WK2017SD - General Tools And Instruments
Contents
1. Tu 1 Poston Date Time Chl Value Chl Unit Ch Value Ch unit and plug it into your computer either 1 2009812 13 16 36 71 247 Degree C directly if it has an SD card slot or 4 wow i64 T2 s 247 5 4 2009 12 13 16 42 Je uS 24 7 Degree C UE Because the files containing time 7 2009 12 131648 NA 247 stamped data logs have the file C ma extension xls they open in m xown aS 247 Damc Microsoft s Excel application ME seme Tem ENS Figures 5 6 and 7 show three kinds of Excel presentations a data only 7 screen graphics only screen and a mixed data graphics screen e 72 Fig 7 Typical Excel mixed data graphics screen SPECIFICATIONS Embedded microcontroller Custom one chip LSI device Display type Liquid crystal with green backlight Display size 2 05 x 1 5 in 52 x 38mm Parameters measured pH ORP conductivity TDS DO content salt content Measurement range 0 to 14 for pH 1999 mV to 1999 mV for ORP conductivity up to 200 mS milliSiemens TDS up to 132 000 ppm DO up to 20 mg L salt content up to 12 by weight Measurement accuracy 0 02 pH units 2 digits for pH 0 5 of reading 2 digits for ORP 2 of full scale reading 1 digit for conductivity and TDS 0 8 C 1 5 F for temperature 0 4 mg L for DO in solution and 0 1 for oxygen in air2. Pressing the LOGGER SET button at this point will make REC flash and add the flashing term LOGGER at the top right of the display This indicates that the instrument is currently storing measured values and their time stamps in memory 2 To pause automatic datalogging press the LOGGER SET button once this action makes the flashing term LOGGER disappear from the top right of the display and changes the term REC from flashing to constant Pressing the LOGGER SET button again resumes automatic datalogging 3 To end automatic datalogging press the REC ENTER button and hold it for at least two seconds This action causes the REC message to disappear 4 To log data manually set the sampling time to zero using the procedure detailed earlier Then press the REC ENTER button once The display will show the term REC on the top line a value in the middle and below it the letter P on the left and a number from 1 to 99 on the same line to the right The number indicates the position on the SD card that will be used to store manually logged data Now press the LOGGER SET button This will cause the beeper to sound and the term LOGGER to briefly appear at the upper right of the display As in automatic datalogging mode in this mode the instrument is storing measurements and their time stamps on the SD card In manual datalogging mode however measurements are being stored continuously with a sampling time of ze
3. 0 5 of value for salt Measurement resolution 0 01 unit for pH 1 mV for ORP for conductivity 0 1 uS 200 uS full scale f s 0 001 mS 2 mS f s 0 01 mS 20 mS f s 0 1mS 200 mS f s for TDS 0 1 ppm 200 ppm f s 1 ppm 2 000 ppm f s 10 ppm 20 000 ppm f s 100 ppm 100 000 ppm f s 0 1 F 0 1 C for temperature 0 1 mg L for DO in solution and 0 196 for oxygen in air 0 0196 of reading for salt Temperature compensation Automatic between 32 and 150 F 0 and 65 C when using optional ATC temperature probe manually settable between 32 and 212 F 0 and 100 C without ATC probe Storable recallable readings Maximum minimum Datalogging sampling time SD card capacity Settable parameters Operating temperature Operating relative humidity Power source Power consumption Settable between 1 second and 8 hours 59 minutes 59 seconds in automatic datalogging mode 1 GB to 16 GB Date time auto power off beep sound sampling time decimal point or comma decimal division temperature unit compensation temperature Also salt and altitude compensation DO mode only 32 to 122 F 0 to 50 C 0 to 85 6 Alkaline AA batteries or optional 9 VDC AC adapter 14 mADC normal operation with backlight off and SD card not saving data 37 mADC with backlight on and card saving data 49 mADC with backlight on and card saving data Dimensions of meter 6 97 x 2 68 x 1
4. 2 3 ij 4 Holding the electrode by its handle immerse it in the bottle of buffer solution If you are using the ATC temperature probe immerse its head in the bottle as well 5 Gently shake the electrode and the probe if used 2 4 The display will show the pH value 6 Use two fingers to press the REC ENTER and HOLD ESC buttons at the same time When PH this screen appears release the buttons CAL Press the W or A button until this screen appears Press the REC ENTER 7 00 button to calibrate the electrode for pH 7 CAL 8 Press the V or A button again until this screen appears Press the REC ENTER button to 4 00 calibrate the electrode for pH 4 CAL 9 Press the V or A button again until this screen appears Press the 10 00 REC ENTER button to calibrate the electrode for pH 10 CAL 10 The pH electrode has now been calibrated once To maximize measurement accuracy General recommends rinsing the head of the electrode and the head of the ATC temperature probe if used in distilled water and then repeating the above steps at least twice more 11 To recalibrate the electrode in the future you must clear the existing settings To do so press the W or A button until this screen appears Then press the REC ENTER button to clear the saved settings before CLr repeating the steps above to calibrate the electrode for pH 7 pH 4 CAL and pH 10 CALIBRATING THE CONDUCTIVITY TDS SALT PROBE The following procedure is s
