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VWR 662-2351, Инструкция по эксплуатации

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- 16 -

VWR Collection 

PH-130

 pH-meter instruction manual

v1.0x

12.  pH MEASUREMENT

Before starting the measurement the meter and the pH electrode have to be
prepared  for  work  (chapters  7  and  8  respectively).  Good  condition  of  the
electrode is crucial for obtaining the correct readings.

12.1.  Measurement with automatic temperature compensation

- turn the meter on by pressing the 

 button;

- connect  the  temperature  probe  and  the  combination  pH  electrode  to  the

F 

and

 t 

connectors respectively (Pic. 2), the   symbol will be displayed;

- immerse  the  electrode  and  the  temperature  probe  in  the  measured

solution. During measurements in vessels don’t touch the bottom and  the
walls with the electrode. It is advisable to use an electrode stand;

- after stabilisation read the result.

Accurate laboratory measurements require using of a magnetic stirrer.

NOTE

: exceeding the measurement range is signalised with red colour of the

displayed  pH  value;  exceeding  the  temperature  compensation  range  –  with
yellow colour.

Содержание 662-2351

Страница 1: ...Instruction manual VWR pH METER PH 130 EU Catalogue Number 662 2351 Version 1 0 Issued 1 December 2020 ...

Страница 2: ...Legal Address of Manufacturer VWR International bv Researchpark Haasrode 2020 Geldenaaksebaan 464 B 3001 Leuven 32 16 385011 www vwr com Country of origin Poland ...

Страница 3: ...12 pH measurement 16 12 1 Measurement with automatic temperature compensation 16 12 2 Measurement with manual temperature compensation 17 III Redox potential and temperature measurement 18 13 Setting the redox potential parameters 19 13 1 Relative measurement 19 13 2 Reference voltage 20 14 Redox potential measurement 20 15 Setting the temperature measurement parameters 21 15 1 Unit 21 15 2 Temper...

Страница 4: ......

Страница 5: ...I INTRODUCTION ...

Страница 6: ...ant and trouble free work with our meter 3 CHARACTERISTICS OF THE METER Two kinds of power source the rechargeable battery and the power adapter enable work in the field and long lasting measurements in laboratory The meter s memory is independent from power supply Waterproof housing enables working in difficult conditions Minimised size and weight facilitate field work The most important features...

Страница 7: ...its are displayed next to the reading Pic 1 The automatic temperature compensation is signalised by the symbol the manual compensation by the symbol next to the temperature reading The exclamation symbol Pic 1 is displayed on the left in the following situations marked with the colours yellow electrode efficiency loss detected during the last calibration or the calibration validity date expired se...

Страница 8: ... case of recording readings the button is locked until the recording process is stopped or finished In the upper wall of the meter connectors are placed with the symbols given below F BNC 50 input for connecting the combination pH or redox electrode t Chinch RCA input to connect the temperature probe P input for connecting the power adapter Pic 2 ...

Страница 9: ...ss the screen in a freely chosen spot of the chosen function Around this spot a frame will be displayed To deselect press the spot again If the chosen function has a possibility of calibration the key becomes active If it has additional parameters the key also becomes active The key is the only key in the meter that responds exclusively to a long press about 2 sec It prevents from accidental erase...

Страница 10: ...ing In case of the user s data loss i e the pH electrode characteristic the following information will appear Pressing the button accepts and records in the memory the standard pH electrode characteristic and enters the measurement screen In such case calibration of the pH electrode is necessary Analogical situation occurs in case of other measuring functions Repeating of the situation after switc...

Страница 11: ...nt screen To choose on the measurement screen press the button the options screen will display with the FUNCTIONS tab open containing the previously set configuration Pic 3A A B Pic 3 Choose the function by pressing the relevant window next to the chosen window the marking symbol will appear Pic 3B Return to the measurement screen by pressing the button ...

Страница 12: ...fter exceeding this range the frame changes its colour to white and the meter displays the current measurement value To choose the stabilised reading signalisation on the measurement screen press the button the options screen will display with the FUNCTIONS tab open containing the previously set configuration Pic 4A A B Pic 4 The window for choosing the stabilised reading signalisation mode is pla...

