Thermo Fisher Scientific EC/TDS/SaltTestr 11 User Manual

Page 3

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 INC

INC

INC and DEC

DEC

DEC keys to adjust the upper

temperature reading to the known temperature value of the solution.

Notes:

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

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: To exit temperature calibration mode without confirming the calibration, press

°C/°F

°C/°F key or HOLD/ENT

HOLD/ENT

HOLD/ENT key before the automatic confirmation takes place.

Note:

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

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

Selected

Acceptable Calibration Standard Range

Measuring Range

Conductivity

TDS/Salt

2.0 - 200.0 uS/cm

2.0 - 200.0 ppm

200 - 2000 uS/cm

200 - 2000 ppm

2.00 - 20.00 mS/cm

1.00 - 10.00 ppt

AUTO

Select a calibration standard nearer to application sample

5. For multi-point calibration rinse the electrode in de-ionized water and repeat

step the above steps with another standard solution.

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.

TTTTTo c

o c

o chang

hang

hange

e TDS f

TDS f

TDS factor

actor

actor:::::

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

HOLD

key to bring the tester to the HOLD mode.

2. Press INC

INC

INC or DEC

DEC

DEC key to enter the TDS factor setting mode.

3. The upper & lower displays of LCD show the last configured TDS factor. The

upper display is adjustable. Use the INC

INC

INC or DEC

DEC

DEC key to adjust the TDS factor.

The adjustable range is 0.4 to 1.0

Note:

Note: If you do not press INC

INC

INC or DEC

DEC

DEC key within 5 seconds, the tester shows the

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.

Figure 9: TDS Factor setting

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,

press °C/°F

°C/°F

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

(Celsius or Fahrenheit). Dip the tester into a solution of known temperature

and allow time for the temperature reading to stabilize.

2. Press INC

INC

INC or DEC

DEC

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

appears in LCD. Immediately press °C/°F

°C/°F

°C/°F key to switch to the temperature

calibration mode.

Note:

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

the specified range (Or), the tester shows ‘Er.1’ error message. You can still proceed

to the temperature calibration mode by pressing °C/°F

°C/°F

°C/°F key immediately. If the °C/°F

key is not pressed within 2 seconds, the tester exits the calibration mode and returns

to the measurement mode.

Figure 10: Temperature calibration sequence

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

-7-

-8-

-9-

Manual Calibration
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.

TTTTTo pr

o pr

o preeeeepar

par

pare calibr

e calibr

e calibraaaaation standar

tion standar

tion standards:

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.

TTTTTo be

o be

o begin man

gin man

gin manual calibr

ual calibr

ual calibraaaaation:

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.

2. Press INC

INC

INC or DEC

DEC

DEC key to enter calibration mode. The ‘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 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: The tester shows error message ‘Er.1’ :

(a) If the reading is over range (Or) of selected measuring range of the tester ,

(b) If the default (uncalibrated) reading is not within the acceptable calibration

standard range.

Use INC

INC

INC and DEC

DEC

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

value of the calibration solution.

Note:

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

Note:

Note: If you do not press INC

INC

INC or DEC

DEC

DEC key within 5 seconds, the tester shows the

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,

press INC

INC

INC or DEC

DEC

DEC key once again to enter calibration mode.

4. Wait for 5 seconds for the tester to automatically confirm the calibration by

displaying ‘CO’ and return to the measurement mode.

Note:

Note: To exit calibration mode without confirming the calibration, press HOLD/ENT

HOLD/ENT

key before the automatic confirmation takes place.

Note:

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

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

CAL

ATC

1400

1413

1410

Displayed for

2 seconds and

Tester goes to

Calibration mode

Tester dipped in

1413 uS std. solution

Measurement

Mode

Confirmation
displayed for

2 seconds

After

5 sec.

1413

Upper display reading

Adjusted to the actual

Conductivity value of

Calibration std. solution

CAL

ATC

CAL

ATC

CAL

ATC

6.35

°C

ATC

26.8

0.71

0.50

0.71

HOLD

HOLD mode

TDS Factor setting mode

Measurement

Mode

Confirmation

displayed for

2 seconds

After

5 sec.

HOLD

0.50

CAL

°C

°C °C

MEAS

ATC

7.50

26.8

°C

MEAS

ATC

7.50

27.5

ATC

26.8

27.5

7.50

26.8

°F

°C/

Dipped in a solution

of known temperature

Calibration

mode

Temperature Calibration mode

Measurement

mode

Measurement

Mode

CAL

°C

27.5

Confirmation
displayed for

2 seconds

Set required unit of

measurement for

temperature