Thermo Fisher Scientific EcoScan CON 5 & TDS 5 - Manual (Page 8)

EcoScan CON 5 / TDS 5
7
2.8 Setting the Conductivity-to-TDS Conversion Factor (EcoScan
TDS 5 Only)
The EcoScan TDS5 is set to a default conversion factor of 0.67. This should
give good results for most applications (including natural waters and other
applications that calibrate to 442 standard solutions). You can adjust the factor
for different salts, chemicals, or nutrient solutions using the following procedure.
Note the meter allows adjustment of 0.50 to 0.85.
1. Turn meter on and press HOLD key. The “HO” annunciator appears on the
upper left corner of the LCD and the reading freezes.
2. Press CAL key and the LCD will display “F.67” indicating the current factor.
3. Adjust the TDS factor using ∆∆∆∆ (up) or ∇ ∇ ∇ ∇ (down) key.
4. Press ENTER key to confirm and the meter reverts to its measurement
mode.
F.56
326
ppm
HO
F.67