Страница 13: ... 1 Choosing the kind of the temperature compensation The meter switches itself to the automatic or manual temperature compensation mode Connecting the temperature probe switches the automatic temperature compensation on Next to the reading the symbol is displayed After disconnecting the probe the meter enters the manual temperature compensation mode Instead of the symbol the is displayed In case o...

Страница 14: ... 10 VWR Collection PH 130 pH meter instruction manual v1 0x II pH MEASUREMENT ...

Страница 15: ...d calibration points and calibration validity time A B C Pic 5 Return to the measurement screen by pressing the button 9 1 Calibration points and date After pressing the button the following parameters are displayed Pic 5C the electrode condition calibration points validity time and date of the last calibration Markers next to the calibration points windows inform that the last calibration was per...

Страница 16: ...r solutions The temperature affects the buffer solutions pH value In order to provide pH buffer value corresponding to the default value in the meter during the calibration process the buffer s temperature has to be equal 20 o C If the electrode symbol turns yellow after the calibration is finished it informs that the electrode lost its efficiency and will have to be replaced soon An additional in...

Страница 17: ...he pH electrode and temperature probe into the solution do not touch the vessel s walls and bottom It is advisable to use an electrode holder The meter will mark the detected buffer s value with frame wait until the reading stabilises it will be probably slightly different than the calibration point value When the reading stabilises press the button Next to the detected buffer value an indicator w...

Страница 18: ...ies described above 10 2 Calibration with manual temperature compensation In case of the temperature probe breakdown calibration with manual temperature compensation may be proceeded To start this calibration disconnect the temperature probe It switches the meter to manual compensation Next to the entered not measured temperature value instead of the symbol the symbol will appear Entering the temp...

Страница 19: ...ay be also checked by immersing the electrode in 7 00 pH buffer and switching the meter to measurement in mV When the electrode is calibrated its condition may be checked To check enter the calibration points screen according to description in the point 9 1 At the top of the screen Pic 5C two parameters determined during the last calibration are displayed zero offset in pH and condition in In case...

Страница 20: ... temperature probe and the combination pH electrode to the F and t connectors respectively Pic 2 the symbol will be displayed immerse the electrode and the temperature probe in the measured solution During measurements in vessels don t touch the bottom and the walls with the electrode It is advisable to use an electrode stand after stabilisation read the result Accurate laboratory measurements req...

Страница 21: ...In case of measurement with manual temperature compensation turn the meter on with the button insert the pH electrode into the vessel with the measured solution if the electrode is not calibrated or has already been in use for a long period of time perform the calibration chapter 10 During measurements in a vessel don t touch its bottom and walls with the electrode It is advisable to use an electr...

Страница 22: ... 18 VWR Collection PH 130 pH meter instruction manual v1 0x III REDOX POTENTIAL AND TEMPERATURE MEASUREMENT ...

Страница 23: ...e measurement has been chosen next to the redox value the REL symbol will appear Pic 8C The difference between the redox potential value and the reference value is displayed 13 1 Relative measurement The meter enables relative measurement of the redox potential To make measurement on the redox potential parameters screen Pic 8B select the RELATIVE MEAS window Pressing the window again turns the re...

Страница 24: ...ge value press the button during the measurement process the currently measured voltage value will be entered into the REF VOLTAGE window automatically 14 REDOX POTENTIAL MEASUREMENT The measurement may be made with redox electrode or during titration To make measurement turn the meter on by pressing the button choose the redox potential measurement to be displayed on the measuring screen accordin...

Страница 25: ... the parameters return to the measurement screen by pressing the button 15 1 Unit The temperature reading may be displayed in C K or F By pressing the UNIT window choose the measurement unit 15 2 Temperature of the manual compensation After disconnecting the temperature probe the meter switches it self to the manual compensation automatically and calculates the entered temperature value To enter t...

Страница 26: ...esult The meter cooperates with Pt 1000 platinum resistor sensor and the final accuracy of the temperature measurement depends on the sensor s class Pic 11 NOTE break in the temperature probe s circuit switches the meter to the manual temperature compensation mode It is signalised by change of the symbol to the symbol Instead of the measured temperature value the value inserted by the user is disp...

