Eutech instruments ECTestrlow, ECTestrhigh, ECTestrpure+, TDSTestrlow, TDSTestrhigh User Manual

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This Instruction Manual is also available for download on our Web-site: eutechinst.com or 4oakton.com

INC Key

INSTRUCTION MANUAL

EC/TDS/SALT Testr

Large Screen

Waterproof Conductivity/TDS/Salt Tester

Introduction

Thank you for selecting our microprocessor-based waterproof EC / TDS / SALT tester with large dual line display. You have one of the following models:

• ECTestrlow • ECTestrlow+ • ECTestrhigh • ECTestrhigh+ • ECTestrpure+

• TDSTestrlow • TDSTestrlow+ • TDSTestrhigh • TDSTestrhigh+ • TDSTestrpure+

• SALTTestr

The non plus models are designed with user-replaceable two-pin type sensor with many user friendly features such as the Hold function, Automatic Temperature Compensation and Self-Diagnostic Messaging capabilities. The plus models, with the user-replaceable cup type sensor, have more additional features such as simultaneous temperature display, °C or °F selection, and have higher resolution measurement. This manual provides a step-by-step guide to operate the testers.

Before you begin:

Remove the electrode’s protective cap. Soak the electrode for a few minutes in alcohol to remove any oil stains on the electrodes which will affect the accuracy of the tester. Rinse thoroughly with deionized water and shake off dry.

Calibration

The tester is factory calibr ated. However, to ensure accuracy, you can calibrate the tester on a regular basis. Depending on the model selected, you can calibrate the Conductivity / TDS / Salt / Temperature on a one point calibration using the appropriate calibration standard.

The following table lists each model allowable calibration range when selecting a calibration standard. It is best to select a standard close to the test solution value.

ModelModel

Model

ModelModel

Calibration 200 to 1990 200 to 1999 2.00 to 19.90 2.00 to 19.99 20.0 to 199.9 Standard Range uS/cm uS/cm mS/cm mS/cm uS/cm

ModelModel

Model

ModelModel

Calibration 200 to 200 to 1.00 to 1.00 to 20.0 to 1.00 to Standard Range 1990 ppm 1999 ppm 10.00 ppt 10.00 ppt 199.9 ppm 10.00 ppt

TDSTTDST

TDST

TDSTTDST

ECTECT

ECT

ECTECT

estrestr

estr

estrestr

estr

estrestr

lolo

ECTECT

estrestr

lolo

w+w+

ECTECT

estrhighestrhigh

ECTECT

TDSTTDST

TDST

TDSTTDST

estrhigh+estrhigh+

ECT

estrhigh+

ECTECT

estrhigh+estrhigh+

estrhigh+

estrhigh+estrhigh+

ECT

estr

ECT

lolo

ECTECT

estrestr

lolo

TDSTTDST

estrestr

lolo

TDST

TDSTTDST

estr

estrestr

w+w+

lolo

w+w+

lolo

estrhigh

lolo

w+w+

ECTECT

estrhighestrhigh

TDSTTDST

estrhighestrhigh

TDST

estrhigh

TDSTTDST

estrhighestrhigh

TDSTTDST

TDST

TDSTTDST

estrestr

estr

estrestr

ECTECT

ECT

ECTECT

purpur

pur

purpur

estrestr

estr

estrestr

e+e+

SALSAL

SAL

SALSAL

purpur

pur

purpur

e+e+

estrestr

estr

estrestr

Table 1

1. Organise your calibration standard solution in two beakers – one for rinsing and the other for calibration. Prepare separate de-ionized water for electrode rinsing.

2. Twist off and open the battery compartment lid (the cap with the lanyard loop). You will see two switches – the INC (increment) and DEC (decrement) keys.

3. Switch on the unit using the ON/OFF key.

4. Rinse the electrode in de-ionized water and then rinse with the calibration standard.

5. Dip the electrode to the calibration standard intended for calibration

and swirl gently to create a homogenous sample. Wait for the reading to stabilize.

6. Press the INC or DEC key to enter calibration mode and to adjust the

reading to the calibration standard value. The upper display will be the adjustable reading for calibration whereas the lower display will be the default reading of the standard.

Note: At this point, the non-plus models will have its upper and lower display showing readings with resolution of its plus version. Reading adjustment can then be made from its last significant digit. Upon confirming the calibration, the reading changes back to its original resolution.

7. Wait for 5 seconds for the tester to automatically confirm the calibration value by displaying “CO” and return to the measurement mode.

