2 fp90 central processor of the fp900 systembikeitech.com/datas/es_free2/f_496e83e8b1a4f.pdf · 2...

FP900 System FP90 Central Processor

97/09 METTLER TOLEDO FP900 2-1

2 FP90 Central Processor of the FP900 System

Contents

2.1 What is the FP900 Thermosystem Used For?...................................................2-3

2.2 Attaching the Measuring Cell and Switching On ..............................................2-5

2.3 Display, Keypad and External Keyboard............................................................2-6

2.4 The Operating Mode.................................................................................................2-82.4.1 Measurements at strong electric or magnetic noise fields......................................2-8

2.5 The Temperature Program .....................................................................................2-9

2.6 Configuration Possibilities ...................................................................................2-10

2.7 Performing a Measurement..................................................................................2-11

2.8 The Display During a Measurement...................................................................2-13

2.9 Interactions During a Measurement...................................................................2-14

2.10 Evaluations, Results ..............................................................................................2-152.10.1 Statistics of the Measurement Results ....................................................................2-15

2.11 Result Output on a Dot Matrix Printer................................................................2-16

2.12 The Method Concept..............................................................................................2-17

2.13 The Calibrations ......................................................................................................2-19

2.14 Startup Procedure ..................................................................................................2-202.14.1 Attendance and Maintenance...................................................................................2-22

2.15 PC Keyboard and Bar Code Reader..................................................................2-23

2.16 Dot Matrix Printer ....................................................................................................2-24

2.17 Accessories..............................................................................................................2-25

2.18 Technical Data .........................................................................................................2-26

2.19 Error messages and Warnings............................................................................2-27

FP90 Central Processor FP900 System

2-2 METTLER TOLEDO FP900 97/10



2.1 What is the FP900 Thermosystem Used For?

The Mettler-Toledo FP900 Thermosystem comprises the FP90 Central processor (controland evaluation unit) and several measuring cells for the determination of a wide range ofthermal data. The temperature of the attached cell is measured by a precision sensor, thePt 100 sensor.

FP90 The FP90 Central Processor is a control and evaluation unit for the measuringcells, any one of which can be attached without the need for temperature recalibra-tion. The measurement parameters are entered in dialog with the 6-line liquidcrystal display on the keypad of the FP90 control unit. After the measurement, theanalysis results appear on the alphanumeric display and can be documented withan optional dot matrix printer.

It is also possible to display the information in an analog manner (light transmit-tance, bubble frequency or DTA curve as a function of temperature). Finally, theexperimental data can be transferred to a computer via a standard interface(RS232C) and there stored and processed further with the METTLER TOLEDOFP99 program.

For routine measurements, up to 50 methods can be saved in the FP90. A PCkeyboard can be attached for the entry of sample identifications, method namesand a header. Yet another useful accessory for quality control is a bar code reader,which can be attached to the PC keyboard to record sample designations auto-matically.

FP81 The FP81 Measuring Cell can be used to determine melting points and meltingranges of samples in glass capillary tubes. This measuring cell is also suitable todetermine the boiling point of a liquid or the cloud point, for instance of surfactants.

FP82 The FP82 Hot Stage is used to observe the thermal behavior of a sample under amicroscope. Here, the luminosity in the observation field can be measured with aphotomonitor and recorded.

FP83 This measuring cell serves to determine the dropping and softening points of fatsand pasty products in accordance with various national and international industrialstandards.

FP84 With this hot stage, a DTA/DSC sensor replaces the slide in the case of the simplehot stage (FP82). The temperature difference (DTA signal) between the transpar-ent sample pan and an inert reference pan is measured and recorded at the sametime as the observations are made. Based on the DTA signal which is proportionalto the heat flow to the sample, the DSC signal in milliwatts is calculated by theMettler-Toledo computer program FP99.



FP85 With the FP85 Measuring Cell, the sample is placed in a small aluminum crucibleand subjected to a temperature program. The temperature difference betweensample and inert reference crucible (DTA signal) caused by physical or chemicalchanges of the sample is measured and recorded. Based on the DTA signal whichis proportional to the heat flow to the sample, the DSC signal in milliwatts is calcu-lated by the Mettler-Toledo computer program FP99.

♣ In this Operating Instructions additional NOTES are marked with the symbol ♣.

♣ The older measuring cells of the Mettler-Toledo FP800 system (without the designationHT) can also be operated (only to 300 °C of course). In the case of the FP84, you canfollow the DTA and the photomonitor signal simultaneously if an appropriate modifica-tion is made to the connector of the FP84.



2.2 Attaching the Measuring Cell and Switching On

Before you switch on the instrument for the first time, ensure that the installation has beenperformed in accordance with the directions given in section 2.14 Startup procedure.− Position measuring cell on the left of the control unit.− Switch off FP90 Central Processor. If a measuring cell is still attached, unplug its 64-pin

connector.− If you wish to work with a PC keyboard or possibly also with a bar code reader (see

2.15 PC keyboard and bar code reader), connect the keyboard cable to the appropriate5-pin socket below the keypad of the FP90. To do this, raise the FP90 at the left (do nottilt backward, you could damage the 64-pin connector). The bar code reader is attachedto the PC keyboard (socket at right rear).

− Carefully insert 64-pin connector of the measuring cell you wish to attach in the appro-priate socket at rear of the control unit ensuring correct alignment.

