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Chart (7-2)

Solution

Temperature compensation coefficient

NaCl salt solution

2.12%/℃

5%NaOH solution

1.72%/℃

Dilute ammonia solution

1.88%/℃

10% hydrochroric acid solution

1.32%/℃

5% sulfuric acid solution

0.96%/℃

7.4.5.The other parameters setting, please see the chart (7-3)

7.4.6.

Special attention: when the content of parameter setting is

consistent with content of factory default setting, conductivity

measuring interface will display as picture (6-1); when the

content of parameter setting is different with content of factory

default setting, conductivity measuring interface will display as

picture (6-2); the code icon will appear on the upper right of

LCD, when parameters with code icon to be set more than two,

LCD just displays one of the codes; user should enter the

parameter setting and carefully check the contents of setting or

restore the meter to factory default setting and set up the parameters again.

7.5

Parameter Setting:

7.5.1. Conductivity parameter setting (chart (7-3))

Chart (7-3)

Prompt Mark

Parameter Setting Items

Code

Parameter

Standard solution series

selection

7.6

USA (84μS/cm, 1413μS/cm, 12.88
mS/cm, 111.9 mS/cm)

(146.6μS/cm,

1408μS/cm,

12.85mS/cm, 111.3mS/cm)

Electrode constant selection

0.1, 1, 10

Benchmark temperature

selection

25℃ 20℃ 18℃

Picture (6-1)

Picture (6-2)

Содержание WS200

Страница 1: ... 1 WS200 Fluoride pH Conductivity 7 in 1 Portable Meter Kit Instruction Manual APERA INSTRUMENTS LLC www aperainst com ...

Страница 2: ...ride concentration measurement 7 4 1 Preparation 7 4 2 Calibration mg L for example 7 4 3 Sample Measuring 8 4 4 Parameter settings 8 4 5 Special Notes 8 5 pH Measurement 9 5 1 Preparing the Meter 9 5 2 Meter Calibration 9 5 3 Sample Test 11 5 4 Parameter Settings 11 5 5 Special Notes 14 5 6 The Self diagnose Information 16 6 mV Measurement 16 6 1 Sample Test 16 7 Conductivity Measurement 17 7 1 P...

Страница 3: ...1 ion electrode contains ion selective electrode reference electrode and temperature electrode This design generates quick stability fast response and is easy to use no need for stirring or added reagents directly measuring the ion concentration of fluoride in a quick and simple manner directly measure the fluoride concentration with three different units mg L ppm and pF 1 3 Features of pH measure...

Страница 4: ...racy 0 01 pH 1 digit Temperature Compensation Range 0 100 Automatic 2 3 mV Measuring range 1999mV 0 1999mV Resolution 1mV Accuracy 0 1 FS 2 4 Conductivity Measuring Range Conductivity 0 00 19 99 μS cm 20 0 199 9 μS cm 200 1999 μS cm 2 00 19 99 mS cm 20 0 199 9 mS cm TDS 0 100 g L Salinity 0 100 ppt Resistivity 0 100 MΩ cm Resolution 0 01 0 1 1μS cm 0 01 0 1 mS cm Accuracy 1 0 F S ATC Range 0 50 Au...

Страница 5: ...ertification ISO9001 2000 CE and CMC IPClass IP57 Dustproof and waterproof 3 Instrument Description 3 1 LCD Display Parameter mode Measuring value Measured value storage and display of numbers symbols indicate M Store Measured value RM Recall measurement values Icon Measurement unit Temperature measurement and unit Smiley face icon indicates stable readings Instrument calibration indicator Low bat...

Страница 6: ...to make the meter enter into measuring state c When in pH measuring mode press this key to change resolution simultaneously 0 01 0 1 pH d When in Conductivity measuring mode press this key to change parameter simultaneously TDS SAL RES COND e When in Ion measuring mode press this key to change parameter mode simultaneously mg L ppm pX 3 2 5 The combination key of memory storage and recall memory a...

Страница 7: ...vate the electrode in 19 00mg L calibration solution for about 10 20 minutes as long as the smiley face icon stays stably on the screen before calibration and measurement Please note that the display value during activation is random 4 2 Calibration mg L for example 4 2 1 Press LCD displays 0 19 mg L and LCD top right corner CAL and the bottom left L will be flashing indicating that the meter has ...

Страница 8: ...Parameter sets the project Code Parameters P1 Temperature unit selection P2 Backlight display time setting 0 1 3 6 min P3 Auto power off time setting 0 10 20 min P4 Restore to factory default settings OFF ON 4 4 1 Temperature units c ºf selection P1 Long Press to enter P1 remaining operations see section 5 4 5 4 4 2 Backlight display time setting P2 In P1 long press to enter P2 remaining operation...

Страница 9: ... selective electrode the smaller the difference of temperature between test solution and the calibration solution the higher the measument accuracy is Typically temperature difference between test solution and calibration solution should 15 for high accuracy measurement the temperatures should be the same 4 5 6 When test is completed dry electrode and store with the cap on 4 5 7 When the meter is ...

Страница 10: ...ey face icon to appear and stay then again press the LCD will show a blinking 10 01 pH A stable reading and L M H calibration icons will be displayed see picture 4 1 indicating the three point calibration has been finished and the meter automatically returns to measuring mode 5 2 5 Notes a This meter can perform one point two point or three point automatic calibrations After the first point calibr...

