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Operation

pHotoFlex / pHotoFlex Turb

46

ba75491e05

04/2009

4.5.6

Zero adjustment

The zero adjustment, i. e. measuring and storing the absorbance of a 
cell filled with water, is necessary after the meter is switched on. 

Additionally, we recommend to carry out a zero adjustment if the ambi-
ent temperature has changed.

Only perform the zero adjustment against distilled water in an optically 
perfect cell. The zero adjustment must be performed separately for 
each cell type. 

5

Clean the cell (see section 5.2.2).

6

Insert the cell (see section 4.2).

7

Start the measurement with <START/ENTER>. 

The measurement result is displayed when the measurement 
is finished.

1

Press the <M> key (long pressure) repeatedly until the Pho-
tometry measuring mode is selected.

2

Press the <M> key (short pressure) repeatedly until the mea-
sured variable, Concentration is selected.

3

Press the <CAL/ZERO> key. 

The menu for adjustment measurements opens up.

Photometry \ Absorbance

i

 Insert sample

i

 Start measurement

     with <START>

16 mm

610 nm

01.02.05 15:12

Photometry \ Absorbance

0.532

16 mm

610 nm

01.02.05 15:12

Содержание pHotoFlex

Страница 1: ...ba75491e05 04 2009 pHotoFlex pHotoFlex Turb Operating manual Handheld photometer...

Страница 2: ...lysis specifications Operating manual Part of the process of consequently improving our products is the continuous further development of the range of photometric tests supplied and the meter firmware...

Страница 3: ...rting a cell 24 4 3 General operating principles 27 4 3 1 Operating modes 27 4 3 2 Navigation 27 4 3 3 Navigation example 1 Setting the language 29 4 3 4 Navigation example 2 Setting the date and time...

Страница 4: ...rement datsets to the RS232 interface 72 4 8 5 Erasing stored measurement datasets 73 4 9 Transmitting data RS 232 interface 73 4 9 1 Connecting a PC external printer 73 4 9 2 Configuring the RS232 in...

Страница 5: ...93 7 1 General data 93 7 1 1 pHotoFlex Turb 93 7 1 2 LabStation 95 7 2 Photometry 95 7 3 pH value ORP voltage 96 7 4 Turbidity 96 8 Accessories options 97 8 1 WTW accessories 97 8 1 1 Connection cable...

Страница 6: ...Contents pHotoFlex pHotoFlex Turb 6 ba75491e05 04 2009...

Страница 7: ...asurements Transmission measurements z pH measurements z Turbidity measurements pHotoFlex Turb The pHotoFlex Turb handheld meter provides the maximum degree of operating comfort reliability and measur...

Страница 8: ...talog or via the Internet 1 2 Keypad Key functions Select the measuring mode M long keystroke Photometry Turbidity pH ORP Select the measured parameter within a measur ing mode M short keystroke pH OR...

Страница 9: ...es start measurement START ENTER Call up the Configuration menu all settings are made here MENU In the Photometry measuring mode measured parameter Concentration switch over between available citation...

Страница 10: ...4 Socket field Identifying the connectors Measuring mode measured parameter Measured value with unit Program and citation form Diameter of the cell and measuring range Status line with date and time...

Страница 11: ...h photometric measurements the zero measurement is retained even after switching the pHotoFlex Turb off and on again z You can connect a barcode reader for the simplified calling up of programs z The...

Страница 12: ...Overview pHotoFlex pHotoFlex Turb 12 ba75491e05 04 2009...

Страница 13: ...hen handling the chemicals of photometric test sets The personnel responsible for the commissioning operation and main tenance must have the necessary qualifications for this work If the per sonnel do...

Страница 14: ...uring instruments see chapter 7 TECHNICAL DATA It left the factory in a safe and secure technical condition Opening the photometer or adjustment maintenance and repair work must only be performed by s...

Страница 15: ...is no longer possible the instrument must be taken out of service and secured against inadvertent operation Safe operation is no longer possible if the meter z has been damaged in transport z has been...

Страница 16: ...Safety pHotoFlex pHotoFlex Turb 16 ba75491e05 04 2009...

Страница 17: ...y analysis manual with analysis specifications software to program user defined methods Note The optional parts of the scope of delivery are available as accessories see section 8 1 3 2 Power supply Y...

Страница 18: ...tteries or accumulator pack the meter automat ically switches off the display illumination if no key is pressed for 30 seconds The illumination is switched on with the next keystroke again The display...