♣ The FP81, 83 and 85 Measuring Cells have a switch to set the operating mode. Its set-ting has no meaning for the FP90 as the operating mode is entered using the keypad(see 2.4 The operating mode).

− Ensure that the measuring cell does not contain a sample or any packing material.− Switch on FP90:

The message "METTLER FP90 V..., SELFTEST" appears. The figures after the letter Vdenote the software version. After the self-test depending on the measuring cell, the opticaldetection system will be calibrated. The measuring cell remains idle, i.e. there is no heatercurrent yet.

Sicherungshalter Sicherungshalter v Sicherungshalter

Power Switch

Line VoltageSelector, Fuse

Power Connector

MeasuringCell Connector

Plug-in Slot forProgram Cartridge

Printer or PC Connection

::::::::::::::::::::::::

::::::::::

::::::::::

::::::::::::::::::::::::

Fuse Holder

Fig. 2-1: Rear view of the FP90 Central Processor



2.3 Display, Keypad and External Keyboard

The 6-line, high-contrast liquid crystal display is backlit; the illumination is switched offautomatically if the instrument has not been used for 5 minutes.

METTLER TOLEDO FP90 Central Processor

7 8 9

4 5 6

1 2 3

0 + _

CE

.

MENU

F1 F2 F 3 F4 F5

F6

Fig. 2-2 The keypad with the function and entry keys

6 function keys are arranged below the display. The meaning of keys F1 to F5 changesduring the operating sequence and this is why the function keys active at any one time areshown in the bottom line of the display. The F6 MENU key always has the same meaningand effects a return to the main menu.

The right side comprises the keys for numeric entries, including the clear entry key CEand the Enter key .

In addition to the numbers 0 through 9 the minus sign and the decimal point are available.This allows, e.g. the following sample identification: 24-03.194-0.

The enter key is used to close a numeric entry and to start a method. When the instrumentexpects an entry, the appropriate area is displayed in reverse video. A preset or defaultvalue is accepted by pressing or overwritten with one of the other keys (editing of in-dividual numbers of a default value is not possible with the FP90 keypad).



FP81 Melting point 10:01:43Start temp. : 120.0 °CRate : 1.0 °C/minEnd temp. : 180.0 °C Method: 11

T PROG SPECIALOUTPUTMODE METHOD

25.3 C

Choose method; pressMethod Number

Function keys

Measuring cell attachedCurrent measurement parameters

Operating mode Cell temperature

Timeo

Fig. 2-3 Example of a display in the main menu. The method number shown in reverse video indicatesthe entry mode: just type the desired number to choose.

During a measurement, its progress can be followed on the display:

Function keys

Method

Temperature unit

Status symbole

123.3T PROG RESETDISPLAY

FP81 Melting range 4'02"

C100%

0

X100%

0

Y100%

0

Z o

HOLD FAST

14

Remaining time

Cell temperature

Elapsed measurement time (black)Measuring cell attached

bar display ofmeasuring signal

Operating mode

Fig. 2-4 Example of a display during a measurement. The height of the three black bars represents thecurrent value of the light transmittance of the respective sample.

The status symbols shown above the temperature unit are explained in section 2.8.

For text entry (sample identification, method name and header), a PC keyboard (see2.15 Accessories) can be attached. You can also edit inputted texts with the left/right cursorkeys. The cursor shows the position where the next character will be entered. The homekey moves the cursor to the start of the line, the end key moves it to the right after the lastcharacter of the input field. The insert key switches from the overwrite mode (the cursor ispositioned in the form of a square on the character to be overwritten) to the insert mode(the cursor is a vertical line between the characters) and the converse. The backspace keydeletes the character to the left of the cursor, the delete key the character on which the cur-sor is positioned. Escape clears the entire entry and restores the text entered previously(like the CE key of the FP90 keypad).



2.4 The Operating Mode

The measuring cells have several operating modes and these are defined under MODE(main menu):

FP81: Melting point, melting range, cloud point, boiling point

FP81C: Clear point, cloud point, boiling point, (melting point, melting range))

FP83: Dropping point, softening point

FP84: DTA (curve only), melting range, boiling range

FP85: DTA (curve only), melting range, boiling range

2.4.1 Measurements at strong electric or magnetic noise fields

The disturbing effects of electric or magnetic fields can not be excluded completely bytechnical and constructive measurements. The goal for the construction of the instrument isthe search for an optimal balance between an absolute, under every circumstances, noisefree instrument and operating facilities of the sample insert procedure. In any case the ap-plicable standards for save operation are fulfilled. Mainly during DSC measurements dis-turbances can occur and visibly affect the measuring curve.

If your curves are showing an irregular and very noisy sight or abrupt changes in level inex-plicable by thermal reactions the utilization of walkie-talkies or other wireless phones maybe the cause. If none of these tools are identified as responsible cause, then try another in-strument arrangement or another location to reduce the influence of the disturbances. Ifnone of these changes improves the situation check the room, the closer surroundings andthe mains supply regarding possible emissions. The reduction or elimination of the sourceof disturbance can have positive effects on your health and on the measuring results of theinstrument.