5. 4 4 5 Probe head protective cover 1 Plug the probe plug into the DO probe socket callout 1 14 of Fig 1 on the top of the meter 2 Power on the instrument by pressing the POWER button on the front panel 3 Press the A button which has the word MODE stenciled above it until the display shows the term do 4 Press the V button which has the word Function stenciled above it to switch the unit shown on the display from mg L to 02 5 Wait at least five minutes until the display readings stabilize 6 Use two fingers to press the REC ENTER and HOLD ESC buttons at the same time 7 Release your fingers once this screen appears indicating that air typically has an oxygen content of 20 9 8 Press the REC ENTER button The display will then count down from 30 seconds to 0 9 When the countdown is complete press the W button once to return to the normal display of mg L 4 5 20 9 CAL NORMAL OPERATION The WK2017SD can operate in any of four measurement modes selectable by pressing the button which has the word Function stenciled above it Pressing the button repeatedly cycles through the modes and produces the following on screen text e PH for measuring the pH or ORP of a solution e Cd for conductivity and TDS measurements e SALt for measuring the salt content of a solution by weight e do for dissolved oxygen measurements 1 To select the me
6. in uS or mS and its temperature 6 To measure the salt content of a solution power on the meter and press the W button until the display shows the term Cd again indicating operation in conductivity measurement mode Then press the W or A button until the term SALt appears Next press the REC ENTER button to store the setting as the temporary default To make the salt content measurement hold the conductivity probe by its handle and immerse it in the solution under test Gently shake the head of the probe to help any air bubbles escape and to ensure an accurate reading The display will show the salt content of the solution as a 9o by weight value 7 To measure the DO content of a liquid power on the meter and press the W button until the display shows the term do indicating operation in DO measurement mode Then after making sure that the optional oxygen probe you have obtained is full of fresh electrolyte and has been recently calibrated remove the protective cover from the probe head and plug the probe into its dedicated socket on the top of the meter callout 1 14 of Fig 1 To make the DO content measurement do the following 1 Insert the probe at least 4 in 10cm into the liquid to be measured 2 Wait a few minutes for the instrument to automatically compensate for any difference in temperature between the probe and the liquid 3 Read the DO content of the liquid in mg L on the upper display and its tempe
7. 77 in 177 x 68 x 45mm Weight of meter 1 08 Ib 4899 MAINTENANCE amp TROUBLESHOOTING TIPS Keep all probes and electrodes clean and protected from the elements when not in use When a pH electrode is not being used General recommends keeping its head inserted in the bottle of pH buffer solution When the icon dX appears in the left corner of the display it s time to replace the six AA batteries that power the instrument although measurements will remain valid for several hours after the low battery indicator first appears Replacing the batteries requires removing the two screws that hold the battery compartment cover in place in Step 1 of the setup procedure on page 6 After inserting fresh batteries in the correct orientation tighten the screws to secure the cover If the meter freezes like a computer and buttons become unresponsive try resetting the instrument by pushing the RESET button on its right side callout 1 15 of Fig 1 with the end of a paper clip Remove the batteries when storing this product for an extended period of time Do not drop or disassemble the instrument or immerse it in water OPTIONAL ACCESSORIES pH electrodes pH 4 pH 7 and pH 10 buffer solutions ORP electrode DO probe DO probe filling electrolyte e Spare DO probe and diaphragm set e ATC temperature probe e 9 VDC adapter for a 110VAC power supply WARRANTY INFORMATION General Tools amp Instruments Gene