Страница 19: ...r can be connected A barcode reader enables to select program numbers in a simplified manner Recommended barcode readers can be found in section 8 2 For the interface of your meter set the same baud r...

Страница 20: ...b 20 ba75491e05 04 2009 4 Connect the power pack to an easily accessible power socket 5 Place the pHotoFlex Turb in the LabStation 6 Connect a pH electrode to the socket on the pHotoFlex Turb through...

Страница 21: ...r pack see section 3 2 operation with LabStation connect the LabStation and place the pHotoFlex Turb in the LabStation see section 3 3 z Switch on the meter see section 4 1 z Set the language as neces...

Страница 22: ...Commissioning pHotoFlex pHotoFlex Turb 22 ba75491e05 04 2009...

Страница 23: ...M long pressure change the measuring mode With M short pressure toggle between the different measured pa rameters in the selected measuring mode Switching off Press the ON OFF key Automatic switchoff...

Страница 24: ...switched on again with the next key stroke 4 2 Inserting a cell To be able to insert cells in the pHotoFlex Turb the cell shaft has to be prepared to take in a cell Inserting a 28 mm cell 1 Push the d...

Страница 25: ...ba75491e05 04 2009 Inserting a 16 mm cell 1 Put the fold out cell shaft 2 in an upright position until it locks into place 2 Pull up the height adapter 3 The cell shaft is extended 3 Open the external...

Страница 26: ...the cell must always be covered by the external light cover Otherwise external light can falsify the mea surement result 4 Insert the 16 mm cell marking points forward so that it is po sitioned on the...

Страница 27: ...ng operating modes z Measurement The display indicates measurement data in the measured value dis play z Calibration The display indicates a calibration process with calibration informa tion or a proc...

Страница 28: ...on the right hand side With START ENTER the selection of the possible settings is opened Subsequently the setting can be changed with and START ENTER Example z Functions Functions are designated by t...

Страница 29: ...ountry how to set the language On delivery English is set as the language in the pHotoFlex Turb During initial commissioning the language is set in the menu Configuration System Language 1 In the meas...

Страница 30: ...functions and displays z Current date and time z Calibration date z Identification of stored measured values Therefore check the time at regular intervals 4 Select the Language menu with The current...

Страница 31: ...ith ESC After canceling with ESC it is possible to enter all digits once again The new digits are only taken over by confirming with START EN TER 1 In the measured value display Open the Configuration...

Страница 32: ...set 6 Set the current Date as necessary The setting is made similar ly to that of the time 7 Change the date format as necessary 8 To make further settings switch to the next higher menu level with E...

Страница 33: ...ameter Concentration Transmission Absorbance Programs Dilution Analysis timer On Off Reset Turbidity i No settings required pH ORP Measured parameter pH ORP Calibration Calibration re cord Cal type TE...

Страница 34: ...PROG Date Delete i 4 of 1000 occupied i Filter No filter Display Illumination Auto off On Off Contrast 0 100 Brightness 0 100 Reset Interface Baud rate 1200 2400 4800 9600 19200 Output format ASCII C...

Страница 35: ...und Beep Settings functions The settings can be found in the Configuration System menu To switch to the Configuration menu press the MENU key Menu item Setting Description Language Deutsch English Fra...

Страница 36: ...tsets Data filter z Erase all stored measurement datsets Delete z Information on the number of occupied memory locations The settings can be found in the Configuration System Measured val ue memory me...

Страница 37: ...terface with PRT z Quit the display with ESC RS232 download Downloads to the interface all measurement datasets that correspond to the filter settings The download is ordered according to the date and...

Страница 38: ...put format Output format The settings can be found in the Configuration System Interface menu To switch to the Configuration menu press the MENU key Settings Menu item Setting Description Illumination...

Страница 39: ...date Date z Format of the date display Date format The settings can be found in the Configuration System Continue Date time menu To switch to the Configuration menu press the MENU key Settings Menu i...

Страница 40: ...water it can however also include chemical conversions e g a di gestion The chemicals required in the analysis specification are available as test sets Note Suitable analysis specifications for test s...

Страница 41: ...hotometry menu To switch to the Configuration menu press the MENU key Settings 1 Clean the cells before filling them with sample and also before measuring as necessary see section 5 2 2 The cells must...

