Thermo Fisher Scientific EC-TDS-SaltTestr User Manual

This Instruction Manual is also available for download at: www.eutechinst.com or www.4oakton.com

INSTRUCTION MANUAL

EC/TDS/SALT Testr

Large Screen Waterproof Multi Range

Conductivity/TDS/Salt Tester

with Temperature Display

Introduction

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

• ECTestr11 • ECTestr11+ • TDSTestr11 • TDSTestr11+ • SALTTestr11

Non-plus modelsNon-plus models

Non-plus models (ECTestr11, TDSTestr11 & SALTTestr11) come with user-replaceable

Non-plus modelsNon-plus models
two-pin type sensor and have many user friendly features such as Dual-range
measurement, the Hold function, Automatic Temperature Compensation (ATC) and
Self-Diagnostic Messaging capabilities.

Plus models Plus models

Plus models (ECTestr11+ & TDSTestr11+) come with the user-replaceable cup type

Plus models Plus models
sensor and have additional features such as Multi-range measurement, up to 3-point
calibration and higher resolution measurement.

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 de-ionized water and shake off dry.

Key Functions

KK

ee

y Functiony Function

K

e

y Function

KK

ee

y Functiony Function

- Power on and off the tester
(The tester automatically switches of, if no button is pressed for 8.5 seconds)

- In measurement mode, temperature reading switches between Celsius &

°F °C/

Fahrenheit

- In calibration mode, switches the tester to temperature calibration mode

- In temperature calibration mode, exits calibration mode without confirming
calibrated values

- In measurement mode, switches to hold mode freezing the display.

HOLD

- In hold mode, switches back to measurement mode

- In manual calibration and temper ature calibration modes, exits calibration mode
without confirming calibrated values

- In range selection mode, selects a range

- In measurement mode, enters calibration mode

- In calibration mode, adjusts the calibration values

- In hold mode, enters TDS factor setting mode

- In TDS factor setting mode, adjusts TDS factor

Note:Note:

INC INC

Note:

Note:Note:
battery compar tment

Note:Note:

Note:

Note:Note:
caption of HOLD key is

DEC DEC

INC &

DEC keys are located inside the

INC INC

DEC DEC

..

.

Refer figure 1.

..

For ECTestr11 & ECTestr11+ models, the

‘HOLD/ENT’‘HOLD/ENT’

‘HOLD/ENT’

‘HOLD/ENT’‘HOLD/ENT’

-1- -2-

Figure 1: Battery compartment

+

-

Switching On

ON/OFFON/OFF

Press

ON/OFF key to switch on the tester. The LCD shows the power-up sequence

ON/OFFON/OFF

as illustrated in Figure 2.

When the tester is on, if you do not press a key for 8.5

minutes, the tester automatically switches off to conserve batteries.

MEAS

0.0

uS

26.8

Measurement

mode

ATC

°C

ON/OFF

CAL

MEAS

HOLD

S

pH% R.mV

ATC

pp m

°C °F

°C
°F

Model number &

software revision number

Figure 2: Power Up Sequence

20.00 Ec.p

ms

Au o

Selected range &

upper limit of the range

Range Selection

Depending on the selected model, you can set the tester to limit its reading to a
particular measuring range (PU, LO or HI) or full scale (AUTO). The default setting
is AUTO. When you select a range other than AUTO, the tester can be calibrated
only for that particular range.
conductivity/TDS value than that of the selected measuring range, the LCD shows
‘OR’ error message. Refer
selected model.

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1. Switch off the tester. Press and hold
ON/OFFON/OFF

using

ON/OFF key. Release

ON/OFFON/OFF

2. The tester goes to range selection mode. The LCD shows the currently selected

Range (the default is AUTO) in the lower display. The upper display shows the
maximum possible reading for the selected range. Press
until you see the required range (PU, LO or HI).

Note:Note:

Note: If no key is pressed within 5 seconds, LCD shows power-up sequence and

Note:Note:
tester goes to measurement mode.

3. The tester automatically confirms the last selection if no key is pressed for 5

seconds. Upper display momentarily shows ‘CO’. The LCD shows power-up
sequence and the tester goes to measurement mode.