8. 8 Reset button 1 19 RS 232 output jack 1 20 SD card socket SETUP 1 Choose the power source Before using the WK2017SD be sure it is powered by fresh batteries or an optional 9VDC AC adapter plugged into the bottom jack on its right side callout 1 15 To remove the battery compartment cover remove the two screws holding it in place callout 1 11 Then install six AA batteries in the correct orientation using the polarity marks on the inside of the compartment as a guide Replace the cover by replacing the two screws 2 Install an SD card To prepare for setup also install the supplied 2 GB SD memory card or another card with a capacity from 1 GB to 16 GB capacity in the socket on the bottom of the meter callout 1 18 When installing the card make sure its gold contacts are facing front and push the card into the socket until you hear a click To remove the card push it in until you hear a click and the card pops out Now power on the instrument by pressing the POWER button callout 1 2 to generate a short beep To power off the WK2017SD press the POWER button and hold it until the instrument responds with a long beep When the meter powers on a series of transient startup screens will briefly appear Once the display has stabilized perform the following 13 setup steps in the order presented 3 Format the SD card The first step in the setup procedure determines whether or not to format the SD memory card plugged i
9. GENERAL WK2017SD USER S MANUAL pH ORP CONDUCTIVITY TDS SALT AND DO METER WITH DATALOGGING SD CARD Please read this manual carefully and thoroughly before using this product TABLE OF CONTENTS 3 Key Features 4 Operating Instructions 4 16 What s in the case 4 5 ji 6 8 Calibrating a pH Electrode 8 9 Calibrating the Conductivity TDS Saltt 10 Calibrating an Oxygen Probe 10 11 Normal Operation 12 14 Holding and Storing Measurements 15 Automatic vs Manual Datalogging 15 16 Transferring Data from the SD Card to a Computer 16 Specifications 17 Maintenance amp Troubleshooting Tips 18 Optional 50 18 Warranty Information 19 Return for Repair Policy 19 INTRODUCTION Thank you for purchasing General Tools amp Instruments WK2017SD pH ORP Conductivity TDS Salt and DO Meter with Datalogging SD Card Please read this user s manual carefully and thoroughly before using the instrument The WK2017SD is a general purpose handheld instrument capable of measuring the pH oxidation reduction potential ORP or conductivity of a solution as well a
10. NS WHAT S IN THE CASE The WK2017SD comes fully assembled in a hard carrying case along with a conductivity TDS salt probe a 2 GB SD card and this user s manual Optional accessories available from General Tools amp Instruments include e pH electrodes A probe for automatic temperature compensation ATC of pH electrodes A DO probe e pH 4 and pH 7 buffer solutions e A 1 413 uS microSiemens standard conductivity solution A probe filling electrolyte A spare DO probe and diaphragm set e A 9VDC adapter for a 110V power supply See the Optional Accessories section of this manual for more details Figure 1 shows all of the controls and indicators on the front back top bottom and right side of the WK2017SD Familiarize yourself with the positions and functions of these controls indicators and connectors before moving on to the setup procedure 1 16 1 15 FRONT Fig 1 The WK2017SD s controls and indicators and other physical features 1 1 Liquid crystal display 1 2 POWER button 1 3 HOLD ESC button 1 4 REC ENTER button 1 5 A button 1 6 V button 1 7 TIME button 1 8 LOGGER SET button 1 9 Kickstand 1 10 Battery compartment cover 1 11 Battery compartment cover screws 1 12 Tripod attachment nut 1 13 Socket for ATC temperature probe 1 14 Socket for oxygen probe 1 15 Socket for conductivity TDS salt probe 1 16 Socket for pH electrode with BNC connector 1 17 Socket for 9VDC AC adapter 1 1
11. and then press the REC ENTER button to store that setting 6 Enable or disable auto power off Once the sampling time has been set and stored the display will show the word yES over the term PoFF Press the W button until the desired automatic power off management scheme yES for enable no for disable is displayed Press the REC ENTER button to store the selection If enabled the power off function shuts off the WK2017SD after a period of inactivity of ten minutes 7 Enable or disable the beeper Once the auto power off scheme has been chosen and stored the display will show the word yES over the word bEEP Press the W button until the desired setting yES or no is displayed and then press the REC ENTER button to store the selection as the default 8 Choose a decimal point or comma Once the beep sound has been enabled or disabled the display will show the word bASIC above the phrase The next step in the setup sequence determines whether displayed values use a period or a comma to represent the decimal division between integers and fractions for example American style 20 88 vs European style 20 88 Press the W button to make bASIC American style or Euro appear in the upper display as desired Press the REC ENTER button to store the selection as the default 9 Select the temperature unit Once the format of decimal point divisions has been set and stored th