Страница 42: ...er is selected that requires a measured blank value the menu automatically guides to the blank value measurement 1 Press the M key long pressure repeatedly until the Pho tometry measuring mode is sele...

Страница 43: ...at has just been called up It remains stored until it is erased menu item Delete blank value or overwritten The Reset function erases all blank values measured by the user and restores the blank value...

Страница 44: ...G as necessary 4 Open the adjustment menu with CAL ZERO 5 Using and START ENTER select and start the Measure blank value function The menu guided blank value measurement starts Follow the instructions...

Страница 45: ...ter is ready to measure or Discard the result with ESC Subsequently carry out a new blank value measurement 1 Press the M key long pressure repeatedly until the Pho tometry measuring mode is selected...

Страница 46: ...rmed separately for each cell type 5 Clean the cell see section 5 2 2 6 Insert the cell see section 4 2 7 Start the measurement with START ENTER The measurement result is displayed when the measuremen...

Страница 47: ...he cell see section 4 2 6 Set another cell with and START ENTER as nec essary 7 Start the measurement of the zero adjustment with START ENTER After measuring the result of the zero adjustment is displ...

Страница 48: ...WTW com on the Internet you can always find the latest software version with the newest programs and method data for your pHotoFlex Turb see APPENDIX 1 FIRMWARE UPDATE User defined programs User defi...

Страница 49: ...n acoustic signal sounds when the adjusted time interval has expired The Analysis timer function is switched on or off in the Configuration Photometry Analysis timer menu This setting generally applie...

Страница 50: ...selected program The dilution factor is erased if z the photometer is switched off z a different program number is selected z the factor 0 is entered in the Dilution menu If a dilution factor is activ...

Страница 51: ...of the temperature The meter recognizes whether a suitable electrode is connected and automatically switches on the temperature measurement The display of the temperature indicates the active tempera...

Страница 52: ...s The display of the measured pa rameter flashes until a stable measured value is available Criteria With identical measurement conditions the following applies 1 Perform the preparatory activities ac...

Страница 53: ...nt conditions the following applies 4 6 4 Settings for pH and ORP measurements Overview For pH and ORP measurements the following settings are available in the Configuration pH ORP menu z Measured par...

Страница 54: ...n For details see section 4 6 5 Calibration Calibration interval 1 999 d Calibration interval for the pH electrode in days The meter reminds you to calibrate regularly by the flashing sensor symbol in...

Страница 55: ...the sensor symbol flashes after the calibration interval has expired after voltage interruption e g empty batteries empty accumulator pack Buffer sets for calibration You can use the buffer sets quote...

Страница 56: ...Then you can decide whether you want to take over these values of the new calibration or whether you want to continue measuring with the old calibration data After accepting the new calibration value...

Страница 57: ...16 13 pHotoFlex Ser no 12345678 Calibration pH ORP Calibration date 31 10 03 16 13 33 Calibration interval 7 d AutoCal TEC Buffer 1 4 01 Buffer 2 7 00 Buffer 3 10 01 Voltage 1 184 0 mV 24 0 C Voltage...

Страница 58: ...splayed Apart from that the procedure is identical Note The TEC calibration for pH 10 01 is optimized for the WTW technical buffer solution TEP 10 Trace or TPL 10 Trace Other buffer solutions can lead...

Страница 59: ...n display for the next buffer appears 7 For single point calibration select Exit with one point calibra tion with and confirm with START ENTER The calibration is completed as a single point calibratio...

Страница 60: ...on value The calibration display for the next buffer appears 13 For two point calibration select Exit with 2 point calibration with and confirm with START ENTER The calibration is completed as a two p...

Страница 61: ...easured value is checked for stability AutoRead 18 Wait for the end of the AutoRead measurement or Terminate AutoRead with START ENTER and take over the calibration value The new calibration values ar...

Страница 62: ...dix 2 on page 110 4 7 2 Aligning and marking a cell Even completely clean quality cells exhibit tiny directional differences in their light transmittance Therefore if you want to achieve accurate and...

Страница 63: ...ft Always use a cell for measurement The meter only measures precisely if the cell is closed with the black light protection cap WTW cells Note The outside of the cell always has to be clean dry and f...

Страница 64: ...twice more 4 Fill the cell with the sample to be measured approx 15 ml Close the cell with the black light protection cap 5 Clean the cell see section 5 2 2 6 Insert the cell see section 4 2 7 Align t...

