
MAC 50/1/NP.
MAC 50/1/NS
MAC 50/NH
MAC 50/WH
MAC 50/NP.
MAC 50/NS
MAC 110/NH
MAC 110/WH
MAC 110/NP.
MAC 110/NS
MAC 210/NH
MAC 210/WH
MAC 210/NP.
MAC 210/NS
Max capacity
50 g
50 g
110 g
210 g
Readability
0,1 mg
1 mg
1 mg
1 mg
Tare range
- 50 g
- 50 g
- 110 g
- 210 g
Max sample
mass
50 g
50 g
110 g
210 g
Readability of
moisture
readout
0,0001% 0,001 %
Repeatability
of moisture
content
reading
+/-0,24% (sample mass up to 2g),
+/-0,06% (sample mass up to 2-10g),
+/-0,04% (sample mass over 10g)
Drying
temperature
range
max. 160 °C (model NH, NP and NS)
max. 250 °C (model WH)
Heating
module
halogen (model NH and WH)
infrared emitter (model NP)
heater in metal cover (model NS)
Drying modes
4 drying modes: standard, quick, step, mild
Finish mode
3 modes: automatic, time defined, manual
Working
temperature
+10 °C - +40 °C
Power supply
230V 50Hz AC / 400W
Display
LCD (backlit)
Pan size
Φ 90 mm, h = 8 mm
Drying
chamber
dimensions
120 x 120 x 20 mm
Net weight /
Gross weight
5,1 / 7,2 kg
Packaging
dimensions
455 x 315 x 302 mm

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Dimensions:
2. BASIC INFORMATION
CAUTION!
Use of moisture analyzer MAC series conversely to safety provisions and
other than following guidelines of this user manual may be hazardous to
human health and life. Never use the moisture analyzer is explosive area.
Moisture analyzer is not intended to use in areas with danger of
explosion. The inner shields of a moisture analyzer may heat up to 400
°C. Moisture analyzer’s nominal voltage is 230 VAC, thus it is necessary
to use the device in accordance with safety principles of low-voltage
instruments.
A symbol visible on instrument’s top cover (see below) is a warning
against its hot surface.
2.1. Intended use
A moisture analyzer MAC series is designed to determine relative moisture
content in small samples of various substances, determine dry mass content in
small samples and determine mass of weighed objects.
MAC series ensures fast and precise determination process of water content in
a tested sample, and application of a LCD display considerably simplifies
functioning, operation and carrying out measurement processes. Moisture
analyzer MAC series can be used to determine humidity content of different
materials.

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At the initial stage of measurement, the device precisely determines the mass
of an object placed on instrument’s weighing pan. As mass reading is
stabilized, the sample is quickly heated by halogen lamps or IR emitters or a
heater in metal cover, causing humidity evaporation from the tested sample.
While sampling, the moisture analyzer is continuously checking the decline of
mass, and on calculation, it displays current moisture content in a tested
sample.
Compared to conventional methods of humidity content determination of
various substances, application of moisture analyzer MAC series considerably
shortens measurement time and simplifies testing procedure. The moisture
analyzer allows for setting multiple parameters which influence the procedure
of moisture content determination in a sample, such as: temperature, time,
drying modes, etc.).
2.2. Inappropriate use
CAUTION!
Do not open the drying chamber during drying process. Moisture analyzer
features a halogen lamp which is a very powerful heat source. Thus, user
should pay special attention no to touch those elements of a moisture analyzer
that get hot while drying procedure (i.e.: disposable pan, pan handle, and inner
shields of the drying chamber).
Remember that some of tested samples may become dangerous if heated
(appearance of poisoning vapours, danger of ignition or explosion).
A moisture analyzer MAC series is not intended for dynamic weighing. Even if
small amounts of a sample are added to taken off the weighing pan, the mass
readout should only be taken only on stabilization of measurement result
(appearance of stability pictogram on the display).
Do not place any magnetic materials on the weighing pan, as this can cause
damage of the measuring system of the instrument. Be sure to avoid impact
shock and overloading the balance in excess of the prescribed maximum
measuring range (max capacity), minus any possible tare weight that has been
applied).
Never use the moisture analyzer in an environment endangered by an
explosion. This moisture analyzer has not been adjusted for operation in
explosive areas. There must not be any modification made to the moisture
analyzer.
2.3. Principles of safety use
Use of moisture analyzer MAC series conversely to safety principles and user
manual guidelines may be hazardous to operator’s health and life. It is
obligatory to acknowledge with safety principles listed in the user manual:

