I
NSTRUCTION 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
• EC
• TDSTestr11
• TDS
• SALTTestr11
Non-plus models
Non-plus models
Non-plus models
Non-plus models
Non-plus models (ECTestr11, TDSTestr11 & SALTTestr11) come with user-replaceable
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
Plus models
Plus models (EC & TDS) come with the user-replaceable cup type
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.
This Instruction Manual is also available for download at: www.eutechinst.com or www.4oakton.com
Switching On
Press ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF key to switch on the tester. The LCD shows the power-up sequence
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.
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. If you try to measure a sample which has a higher
conductivity/TDS value than that of the selected measuring range, the LCD shows
‘OR’ error message. Refer Specif
Specif
Specif
Specif
Specifica
ica
ica
ica
ications
tions
tions
tions
tions section for available ranges of the
selected model.
TTTTTo select a r
o select a r
o select a r
o select a r
o select a rang
ang
ang
ang
ange:
e:
e:
e:
e:
1. Switch off the tester. Press and hold °C/°F
°C/°F
°C/°F
°C/°F
°C/°F key and then switch on the tester
using ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF key. Release °C/°F
°C/°F
°C/°F
°C/°F
°C/°F key.
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 HOLD
HOLD
HOLD
HOLD
HOLD key repeatedly
until you see the required range (PU, LO or HI).
Note:
Note:
Note:
Note:
Note: If no key is pressed within 5 seconds, LCD shows power-up sequence and
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.
Figure 2: Power Up Sequence
Figure 3: Range selection sequence from AUTO to HI for EC
Measurement
1. Press the ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF key to switch on the tester. The ‘MEAS’ indicators appears
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:
Note:
Note: The LCD indicates ‘Or’ (over range) if the reading is outside the selected
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.
HOLD Function
This feature lets you freeze the display for a delayed observation.
1. Press HOLD
HOLD
HOLD
HOLD
HOLD key to freeze the measurement. The tester goes to hold mode and
‘HOLD’ indicator is displayed in LCD. The measurements are frozen and the ‘MEAS’
indicator disappears.
2. Press HOLD
HOLD
HOLD
HOLD
HOLD key again to release the measurement. The ‘HOLD’ indicator is no
longer displayed. The tester goes back to measurement mode.
Figure 4: HOLD Function
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 °C/°F
°C/°F
°C/°F
°C/°F
°C/°F button. The temperature
display toggles between the Celsius and Fahrenheit reading.
Figure 5: Temperature unit of measurement selection
KKKKKeeeeey Function
y Function
y Function
y Function
y 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 &
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.
- In hold mode, switches back to measurement mode
- In manual calibration and temperature 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
°F
°C/
Key Functions
Figure 1: Battery compartment
Note:
Note:
Note:
Note:
Note: INC
INC
INC
INC
INC & DEC
DEC
DEC
DEC
DEC keys are located inside the
battery compartment..... Refer figure 1.
Note:
Note:
Note:
Note:
Note: For ECTestr11 & EC models, the
caption of HOLD key is ‘HOLD/ENT’
‘HOLD/ENT’
‘HOLD/ENT’
‘HOLD/ENT’
‘HOLD/ENT’
°C
MEAS
MEAS
ATC
6.00
25.5
pp
t
pp
t
°F
ATC
6.00
78.0
°F
°C/
HOLD
ON/OFF
2000
us
°F
°C/
Press & hold
key and switch on
the tester
°C/°F
20.00
Au o
ms
ENT
HOLD
200.0
us
PU
LO
20.00
ms
HI
CO
HI
Power-up
Sequence
Auto confirmation occurs for
the last selected range
if no key is pressed for 5 sec.
ENT
HOLD
ENT
HOLD
Tester
Off
1
2
3
2
2
2
5 seconds
+
-
°C
MEAS
ATC
1500
26.8
ppm
°C
ATC
1500
26.8
ppm
°C
MEAS
ATC
1535
26.2
ppm
HOLD
HOLD mode
Measurement
mode
Measurement
mode
HOLD
HOLD
-1-
-2-
-3-
ON/OFF
°C °F
°C
°F
MEAS
pp m
HOLD
pH%
R.mV
S
CAL
ATC
20.00
Ec.p
Au o
°C
MEAS
ATC
0.0
26.8
uS
Model number &
software revision number
Selected range &
upper limit of the range
Measurement
mode
ms
