Menu (To Change Settings)
To reset the calibration to factory default condition:
To change celsius / fahrenheit temperature unit:
To adjust the temperature reading:
Useful Notes
1. To avoid cross contamination, rinse with clean water between samples and calibration standards.
2. To maintain tester accuracy, calibrate at regular intervals using values that are close to the intended
sample values.
Changing Batteries (4) A76 or LR44 button cell type
1. Holding the tester with one hand, slide in the thumb to clear the front catch.
2. While still holding the tester, slide in the other thumb to clear the back catch.
3. With both catches are cleared, vertically slide the battery cover off the tester.
4. Change the batteries noting the polarity (flat positive side to the left). Replace
the battery cover onto the tester with the shorter tab above the display locking
the front and back to ensure a watertight seal.
Maintenance
1. Rinse sensor with clean water after each use.
2. Clean the sensor with a soft brush and mild dish soap to remove dirt and grease.
Error Messages
Testers and Accessories Order Information
1. – Batteries are weak and need
replacement soon.
2. bAt Lo (low battery supply) – The battery
power is too low to power on the
instrument and requires immediate
replacement.
3. StBL Err (stability error) – Appears when
calibration is attempted but the reading is
not yet stable. Wait for the reading to
stabilize or manually confirm the calibration
by pressing enter.
4. Or (over range) – The reading is
above the measuring range of tester.
Warranty
This instrument is supplied with a warranty
against manufacturing defects for a period of
one year from the date of purchase.
*The 442 scale simulates fresh water dissolved solids as a mixture
of 4 parts sodium sulfate, 4 parts sodium bicarbonate, and 2 parts
sodium chloride (40% Na2SO4,40% NaHCO3, 20% NaCl).
Operating Instructions For Expert CTS
Conditioning Before First Use
1. Remove the transparent cap and add 20 mm of tap water (approximately ½ full).
2. Recap the Expert CTS tester and soak for at least 15 minutes.
3. The sensor is now activated and ready for use.
Measurement
1. Remove the cap and press the to power on the tester. The tester will begin in the measurement
mode that was used when it was powered off.
2. Dip sensor in at least 30mm of test solution or up to the MAX fill line of the cap.
3. Stir gently while the reading stabilizes and wait for the icon to stop blinking. If you are not using the cap
for measurement, ensure that the sensor has at least 10mm from the bottom & side wall of your container.
4. The will appear on the display indicating that the reading is stable and measurement is complete.
Note: The tester automatically shuts off after 8.5 minutes of non-use to conserve batteries if you forget to turn
it off.
Measurement Parameter Setting
TDS Factor Setting
Press CAL to escape from menu function to measurement mode.
Calibration for Conductivity, TDS, or Salinity
For best results, periodic calibration with an accurate standard is recommended prior to measurement. Use the
calibration standard value that is close to your intended sample value. The tester will retain one calibration value
in each mode (conductivity, TDS, salinity) when the instrument is powered off. The conductivity value can be
calibrated automatically or manually, while the TDS & salinity values require manual calibration. The tester will
begin in the measurement mode that was used when it was powered off. See “Measurement parameter setting”
to change the desired parameter.
Automatic Calibration for Conductivity
1. Remove the cap and press the to power on.
2. Dip the sensor in at least 30mm of calibration standard.
3. Stir gently and press CAL to begin the calibration.
4. The display will show CAL followed by the default value. CAL is indicated on the display during calibration
mode.
5. The icon will stop blinking when the reading is stable and the icon will display.
6. If the reading is within the calibration range of the automatically recognized standards; 80 (84 μS/cm),
1410 (1413 μS/cm), or 12.90 (12.88 mS/cm), the icon is displayed when the automatic calibration
standard value has been detected.
7. Press to accept the auto conductivity standard and finish the calibration. The display will show donE
to confirm the auto calibration.
Manual Calibration
When the conductivity reading is outside calibration range of the automatic conductivity standards or
when TDS or salinity is used, the tester will require manual adjustment.
1. Repeat steps 1 to 5 above.
2. Press to manually adjust the value to the desired reading.
Note: The adjustment will decrease only, however the adjustment will eventually cycle to the highest
available value after decreasing by 40% of the initial value.
3. Press to accept and finish the calibration when the desired value is selected. The display will show
donE to confirm the manual calibration.
4. To abort calibration, press CAL to escape.
Note: The auto conductivity standards are 84μS/cm, 1413μS/cm & 12.88mS/cm.
Ordering Code Product Description
Pocket Tester
EXPERTCTS Conductivity/TDS/salinity pocket tester with
batteries
Conductivity Standard Solutions and Sachets
ECCON100BT 100 μS/cm KCl, 480 mL
ECCON1413BT 1413 μS/cm KCl, 480 mL
ECCON1288BT 12.88 mS/cm KCl, 480 mL
ECCON1413BS
1413 μS/cm KCl, box of 20 x 20 mL sachets
TDS 442* Standard Solutions
EC442300BT 300 ppm 442, 480 mL
EC4421000BT 1000 ppm 442, 480 mL
Salinity (NaCl) Solutions
ECNACL5PPT 5 ppt NaCl, 480 mL
Other Accessories
EXPERTCAP Replacement sensor cap
LANYARD Tester lanyard
donE
PArA tdS.F tdS.F
0.71
tdS.F
1.00
donE tdS.F
tdS.F
donE
PArA PArA
Cond
PArA
tdS
PArA
SALt
PArA
donE
r.SEt r.SEt
nO
r.SEt
y
ES
r.SEt
MENU
MENU
MENU MENU
r.SEt dEG dEG
C°CdEG
F°F
donE dEG
ENTER
dEG t.CAL 78.9
78.9°F
78.9
77.0°F
t.CAL
ENTER
ENTERENTER
ENTER
ENTER
ENTER
ENTER
ENTER