2.5 The Temperature ProgramThe temperature program is entered with F2 T PROG and has the parameters:Start Temp: Start temperature. The minimum start temperature is 3 °C above ambient.Rate: Heating rate in °C/min = K/min. For isothermal measurements enter zero. For

cooling programs a negative sign is not required, but the end temperaturehas to be below the start temperature of course.

End Temp: End temperature, important only in dynamic measurements.Time iso: Duration of isothermal analyses, or isothermal time at the end of a dynamic

portion.♣ The abscissa ranges on the display and of the optional printed diagram are defined by

Time iso.Waiting: It is active as soon as the start temperature is reached and the measurement hasbeen started. This wait time ensures temperature equilibration between the furnace and thesample and this can improve the measurement accuracy in the case of samples of highheat capacity or low heat conductivity. The maximum wait time is 999 s.Stop after event: With this you define whether measurement should be discontinued afterthe thermal effect (e.g. sample melted), in other words heating is not continued up to theend temperature.Afterwards?: Here you select the behavior after the measurement. To T start: to performfurther measurements with the same temperature program. Idle: (no heater current) to saveenergy after a last measurement. At T end: the cell remains at the end temperature. PressF5 SELECT to choose!Link method: Normally this field is left empty. In case a linked method shall follow, enterthe desired method number (referring to the same cell).

T

end

start

T

Temperature

Time

A B C D E F

Fig. 2-5 The temperature program with the phases A: Controlling start temperature; B: Start tempera-ture reached (5 s); C: Optional waiting after insertion of the sample for temperature equilibra-tion; D: Dynamic measurement phase with the inputted heating rate; E: Isothermal measure-ment phase. The relevant status symbols are shown at the bottom (see chap. 2.8).

♣ Remarks to measurements with negative heating rates using the cells FP81, 83 or 85: With suffi-ciently high end temperatures the fan remains switched off. Under a critical combination of start tempera-ture and cooling rate the fan is activated during the whole measurement. Between these extremes thefan can suddenly switch on, causing an Offset of the FP85 signal.



2.6 Configuration Possibilities

Via F5 SPECIAL in the main menu and F2 CONFIG, you have the following setting op-tions:

F1 CLOCK: This is used for setting the built-in clock, the date and the sequence of therepresentation. The date and time entries are separated by the decimalpoint. Choose with F1 FORMAT. Close with . Leave with F6 MENU.

F2 LANG Your instrument is programmed according section 2.14 so that 2languages and 2 keyboard drivers of your choice are available. Possiblelanguages: English, German, French and Spanish. When you change tothe other language a power up is required to activate the language.

F3 UNIT With this you select the temperature unit Kelvin or °F instead of °C. Thepressure units (important for boiling point determinations) are kPa or psi.

F4 OPTIONS FP81 detection limits: Melting point, default value B = 20% transmittanceabove initial value, see Fig. 3-4. Start of the melting range, default value A= 1.2% above initial value. End of the melting range, default value of slopeC = 0.4%/s. Boiling point, default values D = 0.6 and E = 0.85 Hz. Cloudpoint, default value F = 4% below initial value, see Fig. 3.16

FP84/85 detection limit for the start of melting or boiling range corre-sponds to an absolute value of the slope of the DTA curve, expressed inanalog digital converter steps per second. As DTA melting or boilingcurves expressed in this unit become steeper with increasing heating rate,ß, the value G is multiplied by ß.

♣ Default values are G = 10 (FP84) and G = 3 (FP85). The default val-ues shown in bold print can be modified if needed with samples of spe-cial properties.

FP81 only: Melting point or range following pharmacopoeia or thermo-dynamically. Default is thermodynamically (see chap. 3.3.1)

FP84 and 85 only: Lag time constant, FP84: 15 s, FP85 22 s

FP84 and 85 only: Curve ICTA: Yes = DTA curve: exothermic represen-tation upward following the International Confederation for Thermal Analy-sis (default). No = exothermic to the bottom.

F5 LCD Use this to optimize the contrast of the liquid crystal display and to switchoff the illumination.



2.7 Performing a Measurement

If you do not wish to continue working with the last method still in the working memory, youmust load the desired method into this memory. You have the following possibilities:

Method selection

Numeric: Press F6 MENU so that the main menu appears:

T PROG SPEZIALAUSGABEMODUS METHODE

Fig. 2-6 The main menu

Enter desired method number. It shows up in reverse video in the field of the method num-ber. Close with .

From the method list: via F4 METHOD and F3 LIST using t, display the desired methodin reverse video and press F4 VIEW, F1 LOAD.

VIEW PRINT

FP81 Melting Point

01 FP81 QC of Rolfie's drug

05-FP81 Test of excipient R2-11

06 FP85 Polyethylene from aged sample

23 FP81 Boiling point of toluene

08:45:01

Fig. 2-7 Selecting the desired method from the list of methods. The hyphen between the method num-ber and the cell name indicates a locked method (see chapter 2.12).

Manual method

You have to redefine the operating mode (F1 MODE) and the temperature program(F2 T PROG).

♣ With F2 GO TO you immediately change the set value of the furnace temperature tothe start temperature of the current method.

To start a method, press the key or F1 RUN respectively.



Sample identification

The sample identification (numeric or if PC keyboard attached keyed in as text or acquiredautomatically with a bar code reader attached to the PC keyboard) appears later in themeasurement report.

