OPERATION:
•The meter is supplied complete with a 9V battery. Slide off the battery com- partment cover on the back of the meter. Install the battery while paying attention to its polarity.
•Connect the probe to the meter se- curely by aligning the pins with the
plug in.
• Make sure that the meter has been calibrated before taking any measure- ments (see Calibration Procedure)
•Immerse the tip (4 cm) of the EC/TDS probe into the sample. If possible use plastic beakers or containers to mini- mize any EMC interference.
•Turn the instrument on by pressing the ON/OFF key.
•Wait for the temperature sensor to reach the thermal equi- librium before taking any measurements.
•After use, the instrument should be switched off and the probe should be cleaned and dried. Whenever needed, use alcohol for better cleaning.
CALIBRATION PROCEDURE:
•Clean the probe with alcohol and let it dry.
•Open a sachet of conductivity calibration solution (see Specifications) and immerse the probe mak- ing sure that the metal pins are completely submerged.
•Wait until the thermal equilibrium is reached and
the reading is stable.
• Adjust the calibration trimmer on the rear of the instrument with the supplied screwdriver until the display shows:
"1410" µS/cm for SM301 "5.0" mS/cm for SM302 "1380" mg/L (ppm) for SM401 "6.4" g/L (ppt) for SM402
•The calibration is now complete and the meter is ready for use.
The instrument should be
BATTERY REPLACEMENT:
When the battery becomes weak the meter will display "V". When the low battery indicator appears, the battery has only about 50 hours of working time left. A low battery will result in unreliable measurements. It is recommended to replace im- mediately the battery.
Battery replacement must only take place in a
Turn the meter off, slide off the battery compartment cover at the rear of the meter and replace the 9V battery with a new one. Make sure the battery contacts are tight and secure, seat the battery in its compartment and insert the cover again.
WARRANTY:
This instrument is warranted from all defects in materials and manufacturing for a period of two years from the date of purchase.
The electrode is warranted for a period of 6 months.
If during this period, the repair or replacement of parts is required, where the damage is not due to negligence or erroneous operation by the user, please return the parts to either dealer or our office and the repair will be effected free of charge.
Note: We reserve the right to modify the design, construction and appearance of our products without advance notice.