LaMotte CDS 5000 Conductivity Meter - Manual (Page 8)

TESTING WATER
CONDUCTIVITY
1. Press “°C” button to turn the meter on.
2. Set TDS and SLOPE knobs to the 12 o’clock position.
NOTE: If meter was calibrated according to procedure on page 7,
leave SLOPE knob set in the same position.
3. Insert temperature and conductivity probes at least 1/2" into sample.
4. Gently stir with conductivity probe until reading stabilizes. Press
“
mS/ppm” button. Record reading as msiemens/cm.
5. If a 1 appears on the far left side of the display, the reading is out of
range. Repeat procedure using “mS/ppt” button. Record as
msiemens/cm. To convert to
msiemens/cm, multiply reading by 1000.
Record as
msiemens/cm.
6. Press “OFF” button when finished testing. Rinse probe with distilled
water and dry thoroughly before storing.
TOTAL DISSOLVED SOLIDS
1. Set TDS knob to desired multiplication factor.
NOTE: 0.7 is a commonly used multiplication factor.
2. Press “°C” button to turn the meter on.
3. Set SLOPE knob to the 12 o’clock position.
NOTE: If meter was calibrated according to procedure on page 7,
leave SLOPE knob set in the same position.
4. Insert temperature and conductivity probes at least 1/2" into sample.
5. Gently stir with conductivity probe until reading stabilizes. Press
“
mS/ppm” button. Record reading as msiemens/cm.
6. If a 1 appears on the far left side of the display, the reading is out of
range. Repeat procedure using “mS/ppt” button. Record as
msiemens/cm. To convert to
msiemens/cm, multiply reading by 1000.
Record as
msiemens/cm.
7. Press “OFF” button when finished testing. Rinse probe with distilled
water and dry thoroughly before storing.
8