12. asurement mode press the V button which has the word Function stenciled above it repeatedly until the term for the desired measurement mode appears 2 To measure the pH of a solution power on the meter and press the W button until the display shows the term PH Obtain a pH electrode and seat it firmly in the BNC socket callout 1 16 of Fig 1 on the top of the meter If an ATC temperature probe is being used make sure it is seated firmly in its socket callout 1 13 of Fig 1 on the top of the meter as well If an ATC probe is not being used perform Step 15 of the setup procedure to manually match the compensation temperature to the temperature of the solution being tested Following are the default states for the WK2017SD in pH measurement mode e The display shows Temperature unit of C e Manual temperature compensation Auto power off e Sampling time of 2 seconds To change any of these parameters use the specific procedure for it detailed earlier in the Setup section To make the pH measurement hold the pH electrode by its handle and immerse it in the solution under test If you are using the ATC temperature probe immerse its head in the solution as well Gently shake the electrode and probe if used to help any air bubbles escape and to ensure an accurate reading The display will simultaneously show the solution s pH in the center and either the manually selected compensation temperature or the actual tempe
13. asurements can be made automatically at any sampling rate between one second and nine hours After time stamping and storing the measurements on an SD card plugged into the meter a process called datalogging the user can remove the card and plug it into to a laptop or desktop computer either directly or via a USB card reader The data logs are stored on the card as files with the xIs extension which can be opened by Microsoft s Excel application The WK2017SD has a backlit 2 1 2 in diagonal display and is powered by six AA Alkaline batteries or an optional 9 VDC AC adapter KEY FEATURES Measures pH ORP and conductivity and TDS salt and DO content using included and optional electrodes and probes Measured parameter can be changed by pressing front panel buttons e DO measurements can be compensated for salt altitude and temperature Also measures oxygen content of a volume of air Optional ATC probe automatically temperature compensates pH electrode Displays maximum and minimum readings e Performs real time automatic datalogging at sampling time settable from 1 second to 9 hours Also supports manual logging and changing of card storage location Outputs Excel compatible data logs Accepts SD memory cards of up to 16 GB capacity Big 2 5 in diagonal front panel green backlit LCD is easy to read Auto power off function Powered by six AA batteries or optional 9V AC DC adapter OPERATING INSTRUCTIO
14. ation procedure using other standard conductivity solutions of appropriate strength If you do General advises performing the above procedure for a 2 ms full scale range first CALIBRATING AN OXYGEN PROBE An optional oxygen probe must be calibrated before you use it for the first time and again after a long period weeks or months of sitting idle General also recommends calibrating an oxygen probe before making any measurements that must be extremely precise Before beginning the calibration procedure make sure that the oxygen probe is full of fresh electrolyte Use the following steps while referring to Fig 3 below either to fill the probe with electrolyte or to replace old electrolyte with fresh electrolyte 1 Unscrew the probe head from the probe handle 2 Empty and dispose of any residual electrolyte from the probe head s reservoir 3 Pour fresh electrolyte into the reservoir 4 Screw the probe head back into the probe body Fig 3 How to fill an oxygen probe s head with electrolyte PROBE PLUG N Fig 3 n P N i i my fy LI L PROBE FILLING ELECTROLYTE fi PROBE HANDLE z L B _ Fig 4 To calibrate an oxygen probe use the following procedure 41 while referring to Figures 1 and 4 49 Fig 4 An oxygen probe s main components 4 1 Probe plug 4 2 Probe handle 4 3 Temperature sensing metal 43 4 4 Probe cap 4