8. Replace the battery compar tment lid. The tester is now ready for measurement.

Note: To exit this program without confirming the calibration, press the HOLD button before the automatic confirmation takes place.

Note: The tester will exit calibration mode with “Er.0” message if the temperature is outside the 0 to 50°C range. Please refer to information under ’Self Diagnostic Messages’.

Note: The calibration window is +/- 50% from the default reading of the standard.

After 5 sec, “CO” is displayed signifying automatic confirmation

DEC

INC

DEC

Figure 1: Example of a calibration sequence using 2764 µS calibration standard

Measurement

1. Press the ON/OFF button to switch the tester on.

2. Dip the electrode into the test solution making sure that it is fully immersed. Stir to clear any trapped air bubbles from the electrode and let the reading stabilize. For plus models, you can opt for the cup style measurement by filling the electrode cup with sample of test solution.

3. Note the value or press HOLD button to fr eeze the reading. To release the reading, press HOLD again.

4. Press ON/OFF to turn off tester. If you do not press a button for 8.5 minutes, the tester will automatically shut off to conserve batteries.

ON/OFF

Figure 2: Example of a Power Up Sequence

HOLD Function

This feature lets you freeze the display for a delayed observation.

1. Press HOLD button to freeze the measurement. A ‘HOLD’ indicator will be displayed and the measurement will be frozen.

2. Press HOLD again to release the measurement. The ‘HOLD’ indicator will not be displayed anymore indicating the held measurement is released.

Figure 3: Example of HOLD Function

Temperature Mode Selection (Only for PLUS Models)

This feature lets you select either the Celsius (°C) or the Fahrenheit (°F) temperature mode display. From the measurement mode,

1. Press °C/°F button to select the desired temperature mode. The temperature display will toggle between the Celsius reading and the Fahrenheit reading.

Figure 4: Example of a temperature mode selection

TDS Factor Setting (Only for TDS Models)

The TDS models features includes the setting of the TDS factor. You can adjust the TDS factor from 0.4 to 1.0. From the measurement mode,

1. Press HOLD button to bring the tester to the HOLD mode.

2. Press either the INC or DEC key to enter the TDS Factor Setting mode. The upper display will be the adjustable TDS factor whereas the lower display will be the last TDS Factor setting.

3. Use the INC or DEC key to set the correct TDS factor for your sample measurement.

4. Wait for 5 seconds for the tester to automatically confirm the new setting by displaying “CO” and return to the measurement mode.

After 5 sec, “CO” is displayed signifying automatic confirmation

DEC

INC

DEC

Figure 5: Example of setting the TDS Factor

Electrode Maintenance

1. Always keep the sensor electrodes clean. Rinse the electrodes with de-ionized water and wipe them dry with clean cloth before storing with its protective cap. For the plus models, remove the white plastic cup insert to thoroughly clean viscous solutions. Never scratch the electrodes with a hard substance.

2. For better performance, soak the electrode in alcohol for 10 to 15 minutes and rinse with de-ionized water before starting any measurement process. This is to remove dirt and oil stains on the electrode which may affect the accuracy of the measurements.

INC Key

Temperature Calibration (Only for PLUS Models)

Temperature calibration need not be performed ever y time, unless the temperature reading differs from that of an accurate thermometer. If temper ature calibration is performed, Conductivity/TDS/Salt calibration is mandatory.

From the measurement mode,

1. Press the °C/°F button to select the desired temperature mode (Celsius or Fahrenheit).

2. Dip the tester into a solution of known temperature and allow time for the in built temperature sensor to stabilize.

3. Press either the INC or DEC key to bring the tester to the calibration mode.

Note: At this stage, if the Conductivity/TDS/Salt reading is outside the specified range (showing Or or Ur), the tester will show an error message of “Er.1”. You can still proceed with the temperature calibration by continuing with step 4 or if the °C/°F button is not pressed within 2 seconds, the tester will exit the calibration mode and return to the measurement mode.

4. Immediately press the °C/°F button to switch to the temperature calibration mode. The upper display shows the current measured temperature reading based on the last set offset and the lower display shows the current measured temperature reading based on factory default calibration.

5. Use the INC and DEC key to adjust the upper temperature reading to the known temperature value.

6. Wait for 5 seconds for the tester to automatically confirm the temperature calibration value by displaying “CO” and return to the measurement mode.

Note: To exit this program without confirming the calibration, press the °C/°F button or the HOLD button before the automatic confirmation takes place.

