Citizen MB Series User manual

!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"#$%&'()!*+,+-.)!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"*!/)($)%!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!

- 1 -
Contents
1. Application ................................................................................................3
2. Structure And Principle Of Operation .......................................................4
3. Key Description......................................................................................... 5
4. Unpacking And Setting Up The Moisture Analyzer ..................................6
5. Turn Moisture Balance On........................................................................ 7
6. Maintenance .............................................................................................7
7. Preparation Samples To Drying ............................................................... 8
8. Choice Parameters Of Drying...................................................................9
9. Control Reliability Of Temperature Annunciators ...................................10
10. Programming Parameters Of Drying ....................................................10
11. Procedure Of Drying .............................................................................18
12. Directions For Using .............................................................................21
13. Optimum Parameters For Moisture ......................................................22
14. Procedure Of Calibration ...................................................................... 23
15. Check Correctness Of Working ............................................................ 24
16. Additional Equipment For Moisture Balances ......................................25
17. Technical Parameters........................................................................... 26
17.1. Dimensions ................................................................................. 27

- 3 -
1. APPLICATION
The MB 200 moisture analyzer is a precision device for the
determination of moisture content in small samples of materials by
drying the sample with halogen heaters.
The moisture analyzer is easy to use. The user sets the drying
parameters into memory, puts the samples into the weighing chamber
then starts the test. The temperature of drying is automatically regulated
and the results, elapsed time, current temperature in the chamber and
the mode are displayed during the test. The user is told when the test
has automatically stopped either due to the sample being dry and the
weight no longer changes or the elapsed time has reached the limit the
user has set. The final values are held on the display until the user
resets the balance.
The balance can be interfaced to a printer on computer. The output will
show the results as the test progresses and after the test is finished a
summary of the test can be sent to a PC or printer.

- 4 -
The following data is output: over the RS-232 interface at the end of the
test:
1. Test mode
2. Percentage moisture or percentage solids
3. Initial mass (mg)
4. Final mass (mg)
5. Drying temperature (ºC)
6. Elapsed drying time (sec)
7. Time interval between two successive measurements (sec)
2. STRUCTURE AND PRINCIPLE OF OPERATION
Moisture balance consist of precise laboratory balance and connected
drying chamber what enables to get stable temperature during
measurement. This kind of structure makes different way of moisture
measurement possible.
PRINCIPLE OF OPERATION:
•Weighing tested sample: before, during and after drying
•Automatic finish measurement when water evaporate completelly
(drying to get constance mass) or when settled time of drying
passes (drying in assumed time)
•Counting results of drying according to formula for assumed work
•Sending measure data to printer or computer when it’s neccesary
to make documentation of measurement

- 5 -
The front panel of the MB 200.
There are 4 display areas, Temperature, Time, Mode and the Main
Display. Next to the main display are 2 indicators to signify when the
display is showing a weight value (g) or a result of a drying test (%).
The keypad has 6 keys to control the operation of the balance. During
the weighing mode all keys are available. During a drying test only
the [TARE] key is available to abort the test.
3. KEY DESCRIPTION

- 6 -
4. UNPACKING AND SETTING UP THE MOISTURE ANALYZER
Unpack the moisture analyser carefully.
The carton contains :
1. Drying chamber casing
2. Weighing pan support
3. Weighing pans
4. Weighing pans, pack of 10
Place the moisture analyser on a stable weighing table.
Do not install the balance near warm and cold sources, such as windows,
radiators or air conditioners. Protect the balance from vibrations, dust and
drafts.
Turn the adjustable feet until the balance is level (check the spirit level on
the rear of balance).
Install the weighing chamber liner on the 4 supports.
Install the pan support by placing the pan stem into the receptacle in the
weighing chamber. Be careful not to press on the pan as this may damage
the balance.

- 7 -
5. TURN MOISTURE BALANCE ON
After turn power on moisture balance does two actives automatically.
First of them is heating drying chamber – halogen heater shed light.
Time of heating drying chamber is 3 min. Second activation is 3 min
stabilization entire moisture balance.
Pressing TARE key leaves procedure of every cycle and moves to
weighing.
Heating and stabilization of moisture balance should be done after first
plug to supply net.
If moisture balance is used as precise balance it should be calibrated
(calibration described in further part of instruction). If moisture balance
is used as moisture balance sett-up parameters of drying (calibration
isn’t neccesary).
6. MAINTENANCE
Moisture balance has extented user menu with:
•7 different ways of work, for every of them moisture is defined
according to format
•cells of memory where factors for correction temperature of drying
for 9 different materials are collected
Before drying all parameters should be defined. These parameters
are:
-choose numer of dried substance - SubSt -
-factor for correction temperature of drying - SubcoF –
-kind of work - rnodE -
-temperature of drying - tErnP -
-time of testing sample - Strob –
-form for displaying per cent results (how many places after dot) –
dPP –
- time of drying - intEr -

- 8 -
7. PREPARATION SAMPLES TO DRYING
Loose materials
They are dried in natural form or after comminution. Disintegration
sample makes dispersions between following measurements smaller. Mass
of ample cannot be too big. Surface of scale should be covered by thin
layer of sample.
Liquid
Semi – fluid substances are dried in constance they usually are.
Match amounts of grease in some substances make procedure of defining
moisture more difficult. In these cases use additional elements that enlarge
active surface of sample in which moisture is tested. To tested substamces
quartz sand or blotting-paper should be added. Before drying subtance
additional ingredients should be dried to lessen their moisture to 0.
Solids
Procedure of detecting moisture is slow or fast dependly on structure
of substance (dense, loose). Size of surface of solid has influence on
speed of drying and precision of measurement. Surface of substance
should the bigest as its possible. Solids emit moisture by outsider surface.
Thickness of sample is also very important
.

