Digital Conductivity / pH Meter
Contents
1. EXT USER GUIDE INSTRUMENTS A FLIR COMPANY Digital Conductivity pH Meter Model EC600 a A farm COMPANY Je ae plee 2236 Conductivity Meter Conductivity pH TDS i N D OO O0 S S EC600 Introduction Congratulations on your purchase of the Extech Conductivity pH meter The EC600 meter measures Conductivity pH and temperature parameters Conductivity measurements also yield TDS total dissolved solids Salinity and Resistivity readings The built in microprocessor provides automatic calibration automatic temperature compensation data storage and self diagnostics The meter can recognize up to 13 types of pH standard buffer solutions and 8 types of Conductivity standards The meter s digital filter improves measurement speed and accuracy Two special modes for distilled water and distilled water mixed with ammonia are provided The meter offers a backlit LCD display and is dust proof and water proof meeting the IP57 rating This device is shipped fully tested and calibrated and with proper use will provide years of reliable service Please visit our website www extech com to check for the latest version of this User Guide The Extech Instruments brand a wholly owned subsidiary of FLIR Systems Inc is ISO 9001 certified Supplied Equipment List e EC6000 Meter Conductivity and pH Electrodes e Standard pH buffer solutions 4 00pH 7 00pH and 10 01pH 50ml e St2. Measurements of distilled water and distilled water mixed with ammonia affect the temperature compensation and the slope linearity of the pH probe Such measurements are sometimes used in the electrical power and petrochemical industries Set these parameters to ON only if necessary otherwise leave these parameters in the OFF state 6 EC600 EU EN V2 2 12 12 Parameter P1 pH Buffer Solution Setting 1 From the pH measurement mode press and hold MODE for at least 2 seconds and then release the P1 icon appears on the LCD 2 Use the CAL or the M RM keys to toggle through the three 3 selections USA for use in the USA or Europe NIS for NIST calibration purposes and CH for use in China 3 Momentarily press MODE to move to the next parameter P2 or press ENTER to return to the normal measurement mode Parameter P2 Distilled Water Temperature Compensation Setting 1 From the P2 menu use the CAL or the M RM keys to turn this feature ON or OFF 2 Momentarily press MODE to move to the next parameter P3 or press ENTER to return to the normal measurement mode Parameter P3 Distilled Water with Ammonia Temperature Compensation Setting 1 From the P3 menu use the CAL or the M RM keys to turn this feature ON or OFF 2 Momentarily press MODE to move to the next parameter P4 or press ENTER to return to the normal measurement mode Parameter P4 Temperature Measurement Units Setting 1 From the P4 menu use the CAL or t
3. EU EN V2 2 12 12 mV Measurement Mode Turn the meter ON using the power key Momentarily press MODE to switch to the mV mode if necessary Connect the probe to the meter ee er Immerse the electrode in the sample solution slowly stir the solution with the electrode and then allow it to rest in the solution 5 When the smile face icon appears on the LCD the reading has stabilized mV Programming Parameters Parameters Back light display time hi 0 1 3 6 min L Auto power off time ar 0 10 20 min L Parameter P1 Display Backlight Setting Press MODE to access the P1 Parameter Use the CAL or the M RM keys to select 0 1 3 or 6 minute default backlighting time 3 Momentarily press MODE to move to the next parameter P2 or press ENTER to return to the normal measurement mode Parameter P2 Automatic Power OFF Setting 1 From the P2 menu use the CAL or the M RM keys to select a 0 10 or 20 minute Auto Power OFF time 2 Momentarily press MODE to move back to Parameter P1 or press ENTER to return to the normal measurement mode 9 EC600 EU EN V2 2 12 12 Conductivity Measurement Mode Preparation for Measurement Turn the meter ON using the power key Press the MODE key momentarily to switch to the Conductivity mode if necessary Use the ENTER key to select TDS Total Dissolved Solids Salinity Resistivity and Conductivity 4 Unscrew the protective cap on the probe jack located on the bottom of the met
4. al measurement mode Parameter P8 Automatic Power OFF Setting 1 From the P8 menu use the CAL or the M RM keys to select a 0 10 or 20 minute Auto Power OFF time 2 Momentarily press MODE to move to the next parameter P9 or press ENTER to return to the normal measurement mode Parameter P9 Restore Factory Default Settings 1 From the P9 menu use the CAL or the M RM keys to select ON reset the factory default settings or OFF cancel edit Note that by selecting ON the factory default settings will automatically switch ON there is no confirmation step The user should select ON only if absolutely certain that the default settings be accessed 2 Momentarily press MODE to move to the first parameter P1 or press ENTER to return to the normal measurement mode 13 EC600 EU EN V2 2 12 12 Conductivity Measurement Calibration and Maintenance Considerations The meter and probe are calibrated before leaving the factory the user can take measurements immediately upon receiving the unit The recommend calibration period is once per month under normal circumstances It is necessary to calibrate a newly purchased conductivity electrode or one that has been in service for a long period of time Keep the conductivity electrode clean It s best to rinse electrodes with distilled water and air dry The surface of the supplied conductivity electrode is plated with a layer of metal platinum black in order to lower the electrode polar