Страница 65: ...pHotoFlex pHotoFlex Turb Operation 65 ba75491e05 04 2009 9 Repeat the steps 2 to 8 for further samples...

Страница 66: ...n standards For the menu guided three point calibration you need the following three calibration standards in the mentioned order Preparing calibration Perform the following preparatory activities whe...

Страница 67: ...p with the marking on the cell shaft Press and time hold the START ENTER key until the measured value is displayed z Unmarked cell see page 62 Press and hold the START ENTER key Slowly and in small st...

Страница 68: ...efore measuring Should a valid calibration not be possible the meter also offers to con tinue measuring with the last valid calibration data 6 Repeat the steps 4 6 with the calibration standards 10 0...

Страница 69: ...t are occupied is dis played in the System Measured value memory menu Measurement dataset A complete dataset consists of z Date time z ID number ID z and the following measurement data depending on th...

Страница 70: ...is full You can erase the entire storage see section 4 8 5 or overwrite the oldest dataset with the next storing procedure A security prompt appears before a dataset is overwritten 1 Press the STO ke...

Страница 71: ...tion menu press the MENU key Data filter Menu item Setting function Description Filter Filter criteria No filter Data filter switched off ID Selection according to ID number PROG Selection according t...

Страница 72: ...splay of stored measurement datasets you have the fol lowing options z Switch directly to the measured value display with M short pres sure z Leave the display and switch to the higher menu with ESC o...

Страница 73: ...is overwritten 4 9 Transmitting data RS 232 interface Via the RS 232 interface you can transmit data to a PC or an external printer 4 9 1 Connecting a PC external printer Connect the interface to the...

Страница 74: ...Inter face Baud rate 4 9 3 Selecting the output format of datasets For downloading data to the interface you can select the output format It is selected in the menu Configuration System Interface Outp...

Страница 75: ...or z Upper lower measuring range limit only with measured value status OFL UFL 9 Unit of 8 z Unit of the measured value or z Designation of dimensionless measured values e g pH 10 Measured value statu...

Страница 76: ...status of 11 VALID INVALID UFL OFL Data Operation description Current measured value z Press PRT z Simultaneously with every manual storage process Stored measured values z Display stored dataset and...

Страница 77: ...tings 4 10 1 Resetting the system settings With the System Reset function all resettable settings are reset z Settings for pH ORP see section 4 10 3 z Settings for Photometry see section 4 10 2 z Syst...

Страница 78: ...ther with the measuring parameters Recalibrate after performing a reset The following settings for pH measurements are reset to the default settings with the Reset function Setting Default settings PR...

Страница 79: ...are update With a software update you obtain the current software with all new pro grams and method data see appendix A software update comprises z new instrument software z new programs methods z rev...

Страница 80: ...method data can be carried out in the LSdata soft ware see operating manual LSdata or with the aid of a terminal pro gram section 4 13 1 You need the following data in any case Data Possible entries e...

Страница 81: ...menu under accessories For more detailed information please refer to the user information of the terminal program Note The CD ROM contains a configuration file for the HyperTerminal pro gram By double...

Страница 82: ...he program stored under the number After successful transmission the terminal program writes If the transmission failed the terminal program writes Erasing user defined programs To erase user defined...

Страница 83: ...successful transmission the terminal program writes If the transmission failed the terminal program writes Read out all user defined programs Read out one user defined program Command line U 510 U 511...

Страница 84: ...Operation pHotoFlex pHotoFlex Turb 84 ba75491e05 04 2009...

Страница 85: ...CAUTION Make sure that the poles of the batteries are the right way round The signs on the batteries must correspond to the signs in the battery compartment 1 Open the battery compartment Unscrew the...

Страница 86: ...see section 8 1 1 Open the battery compartment Unscrew the two screws 1 on the underside of the meter Remove the lid of the battery compartment 2 2 If necessary take four old batteries out of the batt...

Страница 87: ...lls can contain poisonous or corrosive substances If the con tent is released follow the danger warnings on the cell If neces sary take corresponding protective measures protective goggles protective...

Страница 88: ...r from transport damages Batteries accumulator pack Remove the batteries or accumulator pack from the meter see section 5 1 Dispose of the batteries or accumulator pack at a suitable facility ac cordi...

Страница 89: ...ed Insert new batteries Charge the accumulator pack see section 3 2 Cause Remedy Software error Operating condition undefined or EMC load unallowed Processor reset Press the START ENTER and PRT key si...

