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iSTEK NeoMet 29D, Инструкция по эксплуатации

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18 

 
 
The  following  table  is  a  typical  temperature  coefficients  (percentage  of  change  of 
conductivity per).   
 

Solution 

% /

C

℃

 

Ultra pure Water 

4.55 

Salt(NaCl) 

2.12 

5% NaOH 

1.72 

Dilute Ammonia 

1.88 

10% HCl 

1.32 

5% Sulfuric Acid 

0.96 

98% Sulfuric Acid 

2.84 

 

Cell Constant 

 
For  conductivity  measurement  of  a  solution,  can  accurately  measure  by  adjusting  cell 

constant.   
Cell  constants  consist  of  0.01,  0.1,  1.0,  10  and  100,  and  set 
by using 

 or 

 key. 

 
 
 
 
 
 

 
 
 

Standard Solution 

 
After setting cell constant, press 

Setup

 key, and then the display is shown as follows. 

If  pressing 

Se`lect

  key,  conductivity  of  standard  solution 

(146.9

S,  1413

S,  6.67mS,  12.9mS,  111.9mS)  is  displayed 

in turn.   
If  using  standard  solution  that  not  showing  on  screen,  adjust 
conductivity by using 

 or 

 key.   

 
 
 
 
 
 

 
 
 
 
 
 

Chapter IV    Setup Functions 

 

 

 

 

   

 

         

 

                      N eo M et   

 

SETUP 

 
 

                   

1.0

 

             
 
 

 

 

SETUP 

 
 

                 

1413

 

               

S 

 
 

 

Содержание NeoMet 29D

Страница 1: ...NeoMet Portable pH ISE mV ORP DO O2 Air Conductivity TDS Salinity Temp Meter Model 79P 29D 47C 415CP 815PDC Instruction Manual istek Inc...

Страница 2: ...leaning 13 DO Polarographic Probe Structure 14 DO Probe Storage 14 DO Probe Maintenance Probe Cleaning 14 Conductivity Cell Storage 14 Conductivity Cell Maintenance Cell Cleaning 14 CHAPTER IV SETUP F...

Страница 3: ...ctivity TDS Salinity TEMP Meter 33 Calibration and Measurement 33 Salinity Mode 34 CHAPTER VI DATA LOG 35 Memory Data Log 35 CHAPTER VII TROUBLESHOOTING ERROR DESCRIPTION 36 pH ISE mV ORP TEMP Meter 3...

Страница 4: ...anual calibration simultaneously 3 points This model displays pH ISE mV ORP relative millivolt and ATC C pH indicates power of hydrogen H unit pH pH log10 H ISE indicates concentration of any given io...

Страница 5: ...Salinity ppt and ATC C Conductivity indicates conductivity of solution unit S cm and mS cm TDS indicates by converting the measured conductivity into concentration of the total dissolved solid present...

Страница 6: ...6 0 0 mg L ATC 25 0 C DO 0 0 ppt ATC 25 0 C COND If connecting DO probe the displays is shown as follows If Connecting Conductivity Cell the displays is shown as follows Chapter I Introduction NeoMet...

Страница 7: ...ck by sliding the connector straight on until firmly in place RS232C Interface Cable Connection Insert RS232C interface cable into the RS232C jack Use interface cable supplied by istek Power Source Us...

Страница 8: ...ge the resolution For pH choose 0 1 0 01 or 0 001 Setup used to access the setup menu This is used for setting instrument operating parameter for example Temperature and Data logging in pH Setup and I...

Страница 9: ...ir Resolution used to change the resolution For DO choose 0 1 or 0 01 Setup used to access the setup menu This is used for setting instrument operating parameter for example altitude salinity temperat...

Страница 10: ...0 01 auto range Setup used to access the setup menu This is used for setting instrument operating parameter for example temperature compensation coefficient cell constant compensation temperature sta...

Страница 11: ...d of calibration corresponding to number DATA 1 indicates number of data stored in meter Err Error displays when it is not available to correctly measure because something is wrong in the meter or buf...

Страница 12: ...gen as compared to the amount of oxygen presents in the air AIR INDICATES AIR MODE indicates percentage of DO concentration ALT displays in altitude setup ppt displays in salinity setup Conductivity T...

Страница 13: ...intenance Electrode Cleaning If it takes long time to response or a stable data isn t obtained can often be restored to normal performance by one of the following procedures Glass electrodes fail beca...

Страница 14: ...e cells that are immersed in deionized water Provided the cell has been stored in condition of drying should be soaked in distilled water for five to ten minutes before using to keep electrode wet Con...

Страница 15: ...nsmits data with time interval of one second This data can be taken by communication program or printer via RS232C interface cable When pH is 7 00 and temperature is 25 0 C the following figure is an...

Страница 16: ...If finishing setup press Out key exit setup mode DO O2 Air TEMP Meter DO Mode Setup Altitude In the initial display of DO press Setup key to enter Setup and then the display is shown as follows Adjust...

Страница 17: ...vity TDS Salinity TEMP Meter Conductivity Mode Setup Temperature Coefficient In the initial display of Conductivity press Setup key to enter Setup and then the display is shown as follows The conducti...