5. andard Conductivity solution 1413uS cm 50ml Screwdriver for removing battery compartment Batteries 2 x AA 1 5V e Users Guide e Carrying Case 2 EC600 EU EN V2 2 12 12 Meter Description 1 LCD Display detailed in section below 2 Rubber protective jacket remove to access the rear battery compartment 3 Keypad detailed in section below 4 Electrode connection jack E 5 Electrode plug 1 l ug Q 6 Electrode cable 5 oo 236 Conductivity Meter Dandut pN TOS Display Description 1 Measurement type icon 2 Measured reading 3 888 Stored data serial number M measurement to be stored icon RM reading to be recalled icon 4 Units of measure 5 Temperature reading 6 Stable measurement icon LPH my mes COND RES TDS SAL 7 Calibration icons mV 8 Low battery icon j j j pH ow Same amw amw SMO 4 ALLA sko o Zn o mn o amm mg L 3 EC600 EU EN V2 2 12 12 Keypad Description The meter has five 5 front panel function keys ON OFF ON OFF Power Key Calibration Key a b When taking a measurement press this key to enter the calibration mode When in the programming mode press this key to change the displayed number or the ON OFF state Function Key a b In pH measuring mode one short press switches between pH and mV measuring modes One long press gt 2s enters the parameter setting mode Subsequent presses will s
6. ar on the LCD For a 10 01pH Calibration only the circled H will appear Low Medium and High Note Use the ENTER key to exit the Calibration mode and return to the normal measurement mode when performing 1 or 2 point calibrations For all other applications a 3 Point Calibration is recommended Always perform a 3 Point Calibration on new probes and probes that have been in use for long periods This maximizes measurement slope linearity 9 EC600 EU EN V2 2 12 12 Testing the pH of a Sample 1 2 3 4 Perform the pH Calibratoin as described above Rinse and dry the pH Probe and submerge it in a sample liquid Stir the solution briefly with the probe and allow it to stand until the display stabilizes Note that the closer the temperature of the sample solution to the calibration solution the more accurate readings Programming pH Parameters The Table below shows the available programming menu items P1 P7 Each parameter is explained in detail in the subsequent sections C pH buffer solution series selection USA Europe amp U S A NIS NIST CH China Distilled water pH temperature OFF ON f f compensation setting see notes below this Table m Distilled water with Ammonia pH pi f Poa OFF ON temperature compensation setting see Notes below this Table een OC ona BE jem C M Auto power off setting 0 10 20min Restore to default factory settings oj OFF ON Notes on P2 and P3 Parameters
7. croll through the available parameters In other measuring modes press and hold to enter the parameter setting modes The meter will scroll through the available parameters Backlight and ENTER Key a b c d In the measurement mode momentary presses toggle the backlight on and off When in the programming or calibration mode press to ENTER data When in the pH mode press and hold to change the resolution in the range of 0 01 to 0 1pH When in the Conductivity mode press and hold to scroll through the TDS Salinity Resistivity and Conductivity modes MEMORY STORE and RECALL Key a b In the measurement mode momentary presses store the displayed readings Press and hold for at least 2 seconds to recall a saved reading In programming mode press to change the displayed number or ON OFF state Store Recall and Clear Datalogger Memory STORE Readings The meter can store up to 100 pH 100 mV and 100 Conductivity readings for a total of 300 data points To store a reading wait until the reading stabilizes the smiling face icon appears when the reading stabilizes Press the M RM key momentarily to store a reading The M icon appears and the data point serial number increments RECALL Readings In the measurement mode press the M RM key to recall the most recently stored reading RM and the data point serial number for the displayed reading will appear on the LCD The measurement information will appear on the l