Note: The tester will exit calibration mode with “Er.0” message if the temperature is outside the 0 to 50°C range. Please refer to information under ’Self Diagnostic Messages’.

Notes: The temperature calibration window is +/- 5°C (+/- 9°F) from the default temperature reading.

INC

DEC

INC

DEC

Figure 6: Example of a temperature calibration sequence

Changing Batteries

1. Open the battery compar tment lid (with attached lanyard loop).

2. Remove old batteries; replace with fresh ones. Note polarity

(shown in diagram below).

Electrode Replacement

You can replace the electrode module at the fraction of the cost of a new tester. When the tester fails to calibrate or gives fluctuating readings in calibration standards, you need to change the electrode.

1. With dry hands, grip the ribbed tester collar with electrode facing you. Twist the collar counter

clockwise (see picture A). Save the ribbed tester collar and O-ring for later use.

2. Pull the old electrode module away from the tester.

3. Align the four tabs on the new module so that they match the four slots on the tester (see

picture B).

4. Gently push the module onto the slots to sit it in position. Push the smaller O-ring fully onto

the new electrode module. Push the collar over the module and thread it into place by firmly twisting clockwise.

Note: It is necessary that you recalibrate your tester prior to measurement after an electrode replacement.

After 5 sec, “CO” is displayed signifying automatic confirmation

Roate collar

away from you

Ribbed collar

Insert Electrode Module

Electrode Module

Small O-Ring Small Tab Large Tab

Large O-Ring

Figure 7: Removal of collar from tester

Self-Diagnostic Messages

3 Bars indicates Battery is full (100%)

Low battery

indicator

Over range / Under range

signal

Error

Message

Or / UrOr / Ur

Or / Ur

Or / UrOr / Ur

(Still)

ATC / Or /ATC / Or /

ATC / Or /

ATC / Or /ATC / Or / Ur Ur

Ur (Blinking)

Ur Ur

ErEr

2 Bars indicates 50% of the battery life is left

1 Bar indicates 25% of the battery life is left

Blinking battery casing indicates the need to replace batteries with fresh ones as specified by manufacturer

The sensor electrodes have short cir cuited.

Replacement sensor is not connected properly to the tester during sensor replacement

Measured value or temperature value (for plus models) exceeds its specified maximum or minimum value

Blinking ‘ATC’, ‘Or’ or ‘Ur’ indicates that there is a short or open circuit at the built in temperature sensor

Calibration error due to temperature value not within the

.0.0

specified range Calibration error due to Conductivity/TDS/Salt value not

.1.1

within the specified calibration standard range

Applications

Water quality testing • pools • aquaculture • hydroponics • ecology studies • water and wastewater treatment • boilers • labs and more!

Accessories

Item Eutech Instruments Order Code Oakton Instruments Order Code

ECTESTR, TDSTESTR & SALTESTR ECTDSWPSENNEW OKTDSWPSENNEW

replacement sensor

ECTESTR+ & TDSTESTR+ ECTDSWPSENPLUS OKTDSWPSENPLUS replacement sensor

Warranty

These waterproof Conductivity/TDS/Salt tester series - ECTestr, TDSTestr and SALTTestr are warranted to be free from manufacturing defects for 2 years and electrode module for 6 months. If r epair, adjustment or replacement is necessary and has not been the result of abuse or misuse within the time period, please return the tester – freight prepaid – and correction will be made without charge. Out of warranty products will be repaired on a charge basis.

Return of Items

Authorization must be obtained from your distributor before returning items for any reason.

When applying for authorization, please include information regarding the reason the item(s) are to be returned.

Note: We reserve the right to make improvements in design, construction and appearance of products without notice. Prices are subject to change without notice.

ECTestr Specifications

Large ScreenLarge Screen

Large Screen

Large ScreenLarge Screen EC TesterEC Tester

EC Tester

EC TesterEC Tester Range 0 to 1 990 uS/cm 0 to 1999 uS/cm 0 to 19.90 mS/cm 0 to 19.99 mS/cm 0 to 199.9 uS/cm Resolution 10 uS/cm 1 uS/cm 0.10 mS/cm 0.01 mS/cm 0.1 uS/cm Accuracy +/- 1% FS Calibration point 1 point (± 50% window from factory default) Calibration 200 to 1990 200 to 1999 2.00 to 19.90 2.00 to 19.99 20.0 to 199.9