Страница 90: ...rectly inserted Insert the cell so that it is positioned on the bottom of the cell shaft Cell contaminated Clean the cell Cell shaft contaminated Clean the cell shaft Dilution set incorrectly Set the...

Страница 91: ...orrect solution temperature without temperature sensor Set up correct temperature Incorrect buffer solutions Select buffer solutions suitable for the calibration procedure Buffer solutions too old Use...

Страница 92: ...ctrode pH electrode unsuitable Use suitable electrode Temperature difference between buffer and test sample too high Adjust temperature of buffer or sample solutions Measurement procedure not suitable...

Страница 93: ...5 C Operation 0 C 50 C Climatic class 2 Allowable relative humidity Yearly mean 30 days year other days 75 95 85 Power supply Batteries 4 x 1 5 V type AA Operating time with battery operation approx 5...

Страница 94: ...991 FCC Class A Equipment Statement Note This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed...

Страница 95: ...ce filter 436 nm 517 nm 557 nm 594 nm 610 nm 690 nm Accuracy 2 nm Photometric reproducibility 0 005 or better Photometric resolution 0 001 Warm up time none Measuring time approx 2s Measured parameter...

Страница 96: ...of the test sample pH 0 01 15 C 35 C U mV 1 15 C 35 C T C 0 3 0 C 55 C T F 0 54 0 C 55 C when measuring in a range of 2 pH around a calibration point Measuring principle Nephelometric measurement acco...

Страница 97: ...cuvettes 28 x 60 mm LKS28 Set 251 302 Calibration standard kit for Turb 430 IR pHotoFlex Turb Kal Kit Turb 430 IR 600 560 Thermoprinter a connection cable is required to connect the printer see sectio...

Страница 98: ...e AK 540 S 902 843 z Connection P3001 LabStation Cable AK 3000 250 745 in conjunction with an adapter socket socket GenderChanger Specialist shops or Cable 2 x 9 pin socket plug Specialist shops Descr...

Страница 99: ...ing optional extensions are available in specialist shops Device cable Model Barcode reader In addition to the barcode reader a suitable connection cable is required to operate the barcode reader z Ha...

Страница 100: ...Accessories options pHotoFlex pHotoFlex Turb 100 ba75491e05 04 2009...

Страница 101: ...tation aids Abbreviations The list of abbreviations explains the indicators and the abbreviations that appear on the display and in the manual Specialist terms The glossary briefly explains the meanin...

Страница 102: ...LoBat Batteries almost empty Low battery m Month mV Voltage unit mV pH Unit of the electrode slope internat mV NIST DIN Automatic pH calibration with buffer solutions pre pared according to NIST or D...

Страница 103: ...g the displayed val ue to the correct value or a value that is regarded as correct Often this expression is also used when the measuring system is adjusted at the same time see adjusting Cell Vessel...

Страница 104: ...measurement results How to carry out the method up to measuring with the photometer is described in the analysis specification The pHotoFlex Turb contains a database with methods programs Furthermore...

Страница 105: ...used to calibrate a measuring system Temperature function Name of a mathematical function expressing the temperature behav ior of a test sample a sensor or part of a sensor Test sample Designation of...

Страница 106: ...Lists pHotoFlex pHotoFlex Turb 106 ba75491e05 04 2009...

Страница 107: ...aning 87 Concentration measurement 42 Connecting a PC 73 Connecting a printer 73 Connecting a sensor 10 D Data filter 71 Dataset 69 Date and time 30 Date time 39 Delivery condition measuring parameter...

Страница 108: ...nt calibration pH 59 Slope pH 55 Socket field 10 Storage of measured values storage locations 69 Storing 69 Switching on 23 System menu General 38 general information 41 System settings 35 general 35...

Страница 109: ...The selected interface is displayed on the left side of the status line on the screen bottom Via the language menu you can change the adjusted language Firmware update Proceed as follows After switchi...

Страница 110: ...y Proceed as follows to measure turbidity values under 1 FU NTU Calibration procedure Calibrate z after the calibration interval has expired z with a temperature change Measuring 1 Press the CAL ZERO...

Страница 111: ...Wissenschaftlich Technische Werkst tten GmbH Dr Karl Slevogt Stra e 1 D 82362 Weilheim Germany Tel 49 0 881 183 0 49 0 881 183 100 Fax 49 0 881 183 420 E Mail Info WTW com Internet http www WTW com...

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