Thermo Fisher Scientific CyberScan CON 400 (For units manufactured from March 2010 onwards) - Manual (Page 42)

Instruction Manual CON 400
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7.7 P6.0 Selecting the cell constant
Your meter lets you select a cell constant of K = 1.0, 10, or 0.1.
Use a cell of K = 1.0 for midrange measurements
Use a cell of K = 10 for high range measurements (above 20 mS or 10 ppt).
Use a cell of K = 0.1 for low range measurements (below 20
μS or 10 ppm).
The cell included with your meter has a cell constant of K = 1.0.
From measurement mode
1. Press
SETUP key to enter Set Up mode.
2. Press the MI/S or MR/T keys to scroll through
subgroups until you view parameter P6.0.
3. Press the ENTER key to select parameter 6.1.
4. Press the MI/S or MR/T keys to select the cell
constant between K = 1.0, 0.1, or 10.
5. Press the ENTER key to confirm selection and to
return to the subgroup menu. Press the CAL/MEAS
key to return to measurement mode.
NOTES
When using a cell of K = 0.1, the lowest measuring range
will be: 0 to 1.999
μS (0 to 0.999 ppm). The 0 to 199.9 ms
(10 to 200 ppt) range will not be accessible.
When using a cell of K = 10, the highest measuring range
will be: 0 to 1999 mS (100 to 2000 ppt). The 0 to 19.99
μS
(0.00 to 9.99 ppm) range will not be accessible.
Figure 32 - Selecting cell constant