BANTE instruments TDSscan10 Pocket TDS Tester User Manual

June 11, 2024
BANTE instruments

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BANTE instruments TDSscan10 Pocket TDS Tester

Overview

Thank you for selecting the TDSscan series pocket TDS tester. This user manual provides a step-by-step guide to help you operate the tester, please carefully read the following instructions before use.
Installing the Batteries

  1. Remove the battery compartment lid.
  2. Insert three LR44 alkaline batteries into the battery compartment,  note polarity. 
  3. Replace the battery compartment lid to its original position and turn clockwise until tight. 

Keypad

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Prior to Use
Remove the protective cap from the bottom of the tester. If the sensor has dried out, soak the electrode for about 10 minutes in tap water.

Switching the Tester On and Off

  • Press the Meas key to switch on the tester.
  • Press and hold the Meas key to switch off the tester.

INFO: If you do not press any key within 8 minutes, the tester will switch off automatically to conserve energy.

TDS Calibration

The TDSscan10 tester allows 1 point calibration. For better accuracy, we recommend to calibrate the tester regularly. The following table shows acceptable standard solutions for each tester.

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Make sure that using a fresh standard solution during the calibration. DO NOT reuse the standard solution after calibration, contaminants in solution will affect the calibration and eventually the accuracy of the measurement.

  1. Rinse the electrode with distilled water and place into the standard solution, stir tester gently to remove air bubbles trapped in the slot of the sensor.

  2. Press and hold the Cal key to enter the calibration mode, the display shows —. 

  3. Press the key to set the calibration value, make sure that the displayed value matches the calibration standard.

  4. Press the Meas key, the calibration value will automatically flash three times.

  5. Press the Meas key again, the tester returns to the measurement mode, the CAL icon disappears from the display. Calibration is completed.
    INFO: During the calibration, if the display shows indicating that the measured TDS value deviates from the theoretical value of the standard solution. The calibration will not be accepted. Please replace the fresh standard solution and calibrate the tester again.

    • During the setting, press and hold the key will make the value change faster.
    • If you want to exit the calibration, DO NOT press the Meas key in the step 4. Press and hold the key until the display shows , press the Meas key to exit.

Measurement

TDS Measurement
Rinse the electrode with distilled water, place the electrode into the sample solution and stir gently, make sure that no air bubbles on the sensor surface. Wait for the measurement to stabilize and record the reading.

INFO:

  • During the measurement, DO NOT completely immerse the tester in water.
  • Press the key, the tester will lock the measurement, the HOLD icon appears on the display. Press the key again to resume measurement.
  • If the display shows indicating the measurement exceeds the  range, remove the tester from the sample immediately.

Temperature Measurement

  • Press the oC key, the tester shows the temperature readings.
  • Press the Meas key to return to the TDS measurement.

Electrode

Maintenance and Replacement

  • Rinse the electrode thoroughly with distilled water after use.
  • Do not touch the platinum black coating on the sensor surface and always keep it clean.
  • If there is a build-up of solids inside the sensor, remove carefully, then recalibrate the tester.
  • If you do not use the tester for long periods, remove the batteries.

Replacing the Electrode
If the tester fails to calibrate or gives fluctuating readings, you should consider replacing the electrode.

  1. Twist the electrode collar counter clockwise, pull the electrode away from the tester.
  2. Align the slot on the new electrode, gently push the electrode into the tester. 
  3. Twist the electrode collar clockwise until tight.

Appendix

Calculating the TDS Conversion Factor
The TDSscan10 tester allows setting the conversion factor according to the type of sample. The factory default is 0.50. The following formula describes the calculation method.

  • Factor = Actual TDS / Actual Conductivity @ 25° C

Where

  • Actual TDS = Value from the high purity water and precisely weighed
  • NaCl or KCL reagent
  • Actual Conductivity = The tester measured conductivity value

Setting the TDS Conversion Factor

  1. Press and hold the °C key, the display shows —.
  2. Press the key to set the conversion factor.
  3. Press the Meas key to save and return to the measurement mode.

Preparation of TDS Standard Solutions
Place the analytical grade potassium chloride (KCl) in a beaker and dry in an oven for about 3 hours at 105° C (221° F), then cool to room temperature. Add the reagent to a 1 liter volumetric flask according to the instructions in table below.

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Fill the distilled water to the mark, mix the solution until the reagent is completely dissolved.
Optional Accessoriesinstruments

Tester Specifications

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Disposal
This product is required to comply with the European Union’s Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC and may not be disposed of in domestic waste. Please dispose of product i n accordance with local regulations at the collecting point specified for electrical and electronic equipment.

Warranty

The warranty period for tester is one year from the date of shipment. Above warranty does not cover the electrode and standard solution. Out of warranty products will be repaired on a charged basis.
The warranty on your tester shall not apply to defects resulting from:

  • Improper or inadequate maintenance by customer
  • Unauthorized modification or misuse
  • Operation outside of the environment specifications of the products.

For more information, please contact the supplier.

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The information in this document is subject to change without notice. Copyright © Bante Instruments Inc, 2022. All rights reserved.

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References

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