RUN

FP81 Melting pointProbe X:

Samples inserted? Press RUN to start

––––––––––––––––––––––––––––812-1.08.1991-612:17:40

GO TO CANCEL

Fig. 2-8 Numeric sample identification without external keyboard (max. 88 characters per sample).

RUN

FP81 Melting pointProbe Y:specimen 6, red CP, T.McKarns, dated 9.

Samples inserted? Press RUN to start

Quality Check ISO9000 of compressed

GO TO

12:18:40

–––––-----

CANCEL

Fig. 2-9 Alphanumeric sample identification using external keyboard (max. 88 characters per sample).The sample designation is either keyed in or read in from the sample label using a bar codereader.

Starting the measurement

After answering the questions pertinent to the relevant method and attached cell, place thesample(s) in the measuring cell and press F1 RUN. The method now runs fully automati-cally.

To skip the waiting press F4 GO! (not active with locked methods).

Examples of displays during an FP81 measurement are shown in the next section.



2.8 The Display During a Measurement

You have different displays available::

1. Bar graph of the measuring signal: F3 DISPLAY, F1 BAR

HOLD

123.3T PROG FAST RESETDISPLAY


14

C100%

0

X100%

0

Y100%

0

Z o

Fig. 2-10 „BAR“: The light transmittance of the sample corresponds to the height of the bars. During themeasurement, the above menu appears (= measurement menu).

2. Numeric representation of the results (FP81 and 83) or the measurement signal (e.g.FP85): F3 DISPLAY, F2 NUM

NUM

123.7CURVE Y CURVE ZCURVE X


14

CX Y Z o

121.3

119.4 120.6 119.9

BAR

Fig. 2-11 „NUM“: As soon as results are available, they are displayed. The shown menu appears afterF3 DISPLAY has been pressed in the measurement menu.

3. Measured curve(s): F3 DISPLAY, F3 CURVE X. F4 CURVE Y (FP81 and 84 only) orF5 CURVE Z (FP81 only).

HOLD

124.6T PROG FAST RESETDISPLAY


C

100%

0%

ZP

o

14 *

Fig. 2-12 „CURVE Z“: Graphical display of the transmittance of sample Z. The lower case letter p on theleft of °C means that the type of result selected is „pharmacopoeia“. The asterisk, *, on theright of the method number (14) indicates that the saved method 14 has been modified afterloading.



Meaning of the status symbols

Control start temperature

Start temperature reached

Waiting before measurement

Dynamic phase (heating)

Dynamic phase (cooling)

Fast heating

Fast cooling

Isothermal phase

Pause activated by HOLD

End temperature reached

Fig. 2-13 The status symbols and their meaning. These symbols are shown in the display above thetemperature unit (see also 2.5 The temperature program, Fig. 2.5).

2.9 Interactions During a Measurement

You also have various action possibilities during ongoing measurements::

• Break the measurement with F5 RESET.

• Modify the temperature program: You will often find that the pre-selected end tem-perature is insufficiently high: Press F1 T PROG, F4 t, key in the new end temperatureand confirm with F6 MENU (not !).

• The heating rate and other parameters are modified in an analogous manner, but - forobvious reasons - not the start temperature.

• Hold the temperature program: Press F2 HOLD. The designation of the keypadchanges to F2 CONTINU. Holding the temperature program can influence the results asit takes some time until the furnace and the sample(s) are again heated uniformly. In ad-dition, a heat-sensitive sample could start to decompose if the temperature is held forsome time.

• Accelerate the measurement: With F4 FAST you can accelerate the measurement bya factor of 10. The heating rate thus rises ten fold with a maximum of 20 °C/min. In anisothermal measurement phase, the measurement time remaining expires ten timesfaster. During the accelerated measurement, the inscription of function key changes toF4 NORMAL.

♣ With locked methods, these interactions are locked as well in order to obtain best re-sults. The only exception is F5 RESET.



2.10 Evaluations, Results

The FP81 and FP83 measuring cells always lead to numeric results – provided that the de-tection limits have been exceeded. With the DTA/DSC (FP84 and FP85) measuringcells, you can activate the operating mode melting or boiling range to get numeric resultstoo.

In isolated cases, no or non significant results can be obtained with the default detectionlimits. As a help, adapt the detection limits to the sample in question under F5 SPECIAL,F2 CONFIG and F4 OPTIONS and perform new measurements. If you are satisfied withthe new detection criteria, store a new method.

2.10.1 Statistics of the Measurement Results

The melting and cloud point determinations each result in a mean value (with at least 2sample capillary tubes) and the standard deviation (only with 3 sample capillaries) of thismeasurement.

In addition, the calculation of mean value and standard deviation of numeric results (meltingpoint, cloud point or dropping point) is performed of any number of measurements with thesame method (saved methods only).

• Initialize statistical calculation

With F5 SPECIAL, F4 STATIST, F1 INIT you can clear the statistics memory and initial-ize the collection of data in the nonvolatile memory. When you start a new method, thestatistics memory is automatically initialized.

♣ In locked operation of the FP90, clearing of the statistics memory is not accessible.

• Display statistics

Press F5 SPECIAL, F4 STATIST and the number of results, the mean value and thestandard deviation appear in the display.

• Print statistics

F5 SPECIAL, F4 STATIST, F2 PRINT produce a report on the printer comprising theheader followed by the method name, the mean value and the standard deviation.