°F °C/

1

Tes t er

Off

Press & hold
key and switch o n

the tester

20.00

Au o

ON/OFF

°C/°F

Figure 3: Range selection sequence from AUTO to HI for ECTestr11+

If you try to measure a sample which has a higher

SpecifSpecif

icaica

tionstions

Specif

ica

tions section for available ranges of the

SpecifSpecif

icaica

tionstions

°C/°F°C/°F

°C/°F key and then switch on the tester

°C/°F°C/°F

°C/°F °C/°F

°C/°F key.

°C/°F °C/°F

2

HOLD

ENT

ms

2 2 2

HOLD

ENT

200.0

us

2000

us

PU LO

Power-up
Sequence

Auto confirmation oc curs for

the last selecte d range

if no key is presse d for 5 sec.

HOLDHOLD

HOLD key repeatedly

HOLDHOLD

HOLD

ENT

20.00

ms

HI

5 seconds

CO

HI

3

Measurement

1. Press the
when the tester is in measurement mode.

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.

Note:Note:

Note: The LCD indicates ‘Or’ (over range) if the reading is outside the selected

Note:Note:
range. If this occurs, select an appropriate range to suit the reading.

3. The upper display shows the main reading (conductivity/TDS/Salt) of the
solution, automatically temperature compensated (ATC) to normalized temperature
of 25°C. The lower display shows the temperature of the solution.

ON/OFFON/OFF

ON/OFF key to switch on the tester. The ‘MEAS’ indicators appears

ON/OFFON/OFF

HOLD Function

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

HOLD HOLD

1. Press

HOLD key to freeze the measurement. The tester goes to hold mode and

HOLD HOLD
‘HOLD’ indicator is displayed in LCD. The measurements are frozen and the ‘MEAS’
indicator disappears.

HOLDHOLD

2. Press

HOLD key again to release the measurement. The ‘HOLD’ indicator is no

HOLDHOLD
longer displayed. The tester goes back to measurement mode.

MEAS

1500

26.8

mode

ATC

HOLD HOLD

ppm

HOLD

1500

°C

26.8

HOLD modeMeasur ement

Figure 4: HOLD Function

ATC

ppm

°C

MEAS

1535

26.2

Measurement

mode

ATC

ppm

°C

Temperature Unit of Measurement Selection

This feature lets you set the unit of measurement of temperature to either Celsius (°C)
or Fahrenheit (°F).

When the tester is in the measurement mode, press
display toggles between the Celsius and Fahrenheit reading.

ATC

pp

t

MEAS

6.00

°C

25.5

Figure 5: Temperature unit of measurement selection

°C/°F°C/°F

°C/°F button. The temperature

°C/°F°C/°F

MEAS

ATC

pp

t

°F

°C/

6.00

°F

78.0

-3-

About Calibration

50% tolerance

To ensure higher accuracy, the tester must be calibrated on a regular basis.
Calibration can be manual or automatic (only for ECTestr11 & ECTestr11+); calibration
can be 1-point or multi-point. You can choose any combination of the above two
options for calibration. If you calibrate the tester for 1-point, the calibration is applied
for all the measuring ranges. In applications where you need higher accuracy, and
when you intend to measure values in more than one range, it is recommended to
select multi-point calibration.

Selection of Automatic or Manual Calibration

ECTestr11 & ECTestr11+ models support both automatic & manual calibration while
all other models have to be calibrated manually. In automatic calibration, the tester
automatically detects and verifies known conductivity standard solutions (84uS,
1413uS & 12.88mS) . In manual calibration, you can use non-standard solutions
which may be specific for your application.

The factory default is Automatic calibration (Auto). You can enable or disable
automatic calibration as described below (for only ECTestr11 & ECTestr11+ models).

Selection of 1-point or Multi-point Calibration

The factory default is 1-point Calibration. For higher accuracy, it is recommended that
you calibrate the tester for multiple ranges if you intend to measure values in multiple
ranges. You can enable or disable multi-point calibration as described below.

Note:Note:

Note:

If you have selected a specific measuring range for the tester, selecting multi-

Note:Note:
point calibration has no meaning, as the tester can only be calibrated for 1-point
for the selected range. Set the tester to ‘AUTO’ measuring range if you wish to
calibrate multi-points.

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1. Switch off the tester. Press and hold
ON/OFF ON/OFF

ON/OFF key.

ON/OFF ON/OFF

2. The tester goes to auto calibration selection mode. The lower display shows ‘A.CAL’
and the upper display blinks the current choice (‘Yes’ or ‘No’).