- 9 -
8. CHOICE PARAMETERS OF DRYING
Temperature of drying
Value depends on kind of material. Too low temperature makes
partial evaporation (sample isn’t dried completely). Too high temperature
makes deflagration substance (sample is overheated) or possibility to
appearance chemical reactions. Temperature of drying is given by factory
and trade rules. If there is no rules given temperature can be chosen
experimental.
Time of testing sample
This is range of time [given in seconds] between following
measurements of sample mass. On the basic of this criterion moisture
balance treats sample as dried. Too short time of testing sample makes
fihish of measurement too soon. Too long time of testing sample makes
oscillate around final result. Measurement is finished if 3 following results of
detecting moisture are the same. If time of testing sample is settled on 2s
drying is finished if result doesn’t change in 6 s time. If time of testing is
settled on 20s result has to be the same by 1 minute time to finish drying.
1 – correctly selected drying parameters
2 – too big sample mass or too low temperature of drying or too
short time of drying
3 – disturbances in the drying process or to long time of
sampling

- 10 -
9. CONTROL RELIABILITY OF TEMPERATURE ANNUNCIATORS
Checking if temperature of drying is conformable to temperature shown
on display of moisture balance. To control certified thermometer PT 101 is
used. It’s additional equipment of every moisture balance.
Both terometers measure temperature of air in short distance from
controled sample.
10. PROGRAMMING PARAMETERS OF DRYING
Drying is automatical. In ranges of time settled by user (time of testing
samples) balance compares mass of sample with two previous
measurement and shows moisture without delay. If 3 following
mesurements of sample mass are the same counted value is kept on
digital display, automatic measurement is finished automatically. Automatic
finish can be earlier if time of drying settled by user is shorter (refers to
rnodE 4,5,6,7)
Before drying all values should be programmed. Press key:
After pressing key F display shows order SubSt.

- 11 -
10.1. Sett-up number of sample:
it is shown in MODE
Function key Application
Changing value is done by pressing key
many times – range of numbers from
SubSt 1 to SubSt 9.
If there is no factor for correction
temperature choose SubSt 0
Confirm value
After pressing F key next parameter is
shown automatically.
10.2. Definition factor for correction temperature of drying
Value of factor is show in TEMP.
Function key Application
Change value of current flashing numer.
Values are changed by pressing key
many times in range from SubcoF 0.00 to
SubcoF 0.99
Choose value which value is settled.
Every pressing key moves cursor in left
side
Confirm value
After pressing key F next parameter is
shown automatically

- 12 -
Factor for correction temperature of drying
Absorbing heat happens for dark colour materials. Sample can be
overheated. For 120 oC temperature sample absorbs heat and gets
temperature about 135 oC. Factor for correction temperature of drying
should be defined. To define this factor control termometer with sonde is
neccesary (additional equipment of moisture balance).
Way of defining factor:
1. program all parameters of drying
2. put sample steady on scale and start drying
3. After finish drying notice time of measurement
4. take next sample and put it on scale with a bigger layout
5. insert sonde of termometer through cover of moisture balance
and dip it in sample, press key ON/OFF on control termometer
6. start procedure of drying
7. check value of temperatures on keyboard and control
termometer
8. read both values after time for first sample
9. count value of factor according to format
Moisture analyzer with control termometer

- 13 -
10.3. Choose way of working it is shown in MODE
Function key Application
Change value by pressing key- range
from rnodE 1 to rnodE 7.
confirm value.
After pressing key F next parameter is
shown automatically.
There are 3 general blocks that defines ways of working:
- get stable mass (rnodE 1,2,3)
-drying in defined time and get previous stable mass (rnodE 4,5,6)
-drying in defined time(rnodE 7)
Percent Moisture determination with respect to initial weight.
rnodE 1
1. Percent Moisture determination with
respect to initial weight.
Weight loss
w [%] = ------------------------- x 100%
Initial weight
Stop drying when results are the same for 3 consecutive strobe intervals.
rnodE 2
2. Percent solids
Current weight
w [%] = -------------------------- x 100%
Initial weight
Stop drying when results are the same for 3 consecutive strobe intervals
rnodE 3
3. Percent Moisture with respect to solids
Weight Loss
w [%] = ------------------------ x 100%
Final Weight
Stop drying when results are the same for 3 consecutive strobe intervals.

