Economy Hand-held Conductivity/TDS Meters
Microprocessor-Based Push Button Calibration

EcoScan CON 6 Meter

Conductivity / oC
Auto & Manual Ranging Capability User Adjustable TDS Factor

EcoScan TDS 6 Meter

TDS / oC
Hold And Power-off Functions Large Easy-to-read Display Self Diagnostic Messages Rugged Splash-proof Design

Technology Made Easy.

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Splash-proof

Keypad

Carrying Kit Set

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Eutechs EcoScan CON 6/TDS 6 is based on Eutechs proprietary second generation Application Specific Integrated Circuit (ASIC) that provides ample sophistication with advanced features, while maintaining a user-friendly interface.
SINGLE-POINT AND MULTI-POINT AUTOMATIC OR MANUAL CALIBRATION Both meters allows single or multi-point calibration (up to 4 points) in the automatic mode that provides quick and hassle-free calibration. Manual calibration (up to 5 points) allows nonstandards solutions to conform to individuals requirements for best meter accuracy. USER CUSTOMISATION The EcoScan CON/TDS 6 meters even permit user-customisation of the following functions: Selecting Normalisation Temperature (20 or 25C); Adjusting Temperature Coefficient (0.0 to 3.0%/C); Single-or multi-point calibration; Selecting cell constant (k=0.1, 1.0 or 10.0) and resetting to factory default. AUTOMATIC TEMPERATURE COMPENSATION Meters are equipped with automatic temperature compensation (ATC) to keep readings accurate even under varying temperature conditions. ADJUSTABLE TDS FACTOR The TDS 6 allows you to set appropriate TDS factor (0.4 to 1.0) for accurate measurements. FREEZE AND AUTO POWER-OFF FUNCTIONS Freeze measured values for later reading and recording, useful in dimly lit and confined areas. Meters power-off automatically after 20 minutes of non-use to conserve battery life and save you money. EASY-TO-READ DISPLAY The large custom LCD (Liquid Crystal Display) provides optimum viewing of measured values with units of measure. The display prompts and guides you with self diagnostic message codes for trouble-free operation. SPLASH-PROOF KEYPAD Keypads are splash-proof and designed for easy finger touch operation. Tactile feedback confirms key selection, freeing you from guesswork. INNOVATIVE DESIGN EcoScan meters are ergonomically designed for convenient one-hand field operation. The ribbed body ensures firm grip preventing meter from slipping off during operation. A sturdy rubber boot is included to protect the meter from damage due to accidental knocks. A sturdy hinge at the back of the boot-allows easy benchtop viewing. RUGGED, ALL-WEATHER CARRYING CASE A custom-built rugged carrying case provides compact and convenient storage of meter, electrode, calibrating solutions and accessories, helpful for field testing. APPLICATIONS Agriculture & gardening Aquariums & fish farming Chemical & manufacturing industry Cooling towers & boilers Laboratories Printing Water & wastewater treatment.
Note: We reserve the right to make changes, improvements and modifications to products shown.
Specifications: EcoScan CON/TDS Series CON6 TDS6 Conductivity Range 0 to 20.00, 200.0, 2000 S/cm 0 to 20.00, 200.0 mS/cm Resolution 0.01, 0.1, 1 S/cm; 0.01, 0.1mS/cm Accuracy 1% Full Scale TDS Range 0 to 10.00, 10.0 to 100.0, 100 to 1000 ppm; 1.00 to 10.00, 10.00 to 100.0, 100 to 200 ppt (depending on factor setting) Resolution 0.01, 0.1 ppm; 0.01, 0.1, 1 ppt Accuracy 1% Full Scale Conductivity to TDS 0.4 to 1.0 Conversion factor Number of calibration 5: Maximum 1 points per range Temperature Range -10.0 to 110.0 oC 32.0 to 212 F Resolution/Accuracy 0.1 oC/0.5 for oC & F Cell Constant 0.1, 1.0. 10.0 (selectable) Temperature Coefficient 0.0 to 3.0% / oC Normalisation 20.0 C & 25.0 C Temperature (selectable) Temperature Automatic / Manual Compensation (from 0 to 50 oC) Auto-Ranging Capability Hold Function Auto Power-Off 20 minutes after last key operation

ORDERING INFORMATION

Item EcoScan CON 6 meter in a carrying kit (EC-ECOCONKIT) with EC-CONSEN91B EC-TDS6/03K EcoScan TDS 6 meter in a carrying kit (EC-ECOCONKIT) with EC-CONSEN91B EC-CONSEN91B 3 ring SS, Ultem body Electrode with ATC, cell constant = 1.0, 16 X 110 mm, 1m EC-ECOCONKIT Carrying kit with calibration standards and rinse bottle
The EcoScan series meters are supplied with a 3-year warranty from manufacturing defects and 6 months for electrode.