15. ciled below it repeatedly until the desired range appears The options are 200 uS 2 mS 20 mS and 200 mS If the display shows a reading other than zero before the probe is inserted in the solution to be tested press the A button and hold it for at least 10 seconds until the display reads zero this zeroing function only works in the 200 uS full scale range and only when the original non zero value that appears is less than 2 uS To make the conductivity measurement hold the conductivity probe by its handle and immerse it in the solution under test Gently shake the head of the probe to help any air bubbles escape and to ensure an accurate reading The display will show both the conductivity of the solution in uS or mS and its temperature 5 To measure the TDS content of a solution power on the meter and press the W button until the display shows the term Cd indicating operation in conductivity measurement mode Then press the press the W or A button until the term tdS appears Next press the REC ENTER button to store the setting as the temporary default Finally plug a conductivity TDS salt probe into its dedicated socket callout 1 15 of Fig 1 on the top of the meter To make the TDS measurement hold the conductivity probe by its handle and immerse it in the solution under test Gently shake the head of the probe to help any air bubbles escape and to ensure an accurate reading The display will show both the TDS of the solution
16. e lower portion of the display will show the term t CF Press either the or A button to change the letter displayed at the right of the display to for Celsius units or F for Fahrenheit units as desired Then press the REC ENTER button to store the selection as the default 10 Set the optional DO probe s level of compensation for salt in the solution when operating in DO measurement mode The default value is 0 by weight The level of compensation is adjustable between 0 and 50 Once the display temperature unit has been set and stored the lower portion of the display will show the term SALt Press either the W A button repeatedly until the value above SALt matches the desired compensation level Press the REC ENTER button to store the setting 11 Compensate for altitude in metric units when operating in DO measurement mode The default value is 0 meters sea level The level is adjustable from 0 to 8 900 meters Once the salt compensation level has been set and stored the lower portion of the display will show the term High Press the W or A button repeatedly until the value above High reflects your altitude in meters Press the REC ENTER button to store the setting 12 Compensate for altitude in English units when operating in DO measurement mode The default value is 0 ft sea level The level is adjustable from 0 to 29 200 ft Once the altitude compensation level in meters has been
17. ed value of any parameter press the HOLD ESC button during the measurement Doing so will cause the word HOLD to appear at the top of the display Pressing the HOLD ESC button again releases the hold 2 To record and recall readings press the REC ENTER button while making measurements This will make the term REC appear at the top of the display Pressing the REC ENTER button again briefly will make the term MAX appear to the right of REC and switch the display to the maximum value stored in memory during the last recording session Pressing the REC ENTER button again briefly will make the term MIN appear to the right of REC and switch the display to the minimum value stored during the last session 3 To exit recording mode press and hold the REC ENTER button for at least three seconds until the term REC disappears from the top line of the display The display will then revert to showing the current reading AUTOMATIC VS MANUAL DATALOGGING The WK2017SD can automatically log data at a user selected sampling period from 1 second to 9 hours To view the sampling time that the instrument has been set up to use press the LOGGER SET button which has the words Sampling check stenciled below it once To change the sampling time perform Step 5 of the setup procedure 1 To start automatic datalogging press the REC ENTER button once The top line of the display will then show the term REC