Note:Note:

Note:

This mode is available only for ECTestr11 & ECTestr11+ models. For other

Note:Note:
models, go directly to 1-point selection mode, described in step 4 below.

INC INC

Press

DEC DEC

INC or

DEC key to select ‘Yes’ (to enable auto calibration) or ‘No’ (to disable

INC INC

DEC DEC

auto calibration)

Note:Note:

Note:

Note:Note:

NoteNote

Note: Press

NoteNote

°C/°F°C/°F

Press

°C/°F key, if you wish to skip this setting without confirming changes.

°C/°F°C/°F

°C/°F°C/°F

°C/°F key twice, if you wish to return to measurement mode without

°C/°F°C/°F

confirming changes.

HOLD/ENTHOLD/ENT

3. Press

HOLD/ENT key to confirm the selection. The display shows ‘CO’.

HOLD/ENTHOLD/ENT

4. The tester goes to 1-point calibration selection mode. The lower display shows
‘1.Pnt’ and the upper display blinks the current choice (‘Yes’ or ‘No’).

INC INC

Press

DEC DEC

INC or

DEC key to select ‘Yes’ (to enable 1-point calibration) or ‘No’ (to

INC INC

DEC DEC

disable 1-point calibration, i.e. to enable multi-point calibration).

Note:Note:

Note: Press

Note:Note:

5. Press

°C/°F°C/°F

°C/°F key if you wish to skip this setting without confirming.

°C/°F°C/°F

HOLD/ENTHOLD/ENT

HOLD/ENT key to confirm the selection. The display shows ‘CO’ for few

HOLD/ENTHOLD/ENT
seconds and then shows power-up sequence The tester goes to measurement
mode.

aa

tion and mtion and m

a

tion and m

aa

tion and mtion and m

ulti-point calibrulti-point calibr

ulti-point calibr

ulti-point calibrulti-point calibr

INC INC

INC key and then switch on the tester using

INC INC

-4-

aa

a

aa

tion:tion:

tion:

tion:tion:

2

HOLD

1

Tes t er

Off

Press & hold IN C
key and switch on

the tester

ON/OFF

YES

A.CAL

A.CAL

Figure 6: Selecting auto calibrtaion & 1-point calibration for ECTestr11+

ENT

2

HOLD

ENT

CO

A.CAL

3 4

After

1 sec.

YES

HOLD

ENT

CO

4

HOLD

Power-up
Sequence

ENT

Auto Calibration

Auto calibration feature is available only for conductivity in ECTestr11 &
ECTestr11+ models. Make sure that ‘auto calibration’ is enabled as described in
the previous section. Auto calibration is suitable if you use standard conductivity
solutions for calibration process.

If you selected 1-point calibration, you need to choose a calibration standard
corresponds to the selected measuring range of the tester listed below. If you
have selected multi-point calibration & AUTO measuring range, you can choose any
of the calibration standards listed below. During auto calibration, the tester
recognizes the calibration standard if its value is within 50% tolerance. For multi­point calibration (with AUTO measuring range), the tester automatically scans
through all possible calibration points until all of them are calibrated.

Selected Measuring Range Calibration Standard

PU (0 to 200.0 uS/cm) 84 us

LO (0 to 2000 uS/cm) 1413 uS

HI (0 to 20.00 mS/cm) 12.88 mS

AUTO 84 us, 1413 uS, 12.88 mS

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Use fresh calibration standard solutions listed in the above table. Prepare each
solution in two beakers - one for rinsing and the other for calibration. Rinse the
electrode in de-ionized water before calibration.

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1. Switch on the tester. Make sure the tester is in measuring mode. Press
DEC DEC

DEC key to enter conductivity calibration mode.

DEC DEC

2. ‘CAL’ indicator appears in LCD. The display briefly shows ‘CAL’ and the number
of points the tester will be calibrated.

3. The upper display shows the conductivity reading and the lower display
sequentially shows calibration standard values 1413 uS & 12.88 mS (for
ECTestr11) or 84 uS, 1413 uS & 12.88 mS (for ECTestr11+) if the
measuring range of the tester is set to AUTO.

aa

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tion:tion:

tion:

tion:tion:

ds:ds:

ds:

ds:ds:

INC INC

INC or

INC INC

-5- -6-

5

Note:Note:

Note:

If you have selected a specific measuring range for the tester, the lower display

Note:Note:
shows the corresponding calibration standard value that matches the selected
measuring range.

