Ysi 3100 User Manual

YSI Model 3100ConductivitySalinityTemperatureInstrumentOperationsManualCµSCONDUCTIVITY INSTRUMENT

6 16.34 µS 24.8 °C3.3 Configure the 3100Before operating the 3100, or whenever you change cells, you must configure the 3100 to matchthe c

7 1.00 CAL4. Use the [UP ARROW] or [DOWN ARROW] keys to change the value to the desired new cellconstant. 0.10 CAL5. Press the [ENTER] k

8To choose one of the measurement modes (temperature is always displayed), simply press andrelease the [MODE] key. Carefully observe the small legends

93.5 Making MeasurementsAfter setting up the 3100 instrument and cell as described earlier, the following basic stepsshould be used to make measuremen

104. Advanced SetupFor highest accuracy, the 3100 and cell may be calibrated as a system using standard conductivitycalibration solutions. See the fol

114. Gently tap the cell to remove any air bubbles and dip the cell in the solution 2 or 3 times toensure proper wetting. If using a flow through or f

124.2 Temperature CoefficientFollow these steps to modify the temperature coefficient of the Model 3100.1. Press and release the [DOWN ARROW] and [MOD

13 The CAL symbol will appear at the bottom left of the display and the large portion of thedisplay will show 1.91% (or a value set previously using A

14NOTE: You may see an error message in some manual ranges if the range selected is notadequate for the sample you are measuring. rErr mS

155. Maintenance5.1 Cell Cleaning and StorageThe single most important requirement for accurate and reproducible results in conductivitymeasurement i

162. Press both the [UP ARROW] and [MODE] keys at the same time. The large portion of thedisplay will show “PLA” flashing, indicating that platinizati

176. TroubleshootingError MessagesThe instrument performs a Power On Self Test each time it is turned on. The following errormessages are provided to

18SYMPTOM POSSIBLE CAUSE ACTION8. Main Display reads “LErr”• In temperature compensatedconductivity mode, temperatureexceeds the values computed using

197. Principles of Operation7.1 3100 PrinciplesThe YSI 3100 obtains a conductance value by varying the amplitude of a square-wave currentforced throu

20normal to the current flow (A):Therefore, conductivity equals conductance multiplied by the cell constant.Example: For an observed conductance of 10

21Choosing a Conductivity CellDecide which cell will be the most useful for your conditions by considering the conductivity ofthe solution you want to

22Cell Constant CalculationYSI 3200 and 3400 Series conductivity cells are calibrated to ± 1% of nominal bymeans of a YSI transfer standard traceable

23Conductivity LawSolution Instrument CellConductivity Conductance ConstantS/cm or mho/cm = S or mho××××1/cmmS/cm or mmho/cm = mS or mmho××××1/cmµµµµS

24General Conductivity Measurement PrecautionsAfter selecting the proper cell, observe the following precautions to ensure accurate, repeatableresults

25change in conductivity for each degree change in temperature (%/°°°°C), which is called thetemperature coefficient. In extreme cases, the temperatur

iTable of Contents1. Introduction...

26The cell you use for small sample applications depends upon thequantity of solution available and the conductivity of thesolution. The 3401 cell (K=

277.4 TemperatureThe Model 3100 system utilizes a thermistor of sintered metallic oxide which changespredictably in resistance with temperature variat

28Cable Series Resistance and Shunt CapacitanceYSI 3200 series cells utilize a 4-wire connection virtually eliminating errors due to cableresistance.T

298. Warranty & RepairYSI Model 3100 Instruments are warranted for two years from date of purchase by the end user against defects inmaterials an

308.1 Cleaning InstructionsNOTE: Before they can be serviced, equipment exposed to biological, radioactive, or toxicmaterials must be cleaned and disi

318.2 Packing Instructions1. Clean and decontaminate items to insure the safety of the handler.2. Complete and include the Cleaning Certificate.3. Pla

328.3 Disassembly/Assembly ProceduresNOTE: The following procedure shouldonly be performed by a qualified servicetechnician.Case Disassembly• While ap

339. Accessories and Replacement PartsYSI Item # Description Comments003208 3208 Power Supply, 115 VAC003209 3209 Power Supply, 240 VAC031008 Overlay

349.1 YSI Conductivity CellsYSI 3200 series conductivity cells have a built in temperature sensor for temperaturemeasurement and automatic temperatur

359.2 Standard Calibrator SolutionsYSI manufactures NIST-traceable conductivity calibrator solutions for calibration purposes. Thefollowing conductiv

iiSmall Sample Measurements... 25

3610. Required NoticeThis equipment generates and uses radio frequency energy and if not installed and used properly,may cause interference to radio a

3711. Appendix A - SpecificationsModesConductivityTemperature compensated conductivitySalinityTemperatureConductivityRange Accuracy Resolution Freque

3812. Appendix B - Temperature Correction Data ForTypical SolutionsA. Potassium Chloride** (KCl)Concentration: 1 mole/liter Concentration: 1 x 10-1

39B. Sodium Chloride* (NaCl)Saturated solutions at all temperatures Concentration: 0.5 mole/liter°CmS/cm%/°C (to 25°C)°CmS/cm%/°C (to 25°C)0 134.50 1

40C. Lithium Chloride* (LiCl)Concentration: 1 mole/liter Concentration: 1 x 10-1 mole/liter°CmS/cm%/°C (to 25°C)°CmS/cm%/°C (to 25°C)0 39.85 1.82 0 5

41E. Ammonium Chloride* (NH4Cl)Concentration: 1 mole/liter Concentration: 1 x 10-1 mole/liter°CmS/cm%/°C (to 25°C)°CmS/cm%/°C (to 25°C)0 64.10 1.60 0

4213. Appendix C - Conversion FactorsTO CONVERT FROM TO EQUATIONmhos Siemens Multiply by 1mhos ohms 1/mhoohms mhos 1/ohmFeet Meters Multiply by 0.304

4314. Appendix D - Glossary of Termsampere (A) - SI unit of electric current; one coulomb per second.amplitude - The maximum deviation of an alternat

44NIST - National Institute of Standards and Technology. The US government agency that definesmeasurement standards in the United States.ohm (Ω) - SI

45

11. IntroductionThe YSI Model 3100 is a microprocessor based instrument designed to perform laboratorymeasurement of conductivity, salinity and temper

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21.2 ControlsFront PanelThe front panel of the instrument contains the display and keypad as shown below.3100 CONDUCTIVITY INSTRUMENT 12.85 uS 22

3The following diagram shows the typical display. 10.00 µS 24.8 °CThe [Mode] key is used to select the current display mode. Mode choices are conduct

4Cell ConnectionThe connector for the cell is a 7-pin mini DIN connector and is marked with an arrow to showproper alignment. Be sure to align the arr

53. System Configuration and Operation3.1 Turning the Instrument OnPlug the power supply into its mating connector on the back of the instrument. De