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- use a moisture analyzer only to determine humidity content in samples and
determine mass of a tested sample. Any other use of the moisture analyzer
may be dangerous either to the device or the user,
- before switching on the moisture analyzer, make sure that the nominal
power of the device specified on its data plate, is compatible with the
supply in the mains to which the moisture analyzer will be plugged in,
- change of heating element can only be carried out by authorized
service,
- protect moisture analyzer against contacts with liquids,
- as the area around moisture analyzer gets heated, do not put any
inflammable objects or substances in close distance to the device,
- substance containing toxic or caustic vapour should be tested in a
chamber which absorbs the vapours,
- samples of substances that produce inflammable vapours if heated should
be relatively small (small sample mass), and drying process should be
carried out in low temperatures,
- remember that aggressive substances may cause corrosion to the device.
2.4. Warranty
Warranty does not cover the following cases:
• Not observing the regulation listed in user manual,
• Using the moisture analyzer conversely to its intended use,
• Any modifications of moisture analyzer or cases when its housing is
opened (damaged protective stickers),
• Mechanical defects and defects caused by media, liquids, water and
natural wearing off,
• Improper placing of defects of electrical network / mains,
• Overloading of measuring mechanism of the moisture analyzer.
2.5. Monitoring metrological parameters of the instrument
Metrological characteristics of the moisture analyzer requires periodical
inspection carried out by its operator. Inspection frequency is conditioned by
ambient conditions in which the moisture analyzer is used, types of performed
processes and accepted quality management system in an organization.
2.6. Data included in this user manual
Please read the user manual carefully before instrument’s plugging to mains
and startup, even if the user is experienced with this type of moisture
analyzers.

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2.7. Staff competence
Moisture analyzer MAC series should only be operated and maintained by
personnel who is trained and experienced in using this type of instruments.
3. TRANSPORT I STORAGE
3.1. Delivery check
Please check the packaging immediately upon delivery and the device during
unpacking for any visible signs of external damage.
3.2. Packaging
Please retain all parts of the original packaging should the moisture analyzer
be transported in the future. Only the original packaging should be used for
dispatching the moisture analyzer. Before packing, disconnect all attached
cables and remove any loose/movable parts (weighing pan, shields, inserts).
Place moisture analyzer and its components in their original packaging, and
protect them against damage during transport.
4. UNPACKING, ASSEMBLING AND STARTUP
4.1. Assembling and place of use
• A moisture analyzer should be stored and used in locations free of
vibrations and shakes, free of air movement and dust, located at the max
altitude of 2000 above sea level,
• Moisture analyzer’s place of use should ensure good air circulation around
the instrument (approximately 20 cm fee space around the moisture
analyzer and 1 m free space over it),
• Ambient air temperature in the weighing room should not exceed the range
of:
+10 °C ÷ +40 °C,

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• Ambient relative humidity should not exceed 80% in the temperature up to
31°C, and decrease linearly to 50 % of relative humidity in temperature
40°C,
• A moisture analyzer should be located on a stable wall console desk or a
stable working table which is not affected by vibrations and distant from
heat sources,
• Take special safety measures when weighing magnetic objects, as part of
the balance is a strong magnet.
4.2. Unpacking
Carefully remove the moisture analyzer from its packaging, remove the plastic
and foil transport protective elements. Gently place the moisture analyzer in its
intended place of use.
Assembly the components of drying chamber, following guidelines from below
figure:
Assembling moisture analyzer components:
- Assembly insert of the drying
chamber’s basis
- Assembly drying chamber
cover,
- Assembly drying pan handle,
- Assembly drying pan bracket,
- Assembly the disposable drying
pan.
Setting drying pan’s supporter (bracket).

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When assembling the pan supporter
(bracket) pay special attention to the
correct positioning of its mandrel. The
mandrel features a cut for its unique
positioning against the pan handle, thus
preventing their contact and friction.
Setting pan’s bracket:
- On assembling the pan bracket onto
the mandrel, turn the bracket slightly,
so that the cut on the mandrels are
located in their unique and correct
position,
- When turning the mandrel use most
gentle movements not to damage
moisture analyzer’s measuring
system.
4.3. Level setting
Before plugging to mains, level the moisture analyzer using
adjustable feet. Turn the feet in a way that the air bubble of
the level is located centrally.
4.4. Standard delivery components
• A moisture analyzer MAC series
• Insert of drying chamber basis.
• Drying chamber shield.
• Drying pan handle.
• Drying pan bracket.
• Disposable pan.
• Power cord.
• User manual (CD).
4.5. Cleaning
Remember to unplug the moisture analyzer from mains before any
cleaning activities.
Clean the moisture analyzer using a damp cloth by gentle rubbing
contaminated places.