4. Rinse the electrode with the calibration standard that you intend to calibrate and
then dip the electrode in the other beaker with same calibration standard. Swirl
gently to create a homogenous sample and allow time for the reading to stabilize.

Note:Note:

Note: For multi-point calibration, the lower display automatically locks at the

Note:Note:
calibration standard value that closely matches. The tolerance range is ± 50% of
the calibration standard. The tester shows error message ‘Er.1’ if you try to calibrate
with a solution whose conductivity is outside the tolerance range.

Note:Note:

INCINC

Note:

Note:Note:

Press

DEC DEC

INC or

DEC key if you wish to exit from auto calibration, during any of

INCINC

DEC DEC

the above steps.

HOLD/ENT HOLD/ENT

5. Press

HOLD/ENT key to confirm the calibration. LCD shows ‘CO’ for 2 seconds. The

HOLD/ENT HOLD/ENT
calibration is complete and the tester returns to measurement mode, if this is a 1­ point calibration.

6. For multi-point calibration, the tester goes to the next calibration point, lower
display showing next calibration standard values. Rinse the electrode in de-ionized
water and repeat step 4 & 5 to continue calibrating with next calibration standard
solution.

Note:Note:

Note: The tester shows error message ‘Er.0’ and returns to measuring mode if the

Note:Note:
temperature of the calibration solution is not within 0°C to 50°C.

Note:Note:

Note: The tester shows error message ‘Er.1’ if you press

Note:Note:

HOLD/ENT HOLD/ENT

HOLD/ENT key before the

HOLD/ENT HOLD/ENT

tester recognizes the calibration standard.

CAL

0.0

uS

1413

CAL

0.0

uS

3

ATC

1413 uS std. solut ion

3

and automatica lly detects

ATC

the calibration s td.

CAL

1410

uS

1413

Tester dipped in

ATC

HOLD

ENT

Confirmation o f 1st point

CAL

1410

uS

CO

displayed for

2 seconds

ATC

Measurement

Mode

2 54

OR

CAL ATC

CAL

Displayed for

2 seconds and

tester goes to

calibration mo de

1

12.88

The two calibra tion stds. values

displayed sequen tially until

tester finds a matc hing solution

within 50% tolerance.±

6

CAL AT C

1410

mS

12.88

The next calibr ation std.

displayed until te ster finds

a close match wi thin

±

Figure 7: Two-point automatic calibration sequence for ECTestr11

CAL ATC

12.80

mS

12.88

Tester dipped in

12.88 mS std. solution

& automatically detects

the calibration std.

CAL ATC

HOLD

ENT

12.80

mS

CO

Confirmation of 2nd point

displayed for

2 seconds

Measurement

Mode

Manual Calibration

seconds

In manual calibration, the tester allows 1-point calibration for each measuring range.
You can use customized calibration solutions with known conductivity/TDS values to
calibrate the tester. . The following table shows acceptable conductivity/TDS ranges of
calibration solutions for each measuring range. Make sure your calibration solutions
are within the given ranges.

Selected Acceptable Calibration Standard Range
Measuring Range Conductivity TDS/Salt

PU 2.0 - 200.0 uS/cm 2.0 - 200.0 ppm
LO 200 - 2000 uS/cm 200 - 2000 ppm
HI 2.00 - 20.00 mS/cm 1.00 - 10.00 ppt
AUTO Select a calibration standard nearer to application sample

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ds:ds:

ds:

ds:ds:
Use fresh calibration solutions. Measure conductivity/TDS values of the solution with a
meter known to be accurate. Prepare each solution in two beakers - one for rinsing
and the other for calibration. Rinse the electrode in de-ionized water before
calibration.

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tion:tion:

tion:

tion:tion:

1. Switch on the tester. Make sure the tester is in measuring mode. Rinse the
electrode with the calibration standard that you intend to calibrate and then dip
the electrode in the other beaker with same calibration standard. Swirl gently to
create a homogenous sample and allow time for the reading to stabilize.

INC INC

2. Press

DEC DEC

INC or

DEC key to enter calibration mode. The ‘CAL’ indicator appears in

INC INC

DEC DEC
LCD. The display briefly shows ‘CAL’ and the number of points the tester will be
calibrated.

