WK7200 - General Tools And Instruments
Contents
1. WK7200 Manual FINAL M 1 8 15 08 11 52 AM Page 1 WK7200 USER S MANUAL ii GENERAL pH Cond Temp Water Quality Test Kit INTRODUCTION Thank you for selecting model WK7200 microprocessor based waterproof Water Quality Test Kit It is used to measure a wide range of pH ORP Conductivity TDS Salinity and Temperature with a replaceable electrode Please read and follow the manual carefully 3 WK7200 Manual FINAL 8 18 08 p4eyout 1 8 15 08 11 52 AM Page 2 mE FEATURES Large LCD displays Temperature along with either pH or ORP or Conductivity or TDS or Salinity simultaneously e Waterproof to IP 57 standard e t floats on water Automatic Temperature Compensation Degree F C switchable ico 8 and unit pH mV uS mS ppm ppt F for easy recognition while selecting function modes e Displays MIN MAX value and Data hold e Low battery indicator Automatically shuts off after 10 minutes of non useage Easy to replace Conductivity cell pH electrode or ORP electrode module SPECIFICATIONS p O Rm Range 32 to 194 F 0 to 90 C Accuracy D Resolution 0 01pH 1mV 0 1 F 0 1 C ATC 32 to 194 F 0 to 90 C Calibration 4 00 7 00 10 01 Conductivity Salinity Range 0 to 2000 uS 0 to 1000 ppm 2 00 to 20 00 mS 1 30 to 13 00 ppt 1 00 to 12 00 ppt Accuracy 0 4 F 1 digit 0 2 C 1 digit Res2. This certificate guarantees that this product has been inspected and tested in accordance with the published specifications The instrument has been calibrated by using equipment which is already calibrated to standards traceable to International standards Model WK7200 Serial no A V Date HBS 50085 50085 EEE A a o A EEEE_ OEE A EEEE_ CEE 5 505 50685 585 A a ESS Specialty Tools amp Instruments HSS 00605 SSS SSS SS SS SSS SS SS SSO SS HSS OSS OSS OSB OSS OOS OO BOOS OO SS OO SOO SSO 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 WK7200 User s Manual Specifications subject to change without notice 2008 GENERAL TOOLS amp INSTRUMENTS NOTICE WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS MAN WK7200 8 08
3. appears in the LCD display 2 Dip the conductivity cell into the standard solution 1413 uS cm Stir gently and wait until the display is stabilized Press and hold 5 button to enter calibration mode until the icon CAL appears in the display and flashes 1413 uS cm When the display stops flashing and indicates SA it will be followed by End while calibration is ending and then return to measurement mode 3 If reading is not 0 uS cm while the meter is in the air and is not dipped it into any solution then calibrate it in the air to make reading becomes 0 uS cm Note 1 Calibration with a 12 88 mS cm standard solution would be better for measuring high conductivity solution 2 The icon will appear automatically during calibration mode 3 SA will not appear if the calibration fails MEASUREMENT lt pH gt 1 After calibration rinse the electrode with clean water and wipe it dry Dip the electrode into Cp sample solution to be measured Stir gently and wait until a stable reading can be obtained D lt ORP gt 1 Insert ORP electrode and the icon will appear in the LCD display automatically 2 Calibration is not necessary for ORP But it could be tested with a specific ORP solution to check if the electrode is good or bad 3 Rinse the electrode with clean water and wipe it dry Dip the electrode into sample solution to be measured Stir gently and wait until a stable reading can be obtain
4. alibration mode FUNCTION MODE 1 Press button to select the desired measurement mode Conductivity TDS or Salinity during insert Conductivity cell 2 Press and hold button to change degree F or C m HOLD MIN amp MAX 1 Press button to enter Hold mode 2 Press and hold down button to enter Minimum Maximum mode Press button down lightly to get Minimum Maximum value 3 Press and hold down button again to exit this mode and return to measurement mode di WK7200 Manual FINAL 8 18 08 p4eyout 1 8 15 08 11 52 Page 5 OPERATING PROCEDURE ACCESSORIES Upon receiving the shipment inspect the container and equipment for any signs of damage Verify that you have received all the items listed below Meter Conductivity cell Buffer Solution pH 4 amp 7 Standard Solution 1413 S cm Soaking Solution Lanyard Battery installed Instruction manual Carrying case Optional ORP electrode PREPARATION 1 Remove the protective cap and unscrew soaking bottle pH ORP only from meter Rinse the electrode with clean water and wipe it dry Don t leak soaking solution from bottle and place the protective cap back on the bottle at the end of usage 2 Press button to turn the meter power on Note Don t touch or wipe the surface of the inner black sensor of the conductivity cell CALIBRATION lt pH gt 8 1 Make sure the sensor is pH electrode or check the icon shown the LCD display D 2 Dip th