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Remember to remove the drying pan from the drying chamber before its
cleaning. If the drying pan assembly is installed while cleaning it may
damage instrument’s measuring system, thus remove it from the bracket.
4.6. Plugging to mains
A moisture analyzer can be plugged to mains only by means of original
power cord, which comes standard with the moisture analyzer. Rated
voltage (specified on device’s data plate) must be compatible with mains
rated voltage.
The power cord can be connected only to socket with ground contact. Plug the
power cord to the moisture analyzer. The moisture analyzer’s power plug is
located at the back of instrument’s housing.
On plugging to mains moisture analyzer’s displays software’s name and
number, after which the indication changes to 0.000 g (in case of a moisture
analyzer with measuring accuracy 1 mg) or 0.0000 g (in case of a moisture
analyzer with measuring accuracy 0,1 mg). In mass indication is other than
zero press O/T key located on the overlay.
4.7. Connecting peripheral equipment
The moisture analyzer must be unplugged from the mains before connecting or
disconnecting any peripheral equipment (printer, PC computer). Use only
peripheral equipment recommended by the manufacturer with your moisture
analyzer. These have been ideally coordinated to your moisture analyzer. On
connecting a peripheral device, plug the moisture analyzer to mains.

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5. KEYBOARD – FUNCTION KEYS
Start/Stop key –
starting / ending drying process
according to selected drying mode.
Esc
key, abandoning introduced changes / exit one
level higher in menu structure.
Group of navigation keys –
change of parameters
value; moving in moisture analyzer’s menu.
Print/Enter key –
sending display status to
peripheral device (Print) or confirmation of selected
value or function (Enter).
ZERO/TARE key – zeroing moist
ure analyzer’s
indication.
On/Off key – switch on/off display of moisture
analyzer. On switching of the display of the device,
other subassemblies are continuously supplied, and
the moisture analyzer is in standby mode.

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Display key – changes type of
data displayed during
and after drying process.
Setup key – enter to main menu.
Test menu key –
function key for selecting drying
modes.
6. START-UP
On plugging to mains the moisture analyzer carries out a display test (all pictograms
and digits appear on the display). Then the display shows software name and
number, and enters weighing mode.
6.1. Moisture analyzer temperature stabilization period
Before start of measuring processes, it is necessary to wait until the moisture
analyzer is thermally stabilized. It is a period of so called moisture analyzer’s
self-heating. For moisture analyzer MAC series which before plugging to mains
was stored in room temperature, self-heating period takes approximately 30
minutes. For moisture analyzers that were stored in much lower temperatures
before plugging to mains (e.g. during winter period) thermal stabilization should
last approximately 4 hours. During self-heating period the indications on
moisture analyzer’s display may change. Correct operation of a moisture
analyzer is possible within temperature range specified in the technical
parameters, see point 1. It is recommended that ambient temperature changes
at moisture analyzer’s place of use are very small (slow).

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7. USER MENU
User menu is divided into 5 basic function groups.
7.1. Moving through user menu
An operator moves through moisture analyzer’s menu using keys on overlay’s
keyboard:
Setup key. Entering main menu.
Navigating key UP –
Selecting group of parameters one by
one upwards / changing par
ameter value by one value
upwards.
Navigating key DOWN – Selecting group of parameters one
by one downwards / changing parameter value by one value
downwards.
Navigating key RIGHT – Selecting group of parameters for
activating. On pressing the ke
y, the display indicates the
first parameter in a selected group.
Navigating key LEFT – Exit to previous menu level, e.g. to
main menu.
Esc key. Abandon parameter changes.
Print/Enter key. Accept / confirm introduced changes