3. The upper display shows the measured conductivity/TDS reading of the solution
based on previous calibration (if any) and the lower display shows the default
(uncalibrated) conductivity/TDS reading.

Note:Note:

Note:

The tester shows error message ‘Er.1’ :

Note:Note:
(a) If the reading is over range (Or) of selected measuring range of the tester ,
or
(b) If the default (uncalibrated) reading is not within the acceptable calibration
standard range.

INCINC

Use

DECDEC

INC and

DEC keys to adjust the upper display to the correct conductivity/TDS

INCINC

DECDEC

value of the calibration solution.

Note:Note:

Note:

The calibration adjustment window is ± 50% from the default reading.

Note:Note:

Note:Note:

Note:

If you do not press

Note:Note:

INC INC

DEC DEC

INC or

DEC key within 5 seconds, the tester shows the

INC INC

DEC DEC
confirmation ‘CO’ and returns to the measurement mode. However, the tester is
not calibrated to new values yet. The old calibration is still active. If this happens,

INC INC

press

DEC DEC

INC or

DEC key once again to enter calibration mode.

INC INC

DEC DEC

4. Wait for 5 seconds for the tester to automatically confirm the calibration by
displaying ‘CO’ and return to the measurement mode.

Note:Note:

Note:

To exit calibration mode without confirming the calibration, press

Note:Note:

HOLD/ENTHOLD/ENT

HOLD/ENT

HOLD/ENTHOLD/ENT

key before the automatic confirmation takes place.

Note:Note:

Note:

The tester shows error message ‘Er.0’ and returns to measuring mode if the

Note:Note:
temperature of the calibration solution is not within 0°C to 50°C.

5. For multi-point calibration rinse the electrode in de-ionized water and repeat
step the above steps with another standard solution.

Meas urement

Mode

2

1

OR

ATC

CAL

3 43

CAL ATC CAL ATC CAL ATC

1400

uS uS uS

1413

After

5 sec.

1410 1410

Displayed for
2 seconds and
Tester goes to

Calibration mode

Figure 8: One-point manual calibration sequence for ECTestr11+

Tester dipped in

1413 uS std. solution

Upper display reading
Adjuste d to the a ctual

Conductivity value of

Cali brati on std . solu tion

TDS Factor Setting

TDS factor is only applicable for TDSTestr11 & TDSTestr11+ models.
The factory default TDS factor is 0.71. You can adjust the TDS factor to suit
different samples of your applications.

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TDS fTDS f

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1. Switch on the tester. Make sure the tester in measurement mode. Press
key to bring the tester to the HOLD mode.

INCINC

2. Press

INC or

INCINC

3. The upper & lower displays of LCD show the last configured TDS factor. The
upper display is adjustable. Use the
The adjustable range is 0.4 to 1.0

Note:Note:

Note:

If you do not press

Note:Note:

confirmation ‘CO’ and returns to measurement mode.

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

1

Meas urement

Mode

.

::

actor

:

actoractor

::

DECDEC

DEC key to enter the TDS factor setting mode.

DECDEC

INC INC

DEC DEC

INC or

DEC key to adjust the TDS factor.

INC INC

DEC DEC

INC INC

DEC DEC

INC or

DEC key within 5 seconds, the tester shows the

INC INC

DEC DEC

2

HOLD

ATC

pp

t

HOLD

6.35

26.8

HOLD mode TDS Factor setting mode

OR

°C

Figure 9: TDS Factor setting

3 43

0.71

0.71 0.71

0.50

After

5 sec.

1413

CO

Confirmation
displayed for

2 seconds

HOLDHOLD

HOLD

HOLDHOLD

0.50

CO

Confirmation
displayed for

2

Temperature Calibration

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

1. Switch on the tester. Make sure the tester is in measuring mode. If required,
°C/°F°C/°F

press

°C/°F key to select the desired unit of measurement for temperature

°C/°F°C/°F

(Celsius or Fahrenheit). Dip the tester into a solution of known temperature
and allow time for the temperature reading to stabilize.

INCINC

2. Press

appears in LCD. Immediately press
calibration mode.

Note:Note:

Note:

Note:Note:
the specified range (Or), the tester shows ‘Er.1’ error message. You can still proceed
to the temperature calibration mode by pressing
key is not pressed within 2 seconds, the tester exits the calibration mode and returns
to the measurement mode.