♣ As soon as you change a method or apply an other one, the statistics are initialized.



2.11 Result Output on a Dot Matrix Printer

♣ If no dot matrix printer is available, the numeric results and if required the statistics areshown on the display. The GA44/GA42 printers are not supported.

Installing the dot matrix printer, see chap. 2.14: Startup procedure

The analysis report starts with the

Header With F5 SPECIAL, F5 PRINT, F1 HEADER you can enter a header ofmaximum 36 characters on the PC keyboard, which appears at the top ofthe analysis reports irrespective of the method.

Example: „Dr LeChatelier’s Laboratory“.

You select the other components of the report individually under F3 OUTPUT. These thusbecome part of the method:

Curve: Graphical representation of the measuring signal (dynamic or isothermalportion).

FP81: Melting and cloud point measurements, either channel x, y or z, orwith "X ONLY" just the signal x.

FP82/84: Transmittance curves. FP84: in addition DTA. FP85: DTA.

Transmittance curves are always shown from 0 to 120% transmittance.DTA curves are automatically scaled. However, manual scaling is possibleF5 SPECIAL, F5 PRINT, F2 SCALE.

Calibration Temperature calibration data (A and B).

Configuration Table of the configuration data entered under F5 SPECIAL, F2 CONFIG.

Method List of the method comprising operating mode and temperature program,see also 2.12 The method concept.

Results Such as melting points or event temperatures (FP82/84).

Statistics Mean value and standard deviation of the results to date with the methodin question.

Automatic printout of the report at the end of a measurement, irrespective of the method,is initiated with F5 SPECIAL, F5 PRINT, F3 AUTO. Default setting is "AUTO".

Manual printout of reports: F5 SPECIAL, F5 PRINT, F4 MANUAL suppresses the auto-matic output. Additional reports of the last measurement are obtained by F5 SPECIAL, F5PRINT, F5 PRINT.



2.12 The Method Concept

The method comprises all instructions needed to perform a measurement, the evaluationand the result representation.

For routine use such methods previously saved (preferably in the locked mode) are loaded.

New samples with unknown behavior e.g. in R+D, require manual entry of the most impor-tant parameters („manual method“). A manual method can be used without saving.

♣ The instrument is delivered with stored basic methods for each measuring cell (number81 through 85) and some temperature check methods number 90 to 99. The basicmethods can be modified and saved under another number

The components of a method

A method comprises the following parts:

• Number of the method: The two-digit method number is used to call up the methodfrom the nonvolatile memory

• Title of the method: Comprises maximum 28 characters (without, external keyboardnumeric title only).

• Measuring cell: For which the method has been developed.

• Operating mode, MODE of the attached measuring cell such as melting range or cloudpoint with FP81.

• Temperature program T PROG: With the parameters: start temp, rate, end temp, timeiso, waiting, stop after event, afterwards? and link method (see 2.5 The temperatureprogram)

• Detection limits with FP81 melting point or range only, result calculation either thermo-dynamically (default) or „pharmacopoeia“.

• Result representation, OUTPUT: See 2.11 Result output on dot matrix printer.

♣ As soon as you call up a locked method, the FP90 is blocked against modifications.You can only perform unchanged methods (routine). Advanced users can release thelock via key sequence F1, F2, F3 from the main menu.



The Method Menu

FP81 Melting point 08:20:41

Start temp. : 120.0 °CRate : 1.0 °C/minEnd temp. : 180.0 °C Method: 11 *

SAVE DELETELIST PRINT

25.3 C

Choose method; press

o

Fig. 2-14 The key F4 METHOD displays the method menu. The asterisk on the right of the method num-ber indicates that the saved method 11 has been modified.

Saving a method

You develop and tested all components of a new method, based on an already existingmethod. To have the method available for the future press F4 METHOD, F2 SAVE. Enter amethod number, if a PC keyboard is attached you can enter a method title with maximum28 characters.

To save the method in the non volatile memory press F4 SAVE. To protect a (routine)method from alterations by the operator you save it locked by the key sequenceF1 (empty), F4 SAVE. The method remains unlocked in the working memory. To get thelocked status load the locked method by . Unlock is activated by the key sequence F1,F2, F3 from the main menu.

♣ There is storage space for approx. 50 methods in the FP90. The numbers 1 to 79 arefree.

SAVE

FP81 Melting Range

Method nr.: 13

Title : --------------------------

09:26:30

Enter title and press SAVE

Fig. 2-15 Saving a method (F4 METHOD, F2 SAVE)

Loading a method from the nonvolatile memory into the working memory:

Either enter the two-digit method number from the main menu (close entry by ) orpress F3 LIST and select the desired method with F3 t , F4 VIEW and F1 LOAD.

VIEW PRINT

FP81 Melting point 08:13:37

01 FP81 Additive CiGy

05 FP81 Check Adjuvant R2-11

81 FP81 Mettler Melting Point90 FP81 Temp Check Benzoic Acid

Fig. 2-16 Method listing (F4 METHOD, F3 LIST) The hyphen after the method number indicates a lockedmethod.



Display method listing

Press F4 METHOD and F3 LIST to obtain a listing arranged by method number. F4METHOD, F4 PRINT prints the listing. The method shown in reverse video is ready forviewing of its parameters (F4 VIEW) and to load into the working memory (F1 LOAD).