Order No. EC-CON6/03K

Distributed By:
Eutech Instruments Pte Ltd
55, Ayer Rajah Crescent, #04-16/24, Singapore 139949 Tel : (65) Fax : (65) E-mail : marketing@eutechinst.com Web-site : http://www.eutechinst.com
Eutech Instruments Europe B.V.
Mail Address : P.O.Box 254, 3860 AG Nijkerk Netherlands Visit Address : Wallerstraat 125K, 3862 CN Nijkerk Netherlands Tel : (31) 33-2463887 Fax : (31) 33-2460832 E-mail : info@eutech.nl Web-site : http://www.eutech.nl

Eutech Instruments USA

625 East Bunker Court, Vernon Hills, lllinois 60061, USA Tel : (1) 847-327-2727 Fax : (1) 847-247-2984 E-mail : eutechusa@eutechinst.com Web-site : http://www.eutechinst.com

POR 08X233223 7/02 Rev 0

EcoScan CON 5
Conductivity Handheld Meter

EcoScan TDS 5

TDS Handheld Meter

Instruction Manual

68X243602 ver 2.0 08/99

Technology Made Easy

EcoScan CON 5 / TDS 5

Table of Contents

1. INTRODUCTION
1.1 Introducing the EcoScan Series

2. GETTING STARTED

2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8
Description of Keypad Functions 3 Description of LCD Annunciators 3 Inserting & Removing the Rubber Boot 3 Inserting New Batteries 4 Battery Replacement 5 Connecting the Electrode and Temperature Sensor 5 Switching the Meter On 6 Setting the Conductivity-to-TDS Conversion Factor (EcoScan TDS 5 Only) 7

3. CALIBRATION

3.1 3.2 3.3

3.3.1 3.3.2

Conductivity Calibration (EcoScan CON 5) TDS Calibration (EcoScan TDS 5) Temperature Calibration
With Temperature probe For Preselected Curve Without Temperature probe (no ATC)

4. MEASUREMENT

4.1 4.2 4.3 Taking Measurement Holding a Reading Releasing a Held Reading
5. PROBE CARE AND MAINTENANCE 6. TROUBLESHOOTING 7. SPECIFICATIONS 8. ACCESSORIES
Thank you for purchasing Eutech Instruments EcoScan Conductivity and Total Dissolved Solids (TDS) meter series. These economy microprocessor-based handheld meters deliver up to 1% full-scale accuracy. It has a large custom LCD (Liquid Crystal Display) for clear and easy reading. EcoScan CON 5 measures Conductivity (uS/mS) and Temperature (oC) while the EcoScan TDS 5 measures Total Dissolved Solids (TDS) and Temperature (oC). These sturdy meters measure up to 3 different ranges with auto-ranging capability that switches to appropriate measuring range automatically. The instruction manual is organised for quick reference with step-by-step procedures that give you thorough review of the various features and meter operations. Included with your meter are a 2 stainless steel pin Conductivity electrode with built-in temperature sensor (for ATC), a rubber boot, 4 alkaline AAA batteries, instruction manual and warranty card. To order other accessories and buffer standard solutions, please refer to the Section on Accessories for more information.
2.1 Description of Keypad Functions
The EcoScan CON 5/TDS 5 meter has 6 keys on its splash-proof keypad. These comprise ON/OFF, HOLD/ENTER, CAL, MODE, and keys. ON/OFF: Powers the meter on and turns it off. Meter directly enters measurement mode when you switch it on. MODE: Selects measurement mode for Conductivity/TDS or Temperature, CAL: Allows calibration mode for Conductivity/TDS and Temperature, or to abort calibration without confirming any set value. HOLD: Freezes the measured reading for easy viewing. ENTER: Confirms calibration value. (UP) / (DOWN): Scrolls up and down to the values during calibration.
2.2 Description of LCD Annunciators
The meter has a large custom LCD that consists of 3-digit segments and operation annunciators for uS/mS or ppm/ppt and oC (Temperature). Other annunciators include HO (when the HOLD function is activated) and LO (low battery condition). HO