Страница 11: ...rinciple According to the theory of Isothermal measurements the smaller the difference of the temperatures between test solution and the calibration solution the higher the measument accuracy is Typically temperature difference between test solution and calibration solution should 15 for high accuracy measurement the temperatures should be the same 5 4 Parameter Settings 5 4 1 pH measuring paramet...

Страница 12: ...n to measuring mode 5 4 3 Purified water pH temperature compensation setting P2 a Short press key in the mode P1 the meter enters mode P2 see picture 4 3 b Press or to choose ON or OFF c Press key to enter next parameter setting or press key to confirm and return to measuring mode d The default setting is OFF Note A PU 1 icon will appear in the upper right corner of the LCD if purified water tempe...

Страница 13: ...g mode 5 4 6 Backlight display time setting P5 a Short press key in mode P4 to enter mode P5 see picture 4 6 b Press or key to choose the time of back light auto power off 0 min 1 min 3 min or 6 min The back light display function will be closed if choosing a 0min c Press key to enter into next parameter setting or press key to confirm and return to measuring mode d The producer setting for P5 is ...

Страница 14: ...electrode hasn t been used for a long time or a new electrode is connected b After measuring strong acid pH 2 or strong base pH 12 solutions c After measuring fluoride containing solution and strong organic solution d There is a significant difference between the temperature of the test sample and the temperature of the buffer solution that is used in the last calibration 5 5 2 The soaking solutio...

Страница 15: ...he electrode will be getting passivated its sensitivity will decrease and its response is getting slow the reading are not correct Users could adopt the following methods to clean in various cases a Electrodes that have been used over a long period of time will become aged Submerge the electrode in 0 1mol L hydrochloric acid for 24 hours then rinse the electrode in distilled water then submerge it...

Страница 16: ...the measuring range There will also appear such signs when the electrode is not well connected with the meter or when the electrode is not immerged into the solution This is a normal phenomenon 5 6 2 Err1 Abnormal electrode zero potential 60mV or 60mV 5 6 3 Err2 Abnormal electrode slope 85 or 105 When Err1 or Err2 appears the meter can not work properly please take the following steps to check and...

Страница 17: ...l after stirring when a smiley face icon appears and stays press again LCD will display flashing 1413μS cm and End icon after a few seconds And the meter will return to measuring mode automatically Note 1 The meter s conductivity mode has been calibrated before leaving factory so generally users can use it directly 2 The conductivity can only can be calibrated under the mode of COND Resistivity RE...

Страница 18: ...Chart 7 1 Measuring range 0 05 to 20μS cm 0 5μS cm to 200mS cm Electrode constant K 0 1cm 1 flow test K 1 0cm 1 Calibration solution 84μS cm 84μS cm 1413μS cm 12 88 mS cm 111 9 mS cm Calibration indication icon 7 4 3 The temperature compensation coefficient of the meter setting is 2 00 by default However the conductivity temperature coefficient is different for different solutions Users can refer ...

Страница 19: ...ctivity measuring interface will display as picture 6 2 the code icon will appear on the upper right of LCD when parameters with code icon to be set more than two LCD just displays one of the codes user should enter the parameter setting and carefully check the contents of setting or restore the meter to factory default setting and set up the parameters again 7 5 Parameter Setting 7 5 1 Conductivi...

Страница 20: ...es c Press key to enter the next parameter setting or press key return to measuring mode 7 5 3 Electrode constant selection P2 a Under P1 mode to short press the key and enters P2 mode see picture 4 4 b Press or key to change the constant setting 0 1 1 0 10 0 c Press key to enter the next parameter setting or press key to return to measuring mode d The producer setting of P2 is K 1 7 5 4 Benchmark...

Страница 21: ...For example the 0 96cm 1 shown as picture 4 7 b Press or key to change number when the number is flashing and finish setting the constant that is marked on the housing of conductivity electrode c Press key to enter into the next parameter setting or press key to return to measuring mode d If need to do calibration for other conductivity electrode whose constant is not 1 such as conductivity electr...

Страница 22: ...store to producer setting P9 a Short press key in mode P8 to enter into mode P9 see picture 4 11 b Press or key to choose ON meaning that parameters have been restored to the default setting mode and restore to measuring mode after 2 seconds 7 7 Considerations 7 6 2 We recommend calibrating once every month under the normal circumstances It is necessary to calibrate the newly purchased conductivit...

Страница 23: ...0ml 1pc 8 7 Fluoride calibration solution 0 19ml L and 19mg L 50mL 1pc each 8 8 Screw driver 1pc 8 9 Spare AA batteries 3pcs 8 10 Operation manual 1pc 8 11 Carrying case 1pc 9 Warranty We warrant this instrument to be free from defects in material and workmanship and agrees to repair or replace free of charge at option ofAPERA INSTRUMENTS LLC any malfunctioned or damaged product attributable to re...

Страница 24: ...n Conversion Table APERA INSTRUMENTS LLC Address 6656 Busch Blvd Columbus Ohio 43229 Tel 1 614 285 3080 Email info aperainst com Website www aperainst com mol L pF mg L ppm 1 10 3 3 00 19 00 19 00 1 10 4 4 00 1 90 1 90 1 10 5 5 00 0 19 0 19 ...

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