8. er store the protective cap in the carrying case for later use 5 Carefully connect the electrode to the meter s input jack The electrode can only be inserted in one orientation Once it is firmly connected screw the electrode collar onto the meter to secure it Calibration Press the CAL key and CAL will appear flashing on the LCD Clean and air dry the conductivity electrode use distilled water to clean 1 2 3 Immerse the electrode in the 1413yuS cm calibration solution 4 Stir the solution with the electrode and then allow it to rest in the solution until the stabilized icon smile face icon appears 9 Press CAL again and the display will flash 1413uS cm After several seconds the END icon will appear and the meter will return to the measuring mode 6 The LCD will display the stable measurement reading 1413yuS cm and the calibration icon M indicating that the calibration is complete 7 Ifthe measurement value is unstable repeat the calibration until the measurement is stable Replace the electrode if necessary Notes The meter is calibrated before leaving the factory and can generally be used right out of the box The meter can only be calibrated in the Conductivity mode and not from the TDS Salinity or Resistivity mode Measuring the Conductivity of a Sample 1 Clean and dry the conductivity electrode and immerse in the sample solution 2 Stir the solution and then allow the electrode to r
9. est in the solution until the reading stabilizes smile face icon appears 3 Read the conductivity measurement on the meter s display 6 Use the ENTER key to select TDS Total Dissolved Solids Salinity Resistivity and Conductivity measurement modes Calibration Considerations This meter offers two calibration solution series configured in Parameter P1 a Europe amp U S A series 84uS cm 1413uS cm 12 88 mS cm and 111 9 mS cm b China series 146 6uS cm 1408uS cm 12 85mS cm and 111 3 mS cm The EC600 offers a unique one point calibration feature The user can select the calibration solution closest to the expected measuremnt value In general the most common calibration solution is 1413 uS cm Use the supplied conductivity electrode K 1 cm and perform the calibration using the supplied 1413 uS cm calibration solution The meter can then be used for measurements below 100 mS cm Please refer to the chart below 10 EC600 EU EN V2 2 12 12 0 05 to 20uS cm 0 5uS cm to 200mS cm oa constant K 0 1cm flow K 0 1om low test K 1 Keto nomen solution oa 1413uS cm 12 88 mS cm 111 9 mS cm O O There are two electrode calibration methods Standard Solution calibration and Constant calibration The calibration described above in the section Calibration refers to the Standard Solution method the most accurate calibration method assuming the calibration buffer standard is accurate and fresh To
10. fety certification ISO 9001 CE and CMC Working Conditions Environment temperature 5 to 35 C 41 to 95 F IP rating IP57 Dustproof and waterproof Copyright 2012 FLIR Systems Inc All rights reserved including the right of reproduction in whole or in part in any form www extech com 16 EC600 EU EN V2 2 12 12
11. ffer solution should be refreshed often especially after heavy use For best accuracy always keep the meter clean and dry especially the meter s electrode and electrode jack Clean with medical cotton and alcohol if necessary The sensitive glass bulb at the front of the combination electrode should not come in contact with hard surfaces Scratches or cracks on the electrode will cause inaccurate readings Before and after each measurement the electrode should be washed with distilled water and air dried Do not clean the glass bulb with a tissue for it will affect the stability of the electrode potential and increase the response time The electrode should be thoroughly cleaned if a sample sticks to the electrode Use a solvent if the solution does not appear clean after washing Electrodes that have been used over a long period of time used in a strong solution that has damaged the sensitive bulb or used with a substance resulting in a jam at the junction will be become passivated the sensitivity will decrease its response will slow and the readings will be inaccurate Replace the electrode as soon as possible in these cases For abnormal readings try calibrating again if the problem persists replace the Electrode The user can also try resetting the meter to factory default conditions per Parameter P7 detailed in an earlier section Electrode life can be shortened by heavy use extreme conditions and improper maintenance 8 EC600
12. he M RM keys to turn this feature ON or OFF 2 Momentarily press MODE to move to the next parameter P5 or press ENTER to return to the normal measurement mode Parameter P5 Display Backlight Setting 1 From the P5 menu use the CAL or the M RM keys to select 0 1 3 or 6 minute default backlighting time 2 Momentarily press MODE to move to the next parameter P6 or press ENTER to return to the normal measurement mode Parameter P6 Automatic Power OFF Setting 1 From the P6 menu use the CAL or the M RM keys to select a 0 10 or 20 minute Auto Power OFF time 2 Momentarily press MODE to move to the next parameter P7 or press ENTER to return to the normal measurement mode Parameter P7 Restore Factory Default Settings 1 From the P7 menu use the CAL or the M RM keys to select ON reset the factory default settings or OFF cancel edit 2 Momentarily press MODE to move to the first parameter P1 or press ENTER to return to the normal measurement mode i EC600 EU EN V2 2 12 12 pH Measurement Calibration and Electrode Considerations Error messages ERR 1 Electrode zero potential error and ERR 2 Electrode slope error For either error check the following 1 Air bubbles in the electrode bulb Shake rigorously to remove air bubbles 2 Accuracy of the pH buffers used in calibration Replace buffers if necessary 3 Set meter to its factory default state in Parameter P7 previous section of manual Calibration i
