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Carl Roth COND 50 VioLab, Instruction Manual

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Carl Roth COND 50 VioLab Instruction Manual Download Page 13

 

12    

UM Serie 50VioLab EN rev.1 19.05.2020 

EN 

 

Inputs / Outputs Connections                                                    

 

Use original accessories guaranteed by the manufacturer only. 
If necessary, contact your local distributor. 
The BNC connectors are protected by a plastic cap. 
Remove the cap before connecting the probes. 
 

PC 50 VioLab upper panel

 

 

 
 
 
 
 
 
 

 

 

 

 
 
 
 
 

 

Symbols and icons on the display 

Symbol 

Description 

Symbol 

Description 

 

 
Press the directional keys to change the 
parameter or value on the display 

 

Error in measurement or calibration 

 

DHS digital sensor active 

 

The bars scroll if the measurement 
is not stable 

 

Measurement stability indicator 

 

 

 
 
 
 
 
 
 
 
 
 
 
 

RCA for pH Temperature 

probe 

 

BNC for pH/ORP electrodes 

BNC for conductivity cell 

 

 

RCA for Conductivity 
Temperature probe 

Connection to the power grid 
through a 5V power supply

 

4mm banana for 

reference electrode

 

 

Summary of Contents for COND 50 VioLab

Page 1: ......

Page 2: ...1 UM Serie 50VioLab EN rev 1 19 05 2020 EN ...

Page 3: ...et 8 Instrument description 9 Display 9 Keyboard 9 LED 9 Installation 10 Supplied components 10 Start up 10 Connection of the power supply 10 Turning On and Off 10 Instrument transportation 11 Key functions 11 Inputs Outputs Connections 12 Symbols and icons on the display 12 Operation of the device 13 Setup Menu 14 Setup Menu Structure 14 Temperature measurement ATC MTC 15 pH Parameter 15 pH param...

Page 4: ...ductivity Parameter 21 how to get Conductivity 21 Setup for Conductivity Parameter 21 Automatic COND calibration 24 Manual COND calibration 25 Errors during calibration 25 Performing Conductivity measurement 26 TDS Parameter 26 Instrument Setup Menu 27 Warranty 28 Warranty period and limitations 28 Disposal of electrical devices 28 ...

Page 5: ... to the instructions that appear directly on the display The calibration is guided step by step and the instrument configuration menu is easy to consult In addition a LED indicates the status of the system to the user Up to 3 pH calibration points can be carried out between 8 automatically recognized values and 5 points for Conductivity in addition buffers chosen by the operator can be used It is ...

Page 6: ... a medium risk hazardous situation which could lead to serious injury or death if not avoided ATTENTION for a dangerous situation with reduced risk which can cause material damage data loss or minor or medium sized accidents if not avoided WARNING for important information about the product NOTE for useful information about the product Warning symbols Attention This symbol indicates a potential ri...

Page 7: ...is only if explicitly authorized by the manufacturer Unauthorized use The instrument must not run if It is visibly damaged for example due to transportation It has been stored for a long period of time in adverse conditions exposure to direct light heat sources or places saturated by gas or vapours or in environments with conditions different from those mentioned in this manual Device maintenance ...

Page 8: ... all users of the tool and third parties The owner of the instrument must inform users of the use of the same safely in their workplace and on the management of potential risks also providing the required protective devices When using chemicals or solvents follow the manufacturer s safety data sheets Instrumental features Parameters pH 50 VioLab pH mV ORP Temp COND 50 VioLab Cond TDS Temp PC 50 Vi...

Page 9: ... buffers 1 4 84 147 1413 μS 12 88 111 8 mS 1 user value Reference Temperature 15 30 C Temperature coefficient 0 00 10 00 C TDS COND 50 VioLab PC 50 VioLab Measuring range TDS Factor 0 1 mg l 200 0 g l 0 40 1 00 Temperature pH 50 VioLab COND 50 VioLab PC 50 VioLab Measuring range 0 100 C Resolution Accuracy 0 1 0 5 C Temperature compensation ATC NTC30KΩ and MTC pH 0 100 C Cond 0 100 C System Displa...

Page 10: ...d DHS deactivation red Fixed Down directional key to scroll through the menus and values in setup Enter Menu key to confirm the chosen values and enter the setup from the measure mode Measurement parameter Indication of instrumental mode Representation of buffers used for calibration Error symbol Actual value Measure unit Temperature and type of compensation ATC automatic NTC 30KΩ MTC manual DHS c...

Page 11: ... only Connect the power supply plug to the connector on the rear panel of the instrument indicated with the icon Connect the power supply to an electric socket easy to reach The instrument is equipped with a power supply unit which is not protected against any liquid entry therefore for its use it is necessary to keep all electrical cables and connections away from any liquids humidity and not to ...

Page 12: ...n Short In measure mode press to enter the setup In the setup menus press to select the desired program and or value During calibration press to confirm the value Short In the setup and sub setup menus press to scroll In the setup submenus press to change the value In MTC and custom calibration mode press to change the value Long press 3s In measure mode keep one of the two keys pressed to change ...

Page 13: ...ymbols and icons on the display Symbol Description Symbol Description Press the directional keys to change the parameter or value on the display Error in measurement or calibration DHS digital sensor active The bars scroll if the measurement is not stable Measurement stability indicator RCA for pH Temperature probe BNC for pH ORP electrodes BNC for conductivity cell RCA for Conductivity Temperatur...