View method

By means of F4 VIEW you can examine all instructions of the method shown in reversevideo in the method listing without overwriting the current method in the working memory.F4 PRINT prints the parameters of the method in question.

Delete method

If you no longer need a method, look through it again carefully before deleting it (F4 VIEW).F5 DELETE erases the displayed method after a confirmatory question.

♣ Deleting a method no longer used doesn’t increase the memory capacity for new meth-ods immediately. This requires restoring your methods as explained in section 2.14 un-der Languages and PC Keyboards.

2.13 The Calibrations

Light transmittance: Each time you switch on the control unit, an automatic calibration ofthe light transmittance follows when the FP81, FP82 or 84 is connected. You can skip itand initiate a manual calibration when your 100% specimen is ready (F5 SPECIAL,F3 CALIB, F1 SIGNAL).

Temperature: All measuring cells are calibrated in the factory. Despite this, it is advisableto check the temperature accuracy regularly in the temperature range important for you.Should you discover deviations, perform a calibration. You will find further details in thesection dealing with the appropriate measuring cell.

♣ Such a new temperature calibration is stored in the FP90. It only is valid for the appliedmeasuring cell.



2.14 Startup Procedure

FP90

The FP900 should not be exposed to large temperature fluctuations and sunlight must beavoided. It should stand on a sturdy bench. The FP900 operates trouble-free at room tem-perature (+10 ... +31°C) up to a relative humidity of 80%.

Power fuse, power line voltage

The FP90 operates with alternating voltages (50 or 60 Hz) of 100, 120, 230 or 240 V.

♣ In countries with 220 V, the 230 V range is used.

The fuse holder also serves as a voltage selector. Check that the voltage set on the fuseholder (next to the power socket on the rear instrument panel, see Fig. 2-1) matches theactual power line voltage. If not, open the fuse holder as follows:

Opening the fuse holder

The FP90 must be disconnected from the power supply before you open thefuse holder!

The FP90 is suitable only for power supplies with a grounding conductor.

Double pole fuse protection: Use only fuses of the same type.− Open the cover of the fuse holder by inserting a screwdriver in the space provided at the

upper edge of the holder and turning it slightly. Pull the cover right back.− Changing the voltage: Remove the drum inscribed with the different voltages and turn

it so that the correct voltage is at the front and then press it back in place.− Replacing a blown fuse: Take out the fuse holder and replace the blown fuse by a

new one: 230 to 240 V: T2L250V , 100 to 120 V: T2H250V and slide in the fuse holderagain.

If you want to operate the FP900 system with a voltage of 100 V using a 100 V /50/60Hz power supply with high impedance, the technical safety requirements can beensured by a T2,5H250V fuse.

− Close the cover of the fuse holder until it snaps in.

Legend for fuse: Example T315L250V

T Characteristic

315 Rated current(numbers x and x,xx = ampere values ; numbers xx and xxx = milli-ampere values

L Interrupting capacity

250V Rated voltage



Changing the Battery

The FP90 is equipped with a battery 1.5 V (Mingnon AM3 / LR6). This battery supports theinternal clock (date and time), as well as the non volatile memory. Use a long life batterywith a large capacity (> 1200 mAh) to reach a life time as long as possible. The data secu-rity depends on the switching off and on of the FP90. When the FP90 is switched on, thedata memory is supported by the power line and the battery is relieved. The life duration ofa battery is longer than a year when having a capacity of 2250 mAh.

Changing the battery without loosing data (Date, time, statistics)− Switch on the FP90.− Free some working space at the left side of the FP90.− Turn over the FP90 to its left side. Now the battery holder is accessible at the bottom of

the FP90.− Open the lid with a coin or a large screwdriver.− Remove the old battery and replace with a new one. Mind the correct placement.− Close the lid and put the FP90 back on its feet.− Dispose your battery correctly as recommended in your country.

Changing the battery with loosing the data (date, time, statistics))

Same as above, but without switching on the FP90. When switching the FP90 on the nexttime, you will have to set date and time as described in chapter 2.6.

Selecting languages and PC keyboards

During manufacturing the FP90 is equipped with the languages English and German. Ac-cordingly the respective keyboard drivers US and GR are available. You select one ofthese by F5 SPECIAL, F2 CONFIG, F2 LANG. It will be available after power up.

To load another language or keyboard driver from the language cassette:− Switch off FP90 and carefully insert 64-pin connector of any measuring cell in the ap-

propriate socket at rear of the control unit ensuring correct alignment.− Remove cover and insert the language cartridge in the appropriate socket at rear of the

control unit (see Fig. 2-1).− Switch on FP90. First of all the user methods (numbers 1 through 79) are copied and

restored without empty areas from deleted methods.

If you switch off the FP90 during restoring, all user methods will be lost!



− Choose the first and a second language by typing the desired numbers and press .The choice is English, German, French and Spanish.

− Select two keyboard drivers (US:USA, GR:GFR, FR: France, SP: Spain, SG: Switzer-land, UK: United Kingdom, IT: Italy, NL: Netherlands)

− Follow the message „Switch off FP90 and remove cartridge“ and keep the cartridge at asafe place. Insert cover to protect the socket.

− after power up select one of the two available languages/keyboard drivers withF5 SPECIAL, F2 CONFIG, F2 LANG.