5. e electrode into the buffer solution pH 7 Stir gently and wait until the display is stabilized Press and hold button to enter calibration mode until the icon CAL appears on the display and flashes 7 00 When the display stops flashing and indicates SA It will be followed by End while calibration is ending and then will return to measurement mode 3 Rinse the electrode with clean water and wipe it dry Dip the electrode into the b buffer solution pH 4 Stir gently and wait until the display stabilizes Press and hold 5 button to enter calibration mode until the icon CAL appears on the display and flashes 40 00 When the display stops flashing and indicates percentage of slope then SA It will then be followed by End while calibration is ending and then return to measurement mode 4 After slope calibration pH 4 or pH 10 the display will indicate percentage of slope PTS to show the status of electrode If the PTS is below 70 or above 130 the electrode must be replaced slope of 100 is ideal Note 1 Icon SA will not appear if the calibration fails 2 When doing a 2 or 3 point calibration Calibrate with buffer pH 7 first and then follow with buffer pH 4 or pH 10 di WK7200 Manual FINAL 8 18 08 p4eyout 1 8 15 08 11 52 Page 6 lt Conductivity gt 1 Make sure the sensor is Conductivity cell or check that the icon 100 or
6. ed Note 1 ___ _ will appear in the display when it is over the measuring range 2 After measurement rinse the electrode with clean water Place the protective cap and soaking bottle back on The soaking bottle should be always kept wet by adding soaking solution lt Conductivity gt 1 After calibration rinse the conductivity cell with clean water and wipe it dry Dip the conductivity cell into sample solution to be measured Stir gently and wait until a stable reading can be obtained 2 Press ED button to select the desired measurement mode Conductivity TDS or Salinity Note 1 __ _ _ will appear in the display when it is over the measuring range 2 The unit will auto range to uS cm or mS cm ppm or ppt 3 After measurement rinse the electrode with clean water and place the protective cap back di WK7200 Manual FINAL 8 18 08 p4eyout 1 8 15 08 11 52 FUNCTIONS MODE 1 Press CS button to enter the Hold function mode The icon HOLD will appear and the reading value shown in the display can be locked Return to measurement mode by pressing the button again 2 Press and hold button to enter the Maximum and Minimum function mode until the flash icon of MAX and MIN appears In the display The value of maximum and minimum will show in the display while pressing button lightly To exit this mode press and hold A button until icon MAX and MIN disappears and returns to measur
7. ement mode 3 Press em button to select the desired measurement mode Conductivity TDS or Salinity during insert Conductivity cell 4 Press and hold ED button to change Degree F or C Note 1 The display can not auto shut off under the status of MAX MIN mode 2 Change new batteries when the battery indicator is flashing MAINTENANCE BATTERY REPLACEMENT 1 Loosen the screw with a screwdriver on the battery compartment cap 2 Replace with fresh 4 AAA batteries and note polarity a 3 Place the battery compartment cap and tighten the screw Note 1 Be sure the batteries are in correct position by polarity 2 Don t loosen the O ring which has been mounted on ELECTRODE REPLACEMENT 1 Unscrew the electrode collar counterclockwise and remove it completely 2 Pull the electrode module out from the tester 3 Plug a new electrode module into the tester socket carefully 4 Place and tighten the electrode collar to make a good seal APPLICATIONS Agriculture e Anti freeze recycling Aquarium Boiler Chemical industry Cooling tower e Drinking water e Fish farming Food industry Garden husbandry Hydroponic Laboratory usage e Plating industry Swimming pool amp Spa Water treatment di Page 7 WK7200 Manual FINAL 8 18 08 p4eyout 1 8 15 08 11 52 Pad je 8 QC WE E UR UR WE SS A E Ru Calibration Certificate
8. olution 1 u 0 01ms 1 ppm 0 01ppt 1ppm 0 01 ppt ATC 32 to 122 F 0 to 50 C Calibration 0 uS 1413 pS 12 88 mS Power Source 4 AAA batteries Meter 7 7 x 1 6 x 1 4 195 x 40 x 36mm Kit 9 1 x 8 1 x 2 230 x 205 x 50mm Meter 4 8 oz 135 g with battery Kit 27 5 oz 780 g di WK7200 Manual FINAL M 1 8 15 08 11 52 AM Page 3 DEVICE DESCRIPTION Lanyard Connection Battery Compartment Cap 0 mm GENERAL Main Display Hold MIN amp MAX Button T Function Mode Button Power Calibration pH Electrode Button Module Soaking Bottle Electrode Collar Protective Electrode Module Sensor Sensor Protective WK7200 Manual FINAL 8 18 08 p yout 1 8 15 08 11 52 AM Page 4 DISPLAY DESCRIPTION mgl op n PURI Measuring mee Calibration b WI l ti X mode l Value nA N A li Function Mode Maximum Battery WAX CAL e Temperature t Li indicator consumption MIN HOD 4 Late Automatic u y Temperature Minimum value Compensation Hold reading FUNCTIONS OF KEYBOARD POWER CALIBRATION 1 Press button to switch power On or Off 2 Press and hold button to enter c
Download Pdf Manuals
Related Search