18. edly until the value above t Set matches the desired compensation temperature Press the REC ENTER button to store the setting The display will then either return to the first of the 13 steps in the setup sequence choosing whether or not to format the SD memory card or show the term ESC If ESC appears press either the HOLD ESC button or the LOGGER SET button to exit the setup procedure and enter normal operating mode CALIBRATING A pH ELECTRODE The optional pH electrode you are using must be calibrated before making pH measure ments with it for the first time The electrode also should be calibrated whenever you wish to maximize the accuracy of measurements Calibration is necessary because not every pH electrode is an ideal electrode that generates 0 mV at pH 7 and 177 4 mV at pH 4 To calibrate a pH electrode perform the following procedure while referring to Figure 2 Fig 2 Calibrating a pH electrode using the buffer solution PEN 2 1 Electrode plug i 3 2 2 Electrode handle 2 3 Electrode head 2 4 pH buffer solution i C 1 Insert the plug of a pH electrode into the BNC socket at the top of the meter callout 1 16 of Fig 1 2 Power on the meter by pressing the POWER button 22 4 3 Using Step 15 of the setup procedure manually adjust the compensation temperature so it matches the temperature of the buffer solution Alternatively use an ATC temperature probe to make the adjustment automatically
19. n of our Service Center at this address General Tools amp Instruments 80 White Street New York NY 10013 212 431 6100 Remember to include a copy of your proof of purchase your return address and your phone number and or e mail address Specialty Tools amp Instruments GENERAL TOOLS amp INSTRUMENTS 80 White Street New York NY 10013 3567 PHONE 212 431 6100 FAX 212 431 6499 TOLL FREE 800 697 8665 e mail sales generaltools com www generaltools com WK2017SD User s Manual Specifications subject to change without notice 2010 GENERAL TOOLS amp INSTRUMENTS NOTICE WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS MAN WK2017SD 12 03 10
20. nto the instrument Press the LOGGER SET button callout 1 8 and hold it for at least five seconds until Sd F appears in the lower half of the display Quickly within three seconds press the REC ENTER button If you press buttons too slowly in setup mode the screen will revert to the normal display To return to the setup sequence press and hold the LOGGER SET button again To move ahead to the next field in the sequence or to the next parameter press the HOLD ESC button Pressing the REC ENTER button causes the word no or yES to appear over the term Sd F Press the W button to make a selection Choose yES whenever a new SD card is being used or when a used card is being repurposed from use with another SD card instrument or a camera for example and all data on it is to be erased Choose no to preserve any data on a card previously used with this instrument If you choose yES after you press the REC ENTER button the instrument will prompt you to confirm that decision by displaying the term Ent below yES and sounding three beeps To confirm that you want to begin the erasure formatting procedure press the REC ENTER button Ent will then flash several times and the meter will sound another three beeps to confirm that the SD card has been erased and formatted 4 Set the date and time Once the SD card has been formatted the meter will automatically move to the next step in the star
21. ral s WK2017SD pH ORP Conductivity TDS Salt and DO Meter with Datalogging SD Card is warranted to the original purchaser to be free from defects in material and workmanship Subject to certain restrictions General will repair or replace this instrument if after examination the company determines it to be defective in material or workmanship for a period of one year This warranty does not apply to damages that General determines to be from an attempted repair by non authorized personnel or misuse alterations normal wear and tear or accidental damage The defective unit must be returned to General Tools amp Instruments or to a General authorized service center freight prepaid and insured Acceptance of the exclusive repair and replacement remedies described herein is a condition of the contract for purchase of this product In no event shall General be liable for any incidental special consequential or punitive damages or for any cost attorneys fees expenses or losses alleged to be a consequence of any damage due to failure of or defect in any product including but not limited to any claims for loss of profits RETURN FOR REPAIR POLICY Every effort has been made to provide you with a reliable product of superior quality However in the event your instrument requires repair please contact our Customer Service to obtain an RGA Return Goods Authorization number before forwarding the unit via prepaid freight to the attentio
