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Using the Pro1030’s default reference temperature and temperature 
coefficient (25 °C and 1.91%), the calculation is carried out as follows:

Specific Conductance (25°C) = Conductivity of sample
 

 

 

           1 + 0.0191 * (T - 25)

T = Temperature of the sample in °C

specIfIc condUctance reference 

teMperatUre (spc ref. teMp.)

SPC Ref. Temp. (Specific Conductance Reference Temperature) is the 
reference temperature used to calculate Specific Conductance. The 
reference temperature range is 15 and 25°C. The default value is 25°C.  

To change the reference temperature, highlight SPC Ref. Temp. and 
press enter to open the submenu. With the reference temperature 
highlighted, press enter to make the field adjustable. Next, use the up 
or down arrow key to increase or decrease the value. Press enter to 
save the new reference temperature. Next, highlight the ESC-Exit box 
and press enter to close the submenu.  

specIfIc condUctance teMperatUre 

coeffIcIent (spc %/°c)

SPC %/°C (Specific Conductance Temperature Coefficient) is the 
temperature coefficient used to calculate Specific Conductance. The 
coefficient range is 0.00 to 4.00. The default value is 1.91% which is 
based on KCl standards. 

To change the temperature coefficient, highlight SPC %/°C and 
press enter to open the submenu. With the temperature coefficient 
highlighted, press enter to make the field adjustable. Next, use the up 
or down arrow key to increase or decrease the value. Press enter to 
save the new coefficient. Next, highlight the ESC-Exit box and press 
enter to close the submenu.

tds constant

TDS Constant is a multiplier used to calculate an estimated TDS (Total 
Dissolved Solids) value from conductivity. The multiplier is used to 
convert Specific Conductance in mS/cm to TDS in g/L. The Pro1030’s 
default value is 0.65. This multiplier is highly dependent on the nature 
of the ionic species present in the water sample. To be assured of 
moderate accuracy for the conversion, you must determine a multiplier 

for the water at your sampling site. Use the following procedure to 
determine the multiplier for a specific sample:

1.  Determine the specific conductance of a water sample from 

the site;

2.  Filter a sample of water from the site;
3.  Completely evaporate the water from a carefully measured 

volume of the filtered sample to yield a dry solid;

4.  Accurately weigh the remaining solid;
5.  Divide the weight of the solid (in grams) by the volume of water 

used (in liters) to yield the TDS value in g/L for this site; 

6.  Divide the TDS value in g/L by the specific conductance of the 

water in mS/cm to yield the conversion multiplier. Be certain to 
use the correct units.

If the nature of the ionic species at the site changes between sampling 
studies, the TDS values will be in error. TDS cannot be calculated 
accurately from specific conductance unless the make-up of the 
chemical species in the water remains constant.

To change the TDS Constant in the Pro1030, highlight TDS Constant and 
press enter to open the submenu. With the TDS Constant highlighted, 
press enter to make the field adjustable. Next, use the up or down 
arrow key to increase or decrease the value. The input range is 0.30 
to 1.00. Press enter to save the new TDS Constant. Next, highlight the 
ESC-Exit box and press enter to close the submenu. 

langUage

Highlight Language and press enter to open a submenu that allows 
you to change the language. Highlight the desired language (English, 
Spanish, Portuguese, or French) and press enter to enable. The enabled 
language will have an ‘X’ in the box next to it. Highlight ESC-Exit box and 
press enter to save any changes and to close the Language submenu.

The text in the boxes along the bottom of the Run screen will always be 
displayed in English regardless of the language enabled in the System 
Setup menu.  

aUto shUtoff

Auto Shutoff allows you to set the instrument to turn off automatically 
after a period of time. In the setup menu, use the up or down arrow 
keys to highlight Auto Shutoff, then press enter to open the submenu. 
Press enter while the minute field is highlighted to make it adjustable. 

Summary of Contents for YSI Pro1030

Page 1: ...USER MANUAL English Pro1030...

Page 2: ...First Power On 7 System Setup Menu 7 Audio 8 Contrast 8 Temperature Units 8 ISE Sensor Type 9 ISE Units 9 Auto Stable 9 pH Buffer Set 10 Conductivity Units Cond Units 10 Specific Conductance Reference...

Page 3: ...red by this warranty To exercise this warranty call your local YSI representative or contact YSI Customer Service in Yellow Springs Ohio at 1 937 767 7241 800 897 4151 or visit www YSI com for a Produ...

Page 4: ...pack the instrument and accessories and inspect for damage Compare received parts with items on the packing list If any parts or materials are damaged or missing contact YSI Customer Service at 800 89...

Page 5: ...u from the Run screen 2 Up Arrow Use to navigate through menus to navigate through box options along the bottom of the Run screen and to increase numerical inputs 3 Power and Backlight Press once to t...

Page 6: ...y 1 o ring visible Failure to properly seat the sensor may result in damage 6 Twist the sensor clockwise to engage the threads and finger tighten Do NOT use a tool This connection is water tight The I...

Page 7: ...System Setup menu the up and down arrow keys will move the highlighted bar up and down the system setup options See the System Setup menu section of this manual for more information about these option...

Page 8: ...ther pH model 1001 or ORP model 1002 Use the up or down arrow keys to highlight ISE Sensor Type then press enter to open a submenu Highlight the sensor type corresponding to the sensor installed on th...

Page 9: ...enter to enable or disable it An enabled conductivity unit will have an X in the box next to it Highlight the ESC Exit box along the bottom of the display and press enter to save any changes and to cl...

Page 10: ...e a multiplier for the water at your sampling site Use the following procedure to determine the multiplier for a specific sample 1 Determine the specific conductance of a water sample from the site 2...

Page 11: ...e and 10 seconds pH Buffer Set USA Conductivity Units cond mS cm and spc mS cm Parameter Reset Defaults Conductivity Auto Stable Off 0 0 Change and 10 seconds SPC Reference Temperature 25 C SPC Temper...

Page 12: ...hold Cal for three seconds 3 Highlight pH and press enter If pH is not listed as an option check the System Setup menu to ensure pH is enabled in the ISE Sensor Type menu 4 Highlight 3 point and pres...

Page 13: ...hloride when calibrating Specific Conductance since these solutions typically have a Temperature Coefficient of 1 91 C Additionally be sure to enter the value of the solution as it is listed for 25 C...

Page 14: ...ess the Cal key to exit the calibration error message and return to the Run screen See the Troubleshooting section of this manual for possible solutions Taking M easurements Before taking measurements...

Page 15: ...the data set number 01 through 50 Erasing Data While viewing saved data press the enter key to access the function boxes at the bottom of the display Next use the up or down arrow keys to highlight E...

Page 16: ...prevent water from entering the port Once the ISE sensor is removed examine the connector inside the port If any moisture is present use compressed air to completely dry the connector or let it air d...

Page 17: ...h all parts of the sensor tip without stress You can also use a pipe cleaner for this operation if more convenient i Dry the port and sensor connector with compressed air and apply a very thin coat of...

Page 18: ...displays Calibration Over Calibration Under or Unstable Reading during calibration 1 Ensure the conductivity sensor is clean Follow the cleaning procedures in the Care Maintenance and Storage section...

Page 19: ...uctivity 0 500 uS cm 0 5 mS cm 0 50 mS cm 0 200 mS cm auto ranging 0 0001 to 0 1 mS cm 0 1 to 0 uS cm range dependent Instrument only 0 5 of the reading or 1 uS cm whichever is greater Instrument with...

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