Citizen MB Series Operating Manual
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Citizen MB Series Operating Manual

Moisture balance
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Summary of Contents for Citizen MB Series

  • Page 1 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"#$%&'()!*+,+-.)!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"*!/)($)%!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

  • Page 2: Table Of Contents

    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.

  • Page 3: Application

    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.

  • Page 4: Structure And Principle Of Operation

    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.

  • Page 5: Key Description

    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.

  • Page 6: Unpacking And Setting Up The Moisture Analyzer

    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.

  • Page 7: Turn Moisture Balance On

    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.

  • Page 8: Preparation Samples To Drying

    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 –...

  • Page 9: Choice Parameters Of Drying

    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.

  • Page 10: Control Reliability Of Temperature Annunciators

    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.
  • Page 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.
  • Page 12 Factor for correction temperature of drying Absorbing heat happens for dark colour materials. Sample can be overheated. For 120 C temperature sample absorbs heat and gets temperature about 135 C. Factor for correction temperature of drying should be defined. To define this factor control termometer with sonde is neccesary (additional equipment of moisture balance).
  • Page 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)
  • Page 14 Choose one of ways of work: rnodE 4 Weight loss 4. Percent Moisture determination with w [%] = -------------------- x 100% respect to initial weight. Initial weight Stop drying when results are the same for 3 consecutive strobe intervals or the maximum time limit has expired..
  • Page 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.
  • Page 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.
  • Page 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.

  • Page 18: Procedure Of Drying

    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.
  • Page 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.
  • Page 20 Printer prints final report: DATE 1999.01.20 TIME 10:32 MODE MASS DECREMENT 14,57% INITIAL MASS 1,926g FINAL MASS 1,645g 121 0 C TEMPERATURE DRYING TIME h:mm:ss 0:08:50 FREQUENCY OF READOUT 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).

  • Page 21: Directions For Using

    Parameters of transmission: Speed of transmission in range of 4800 bit/s Data bits STOP bits Control parity NONE Graphic schedule of drying 12. DIRECTIONS FOR USING Measurement of moisture by means of moisture balance is much faster and simplier in comparison to traditional proces (weighing - drying - weighing - counting).

  • Page 22: Optimum Parameters For Moisture

    3 - 4 0,05 Paper 2 - 4 0,07 For granulated synthetic substances Citizen offers moisture balances with capacity 0,001%. Size of sample should be about 20g, temperature of drying 130 C and time of testing samples 10s. - 22 -...

  • Page 23: Procedure Of Calibration

    14. PROCEDURE OF CALIBRATION If moisture balance is used as II lass laboratory scale do the calibration before measurement. Calibration defines relations between value if annunciator and mass of standard (calibration weight), which is load of balance and corrections if it’s meccesary.

  • Page 24: Check Correctness Of Working

    When calibration is finished display will show: Take calibration weight off scale. 15. CHECK CORRECTNESS OF WORKING Check halogen lamps) Constance temperature is kept in drying chamber –system of temperature regulation causes flashing halogen lamps according to temperature. If lamps don’t light or the light is constance not flashing – moisture should be repaired.

  • Page 25: Additional Equipment For Moisture Balances

    16. ADDITIONAL EQUIPMENT FOR MOISTURE BALANCES 1. Anti-vibration table 2. Control termometer 3. KAFKA thermal printer 4. Single pan 5. Calibration weights 6. Computer software - Pomiar WIN (WIN) 7. Moisture balances with higher temperature of weighing - to 250 - 25 -...

  • Page 26: Technical Parameters

    17. TECHNICAL PARAMETERS Type MB 200 Maximum capacity Max [g] Readability d [mg] ° C (+ 15 to + 30) ° C Temperature work Tare range -T [g] -200 Pan size [mm] !100 Power 230V, 110VA Output signal RS 232 Calibration weight Maximum sample Minimum sample...

  • Page 27: Dimensions

    17.1. DIMENSIONS - 27 -...

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