EUTECH INSTRUMENTS CON 6 Instruction Manual
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EUTECH INSTRUMENTS CON 6 Instruction Manual

Hand-held conductivity/tds meter
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Instruction Manual
CON 6/TDS 6
Hand-held Conductivity/TDS Meter
68X243618
Technology Made Easy ...
Rev.3 06/06

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Summary of Contents for EUTECH INSTRUMENTS CON 6

  • Page 1 Instruction Manual CON 6/TDS 6 Hand-held Conductivity/TDS Meter 68X243618 Technology Made Easy ... Rev.3 06/06...
  • Page 2 This manual serves to explain the use of the Conductivity and TDS handheld meters. The models covered are the CON 6 and TDS 6. This manual functions in two ways: first as a step by step guide to help you operate the meter;...

  • Page 3: Table Of Contents

    Taking Measurements Using Manual Ranging Function HOLD Function A VANCED SETUP FUNCTIONS Advanced Setup Overview Select Cell Constant Automatic Calibration (for CON 6) Setting the TDS Factor (for TDS 6) Temperature Coefficient Normalization Temperature Single-Point Calibration Restore Factory Default Values...
  • Page 4 ADDENDUM 2: CALCULATING tDS CONVERSION FACTOR Addendum 3: calculating temperature coefficients WARRANTY RETURN OF ITEMS...

  • Page 5: Introduction

    It has a large custom LCD (Liquid Crystal Display) for clear and easy reading. CON 6 measures Conductivity (µS/mS) and Temperature (°C) while the TDS 6 measures Total Dissolved Solids (TDS) and Temperature (°C). This sturdy meter measures up to 5 different ranges with auto-ranging capability that switches to appropriate measuring range automatically.
  • Page 6 Instruction Manual CON 6/TDS 6 ° Conductivity/ Meter HOLD ENTER MODE...

  • Page 7: Display & Keypad Functions

    (Temperature). Other annunciators include “HO” (when the HOLD function is activated) and “LO” (low battery condition). See Figure below. HO LO ° µ pptm LCD and Customized Annunciators for CON 6/TDS 6 meter Primary display Temperature indicator Parts Per Million (ppm) or Parts Percentage indicator Per Thousand (ppt) indicator - Temperature Coefficient.
  • Page 8 Instruction Manual CON 6/TDS 6...

  • Page 9: Keypad

    Instruction Manual CON 6/TDS 6 Keypad The CON 6 / TDS 6 meter has 6 keys on its splash-proof keypad; ON/OFF, HOLD/ENTER, CAL, MODE, ▲ and ▼ keys. Some buttons have several functions depending on its mode of operation. •...

  • Page 10: Preparation

    Instruction Manual CON 6/TDS 6 PREPARATION Inserting & Removing Rubber Boot (Rubber Boot sold separately) To remove meter from rubber boot, push out from the bottom edges of meter until it is completely out of boot. Ensure that the cables...

  • Page 11: Battery Replacement

    Instruction Manual CON 6/TDS 6 Battery Replacement A “LO” annunciator in the LCD alerts you when battery power is running low. See Figure below. Replace with the same type as recommended by the manufacturer. µ "LO" Battery Condition Caution: Power off the meter when changing battery.

  • Page 12: Conductivity Electrode Information

    Instruction Manual CON 6/TDS 6 Conductivity Electrode Information The CON 6/TDS 6 hand-held meter is supplied with a conductivity/TDS electrode with a BNC connector. This conductivity/TDS electrode (Order Part Number: EC- CONSEN91B/ 35606-55) comes with Stainless Steel rings, cell constant of K = 1.0, and a built-in temperature sensor for Automatic Temperature Compensation (ATC).
  • Page 13 Instruction Manual CON 6/TDS 6 NOTE DO NOT remove the protective probe guard during measurement and calibration as it may affect your readings. We recommend that you do not submerge the probe above the protective guard. You can submerge the cable for brief periods of time, but not continuously.

  • Page 14: Connecting The Probe To Meter

    Instruction Manual CON 6/TDS 6 Connecting the Probe to Meter To connect electrode into meter, align the connector slots with the posts of meter’s socket and rotate connector clockwise until it locks. To remove, simply rotate the connector in anti-clockwise direction until it unlocks, and slide the connector off the socket.