Страница 18: ...n can accurately measure by adjusting cell constant Cell constants consist of 0 01 0 1 1 0 10 and 100 and set by using or key Standard Solution After setting cell constant press Setup key and then the...

Страница 19: ...Press or key to change 25 0 or 20 0 The conductivity of a solution exhibits at 25 0 C or 20 0 C Data Log Setup Set by using or key When this setup is set on meter transmits data with time interval of...

Страница 20: ...ar data memory pH ISE mV ORP TEMP Meter If clearing all the stored data press Mode key to enter mV mode and then press Select key to clear Therefore all data which set at setup is changed to a basic v...

Страница 21: ...nect meter with electrode and ATC Prepare a calibration buffer and magnetic stirrer Calibration 1 Calibration of CAL1 Buffer 1 In the pH ready condition press Cal key and then the displays is shown as...

Страница 22: ...ading is stable S appears in the left field IF CALIBRATING WITH BUFFERS OTHER THAN 4 00 7 00 OR 10 00 ADJUST VALUE TO THE MEASURING BUFFER BY PRESSING THE OR KEY Press Cal key therefore automatically...

Страница 23: ...stable S appears in the left field IF CALIBRATING WITH BUFFERS OTHER THAN 4 00 7 00 OR 10 00 ADJUST VALUE TO THE MEASURING BUFFER BY PRESSING THE OR KEY Press Cal key therefore automatically set and...

Страница 24: ...appears in the left field While measuring you can also know millivolt by pressing Mode key The measured data is stored by pressing Memory key manually Refer to Data Log of Chapter VI Chapter V Calibr...

Страница 25: ...the lower concentrated solution to the more concentrated solution Calibration and Measurement 1 Calibration of CAL1 Buffer 1 In ISE ready condition press Cal key and then the set buffer in Setup is sh...

Страница 26: ...ing calibration is changed into the initial display automatically If pressing Cal key after calibrating 2 points change to the initial display Put electrode into sample and press Measure key The measu...

Страница 27: ...ate time of exchange of electrode since can know error through slope ISE Slope Press Slope key to confirm electrode slope after ISE calibration The slope displays in the main field and then disappeare...

Страница 28: ...en Measure key In addition while measuring pH you can also know millivolt by pressing Mode key Relative Millivolt Relative millivolt is displayed to 0 1mV resolution in the range of 1999 9 to 1999 9 m...

Страница 29: ...olution with oxygen by the bubbling equipment at least 1 2 hours in advance before calibration Put saturated solution into BOD bottle and cap to minimize the exposure in the air Zero Calibration There...

Страница 30: ...o minimize the exposure in the air Press Measure key If the reading is stable press Cal key And then Cal 2 OK message is displayed in the upper field and set automatically After finishing calibration...

Страница 31: ...hen Cal OK message is displayed in the upper field and set automatically This value is automatically adjusted in accordance with the selected altitude If finishing calibration automatically change to...

Страница 32: ...then Cal OK message is displayed in the upper field and set automatically This value is automatically adjusted in accordance with the selected altitude If finishing calibration automatically change to...

Страница 33: ...ey If finishing calibration automatically change to the initial display Clearly rinse electrode and put into sample and press Measure key If the reading is stable record or store it Refer to Data Log...

Страница 34: ...TDS is the same as for conductivity Press Mode key to enter TDS mode Press Measure key to measure TDS of solution While measuring conductivity measure TDS by pressing Mode key Salinity Mode Press Mod...

Страница 35: ...p to 50 points is stored in memory at once If the data stored in meter is required to print it is available to output by using printer supplied by istek In ready or measure condition enter Data Memory...

Страница 36: ...meter is correctly connected with electrode and ATC probe Buffer used may be out of specification Repeat calibration using a fresh buffer When trying to exit after calibrating only 1 point error messa...

Страница 37: ...rectly and polarity signs match Out of range reading or unstable reading Probe failure Clearly rinse electrode and blot dry If air bubble is occurred on membrane remove air bubble Check membrane for d...

Страница 38: ...ure Measure in situ Broken conductivity cell Replace cell Standards may be old or contaminated Use fresh standards When calibrating for standard solution conductivity is very high or low Electrodes di...

Страница 39: ...1 C 0 4 C 10 to 110 C 0 1 C 0 4 C DO Range Resolution Accuracy 0 0 to 19 99 mg L 0 01 0 1 0 5 1 0 to 19 99 mg L 0 01 0 1 0 5 O2 Range Resolution Accuracy 0 0 to 60 0 0 1 1 digit 1 0 to 60 0 0 1 1 dig...

Страница 40: ...800 0 1 B 56 2 2 5 11 0 50 30 Dbl NH4 2SO4 I SSM 1 0 5 10 8 127 000 0 006 57 2 0 14 0 80 20 Dbl KNO3 Pb 2 SSM 0 1 1 10 6 20 700 0 2 25 2 3 8 0 80 20 Dbl KNO3 Li PM 1 0 1 10 5 6 900 0 7 56 2 5 10 0 50...

Страница 41: ...obe Rechargeable 1 2V battery 6pcs pH Buffer Solutions pH4 00 7 00 10 00 125ml Instruction Manual B Option pH ORP DO ISE Conductivity cell Carrying Case Extra pH Buffer Solutions pH4 00 7 00 10 00 475...

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