22. rature of the solution as measured by the ATC probe below it By default the temperature reading will be in C unless F has been selected 3 To measure the ORP of a solution power on the meter and make sure that it is operating in pH measurement mode Then press the W or A button to make the display show the term mV Next obtain an ORP electrode with a BNC connector and plug it into the same socket on the top of the meter callout 1 16 of Fig 1 that accepts the plug of a pH electrode Holding the ORP electrode by its handle immerse it in the solution under test Gently shake the head of the electrode to help any air bubbles escape and to ensure an accurate reading The display will show the ORP of the solution in mV 4 To measure the conductivity of a solution power on the meter and press the W button until the display shows the term Plug the conductivity TDS salt probe into its dedicated socket callout 1 15 of Fig 1 on the top of the meter Following are the default states for the WK2017SD in conductivity measurement mode e The display shows Cd Temperature unit of C e Temperature compensation factor of 2 per C e Autoranging on e Auto power off e Sampling time of 2 seconds To change any of these parameters use the specific procedure for it detailed in the Setup section To exit autoranging mode and manually enter a full scale measurement range press the W button which has the word RANGE sten
23. rature on the lower display 4 Rinse the probe head with tap water after each measurement 5 Replace the probe head protection cover A DO measurement tip Agitating a liquid reduces the effect of measurement errors caused by oxygen diffusing into it from ambient air At a minimum this can be done by shaking the probe while it is immersed To minimize measurement errors of this type General recommends using a magnetic agitator especially in laboratory settings 8 To measure the oxygen content of a volume of air first make sure that the oxygen probe to be used is full of fresh electrolyte and recently calibrated Power on the meter and press the W button until the display shows the term do indicating operation in DO measurement mode Then press the W button again to make the display read 02 instead of mg L Wait at least five minutes until the display reading stabilizes To return to mg L readings press the W button again Whenever the WK2017SD is in any measurement mode you can turn off the backlight which is on by default by briefly pressing but not holding the POWER ESC button To reactivate the backlight briefly press the button again Whenever the instrument is in any measurement mode you also can check the current date and time by briefly pressing the TIME button Doing so causes both values to appear briefly at the lower left of the display HOLDING AND STORING MEASUREMENTS 1 To hold a measur
24. ro and their locations on the card can be changed 5 To change the storage location C D E F of manually logged data press Peszen Date T Ch Vase Cl Unt Oh vase Ch wit the W button once this causes the 2 99m DX til To Duc to disappear from the left side 5 2 99m bis 52 as Mol Dies C ofthe display and the value on its 7 i Stee n s Bt Dague 2 1 5 29d 12 12 42 732 uS 747 Dears C line to begin flashing Once the 4 0000812 1212 Bd 147 C flashing begins you use the 6 20000817 15 12 46 BS as 745 Dears C and A buttons to change the 2000817 151248 Ba as 745 Deges C flashing value to any number 3 B z9912 11650 74 6 747 Degre C between 1 and 99 have 5 9m 5 2000812 15 1 13 24 3 Degree chosen the storage location press n u zom m peer the REC ENTER button to save the setting This causes the value to stop flashing and the p to return Fig 5 Typical Excel data only screen 6 To end manual datalogging press the REC ENTER button and 36 Ei 12 200942 131658 732 6 74 2 Dear C hold it for at least three seconds BS This action causes the REC 134 message to disappear from the 743 top line of the display 132 ps TRANSFERRING DATA FROM THE SD CARD E TO A COMPUTER Ui 2 5 Y P y datalogging of measurements remove the SD card from the meter eS ee OE a a
25. s its TDS total dissolved solids DO dissolved oxygen or salt content Using an included conductivity TDS salt probe an optional DO probe and optional ORP and pH electrodes the meter can measure pH from 0 to 14 ORP from 1999 mV to 1999 mV conductivity up to 200 mS milliSiemens TDS up to 132 000 ppm DO up to 20 mg L and salt content up to 12 by weight The meter also accepts an optional automatic temperature compensation ATC probe that configures a pH electrode to measure solutions at temperatures between 32 and 150 F 0 and 65 For measuring the pH of solutions at temperatures between 32 and 212 F 0 and 100 C the temperature compensation can be set manually pH electrodes must be calibrated for pH 4 pH 7 and pH 10 using buffer solutions as do conductivity TDS salt probes and oxygen probes using their own standard solutions Among the applications and environments suitable for the WK2017SD are water conditioning wastewater monitoring beverage production aquaculture fish farming aquariums pulp and paper processing electroplating and photography The WK2017SD has the performance and features needed to satisfy the most demanding aspects of the above applications A front panel pushbutton enables rapid switching among the meter s four measurement modes Because it is microprocessor based the WK2017SD can make full use of the portability reliability and large storage capacities that SD memory cards offer Me