− Set time and date.

After a power up the new selection will be there.

2.14.1 Attendance and Maintenance

The FP90 needs neither special attendance nor maintenance.

If you don't use the FP900 System:− Switch off the system.− Protect the system with the protection cover from surroundings influences.

Clean keyboard and housing

Switch off the instrument and disconnect the power cable before you clean thekeyboard or the housing.

− Moisten a soft cloth with water and a mild detergent.− Clean the keyboard and the housing with the soft humid cloth. No humidity must enter

the instrument.

♣ The maintenance of the modules is described in the corresponding chapters to themodule.



2.15 PC Keyboard and Bar Code Reader

As a PC keyboard without socket for the bar code reader, the Cherry modelG80-1000HAU *) (US keyboard QWERTY) 1) has proved reliable.

However, most PC-AT keyboards with the 5-pin DIN connector should also function. A trialwill pay dividends! You install the according keyboard driver with F5 SPECIAL,F2 CONFIG, F2 LANG.

As a PC keyboard with socket for the bar code reader, the Cherry model G81-1600* hasproved reliable. 1).

Pin assignment: Pin 1 CLOCK, pin 2 DATA, pin 3 unassigned, pin 4 GND, pin 5 +5V..

As bar code readers, Cherry recommends the bar code readers: 630-0238 (high resolu-tion), -0207 (medium resolution), -0235 (low resolution). The required resolution dependson the size of your bar codes.− Connect the keyboard cable to the appropriate 5-pin socket below the keypad of the

FP90. To do this, raise the FP90 at the left (do not tilt backward, you could damage the64-pin connector). The bar code reader is attached to the PC keyboard (socket at rightrear).

If need be a header can be programmed in the Cherry keyboard. This header then be-comes part of the sample identification. To program a header press the keys Prog, F1 andControl-h. Enter a suitable word of maximum 12 characters and press Prog again (the LEDswitches off).

1) Address: Cherry Mikroschalter GmbH Industriestr. 19, Postfach 1220 W-8572 Auerbach (BRD). Cherry isrepresented in Switzerland by the company Eurodis Ineltro AG, Bahnstrasse 58/60, 8105 Regensdorf.



2.16 Dot Matrix Printer

The optional printer generates reports and diagrams.

As a printer, the Epson model with the Epson #8148 Intelligent Serial Interface has provedreliable. However, most 100%-Epson compatible printers with RS232C port should alsofunction.

Activate the serial interface and its buffer.

Baud rate 9600

Word length 8 bit

Parity check disable

Parity odd

X-on/X-off Protocol no

Follow the instructions of the interface. The DIP switches of the Epson 8148 Intelligent Se-rial Interface are set as follows :

DIP switch1 No. 1 through 8 : 00000100 *)

DIP switch2 No. 1 through 6 : 110000*)

Activate the US character set and 10 inch form length (follow the instructions of the printer).The DIP switches of the Epson are set as follows :

DIP switch1 No. 1 through 8 : 0xxxx111*)

DIP switch2 No. 1 through 4 : 1xxx*)

*) 1 = on, 0 = off, x = to your liking

The ordinates of the diagrams are properly labeled using the standard character width(12 characters per inch not condensed) only.− Engage the enclosed adapter into the printer port at rear of the FP90. Connect the serial

port of the printer with adapter by the cable ME-17854.



2.17 Accessories

Standard Accessories FP90 Order No.

• Operating Instructions− German 707 762− English 704 763− French 707 764

• Microfuses (set of three)− Power supply 100/120 V− Power supply 230/240 V:

51 018 96113 873

• Power cable− neutral 87 576− Germany 87 925− USA 88 668− Switzerland 87 920

• Tweezers 70 661

• Phillips screwdriver No. 1 73 071

• Assembly gauge for FP81, 83, 85 18 858

• Dust cover FP90 18 867

• Language cartridge FP90*− English/German/French/Spanish− English/German/French/Dutch− English/German/French/Italian

650023650024650025

• Printer cable 25 pin m/25 pin f 17 854

• Adapter, 25 pin m/25 pin m 89 780

• Calibration standard: benzoic acid 18 555

• Calibration standard: benzophenone 18 870

• Calibration standard: caffeine 18 872

Optional accessories to the FP90 Order No.

• Connection cable for the RS232C Interface− 9- pin connector (FP99AT) 17 853− 25-pin connector (FP99PS) 17 854

*Three types of language cartridge are available. The languages English, German and French are included ineach language cartridge. The fourth language differs according to the selected cartridge (Spanish, Italian orDutch)



2.18 Technical DataFP90 Central Processor

Temperature range –100…600 °CThe temperature range is given by the attachedcell.