Standard Range uS/cm uS/cm mS/cm mS/cm uS/cm Temperature

Range in °C 0.0 to 50.0°C 0.0 to 50.0°C Range in °F 32.0 to 122°F 32.0 to 122°F Resolution 0.1°C (0.1°F) 0.1°C (0.1°F) Accuracy ±0.5°C (±0.9°F) ±0.5°C (±0.9°F) Calibration point 1 point 1 point Calibration Window ± 5°C (± 9°F) ± 5°C (± 9°F)

ATC 0 to 50°C Temp Coefficient 2% per °C Normalization Temp 25.0°C Auto Off 8.5 minutes after last key press Operating Temp 0 to 50°C Power Battery 4 X 1.5V”A76" micro alkaline battery Battery Life >150 hrs LCD Display Custom Dual Display27mm(H)X21mm(W) Dimensions Tester: 16.5 cm X 3.8 cm; 90g

Weight Boxed: 22cm X 6cmX 5cm; 170 g

ECTestrlowECTestrlow

ECTestrlow

ECTestrlowECTestrlow

ECTestrlow+ECTestrlow+

ECTestrlow+

ECTestrlow+ECTestrlow+

Yes

from factory default from factory default

ECTestrhighECTestrhigh

ECTestrhigh

ECTestrhighECTestrhigh

ECTestrhigh+ECTestrhigh+

ECTestrhigh+

ECTestrhigh+ECTestrhigh+

ECTestrpure+ECTestrpure+

ECTestrpure+

ECTestrpure+ECTestrpure+

Yes

TDSTestr Specifications

Large ScreenLarge Screen

Large Screen

Large ScreenLarge Screen TDS TesterTDS Tester

TDS Tester

TDS TesterTDS Tester Range 0 to 1990 ppm 0 to 1999 ppm 0 to 10.00 ppt 0 to 10.00 ppt 0 to 199.9 ppm Resolution 10 ppm 1 ppm 0.10 ppt 0.01 ppt 0.1ppm Accuracy +/- 1% FS TDS Factor 0.4 to 1.0 Calibration point 1 point (± 50% window from factory default) Calibration 200 to 1990 200 to 1999 1.00 to 10.00 ppt 20.0 to 199.9

Standard Range ppm ppm ppm Temperature NA Y es NA Yes

Range in °C 0.0 to 50.0 °C 0.0 to 50.0 °C Range in °F 32.0 to 122 °F 32.0 to 122 °F Resolution 0.1 °C (0.1°F) 0.1 °C (0.1°F) Accuracy ±0.5 °C (±0.9 °F) ±0.5 °C (±0.9 °F) Calibration point 1 point 1 point Calibration Window ± 5°C (± 9°F) ± 5°C (± 9°F)

ATC 0 to 50°C Temp Coefficient 2% per °C Normalization Temp 25.0°C Operating Temp 0 to 50°C Power Battery 4 X 1.5V”A76" micro alkaline battery Battery Life >150 hrs LCD Display Custom Dual Display27mm(H)X21mm(W) Dimensions Tester: 16.5 cm X 3.8 cm; 90g

Weight Boxed: 22cm X 6cmX 5cm; 170 g

TDSTestrlowTDSTestrlow

TDSTestrlow

TDSTestrlowTDSTestrlow

TDSTestrlow+TDSTestrlow+

TDSTestrlow+

TDSTestrlow+TDSTestrlow+

from factory default from factory default

TDSTestrhighTDSTestrhigh

TDSTestrhigh

TDSTestrhighTDSTestrhigh

TDSTestrhigh+TDSTestrhigh+

TDSTestrhigh+

TDSTestrhigh+TDSTestrhigh+

TDSTestrpure+TDSTestrpure+

TDSTestrpure+

TDSTestrpure+TDSTestrpure+

SALTTestr Specifications

Large Screen TDS Tester SALTTESTR Range 0 to 10.00 ppt Resolution 0.10 p pt Accuracy +/- 1% FS Calibration point 1 point (± 50% window from factory default) Calibration Standard Range 1.00 to 10.00 ppt ATC 0 to 50°C Temperature Coefficient 2% per °C Normalization Temperature 25.0°C Operating Temperature 0 to 50°C Power Battery 4 X 1.5V”A76" micro alkaline battery Battery Life >150 hrs LCD Display Custom Dual Display27mm(H)X21mm(W) Dimensions Tester: 16.5cm X 3.8cm; 90g

Weight Boxed : 22cm X 6 cm X 5cm; 170g

68X068050 09 / 04 Rev 0