26. set and stored the lower portion of the display will show the term Highf Press the W or A button repeatedly until the value above Highf reflects your altitude in feet Press the REC ENTER button to store the setting 13 Compensate the conductivity TDS salt probe for temperature The default value is 2 per degree C The value is adjustable from 0 to 5 per degree C Once the altitude compensation level in feet has been set and stored the lower portion of the display will show the term PEr C Press the W or A button repeatedly until the value above PEr C matches the desired temperature compensation level Press the REC ENTER button to store the setting 14 Choose conductivity uS or mS or TDS ppm units Once the temperature compensation level in conductivity measurement mode has been set and stored the lower portion of the display will show the term tDs Press the W or A button until either the term Cd or 105 appears above it Then press the REC ENTER button to store the setting as the default 15 Set the compensation temperature for the pH electrode when the meter is operating in pH measurement mode without an ATC probe The default value is 77 F 25 C The compensation temperature can be set anywhere between 32 and 212 F 0 and 1009C Once the units of conductivity measurements have been set and stored the lower portion of the display will show the term t Set Press the W or A button repeat
27. tup sequence setting the current date and time When the word dAtE appears in the center of the display along with the flashing value 00 00 00 at the lower left above yy mm dd set the current year by pressing the V or A button repeatedly until the correct value appears above yy Press the REC ENTER button to store the setting The next screen that appears will have the value above mm flashing Use the or A button to navigate to the current month and press the REC ENTER button to store the setting When the next screen flashes the value above dd again use the W or A button to navigate to the current day and press the REC ENTER button to store the setting Once you have set the date the display will prompt you to set the hour minute and second of the current time Again use the W or A buttons to navigate to the correct values and the REC ENTER button to store the settings 5 Set the datalogging sampling time Once the date and time have been set and stored the display will show a value below the letters SP t Press the W or A button to decrease or increase the flashing hour value until the desired number appears below SP t Press the REC ENTER button to store that setting The minutes value will then flash Press the W or A button to decrease or increase the value and then press the REC ENTER button to store that setting Finally press the W or A button to decrease or increase the flashing seconds value
28. ufficient to calibrate the supplied conductivity TDS salt probe so it accurately measures all three parameters 1 Obtain the correct standard conductivity solution s for the full scale range s you expect to use For example if you expect to measure conductivity values using a full scale range of 2 mS use a 1 413 mS standard conductivity solution For measurements within the 200 uS full scale range obtain and use an 80 uS standard solution 2 Plug the probe into its dedicated socket on the top of the meter callout 1 15 of Fig 1 Then power on the meter and push the W button which has the word MODE stenciled above it until the display shows the term Cd 3 To perform the calibration immerse and shake the head of the probe in the standard solution The display will show its conductivity in units of uS or mS 4 Once a value is displayed use two fingers to press the REC ENTER and HOLD ESC buttons simultaneously 5 When this screen appears release both fingers Then press the REC ENTER button The display will then switch into a two level Cd upper and lower mode that looks like this CAL 1 318 gt 1 41 Standard value 1 318 1 318 6 Press the V or A button to raise or lower the measured value until it matches the standard conductivity value 7 Complete the calibration procedure by pressing the REC ENTER button If you expect to make conductivity readings using other full scale ranges you should repeat this calibr
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