-1.8.8.8

umS pptm
2.3 Inserting & Removing the Rubber Boot
1. 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 of Conductivity electrode or temperature probe are not connected.
EcoScan CON 5 / TDS 5 2. To insert meter into rubber boot, slide in from the top of meter before pushing the bottom edges of meter down to set it into position. Lift up the stand at the back of meter for bench top applications if necessary.
2.4 Inserting New Batteries
The battery compartment is found at the back of instrument. To open the battery compartment, push in the direction of arrow and lift up the cover. Note the polarity of battery before inserting into position. After replacement, place cover back and press down until it locks tight.

2.5 Battery Replacement

A LO annunciator in the LCD alerts you when battery power is running low. Replace with the same type as recommended by the manufacturer.
Caution: Power off the meter when changing battery.
2.6 Connecting the Electrode and Temperature Sensor
To connect electrode into meter, align the connector slots with the posts of meters socket and rotate connector clockwise until it locks. Do not force when connecting. To remove, simply rotate the connector in anti-clockwise direction until it unlocks, and slide the connector off the socket. Phono jack of Temperature probe

BNC of Conductivity electrode
Insert the mini phono jack of temperature sensor into the socket on the meter. Unplug the phono jack when not in use or you measure Conductivity or TDS without any temperature compensation.
2.7 Switching the Meter On
1. Press ON/OFF key to power up your meter. All LCD segments display momentarily as the meter performs a self-diagnostic test, per shown in section 2.2. The LCD switches into Conductivity or TDS measurement mode. 2. Press MODE key to choose your desired mode of measurement with its corresponding annunciator displays in the LCD. For temperature mode, the measured reading can be 25.0oC (factory default) or the last calibrated temperature value if there is no temperature probe, or the current measured value if a temperature probe is connected. 3. The LCD displays Ur if the meter reading exceeds the maximum or Or if under minimum possible measurement range (refer to section on Specifications).
2.8 Setting the Conductivity-to-TDS Conversion Factor (EcoScan TDS 5 Only)
The EcoScan TDS5 is set to a default conversion factor of 0.67. This should give good results for most applications (including natural waters and other applications that calibrate to 442 standard solutions). You can adjust the factor for different salts, chemicals, or nutrient solutions using the following procedure. Note the meter allows adjustment of 0.50 to 0.85. 1. Turn meter on and press HOLD key. The HO annunciator appears on the upper left corner of the LCD and the reading freezes.
2. Press CAL key and the LCD will display F.67 indicating the current factor.
3. Adjust the TDS factor using (up) or (down) key.
4. Press ENTER key to confirm and the meter reverts to its measurement mode.
3.1 Conductivity Calibration (EcoScan CON5)
The meter is capable of calibrating 1 point per range (3 points across entire measurement range). If a range is not calibrated, the meter automatically detects the closest range calibrated and uses the calibration information. Calibrate to all measurement ranges to ensure the highest accuracy throughout all measurement range. Note that EcoScan will not accept calibration values less than 40 S/cm (20 ppm). All new calibration values will automatically override existing data. If you are measuring in solutions with Conductivity lower than 100 S/cm or TDS lower than 50 ppm, calibrate the meter at least once a week to get good accuracy. If you are measuring in the mid ranges and you wash the probe in deionised water and store it dry, calibrate the meter once a month. If you take measurements at extreme temperatures, calibrate at least once a week. Ensure that you use new Conductivity standard solutions or sachets during calibration. Do not reuse standard solutions as it may be contaminated and affect the calibration and accuracy of measurements. Store solutions in a dry, cool environment if possible. Always rinse the probe with either tap water or rinse solution before and after each calibration/sample measurement to avoid cross-contamination. For details please refer to section on Probe care and maintenance. 1. Pour a known standard solution e.g. 1413 S/cm into a clean container. Power on the meter, and the meter will automatically enter Conductivity measurement mode. 2. Immerse the electrode sufficiently into one of the containers of your standard solution. Stir gently and wait for reading to stabilise (approx. 30 seconds). Tap the electrode lightly on the bottom of the container to remove any air bubbles trapped. 3. Press CAL key to enter calibration mode. The LCD shows CA momentarily, and display shows the factory calibrated value flashing.

