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-2 0 - 

Standards m ay be old or   

contam inated 

U se fresh standards 

W hen calibrating, 

for standard solution 

conductivity is very   

high or low . 

Electrodes dirty 

C lean w ith a detergent   
solution. R efer to   

3. G eneral Functions 

 

Tem perature com pensation 

incorrect 

C heck tem perature. 

 

C ell constant incorrect 

R eplace cell 

 

If the cause can¡t know , clear m em ory(data) to elim inate all data.   
R efer to C lear M em ory(data) of Setup Functions. 

 

If the problem  persists, please contact 

istek P rod u ct S ervice D ep artm en t

. 

 
 
 
 
 
 
 
 
 

C h ap ter V III    T ro b lesh o o tin g  &  E rro r D escrip tio n  

C o n d u ctivity/T D S /S a lin ity/R esistivity/T em p  M eter                                                                                                               

 

 

C hapter IX . Specifications 

 
 

M odel 

455C  

C on du ctivity 

 

 

Range 

0 to 199,999 

S/cm  

 

Resolution 

0.01/0.1 

 

Relative Accuracy 

0.5%  

T D S  

 

 

Range 

0 to 1999 m g/L 

 

Resolution 

1 m g/L 

 

Relativie Accuracy 

2%  

S alin ity 

 

 

Range 

0.0 to 70.0 ppt 

 

Resolution 

0.1   

 

Relative Accuracy 

.0.1 

R esistivity 

5 ohm

cm  to 100 M ohm

cm  

Tem perature C om pensation 

Auto 

D ata-Log 

100 points 

Print C apability 

Yes 

Содержание 455C

Страница 1: ...Desktop Conductivity TDS Salinity Resistivity Temp M eter M odel 455C Instruction M anual istek Inc ...

Страница 2: ...y Function 4 Display Description 5 Electrode Storage and Maintenance 6 Chapter IV Setup Functions 7 10 Clear Data Memory 7 Chapter V Calibration and M easurement 11 14 Chapter VI Data Log 15 17 Chapter VII Remote Control 18 Chapter VIII Troubleshooting and Error Descriptions 19 Chapter IX Specifications 20 Chapter X Ordering Information 21 Table of Contents ...

Страница 3: ...c The model 455C is capable of storing up to 100 points in memory at once and storing by control of the time interval of data log automatically and can be remotely controlled via RS232C interface It is available to display unlimited number of each datalogging via Excel Software with graph including GLP documentation by using DAPS The model 455C displays Conductivity S mS TDS mg L Salinity ppt Resi...

Страница 4: ...ensor input then push down and turn clockwise to lock into position ATC Probe Connection Attach the ATC probe to the ATC jack by sliding the connector straight on until firmly in place Recorder Connection When the recorder is used connect the recorder to the meter Output voltage is 1999 9 1999 9 mV with impedance of 600 Printer and RS232C interface cable Connection Insert printer and RS232C interf...

Страница 5: ...rm the last calibration status Setup used to access the setup menu This is used for setting instrument parameters Can set Cell Constant Temperature Coefficient Temperature Compensation Date Time and Data Log Select used to move position of cursor used to measure conductivity without temperature compensation Enter used to set a selected data Memory used to store data in meter s memory while measuri...

Страница 6: ...it ppt Resistivity indicates resistivity of solution at a current temperature Temp C displays when a temperature probe is attached and indicates automatic temperature compensation Ready indicates that meter is in ready condition Measure indicates that meter is in measure condition 96 11 12 11 15 indicates a current date and time Tr 25 0 indicates that compensation of temperature is performed at 25...

Страница 7: ...aintenance Cell Cleaning Glease oil fingerprints and other contaminants on the sensing elements can cause erroneous measurements and sporadic responses If it takes long time to response or a stable data isn t obtained can be often restored to normal performance by using the following procedures Clean cells with detergent and or dilute nitric acid 1 by dipping or filling the cell with cleaning solu...

Страница 8: ... is shown as follows COND SETUP 1 Cell Tref TC 2 Date Time 3 Data Log 4 Exit Press M ode key TEMP SETUP 21 3 Set temperature by using or key and exit by pressing Out key Clear data Memory If clearing the stored data press M ode key to enter Salinity mode The display is shown as follows And then press Enter to clear Therefore all data which set at setup are changed to a basic value CLEAR M emory Cl...

Страница 9: ...stant 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 2 Tref 2 Tref has function to set compensation temperature 25 0 C or 20 0 C Cell Tref TC 1 Cell 1 0 2 Tref 25 0 3 TC 2 10 4 Exit Press or key to change 25 0 or 20 0 The conductivity of a solution exhibits at 25 0 C or 20 0 C 3 ...

Страница 10: ...r selecting 2 Date Time by using Select key press Enter key Select data year month day and time etc with Select key and adjust data by using or key DATE TIM E SET Current Time 96 11 26 13 36 36 Exit If finishing setup press Out key or select a displayed Exit to exit Date Time setup Data Log In the initial display of setup After selecting 3 Data Log by using Select key press Enter key And then the ...