Measurement

Mode

Set required unit of

measurement for

temperature

3. The upper display shows the measured temperature reading based on the last set

offset (if any) and the lower display shows the default (uncalibrated) temperature
reading based on factory settings. Use
temperature reading to the known temperature value of the solution.

Notes:Notes:

Notes:

Notes:Notes:

4. Wait for 5 seconds for the tester to automatically confirm the temperature

calibration value by displaying ‘CO’ and return to the measurement mode.

Note:Note:

Note:

Note:Note:
°C/°F°C/°F

°C/°F key or

°C/°F°C/°F

Note:Note:

Note:

Note:Note:
temperature of the solution is not within 0°C to 50°C.

DECDEC

INC or

DEC key to bring the tester to the calibration mode. CAL’ indicator

INCINC

DECDEC

When you enter calibration mode, if the conductivity/TDS/salt reading is outside

MEAS

1

7.50 7.50

mS

26.8

Dipped in a solution

of known temperature

Figure 10: Temperature calibration sequence

The temperature adjustment window is ± 5°C (± 9°F) from the default reading.

To exit temperature calibration mode without confirming the calibration, press

HOLD/ENTHOLD/ENT

HOLD/ENT key before the automatic confirmation takes place.

HOLD/ENTHOLD/ENT

The tester shows error message ‘Er.0’ and returns to measuring mode if the

°C/°F°C/°F

°C/°F key to switch to the temperature

°C/°F°C/°F

°C/°F°C/°F

°C/°F key immediately. If the °C/°F

°C/°F°C/°F

2

ATC

OR

°C

2 3

CAL CAL CAL

ATC

°F

°C/

mS

7.50

Calibration

mode

INC INC

DECDEC

INC and

DEC keys to adjust the upper

INC INC

DECDEC

3

26.8 27.5

26.8 26.8

Temperature Calibration mode

MEAS

7.50

27.5

Measurement

OR

°C °C

°C °C

ATC

mS

°C

mode

CAL

27.5

CO

Confirmati on
displayed for

2 seconds

4

°C

-7-

-8-

-9-

Reset

Reset option allows you to restore the calibration and other parameter s back to
factory default settings.

1. Switch off the tester. Press and hold the
using

ON/OFFON/OFF

ON/OFF key. Release

ON/OFFON/OFF

HOLD HOLD

HOLD key.

HOLD HOLD

HOLDHOLD

HOLD key and then switch on the tester

HOLDHOLD

2. The lower display shows ‘rSt’ (reset) and the upper display blinks ‘No’. Use

DECDEC

or

DEC key to

DECDEC

select ‘Yes’ (to proceed with resting) or ‘No’ (to quit without

resetting).

Note:Note:

Note:

Note:Note:

°C/°F°C/°F

Press

°C/°F key if you wish to skip to measurement mode without making any

°C/°F°C/°F

selection.

HOLD HOLD

3. Press

HOLD key to confirm your selection. LCD shows ‘CO’. If ‘Yes’ is selected, the

HOLD HOLD
tester resets to its factory default values as listed below. LCD shows power-up
sequence and tester goes to measurement mode.

HOLD HO LD

1

Tes t e r

Off

ON/OFF

Press & hold HO LD

key and switch on

the tester

2

2

CO

3

Power-up

Sequence

YES

HOLD

INCINC

INC

INCINC

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 cup type electrodes, remove the white plastic cup and insert to thoroughly
clean viscous solutions. Never scratch 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.

Electrode Replacement

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

1. With dry hands, grip the ribbed tester collar with electrode facing you. Twist the
collar counter clockwise (see Figure13-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 of the new electrode module so that they match the four
slots on the tester (see Figure 13-B).

4. Gently push the module into 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:Note:

Note: It is necessary that you recalibrate the tester prior to measurement after

Note:Note:

an electrode replacement.

Accessories

Item Order Code

ECTESTR, TDSTESTR & SALTESTR TDSSENSOR
replacement sensor

ECTESTR+ & TDSTESTR+ TDSSENSORPLUS
replacement sensor

Warranty

The waterproof testers are warranted to be free from manufacturing defects for 1 year
and electrode module for 6 months, unless otherwise specified. If repair, adjustment or
replacement is necessary and has not been the result of abuse or misuse within the
time period specified, 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:Note:

Note: Eutech Instruments/Oakton Instr uments reserve the right to make improvements

Note:Note:
in design, construction and appearance of products without notice. Prices are subject
to change without notice.