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Names of function groups and their content:
P1 CAL [Adjustment]
P1-01 ECAL | [external adjustment]
P1-02 tCAL | [adjustment test]
P1-03 tE_CAL | [drying chamber adjustment]
P1-04 CALr | [adjustment report printout]
P2 GLP [Good Laboratory Practice]
P2-01 USr | _ [name of user]
P2-02 PrJ | _ [name of project]
P2-03 Ptin | YES/no [printout of measurement time]
P2-04 PdAt | YES/no [printout of measurement date]
P2-05 PUSr | YES/no [printout of user name]
P2-06 PPrJ | YES/no [printout of project name]
P2-07 PId | YES/no [printout of moisture analyzer’s factory
no.]
P2-08 PFr | YES/no [printout of frames]
P3 tinnE [Setting time and date of the moisture analyzer]
P3-01 StinnE | [setting time]
P3-02 SdAtE | [setting date]
P4 rEAd [Main user parameters]
P4-01 AuE |Stand/SLouu/Fast [filtering level]
P4-02 Auto | On/OFF [autozero]
P5 Print [Data transmission – RS 232]
P5-01 bAud | 2400/4800/9600/19200 [baud rate]
P5-02 PStb | YES/no [measurement result printout: stable / unstable]
P5-03 LinE_t | 1/2/3/5/10/20/30/60/120/180 [printout interval]
P5-04 Prn_Pc | YES/no [printout to computer]

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P6 othEr [Other functions]
P6-01 Libr | YES/no [access to drying modes library]
P6-02 bL | YES/no [display backlight]
P6-03 bLbA |no/20/30/40/50/60/70/80/90/100 [display brightness]
P6-04 bEEP | YES/no [beep sound on pressing keys]
P6-05 PrnS | [printout of moisture analyzer
parameters]
7.2. Return to weighing mode
CAUTION
Changes introduced in moisture analyzer memory will be permanently
saved on return weighing with procedure of saving changes.
Press Esc key for several times, until the display indicates command
SAuE ?
Then select one of below option:
• Print/Enter - key – save (accept) changes
• Esc - key – abandon introduced changes, and leave to
balance menu.

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8. WEIGHING
Before start of measuring process or in case of essential change of ambient
conditions at a workstation (e.g. ambient temperature change at a workstation) the
moisture analyzer requires adjusting. The procedure of moisture analyzer
adjustment is described further in this user manual.
• Before start of measuring procedure, it is recommended to load the moisture
analyzer’s pan a few times with mass close to the max capacity,
• Check if unloaded moisture analyzer indicates “precise zero” - and
whether measurement is stable - , if not press ESC/TARE key,
• Place weighed object on moisture analyzer’s weighing pan and read result
only on stabilization of measurement result,
• Mass indication of a load placed on moisture analyzer’s weighing pan can be
tarred for multiple times by pressing ESC/TARE key (pay attention not to
exceed maximal capacity of a moisture analyzer by applying multiple tare
function).
During times between carrying out the following measurement series do not unplug
the moisture analyzer from mains. It is recommended to switch off moisture
analyzer’s display by pressing ON/OFF key. On repeated pressing of the ON/OFF
key the moisture analyzer is ready for operation and carrying out the following
measurements.
9. MOISTURE ANALYZER MAIN PARAMETERS. ADJUSTING MOISTURE
ANALYZER OPERATION TO AMBIENT CONDITIONS AT A WORKSTATION
• Setting filtering level – AuE.
• Autozero function – Auto.
• Access to library of drying modes – Libr.
• Backlight of measurement result - bl.
• Display brightness - blbA
• “Beep” sound – reaction on pressing a key – bEEP.

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User of a moisture analyzer can adjust its operation to current ambient conditions at
a workstation (by changing the value of digital filters), or according to user needs
(autozero operation or display backlight) by using parameters grouped in this
function.
9.1. Setting filtering level
- use navigating keys to select desired filter value,
AuE = StAnd - (normal) – normal operation conditions,
AuE = Slouu - (slow) – harsh operation conditions – vibrations, etc.,
AuE = Fast - (fast) – good operation conditions – no vibrations, etc.

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CAUTION:
The stronger filtering setting the longer weighing time.
9.2. Autozero function
In order to ensure moisture analyzer’s precise mass indication, autozero (Auto)
software parameter has been introduced. The application of this function is
automatic control and correction of zero indication. When function is enabled,
it compares moisture analyzer indications at declared time interval e.g. 1 s, on
conditions that weighing pan is unloaded and display indication is close to zero.
If results vary less than declared AUTOZERO range e.g. one division, the
moisture analyzer will zero automatically, display marker of stable
measurement result and precise zero marker .
If AUTOZERO function is enabled, then each weighing process starts from
precise zero point. There are, however, some cases when this function can be
a disturbing factor of measuring process; for instance very slow placing of load
on the weighing pan (e.g. load pouring) – in such case system of zero
indication correction can also correct actual indication of loaded mass.
Auto = On - autozero enabled,
Auto = OFF - autozero disabled.