4. Press (up) or (down) key to scroll the reading until the displayed value matches your standard solution i.e. 1413 S/cm. 5. Press ENTER key to confirm calibration and the LCD displays the new set reading and revert to measurement mode.
6. Alternatively you can abort the new calibrated value by pressing CAL key to exit from calibration mode. Important: Meter allows a tolerance range of 30% of its measured reading. You will not able to scroll through to the desired value if reading is out of its tolerance.
3.2 TDS Calibration (EcoScan TDS 5)
The calibration procedure for the EcoScan TDS 5 is the same as EcoScan CON 5 (refer to section 3.1 for details).
3.3 Temperature Calibration 3.3.1 With Temperature probe For Preselected Curve
The temperature sensor included with your meter is factory-calibrated. Over time, the temperature calibration may drift and require recalibration. If you replace the probe you should calibrate temperature probe prior to Conductivity or TDS calibration. 1. Connect your temperature probe to the meter. Press MODE key to enter Temperature mode until oC annunciator appears in the LCD. 2. Compare the displayed value to a NIST certified thermometer or other thermometer known to be accurate. For best accuracy, place probe and thermometer in a constant temperature bath. 3. Press CAL key to enter temperature calibration mode. The LCD shows CA momentarily and the displayed reading flashes.
4. Press (up) or (down) key until the display shows the correct temperature. The arrow keys will scroll to the maximum allowable value of 5 oC. 5. Press ENTER key to confirm calibration. The LCD displays CO momentarily, and the meter reverts to measurement mode.
3.3.1.1 With Temperature probe (with Curve Selection)
In the event the temperature probe has drifted too far from its original characteristic due to age and use or if the probe is being replaced, it may be a good idea to match the probe to the best curve. There are 3 curves programmed in the unit. To choose the curve, proceed as follows: 1. Connect your temperature probe to the meter. Press MODE key to enter Temperature mode until oC annunciator appears in the LCD. 2. Compare the displayed value to a NIST certified thermometer or other thermometer known to be accurate. For best accuracy, place probe and thermometer in a constant temperature bath. 3. Press CAL key to enter temperature calibration mode. The LCD shows CA momentarily and the displayed reading flashes. 4. Press MODE key once. Note the reading. This is with respect to the curve 1. 5. Press (up) key once. The display will change to a different value which is with respect to curve 2. Note the reading. Press (up) key again, the reading now will be with respect to curve 3. Choose the curve which gives its reading closest to the actual value. 6. Press ENTER key and the display blinks once. The curve selection has now been made. To match the value exactly with the standard value, press (up) or (down) key, the display can be set to the exact value. Press ENTER to confirm.

3.3.2 Without Temperature probe (no ATC)
If no temperature probe is used, the meter compensates for Conductivity or TDS response based on a new calibrated temperature value manually set by you or at 25 oC (factory default). 1. Press MODE key to enter into Temperature mode until oC shows in the LCD. 2. Compare displayed value to a NIST certified thermometer or other thermometer known to be accurate. 3. Press CAL key to enter temperature calibration mode. The LCD shows CA momentarily and the displayed reading flashes. Note that this displayed value should either be 25.0 oC or last set temperature value.
Press (up) or (down) key until the display shows the correct temperature. The arrow keys will scroll to the maximum allowable value of 5 oC. Press ENTER key to confirm calibration. The LCD displays CO momentarily, and the meter reverts to measurement mode.

4.1 Taking Measurement

1. To begin measurement, rinse probe thoroughly with deionised water to remove any impurities. 2. Power on meter and the meter will automatically go into Conductivity/ TDS measurement mode. Press MODE key to select your desired mode of operation between Conductivity/TDS and Temperature. 3. Dip probe sufficiently, with the tip of probe completely immersed, into sample. Stir and tap it gently to remove any air bubbles trapped. Wait for the reading to stabilise. Note reading.