  • Page 15: Switching The Meter On

    Instruction Manual CON 6/TDS 6 Switching the Meter On When switching the meter on, it will go through a series of display, showing the various setup parameters. For CON 6 ° µ pH % ° ° µ µ pptmV Measurement Mode For tdS 6 °...
  • Page 16 CON 6/TDS 6 Press ON/OFF key to power up your meter. The first screen shows [Con 6] (or [tdS 6]) which is the meter’s name. Second screen shows [C 1.0] which is the conductivity cell constant, k. You can select different cell constant of 0.1, 1.0 or 10.0. Refer to Section on Advance Setup.

  • Page 17: Change Conductivity/ Tds Temperature Measurement Mode

    Instruction Manual CON 6/TDS 6 Change Conductivity/ TDS Temperature Measurement Mode To switch between Conductivity/ TDS measurement mode and Temperature measurement mode, simply press the MODE key. The customized annunciator helps indicate the measurement parameter you are in. Annunciator °...

  • Page 18: Libration A

    Instruction Manual CON 6/TDS 6 CALIBRATION Important Information on Meter Calibration Your meter has five measuring ranges. You can calibrate one point in each of the measuring ranges (up to five points). If you are measuring values in more than one range, make sure to calibrate each of the ranges you are measuring.
  • Page 19 Instruction Manual CON 6/TDS 6...

  • Page 20: Preparing The Meter For Calibration

    Calibrate to all measurement ranges to ensure the highest accuracy throughout all measurement range. Note that CON 6/ TDS 6 will not accept calibration values less than 40 µS/cm (20 ppm). All new calibration values will automatically override existing data.

  • Page 21: Selection Of Automatic Or Manual Calibration

    25 °C, see Section 6.6 – Normalization Temperature. Selection of Automatic or Manual Calibration This meter is capable of performing either automatic (only CON 6) or manual calibration. In the automatic calibration mode, the meter (only CON 6) automatically detects...

  • Page 22: Automatic Calibration (Conductivity)

    Instruction Manual CON 6/TDS 6 Automatic Calibration (Conductivity) In the Automatic Calibration mode, the meter is capable of accepting either single-point or up to 4 points for multi-point calibration with maximum of 1 point per specific measurement range. For the known calibration standard values refer to Table 1 in Section 4.3.
  • Page 23 Instruction Manual CON 6/TDS 6 IMPORTANT NOTES: Meter allows a tolerance range of ±40% of its calibration standard. An error message “Err 1” will be displayed for 3 seconds if you attempt to calibrate with a solution whose value is outside the tolerance range.

  • Page 24: Manual Calibration (Conductivity Or Tds)

    (specific to your own application) and calibrate the meter. The following example shows calibration sequence to 12.00 mS conductivity calibration standard. Procedure is similar for CON 6 and TDS 6 meters. Measurement Mode If necessary, press MODE key to select conductivity mode.

  • Page 25: Temperature Calibration

    Instruction Manual CON 6/TDS 6 Temperature Calibration The Conductivity electrode (Refer to Accessories section for order number) has a built-in temperature sensor for ° ATC. The temperature sensor is factory calibrated to the meter. Calibrate your sensor only if you suspect temperature errors that may have occurred over a long period of time or if you have a replacement probe.

  • Page 26: Measurement

    Instruction Manual CON 6/TDS 6 MEASUREMENT The CON 6/TDS 6 meter is capable of taking measurements with automatic or manual temperature compensation. With Automatic Temperature Compensation (ATC) For ATC, make sure the phono jack of the probe (see Figure in Section 3.5) is securely inserted.

  • Page 27: Without Atc (Manual Temperature Compensation)

    Instruction Manual CON 6/TDS 6 Without ATC (Manual Temperature Compensation) For manual temperature compensation, simply unplug the probe’s phono jack (not BNC) from the meter. To use manual temperature compensation, you need to enter the temperature value of your process into the meter. This is the value at which the reading will manually temperature compensates.

  • Page 28: Taking Measurements

    Instruction Manual CON 6/TDS 6 Taking Measurements To take readings: Rinse the probe with de-ionized or distilled water before use to remove any impurities adhering to the probe body. Shake or air dry. To avoid contamination or dilution of your sample, rinse probe with a small volume of your sample liquid.
  • Page 29 Instruction Manual CON 6/TDS 6 Auto-ranging Manual ranging: 0 - 20.00 uS/cm Manual ranging: 0 - 200.0 uS/cm µ µ µ µ Manual ranging: 0 - 200.0 mS/cm Manual ranging: 0 - 20.00 mS/cm Manual ranging: 0 - 2000 uS/cm...

  • Page 30: Hold Function

    Instruction Manual CON 6/TDS 6 HOLD Function This feature lets you freeze the display for a delayed observation. HOLD can used any time in measurement mode. µ To hold a measurement, press the HOLD key while in measurement mode. [HO] will appear on...