Temperature sensor Pt100Heating rate: ± 0,0…20,0 °C/minDisplay graphic LC - display; 6 lines, 36 characters per

line; 64 x 256 pixels; menu- and command linesEntries numerical with floating point, function keysTemperature display resolution 0,1 °C or KLanguages English, French, Spanish and German,

2 of them are chosenKey pad Splash proofMeasuring cells Optionally: FP81, 82, 83, 84, 85Influence of the ambient temperature depending on measuring cell

Temperature coefficient = 0.1 °C error with achange in ambient temperature of 10 °C

Power supply Adjustable 100/115/230/240 VoltAdmissible voltage fluctuations

for 100/120Vfor 230/240V

± 10 %+ 6 %, -15%

Frequency 50/60 HzPower consumption: max. 210 VAHousing PU foam, metalDimensions width x depth x height = 305 x 485 x 155Weight 11,5 kg• Surroundings

− Admissible location − indoors only− not higher than 2000 m above sea level

− Ambient temperature during op-eration

10...31 °C

− Relative humidity 20...80%− Degree of soiling 2− Over voltage category II

• Standard− Electric Safety EN61010-1− Electromagnetic compatibility En55022/EN50082-2− Mark of Safety S+, CSA− Mark of Conformity CE



2.19 Error messages and Warnings

Error Messages

1No cell connected

Switch off FP90 and connect any measuring cell. Ifmessage still appears, check the pins of the connector.They may not be broken nor bent. If possible dress abent pin straight with small pliers. Engage connectorand switch on FP90. If still negative, try another cell oc-casionally. If negative call the service.

3 to 7 Switch off FP90 and check the pins of the cell connec-tor. They may not be broken nor bent. If possible dressa bent pin straight with small pliers. Engage connectorand switch on FP90. If Still negative, try another cell oc-casionally. If negative call the service.

8Front panel key stuck

Switch off FP90. Check all keys of front panel with re-spect to their pressure point. If there is one without apressure point, disconnect cell and power cable, tilt theFP90 on the rear panel and loosen the 6 screws that fixthe front panel by approx. 1 mm. Now push and pullslightly at the loose sheet metal and check the faulty keyagain. When O.K., fix the screws otherwise call theservice.

9Handset key stuck

(FP82/84 only) Check pressure points of the 4 keys. Ifone is bad send handset to service. Check anotherhandset occasionally.

10 to 13 Switch off FP90 and check the pins of the connector.They may not be broken nor bent. If possible dress abent pin straight with small pliers. Engage connectorand switch on FP90. If still negative, try another cell oc-casionally. If negative call the service

14 and 15 When using the language cassette only. Try again, Ifnegative call the service.



16String tables different size

(when using the language cassette only). Languagecassette damaged.

19 Switch off FP90 and check the pins of the connector.They may not be broken nor bent. If possible dress abent pin straight with small pliers. Engage connectorand switch on FP90. If still negative, try another cell oc-casionally. If negative call the service.

20 to 24 Switch FP90 off and on again. If negative check anothercell occasionally or call the service.

Warnings

Check configuration The battery is weak. Please set clock, language, unit,LCD contrast and – with FP84/85 – lag time constantand curve ICTA (Sect. 2.6 Operating Instructions). Re-place the battery

For an FP90 delivered before September 1993: Tocharge the built-in battery completely don't switch offthe FP90 for at least three days. To save energy duringcharging, switch the FP90 off and on again. Thiscauses the temperature to be controlled "idle" (noheater power consumption).

Calibration memory full After approx. 18 temperature calibrations the memoryis full and your current calibration has not been saved.Clear up the memory with the language cassette(sect. 2.14 Selecting languages and PC-keyboards,OI). Afterwards key in the last calibration temperaturesagain. The calibrations of the other modules are still inthe memory of course.

No temperature calibration The calibrations and the user methods have been lostdue to power failure during selecting languages andPC-keyboards. Please call the service for a new factorycalibration. For urgent analyses perform a normal tem-perature calibration. After the factory calibration hasbeen done press F5 SPECIAL, F3 CONFIG,F3 CALIB, F1 METTLER to cancel the intermediatecalibration.



Furnace temperature

out of control

This message is displayed in connection with thewarnings „No cell heating / No cell cooling“ (see chap.2.4.1; Measurements at strong electric or magneticnoise fields)

No cell heating Furnace heating insufficient to follow the temperatureprogram. Check the pins of the cell connector. Theymay not be broken nor bent. If possible dress a bent pinstraight with small pliers. Engage connector and switchon FP90. If still negative, try another cell occasionally. Ifnegative call the service.

No cell cooling Furnace cooling insufficient to follow the temperatureprogram. This message is caused by a too high coolingrate, too high ambient temperature or a malfunction ofthe fan.

Fan FP82/84: remove housing to check whether itworks.

Fan FP81/83/85: The built-in fan creates a typical noisewhen properly working.

♣ The fan of these cells only operates on demand ofthe temperature controller

Ext. keyboard key stuck Check pressure points of the keys. If one is bad sendkeyboard to the appropriate service. Check anotherkeyboard occasionally.

Ext. keyboard selftest failed Keyboard damaged or incompatible. If there is a switchPC(XT) <> AT set it to AT. Check another keyboardoccasionally.

(No display or lines only) and 2 or3 beeps followed by a continuoussound

Switch FP90 off and on again. If negative call the serv-ice.

(Temperature displaybelow –200 °C)

Indicates a short circuit or bad contact of the Pt100temperature sensor. Switch off FP90 and check thepins of the cell connector. They may not be broken norbent. If possible dress a bent pin straight with small pli-ers. Engage connector and switch on FP90. If stillnegative, try another cell occasionally. If negative callthe service.

No display and continuous beep Check the power line voltage and the voltage selector

2 fp90 central processor of the fp900 systembikeitech.com/datas/es_free2/f_496e83e8b1a4f.pdf · 2...

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