13. ization and increase the measuring range Do not polish the black platinum surface clean it by stirring in Distilled water If excessive organic buildup appears on the black platinum coating clean with hot water and detergent or with alcohol Replace the electrode if the above cleaning methods are ineffective Reset the meter to its factory default settings Parameter P9 if unusual operation is noticed If the restore process does not solve the issue return the unit for an evaluation 14 EC600 EU EN V2 2 12 12 Specifications pH Specifications 0 to 100 C 32 to 212 F automatic ATC mV Specifications ange 000 Conductivity Specifications NNN IK UE 0 00 to 19 99 uS cm 0 01 uS cm 20 0 to 199 9 uS cm 0 1 uS cm 200 to 1999 uS cm 1 uS cm 2 00 19 99 mS cm 0 01 mS cm 20 0 to 199 9 mS cm 0 1 mS cm 0 to 100 g L a TDS Total Dissolved Solids J Conductivity Salinity O to 100 ppt 1 ppt Meter only 1 F S with probe 2 F S Electrode constant 0 1 1 10cm Reference temperatures 25 20 and 18 C 77 68 and 64 F Temp Compensation 0 to 50 C 32 to 122 F Automatic 15 EC600 EU EN V2 2 12 12 Other Technical Parameters Data storage 300 data groups Storage content Data serial number measurement value unit of measure Two AA batteries 1 5V x 2 Size and weight Meter 65 x 120 x 31mm 2 6 x 4 7 x 1 2 180g 6 3 oz Case 360 x 270 x 76mm 14 1 x 10 6 x 3 1 7kg 3 57 Ibs Quality Sa
14. lained in detail in the subseguent sections C Standard solution series selection cru USA Europe amp U S A ili CH China r LO L Electrode Constant selection 0 1 1 0r 10 fi Reference Temperature selection EF 77 68 and 64 F 25 20 and 18 C Electrode Constant Calibration a or l Back light display time setting L 0 1 3 6 minutes p Auto power off setting L 0 10 20 minutes Restore to default factory settings a OFF ON Parameter P1 pH Buffer Solution Setting Temperature compensation 0 00 to 9 99 coefficient setting C Li 1 From the pH measurement mode press and hold MODE for at least 2 seconds and then release the P1 icon appears on the LCD 2 Use the CAL or the M RM keys to toggle through the two 2 selections USA for use in the USA or Europe and CH for use in China 3 Momentarily press MODE to move to the next parameter P2 or press ENTER to return to the normal measurement mode Parameter P2 Electrode Constant K Selection 1 From the P2 menu use the CAL or the M RM keys to select the desired electrode constant 0 1 1 0 or 10 The default setting is K 1 0 2 Momentarily press MODE to move to the next parameter P3 or press ENTER to return to the normal measurement mode 12 EC600 EU EN V2 2 12 12 Parameter P3 Reference Temperature Selection 1 From the P3 menu use the CAL or the M RM keys to select the desired reference temperature 25 20 o
15. ntervals depend on the sample the electrode performance and the required accuracy For high accuracy measurements lt 0 02pH the meter should be calibrated immediately before taking a measurement For general accuracy 2 0 1pH the meter can be calibrated and used for approximately one week before the next calibration The meter must be recalibrated in the following situations 1 New probe or probe that is unused for a long period of time 2 After measuring acids pH lt 2 or alkaline solutions pH gt 12 3 After measuring a solution that contains fluoride or a concentrated organic solution 4 Ifthe solution s temperature differs widely from the calibration solution temperature The soaking solution contained in the supplied protective bottle is used to maintain activation in the glass bulb and junction Loosen the capsule remove the electrode and rinse in distilled water before taking a measurement Insert the electrode and tighten the capsule after measurements to prevent the solution from leaking If the soak solution is turbid or moldy replace the solution To prepare a soak solution Use 25g pure KCL dissolved with purified water and diluted to 100mL The electrode should not be soaked in a purified water protein solution or an acid fluoride solution for long periods of time In addition do not soak the electrode in organic silicon lipids For calibration accuracy the pH of the standard buffer solution must be reliable The bu