  • Page 31: Vanced Setup Functions D

    First release ON key first before releasing the MODE key. [StUP] indicator will appear momentarily and [CELC] will appear next. Overviews of CON 6 and TDS 6’s Setup Menu as follows. Enter Setup Page. Select Cell Constant. Choice of k = 0.1, 1.0, and 10.0.
  • Page 32 Instruction Manual CON 6/TDS 6 Select Normalization Temperature. Choice of ° either 20 °C or 25 °C. Default value is 25 °C. Adjust TDS factor from 0.4 to 1.0. Default value is 0.5. (Available in TDS 6 meter only) Select Single Point Calibration. Choice of “Yes”...
  • Page 33 Press ON/OFF and MODE keys simultaneously for 2 seconds, release ON/OFF key first then release MODE key a second later. A "StUP" indicator will appear for 1.5 seconds before showing the first menu ° Overview of CON 6 Setup Menu...
  • Page 34 Instruction Manual CON 6/TDS 6 Meter Off MODE Press ON/OFF and MODE keys simultaneously for 2 seconds, release ON/OFF key first then release MODE key a second later. A "StUP" indicator will appear for 1.5 seconds before showing the first menu °...

  • Page 35: Select Cell Constant

    Instruction Manual CON 6/TDS 6 Select Cell Constant This meter lets you select a cell constant of K = 1.0, 10, or 0.1. Use a cell of K = 1.0 for midrange measurements HOLD ENTER Use a cell of K = 10 for high range measurements (above 20 mS or 10 ppt).

  • Page 36: Automatic Calibration (For Con 6)

    Instruction Manual CON 6/TDS 6 Automatic Calibration (for CON 6) The automatic calibration allows you to quickly calibrate the meter to any of the four widely used conductivity calibration standards. For a list of calibration standards refer to Table 1 in Section 4.3.

  • Page 37: Temperature Coefficient

    Instruction Manual CON 6/TDS 6 Press ▲ or ▼ key until [tdS] appears on the LCD. Press ENTER key. Press ▲ or ▼ key to select a value between 0.4 to 1.0. Press ENTER key to select. The meter will take you back to the menu, [tdS].

  • Page 38: Normalization Temperature

    Instruction Manual CON 6/TDS 6 Normalization Temperature You can set the meter to normalize its conductivity measurements to a standard temperature of either 25 °C or 20 °C. The default value is 25 °C. Enter the advanced setup as described in Section 6.1.

  • Page 39: Restore Factory Default Values

    Instruction Manual CON 6/TDS 6 Restore Factory Default Values This function allows you to reset all parameters to factory default settings. This clears all calibration data and any other setup functions you might have changed. IMPORTANT: Once activated the meter’s settings and calibration data will be erased and always exercise caution as meter reset is not reversible.

  • Page 40: Probe Care And Maintenance

    Instruction Manual CON 6/TDS 6 PROBE CARE AND MAINTENANCE Keep the conductivity probe clean. Rinse the probe twice, and gently swirl it while you take readings. For best accuracy, soak a dry probe for at least 5 to 10 minutes or longer before calibration. Rinse the probe with deionized or tap water before storing.

  • Page 41: Trouble-Shooting Guide

    Instruction Manual CON 6/TDS 6 TROUBLE-SHOOTING GUIDE Problem Cause Solution Power on but a) Batteries not in place a) Check that batteries no display are in place and making good contact. b) Batteries not in correct polarity (+ and –...

  • Page 42: Error Messages

    Instruction Manual CON 6/TDS 6 ERROR MESSAGES LCD Display Indicates Cause Solution “LO” indicator Low battery level. Need new batteries Clean battery appears. or battery contacts. Replace connection is bad. batteries with fresh ones, noting polarity. Err 1 Conductivity Calibration point is...

  • Page 43: 10 Specifications

    Instruction Manual CON 6/TDS 6 10 SPECIFICATIONS SPECIFICATIONS DESCRIPTIONS CON 6 TDS 6 Conductivity Range 0 to 20.00, 200.0, 2000 µS/cm; • 0 to 20.00, 200.0 mS/cm Resolution 0.01, 0.1, 1 µS/cm: 0.01, 0.1 ,mS/cm Accuracy ±1% F.S. TDS Range 0 to 10.00, 10.0 to 100.0, 100 to...
  • Page 44 Instruction Manual CON 6/TDS 6 Auto- & Manual- • • ranging HOLD Function • • Auto Power off 20 minutes after last key operation • • Inputs BNC for conductivity and phono jack • • for temperature Display Single Custom LCD •...