Page 14: ... automatically restarts from the first one In the measurement screens for the pH ORP and Conductivity parameters press the key to start the calibration of the active parameter next paragraphs On the left side of the display through a string of different colours it is always indicated how the instrument is located Note in order to confirm to the user the switching from one mode to another the strin...

Page 15: ...it Using the keys and choose the desired option or change the numerical value and confirm with The value or parameter being edited is recognizable as it flashes on the display The icon indicates that the value or parameter to choose is editable using the directional keys Press the key to return to the previous menu Setup Menu Structure P1 0 PH SETTINGS P1 1 Buffer Selection P1 2 Resolution P1 3 Se...

Page 16: ... connector always marked with a green background The instrument is also able to recognize the DHS sensor an innovative electrode that stores calibration data and that can be used immediately after on any enabled instrument pH parameter Setup In measure mode press to access the SETUP menu Press the button to access the pH SETTINGS P1 0 menu Move with the keys and to select the program to access The...

Page 17: ...ly in conditions of high measurement stability readings within 0 3 mV P1 6 pH Calibration data Access this menu to get information about the last calibration performed The following screens will automatically scroll on the display first screen beakers indicating the buffers used second screen OFFSET value of the electrode expressed in mV third and possibly fourth screen Slope in the measuring rang...

Page 18: ... beaker pH 4 01 appears next to the green beaker indicating that the instrument is calibrated in the acid field Remove the electrode rinse with distilled water and dab gently with paper towel Dip the sensor in the pH 10 01 buffer solution CHANGE BUFFER The instrument is now ready to recognize the third calibration point Next to the string 3RD POINT PH the different buffers that the device can reco...

Page 19: ...4 65 as suggested by the string ADJUST THE VALUE and by the icon When the icon appears again press the key to confirm the second point the actual measured value flashes on the display the Slope and next to the first beaker the icon with identifying colour of the second buffer appears At the end of the second calibration point the instrument automatically returns to measure mode To perform a one po...

Page 20: ...easuring range one Slope only if two calibration points are performed two Slope if three points are performed When the DHS electrode is recognized the active calibration on the instrument becomes the one of the sensor The icon on the display indicates that the connection was successful If the calibration is satisfactory see the calibration data in menu P 1 6 the electrode is ready to start the mea...

Page 21: ...ORP Parameter Setup In measure mode press the key to access the SETUP menu Use the directional keys to move to ORP SETTINGS P2 0 and access the menu by pressing the key Move with keys and to select the program to access The table below shows the Setup menu structure for the ORP parameter for each program there are the options that the user can choose and the default value Program Description Optio...

Page 22: ...ility of the ions contained in a solution to conduct an electric current This parameter provides a fast and reliable indication of the quantity of ions present in a solution how to get Conductivity The first Ohm s law expresses the direct proportionality in a conductor between the current intensity I and the applied potential difference V while the resistance R represents the proportionality const...

Page 23: ...lect automatic or manual recognition of the standards for performing the calibration AUTOMATIC default The device automatically recognizes up to 3 of the following standards 84 µS cm 147 µS cm 1413 µS cm 12 88 mS cm e 111 8 mS cm CUSTOM the device can be calibrated on a point with a manually entered value Note To obtain accurate results it is advisable to calibrate the device with standards close ...

Page 24: ...the calibration coefficient of a solution the following formula is applied 𝑡𝑐 100𝑥 𝐶𝑇2 𝐶𝑇1 𝐶𝑇1 𝑇2 25 𝐶𝑇2 𝑇1 25 Where tc is the temperature coefficient to be calculated CT1 and CT2 are Conductivity at temperature 1 T1 and at temperature 2 T2 Each result with correct temperature is plagued by an error caused by the temperature coefficient The better the temperature correction the lower the error The...

Page 25: ...e returns to measure mode One point calibration is enough if measurements are performed within the measurement range For example the standard solution 1413 µS cm is suitable for measurements between 200 2000 µS cm To calibrate the instrument on several points once returned to the measure mode repeat all the calibrations steps The beaker relating to the new calibrated point will join the previous o...

Page 26: ...ated in the low conductivity range Automatically the device returns to measure mode For each cell constant P3 1 the instrument stores the calibration in order to allow the user who uses multiple sensors with different constants not to be forced to recalibrate each time The instrument recalls the last calibration with respect to parameter P3 1 cell constant and P3 2 type of calibration solutions se...

Page 27: ...asurement is finished wash the cell with distilled water The Conductivity sensor does not require much maintenance the main aspect is to make sure that the cell is clean The sensor must be rinsed with abundant distilled water after each analysis if it has been used with water insoluble samples before carrying out this operation clean it by immersing it in ethanol or acetone Never clean it mechanic...

Page 28: ... PC 50 VioLab P9 1 Temperature Unit Access this setup menu to select the temperature unit to use C default F P9 4 Brightness Access this setup menu to choose between three different levels of display brightness LOW low MEDIUM medium HIGH high P9 6 Select Parameters Function available only for PC 50 VioLab Through this setup menu it is possible to select which parameters do NOT display in measure m...

Page 29: ...rer will repair or replace defective components This warranty is valid only and exclusively on the electronic parts of the device and does not apply if the product has been damaged used incorrectly exposed to radiation or corrosive substances if foreign materials have penetrated inside the product or if changes have been made which have not been authorized by the manufacturer Disposal of electrica...

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