4.2 Holding a Reading

To freeze or hold your reading, press HOLD key once. The LCD displays HO annunciator to indicate the HOLD function is activated. HO

12.01 12.01

4.3 Releasing a Held Reading
Press HOLD key again to deactivate the HOLD function or to release your frozen reading. The meter returns to measurement mode, and the HO annunciator disappears from the LCD.
5. PROBE CARE AND MAINTENANCE
Keep your Conductivity probe clean. Do not strike the probe against any hard surface, and never scratch the stainless steel pins with hard material. Wash the probe thoroughly with tap or deionised water after each use. Do not immerse the probe in oily solutions. To remove oil films or oxidation, clean electrode with alcohol. Clean it with a mild detergent solution. Blot it dry. Wash thoroughly in tap water and then in deionised water. Recalibrate the meter after cleaning it.

6. TROUBLESHOOTING

Problem

No display

a) Batteries not in place. a) Dirty electrode. b) Broken electrode.

Solution

a) Insert batteries. b) Re-insert batteries in correct polarity. a) Clean electrode and recalibrate. b) Replace electrode. a) Recalibrate the instrument. a) Turn off meter and turn it on. Return if necessary. b) Release reading by pressing HOLD key. c) Replace electrode.

Unstable reading

E2 display E3 display
a) Error in calibration. a) Failed initialization. b) Display freezes. c) Faulty electrode.

Not able to calibrate

7. SPECIFICATIONS
Model Conductivity Range Resolution Accuracy TDS Range Resolution Accuracy TDS Factor No. of Calibration Points Temperature Range Resolution/Accuracy Temp. Coefficient Temperature Compensation Features Auto Ranging Hold Function Auto Shut Off Low Battery Indication Error Message Display Display Operating Temperature Power Requirements Battery Life Meter Dimensions Meter Weight Yes HO After 17 minutes LO E2, E3 Single Custom LCD 0 to 50 oC 4 x AAA Alkaline Batteries > 100 hours 14 x 7 x 3.5 cm 200g 15 0 to 199.9 uS, 0 to 1999 uS; 0 to 19.99 mS 0.1, 1 uS; 0.01 mS +/- 1% full scale 0 to 99.9, 0 to 999 ppm; 0 to 9.99 ppt 0.1, 1 ppm; 0.01 ppt +/- 1% full scale 0.50 to 0.85 (user selectable 0.67 default) 1 to 3 points (1 per range) 0.0 to 100.0 C 0.1 C; +/- 0.5 C 2% / C Automatic or manual (from 0 to 80 oC)

o o o o

EcoScan CON 5

8. ACCESSORIES
Accessories available: EC-CONSEN45B: Epoxy-body 2-stainless steel pins Conductivity Electrode with built-in ATC sensor, 12 x 110 mm EC-CON-100BT: 100 uS Conductivity Standard Solution (480 ml per bottle) EC-CON-500BT: 500 uS Conductivity Standard Solution (480 ml per bottle) EC-CON-1413BT: 1413 uS Conductivity Standard Solution (480 ml per bottle) EC-CON-2764BT: 2764 uS Conductivity Standard Solution (480 ml per bottle) EC-CON-1288BT: 12.88 mS Conductivity Standard Solution (480 ml per bottle) EC-442-50BT: 50 ppm Standard Solution (480 ml per bottle) EC-442-300BT: 300 ppm Standard Solution (480 ml per bottle) EC-442-1000BT: 1000 ppm (1 ppt) Standard Solution (480 ml per bottle) EC-442-3000BT: 3000 ppm (3 ppt) Standard Solution (480 ml per bottle) EC-CON-447BS: 447 uS Conductivity Standard Sachets (20 ml x 20 per box) EC-CON-1413BS: 1413 uS Conductivity Standard Sachets (20 ml x 20 per box) EC-CON-2764BS: 2764 uS Conductivity Standard Sachets (20 ml x 20 per box) EC-CON-15000BS: 15000 uS (15 mS) Conductivity Standard Sachets (20 ml x 20 per box)

EUTECH INSTRUMENTS PTE LTD. Blk 55, Ayer Rajah Crescent #04-14/24 Singapore 139949 Tel: (65) Fax: (65) E-mail: marketing@eutechinst.com Web-site: http://www.eutechinst.com 17