  • Page 45: 11 Accessories

    (EC-CONSEN91B/ 35606-55). 3 ring SS, Ultem body Electrode with EC-CONSEN91B 35606-55 ATC & BNC plug (for CON 6), cell constant = 1.0, x110 mm, 1m cable length Carrying Kit with empty bottles EC-ECODRY-KIT 35632-97...
  • Page 46 Instruction Manual CON 6/TDS 6 Calibration Solutions 1,413 µS KCl Calibration Solution EC-CON-1413BT 00653-18 in 480-ml leak-proof bottle (1 pint) 12.88 mS KCl Calibration Solution EC-CON-1288BT 00606-10 in 480-ml leak-proof bottle (1 pint) 2,764 µS KCl Calibration Solution EC-CON-2764BT 00653-20 in 480-ml leak-proof bottle (1 pint) 10 µS conductivity standard...

  • Page 47: Conductivity Theory

    Instruction Manual CON 6/TDS 6 CONDUCTIVITY THEORY Conductance is a quantity associated with the ability of primarily aqueous solutions to carry an electrical current, I, between two metallic electrodes when a voltage E is connected to them. Though water itself is a rather poor conductor of electricity, the presence of ions in the water increases its conductance considerably, the current being carried by the migration of the dissolved ions.
  • Page 48 Instruction Manual CON 6/TDS 6 areas and separation distances, it is possible to standardize or specify conductance measurements. Thus derives the term specific conductance or conductivity. The relationship between conductance and specific conductivity is: Specific Conductivity, S.C. = (Conductance) (cell constant, k)
  • Page 49 Instruction Manual CON 6/TDS 6 Some users prefer the use of resistivity units to describe their water, particularly where high purity water is involved. The unit most often used to describe resistivity is megohm-cm, which are simply the reciprocal of conductivity (µS/cm).
  • Page 50 Since temperature affects the conductivity measurement so profoundly, the usual practice is to reference the conductivity to some standard temperature. This is typical 25 °C, but the CON 6 and TDS 6 meters permit the choice of 20 °C or 25 °C in the advance setup menu.

  • Page 51: 13 Addendum 1: Calibration Tips

    Instruction Manual CON 6/TDS 6 13 ADDENDUM 1: CALIBRATION TIPS You only need one calibration for measurement throughout the entire range of the meter. If a range was not calibrated, the meter automatically detects the closest range calibrated and uses that calibration information. However, only the ranges that were calibrated have maximum accuracy.
  • Page 52 Instruction Manual CON 6/TDS 6 14 ADDENDUM 2: CALCULATING TDS CONVERSION FACTOR You can calibrate your meter using TDS calibration standard solutions. The calibration standard only needs to give the TDS value at a standard temperature such as 25 °C. To determine the conductivity-to-TDS conversion factor use the following formula: Factor = Actual TDS ÷...
  • Page 53 Instruction Manual CON 6/TDS 6 15 ADDENDUM CALCULATING TEMPERATURE COEFFICIENTS To determine the temperature coefficient of your sample solution use this formula: Where: tc = Temperature coefficient 25 = 25 °C = Conductivity at Temp 1 = Conductivity at Temp 2...
  • Page 54 Instruction Manual CON 6/TDS 6 Calculate the temperature coefficient of your solution according to the formula shown above. Enter the temperature coefficient you calculated into the meter. Refer to Section 6.5 – Temperature Coefficient. The calculated temperature coefficient will not be applied to all the meter...
  • Page 55 Instruction Manual CON 6/TDS 6 16 WARRANTY This meter is supplied with a warranty against significant deviations in material and workmanship for a period of THREE years from date of purchase whereas probe with a SIX-month warranty. If repair or adjustment is necessary and has not been the result of abuse or misuse within the designated period, please return –...
  • Page 56 Instruments will not be responsible for damage resulting from careless or insufficient packing. A restocking charge will be made on all unauthorized returns. NOTE: Eutech Instruments Pte Ltd/ Oakton Instruments reserves the right to make improvements in design, construction, and appearance of products without notice.
  • Page 57 Instruction Manual CON 6/TDS 6 NOTES...
  • Page 58 Instruction Manual CON 6/TDS 6 For more information on Eutech Instruments/ Oakton Instruments’ products, contact your nearest distributor or visit our website listed below: Distributed by: Oakton Instruments Eutech Instruments Pte Ltd. P.O Box 5136, Blk 55, Ayer Rajah Crescent,...

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