Страница 11: ...nterval In order to store data to any Destination with certain select a desired time interval minutes or seconds by using or key DATA LOGGING 1 Destination M emory 2 Time Interval 0 min 3 Exit Unit of time interval such as minutes and seconds is changed by pressing Enter key Adjust time interval by using or key DATA LOGGING 1 Destination M emory 2 Time Interval 0 sec 3 Exit Time interval ranges fr...

Страница 12: ...ns function to confirm the last calibration status of conductivity 1 Conductivity Calibration Status In conductivity ready condition press Setup key and Cal key or in measurement condition press Cal key to enter Cond Calibration Status Cond Calibration Status 1 Date Time 98 03 26 17 30 2 Temp 18 0 3 Tref 25 0 4 Standard 146 9 uS cm Confirm Date Time temperature Temp and compensation temperature Tr...

Страница 13: ...ndition press Cal key to enter calibration mode The display is shown as follows and select standard solution by using Select key Cal Ready 146 9 uS 1413 uS 6 67 mS 0 00 uS cm 12 89 mS TEMP 18 0 Tr 25 0 111 9 mS Put cell into the selected standard solution and press M easure key Put cell into standard solution and press M easure key Cal Measure 146 9 uS 1413 uS 6 67 mS 143 6 uS cm 12 89 mS TEMP 18 ...

Страница 14: ...e calibration TC i e Temperature Compensation Coefficient is automatically selected by standard solutions and measuring temperature KCl solution have a lower temperature coefficient app 1 9 C of conductivity than typical potable water Sodium chloride NaCl has a temperature coefficient 2 12 C that closely approximates that found in most waters from wells and surface sources Press M easure key to me...

Страница 15: ...Salinity Measurement The preparation for salinity is the same as for conductivity Press M ode key to change salinity mode Press M easure key to measure salinity of solution Measure 96 11 12 11 15 0 7ppt Salinity TEMP 18 0 C While measuring conductivity or TDS can measure salinity by pressing M ode key 4 Resistivity Measurement The preparation for resistivity is the same as for conductivity Press M...

Страница 16: ... condition of Data Log is set as follows DATA LOGGING 1 Destination M emory 2 Time Interval 0 min 3 Exit The measured data is stored in meter by pressing M emory key manually If the condition of Data Log is set as follows refer to Setup the measured data is automatically stored with time interval of one minute in meter DATA LOGGING 1 Destination M emory 2 Time Interval 1 min 3 Exit Unit of time in...

Страница 17: ...press Out key to print data Chapter VI Data Log Conductivity TDS Salinity Resistivity Temp Meter The following figure is an example to print DATA MODE Number 3 Date Time 96 11 26 11 15 conductivity 1215 S Tref 25 0 C 3 Printer Data Log Connect meter to printer via RS232C interface cable supplied by istek If condition of Data Log is set as follows the measured data is automatically printed every on...

Страница 18: ... condition of Data Log is set as follows the measured data is automatically stored in PC with excel form every one minute DATA LOGGING 1 Destination Excel 2 Time Interval 1 min 3 Exit If DAPS Data Acquisition and Processing Software is performed the display of monitor as follows The installation method of DAPS refer to DAPS manual Chapter VI Data Log Conductivity TDS Salinity Resistivity Temp Mete...

Страница 19: ...board remotely controlled and key button of meter doesn t work Ready 96 11 12 11 15 0 0 uS cm Tr 25 0 2 10 C Remote Control TEMP 18 0 C When Remote control is started message Conductivity Remote Control Mode is displayed on the monitor of computer ISTEK Conductivity Remote Control Mode ISTEK If inputting help while performing communication program the remote control commands are displayed on the m...

Страница 20: ...ta Reading No If inputting Data Number the data stored in meter is displayed as follows This is also used by storing in screen capture or recording DATA MODE Number 3 Date Time 96 11 26 11 15 conductivity 1413 S Tref 25 0 C Chapter VII Rem ote Control Conductivity TDS Salinity Resistivity Temp Meter Chapter VIII Troubleshooting Error Description Symptom Possible cause Remedy Erratic reading Faulty...

Страница 21: ...Refer to Clear Memory data of Setup Functions If the problem persists please contact istek Product Service Department Chapter VIII Trobleshooting Error Description Conductivity TDS Salinity Resistivity Temp Meter Chapter IX Specifications Model 455C Conductivity Range 0 to 199 999 S cm Resolution 0 01 0 1 Relative Accuracy 0 5 TDS Range 0 to 1999 mg L Resolution 1 mg L Relativie Accuracy 2 Salinit...

Страница 22: ... Salinity Resistivity Temp Meter Chapter X Ordering Information Other items contact istek For further information on other accessories please feel free to contact istek at any time A Standard Conductivity Cell K 1 0 AC DC Adaptor Instruction Manual DAPS Data Acqusition and Processing Software B Option Luxury Third Arm Stand Conductivity Standard Solutions ...

Страница 23: ... 22 RS232C Interface Cable Chapter X Ordering Inform ation ...

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