16. on procedure is complete when the display stops blinking and shows the C2 icon The unit will automatically switch to the second point of the calibration 5 Rinse the probe in distilled water again allow it to dry and submerge it into a pH 4 00 buffer solution Stir the solution briefly and allow it to stay in the buffer solution until a stable reading is reached Press CAL again and the display will show a blinking 4 00 7 This portion of the calibration procedure is complete when the display stops blinking and shows the C3 icon The unit will automatically switch to the third point of the calibration 8 Rinse the probe in distilled water again allow it to dry and submerge it into a pH 10 01 buffer solution Stir the solution briefly and allow it to stay in the buffer solution until a stable reading is reached 9 Press CAL again and the display will show a blinking 10 01 10 After the display stabilizes the 3 point calibration icon will appear M 1 Point and 2 Point Calibration Note that the user can calibrate one or two points only if the expected measurement is known For example if the expeced pH is 4pH it is acceptable to perform only a 1 Point Calibration 4pH If the expected measurement is between 4 00pH and 7 00pH the user can perform a 2 Point Calibration 4 00 and 7 00pH and so on For a 4pH calibration only the circled L will appear on the LCD For a 7 00pH only the circled M will appe
17. ower right hand side of the LCD Use the CAL or M RM buttons to scroll the remaining stored readings Press the ENTER key to return to the normal measurement mode CLEAR Readings From the RECALL mode press and hold the ENTER key for at least five 5 seconds The LCD display will show CLR indicating that all of the stored readings have been erased The unit will automatically return to the normal measurement mode after approximately 2 seconds 4 EC600 EU EN V2 2 12 12 pH Measurement Mode Preparation for Measurement Turn the meter ON using the power key Connect the pH electrode to the meter and the pH mode will automaticaly be selected Unscrew the protective cap on the probe jack located on the bottom of the meter store the protective cap in the carrying case for later use 4 Carefully connect the pH probe to the meter s probe jack The probe can only be inserted in one orientation Once it is firmly connected screw the probe collar onto the meter to secure the probe 3 Point Calibration 7 00pH 4 00pH and 10 01pH Press the CAL key to enter the Calibration mode The meter s display will show a blinking C1 2 Rinse the probe in distilled water allow it to air dry and submerge it into a pH 7 00 buffer solution Stir the solution briefly and allow it to stay in the buffer solution until a stable reading is reached 3 Press CAL again and the display will show a blinking 7 00 This portion of the calibrati
18. r 18 C The default setting is 25 C 2 Momentarily press MODE to move to the next parameter P4 or press ENTER to return to the normal measurement mode Parameter P4 Temperature Coefficient Temperature Compensation Setting 1 From the P4 menu use the CAL or the M RM keys to select the coefficient in percent from 0 00 to 9 99 When set to zero the temperature compensation is turned OFF The default setting is 2 0 2 Momentarily press MODE to move to the next parameter P5 or press ENTER to return to the normal measurement mode Parameter P5 Electrode Constant calibration 1 In the P5 window the user can see the existing constant in the main measurement area of the LCD incm units 2 From the P5 menu use the CAL or the M RM keys to change the constant to match the constant printed on the electrode housing 3 Momentarily press MODE to move to the next parameter P6 or press ENTER to return to the normal measurement mode Parameter P6 Temperature units of measure 1 From the P6 menu use the CAL or the M RM keys to select the desired unit of measure C or F 2 Momentarily press MODE to move to the next parameter P7 or press ENTER to return to the normal measurement mode Parameter P7 Display Backlight Setting 1 From the P7 menu use the CAL or the M RM keys to select 0 1 3 or 6 minute default backlighting time 2 Momentarily press MODE to move to the next parameter P8 or press ENTER to return to the norm
19. select the Constant calibration method use Parameter P5 described below in the Programming Parameters Conductivity section The meter s temperature compensation coefficient is 2 0 However the conductivity temperature coefficient is different for solutions of a different variety and concentration Use the chart below for common solution types use Parameter P4 as described below in the Programming Parameters Conductivity section The meter can perform an automatic non linear temperature compensation in distilled water for measurements below 10 uS cm Note When the coefficient for the temperature compensation is set to 0 00 no compensation the measurment value will be based on the current temperature Temperature compensation coefficient NaCI salt solution 2 12 5 NaOH solution 1 72 Diluted ammonia solution 1 88 10 hydrochloric acid solution 1 32 5 sulfuric acid solution 0 96 Important Note When one or more of the programmable parameters is changed by the user from its original factory default condition the parameters code shown below is displayed in the upper right corner of the display as shown in diagram below in this case Parameter Tcc If more than one parameter is changed only the code from the first parameter change is displayed 11 EC600 EU EN V2 2 12 12 Programming Parameters Conductivity The Table below shows the available programming menu items P1 P7 Each parameter is exp
Download Pdf Manuals
Related Search