Страница 27: ... 23 IV OPTIONS ...

Страница 28: ...creen and activate the stabilised reading signalisation mode MEM view the memorised measurement results MISC choose the language set the economical mode time and date INFO check the software version the serial number and the factory calibration date 17 1 Functions For the description of the FUNCT tab see the chapter 6 1 17 2 Memory For the description of the MEM tab see the chapter 18 17 3 Miscell...

Страница 29: ...rent date may be set To choose the language set sound or brightness press the chosen window a table will appear to choose the value To enter a numerical value press the chosen window a numerical keyboard will appear to enter the value and confirm with the button 17 3 1 Automatic switch off Automatic switch off mode prolongs an operating time with rechargeable batteries and prevents from dischargin...

Страница 30: ...low shows the influence of the brightness settings to the meter s operating time for NiMH rechargeable batteries with a capacity of 2000mAh backlight continuous operating time brightness 55 h brightness 45 h brightness 35 h brightness 30 h brightness 26 h 17 4 Info The INFO tab contains the software version the serial number and the factory calibration date Pic 13 Pic 13 Return to the measurement ...

Страница 31: ...emory even in case of power shortage 18 1 Entering readings into the memory Each press of the button memorises the rading The information about the free and used memory capacity will display for a short time above the reading Pic 14 Before the readings collecting is started the memory content may be deleted according to the next subchapter Pic 14 ...

Страница 32: ... the and buttons Pic 15A A B Pic 15 press the button A screen with the stored readings will display Pic 15B change the displayed sample number with the buttons or press the button a numerical keyboard will be displayed to enter the number of the chosen sample and confirm with the button To erase the memory content in the MEM tab on the options screen Pic 15A press and hold the button until in the ...

Страница 33: ...he charging process is finished The meter may work while being charged In order to replace the batteries it is necessary to unscrew two screws in the lower wall of the meter pull out the container with batteries and replace them paying attention to insert the batteries according to their polarity Next put the new batteries into the meter and mount the wall The wall has a sealing ring on the edge W...

Страница 34: ...105 Thermal stability of zero 0 001 pH C mV MEASUREMENT range resolution accuracy 1 digit 2000 0 2000 0 mV 1 mV 1 mV Input impedance 1012 Relative measurement range 3999 9mV TEMPERATURE MEASUREMENT range resolution accuracy 1 digit 50 0 200 0 C 0 1 C 0 1 C The accessories connected to the meter may have narrower working temperature range Accuracy given for the meter The final accuracy depends on t...

Страница 35: ...trode with a built in temp Sensor 1 meter cable 662 2353 REG 1 glass ORP redox electrode 1 meter cable 662 2357 TS 2B stainless steel temperature sensor 1meter cable 442 1264 Buffer solutions 20 C AVS TITRINORM pH 4 100 ml plastic bottles 32095 184 500 ml plastic bottles 32095 264 pH 7 100 ml plastic bottles 32096 187 500 ml plastic bottles 32096 267 pH 10 100 ml plastic bottles 32040 185 500 ml p...

Страница 36: ... product has been damaged by accident abuse misuse or misapplication or from ordinary wear and tear If the required maintenance and inspection services are not performed according to the manuals and any local regulations such warranty turns invalid except to the extent the defect of the product is not due to such non performance Items being returned must be insured by the customer against possible...

Страница 37: ...your responsibility to decontaminate the equipment in case of biological chemical and or radiological contamination so as to protect from health hazards the persons involved in the disposal and recycling of the equipment For more information about where you can drop off your waste of equipment please contact your local dealer from whom you originally purchased this equipment By doing so you will h...

Страница 38: ...WR International Ltd VWR International Northern Ireland Ltd Orion Business Campus Northwest Business Park Ballycoolin Dublin 15 Tel 353 01 88 22 222 Email sales ie vwr com ITALY VWR International S r l Via San Giusto 85 20153 Milano MI Tel 39 02 3320311 Email info it vwr com KOREA VWR International 17 Daehak 4 ro Yeongtong gu Suwon si Gyeonggi do Tel 82 31 645 7256 saleskorea avantorsciences com M...

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