Figure 11: Resetting sequence

Parameter Factory Default

User calibration (conductivity/TDS/salt) (Reset)

Temperature unit of measurement Celsius (°C)

Temperature offset 0

Auto calibration (for ECTestr11 & ECTester11+) Enable

1-point calibration Enable

Conductivity calibration factor (for ECTestr11 & ECTester11+) 1.0

TDS factor (for TDSTestr11 & TDSTester11+) 0.71

Changing Batteries

Replace the batteries when the low battery indicator
starts blinking.

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

2. Remove old batteries by pulling plastic ribbon.
Replace with fresh ones. Note polarity as shown in
figure 11.

Figure 11: Battery compartment

-10- -11-

A

Rotate ribbed collar

away from y ou

Ribbed col lar

Figure 13: Removing collar & inserting electrode

Self-Diagnostic Messages

3 Bars indicates Battery is full (100%)

Low battery

indicator

Or / UrOr / Ur

Or / Ur

+

Plastic

-

Ribbon

Over range /
Under range

signal

Error

Message

Or / UrOr / Ur

(Still)

AA

TT

C / Or /C / Or /

A

T

C / Or /

AA

TT

C / Or /C / Or /

Ur Ur

Ur (Blinking)

Ur Ur

ErEr

Er

ErEr

ErEr

Er

ErEr

2 Bars indicates 50% of the battery life is left

1 Bar indicates 25% of the batter y life is left

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

The sensor electrodes short cir cuited

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

Measured value or temperature value exceeds the specified
maximum or minimum value

Blinking ‘ATC’, ‘Or’ or ‘Ur’ indicates that there is a shor t
or open circuit at the built in temperature sensor

Calibration error due to temperature value not within the

.0.0

.0

.0.0

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

.1.1

.1

.1.1

within the specified calibration standard range

B

Ribbed c ollar

Insert Ele ctrode Module

Small

Small Tab

O-Ring

Large

O-Ring

Large Tab

Specifications

ModelModel

Model

ModelModel

Range: PU - 0 to 200.0 uS/cm - 0 to 200.0 ppm ­ LO 0 to 2000 uS/cm 0 to 2000 uS/cm 0 to 2000 ppm 0 to 2000 ppm -

HI 0 to 20.00 mS/cm 0 to 20.00 mS/cm 0 to 10.00 ppt 0 to 10.00 ppt 0 to 10.00 ppt
Resolution: PU - 0.1 uS/cm - 0.1 ppm -

LO 10 uS/cm 1 uS/cm 10 ppm 1 ppm ­ HI 0.10 mS/cm 0.01 mS/cm 0.10 ppt 0.01 ppm 0.10 ppt

Accuracy ± 1% of Full Scale
Calibration Type A uto or Manual Auto or Manual Manual Manual Manual
Calibration Points 1 or 2 points 1, 2 or 3 points 1 or 2 points 1, 2 or 3 points 1 point
Calibration Window ± 50% from each point
Calibration PU - 2.0 - 200.0 uS/cm - 2.0 - 200.0 ppm -

Standard Range:LO 200 - 2000 uS/cm 200 - 2000 uS/cm 200 - 2000 ppm 200 - 2000 ppm ­ (Manual) HI 2.00 - 20.00 mS/cm 2.00 - 20.00 mS/cm 1.00 - 10.00 ppt 1.00 - 10.00 ppt 1.00 - 10.00 ppt

Sensor Type Two-pin Cup Two-pin Cup Two-pin
TDS Factor - - 0.4 to 1.0 (Default 0.71)­Temperature

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

ECTECT

estr11estr11

ECT

estr11

ECTECT

estr11estr11

ECTECT

ECT

ECTECT

estr11+estr11+

estr11+

estr11+estr11+

TDSTTDST

TDST

TDSTTDST

estr11estr11

estr11

estr11estr11

TDSTTDST

TDST

TDSTTDST

estr11+estr11+

estr11+

estr11+estr11+

SALSAL

SAL

SALSAL

TTTT

TT

TTTT

estr11estr11

estr11

estr11estr11

68X068056 Rev 2 May 06