- 14 -
Choose one of ways of work:
rnodE 4
4. Percent Moisture determination with
respect to initial weight.
Weight loss
w [%] = -------------------- x 100%
Initial weight
Stop drying when results are the same for 3 consecutive strobe intervals or the
maximum time limit has expired..
rnodE 5
5. Percent solids
Current weight
w [%] = ------------------------- x 100%
Initial weight
Stop drying when results are the same for 3 consecutive strobe intervals or the
maximum time limit has expired.
rnodE 6
6. Percent Moisture with respect to
solids
Weight Loss
w[%] = ----------------------- x 100%
Final Weight
Stop drying when results are the same for 3 consecutive strobe intervals or the
maximum time limit has expired
rnodE 7
7. Percent Moisture determination with
respect to initial weight.
Weight loss
w [%] = -------------------- x 100%
Initial weight
Stop drying when the maximum time limit has expired

- 15 -
10.4. Defition temperature of drying
The temperature can be set in the range from 50ºC to 160ºC.
Function keys Applications
Change of value of current flashing
nubmer.
Values are changed by pressing key
many times in range of 0-9
Choose number which value must be
defined. Every pressing key mores cursor
in right side.
confirm value. After pressing key F next
parameter is shown automatically.
Attention:If settled temperature of drying is lower then temperature
of surrounding moisture balance will not light halogen lamps on.
10.5. Definition time of testing samples
The STROBE INTERVAL time is the time between one set of
results and the next set of results. The interval time sets how often
the current results are output to the RS-232 interface. When using
MODE 1, 2 or 3 the test will stop when 3 results are the same,
indicating that there is no more moisture to be taken from the
sample.

- 16 -
Function keys Applications
change value of digital
Values are changed by pressing key
range 0 - 9
Choose number which value must be
defined. Every pressing key mores cursor
in right side.
confirm value
After pressing key F next parameter is
show automatically.
10.6. Format of displaying results in per cents (points after dot)
Value is shown in place of main display
Function key Appropiation
Press key Funtill dPP appears on display
and its current value 0or 1
change value of digital
Values are changed by pressing key
Confirm value
After pressing F key moisture moves to
weighing mode automatically
For value parameter 0result is shown with precision 0,01%,
and for value 1with precision 0,001%. Examinate moisture with
precision to 0,001% is well-founded for samples bigger than 15 g.
Using this precision of measurement for smaller sample refers to not
stability of last point after dot of result.

- 17 -
10.7. Definition of time of drying
Value of drying time is shown in TIME
Function key Application
Change of value of current flashing
nubmer.
Values are changed by pressing key
many times in range of 0-9
Choose number which value must be
defined. Every pressing key moves cursor
in right side.
confirm value
After pressing key F next parameter is
shown automatically.
Attention:
-Max time of drying is 9h 59 minuts 59 seconds.
In case of writting uncorrect value display shows order FALSE.
Press key once again F and introduce correct value.
-Setting time of drying refers to work modes rnodE 4, rnodE 5,
rnodE 6, rnodE 7.

- 18 -
11. PROCEDURE OF DRYING
11.1. Drying
Program all parameters of drying. Put sample on scale.Press:
All values of programmed parameters appears on display. If they are
correct press key once again
If displayed values are supposed to be changed press key:
Change wrong values and start procedure of weighing. Halogen
lamps shed light - temperature regulator makes their temporary turn off
•current temperature in drying chamber appears on display
•value for defined way of work counted according to format
appears on display
•time of measurement fihish appears on display
• after automatic finish work result is kept on moisture display
Pressing TARE key makes finish measurement. Final mass of
sample appears on display.
Attention: Glass or pottery container can be used instead of
single scale (mass of container+ mass of sample <= Max of balance)

- 19 -
11.2. Register procedure of drying
Moisture balance can work:
-independently
-cooperate with thermal printer (KAFKA 1/Z)
-cooperate with computer
If moisture balance works independently result appears on main
display. After measure moisture press key
switch over state of display from moisture measurement to mass
measurement. Display shows final mass of sample .
11.2.1. Cooperation with printer
During cooperation with thermal printer (KAFKA 1/Z) results of
moisture are printed in columns. Frequency of printing results from time of
resting samples. If time of testing samples is 5s sprinter will print singular
moisture results in ranges of 5 seconds.
Measurement lasts 8 minutes and time of testing samples 5 seconds, user
gets printout with u!ytk 96 measurements.
Final report is much shorter and more extented printout. After fihish drying
(when result of moisture is on display) attach KAFKA 1/Z printer, connect it
to moisture balance and press PRINT.

- 20 -
Printer prints final report:
DATE 1999.01.20
TIME 10:32
MODE 1
MASS DECREMENT 14,57%
INITIAL MASS 1,926g
FINAL MASS 1,645g
TEMPERATURE 1210C
DRYING TIME h:mm:ss 0:08:50
FREQUENCY OF READOUT 10s
11.2.2. Cooperation with computer
Schedule of connection conductors
Following results of detecting moisture are registered and presented
in digital or graphic form (schedule). RADWAG offers softwares for
cooperation with moisture balance POMIARWIN (for WIN).