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Reset
Reset option allows you to restore the calibration and other parameters back to
factory default settings.
HOLD
HOLD
1. Switch off the tester. Press and hold the HOLD
HOLD
HOLD key and then switch on the tester
using ON/OFF
ON/OFF key. Release HOLD
ON/OFF
ON/OFF
HOLD key.
HOLD
HOLD
ON/OFF
HOLD
2. The lower display shows 'rSt' (reset) and the upper display blinks 'No'. Use
or DEC
DEC
DEC key to
DEC
DEC
select 'Yes' (to proceed with resting) or 'No' (to quit without
resetting).
Note:
Note: Press °C/°F
Note:
Note:
Note:
°C/°F
°C/°F
°C/°F key if you wish to skip to measurement mode without making any
°C/°F
selection.
3. Press HOLD
HOLD
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.
2
HOLD
HOLD
1
CO
Tester
Off
ON/OFF
Press & hold HOLD
key and switch on
the tester
2
Y E S
HOLD
Figure 11: Resetting sequence
Parameter
User calibration (conductivity/TDS/salt)
Temperature unit of measurement
Temperature offset
Auto calibration (for ECTestr11 & ECTester11+)
1-point calibration
Conductivity calibration factor (for ECTestr11 & ECTester11+)
TDS factor (for TDSTestr11 & TDSTester11+)
Changing Batteries
Replace the batteries when the low battery indicator
starts blinking.
1. Open the battery compartment 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-
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.
INC
INC
INC
INC
INC
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
3
collar counter clockwise (see Figure13-A). Save the ribbed tester collar and
O-ring for later use.
Power-up
Sequence
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.
A
Rotate ribbed collar
away from you
Factory Default
(Reset)
Celsius
(°C)
Ribbed collar
0
Figure 13: Removing collar & inserting electrode
Enable
Enable
Self-Diagnostic Messages
1.0
0.71
Low battery
indicator
+
Over range /
Under range
signal
A A A A A T T T T T C / Or /
-
Ur Ur Ur Ur Ur (Blinking)
Plastic
Ribbon
Error
Message
B
Large
Insert Electrode Module
O-Ring
Small
Ribbed collar
Small Tab
Large Tab
O-Ring
3 Bars indicates Battery is full (100%)
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 short circuited
Replacement sensor is not connected properly to the
Or / Ur
Or / Ur
Or / Ur
Or / Ur
Or / Ur
tester during sensor replacement
(Still)
Measured value or temperature value exceeds the specified
maximum or minimum value
C / Or /
C / Or /
C / Or /
C / Or /
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
Er Er Er Er Er.0 .0 .0 .0 .0
specified range
Calibration error due to Conductivity/TDS/Salt value not
Er Er Er Er Er.1 .1 .1 .1 .1
within the specified calibration standard range
-11-
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:
Note:
Note: Eutech Instruments/Oakton Instruments reserve the right to make improvements
in design, construction and appearance of products without notice. Prices are subject
to change without notice.
Specifications
Model
Model
Model
Model
Model
ECT
ECT
ECT
ECT
ECTestr11
estr11
estr11
estr11
estr11
ECT
ECT
ECTestr11+
ECT
ECT
estr11+
estr11+
estr11+
estr11+
TDSTestr11
TDST
TDST
TDST
TDST
estr11
estr11
estr11
estr11
Range:
PU
-
0 to 200.0 uS/cm
-
LO
0 to 2000 uS/cm
0 to 2000 uS/cm
0 to 2000 ppm
HI
0 to 20.00 mS/cm
0 to 20.00 mS/cm
0 to 10.00 ppt
Resolution:
PU
-
0.1 uS/cm
-
LO
10 uS/cm
1 uS/cm
10 ppm
HI
0.10 mS/cm
0.01 mS/cm
0.10 ppt
Accuracy
± 1% of Full Scale
Calibration Type
Auto or Manual
Auto or Manual
Manual
Calibration Points
1 or 2 points
1, 2 or 3 points
1 or 2 points
Calibration Window
± 50% from each point
Calibration
PU
-
2.0 - 200.0 uS/cm
-
Standard Range:LO 200 - 2000 uS/cm 200 - 2000 uS/cm
200 - 2000 ppm
(Manual)
HI 2.00 - 20.00 mS/cm 2.00 - 20.00 mS/cm
1.00 - 10.00 ppt
Sensor Type
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
TDSTestr11+
TDST
TDST
TDST
TDST
estr11+
estr11+
estr11+
estr11+
SAL
SAL
SAL
SAL
SALTT TT TT TT TTestr11
estr11
estr11
estr11
estr11
0 to 200.0 ppm
-
0 to 2000 ppm
-
0 to 10.00 ppt
0 to 10.00 ppt
0.1 ppm
-
1 ppm
-
0.01 ppm
0.10 ppt
Manual
Manual
1, 2 or 3 points
1 point
2.0 - 200.0 ppm
-
200 - 2000 ppm
-
1.00 - 10.00 ppt
1.00 - 10.00 ppt
Cup
Two-pin
68X068056 Rev 2 May 06
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