Chapter 5
Conductivity Measurement Module
78
Orion Versa Star Pro Meter User Manual
Thermo Scientific
TDS Mode Menu
Main Menu
Settings
Details
Read Type
Auto-Read, Timed,
Single-Shot, Continuous
For Timed and Single-Shot, set the time in hours,
minutes, seconds using the arrow keys
Cell K
0.475
Enter the nominal cell constant (K) value of the
conductivity probe; value is used when
performing an automatic conductivity calibration
TDS Factor
Linear, ISO/EN 27888
0.49
Set the TDS factor type used to convert
conductivity to TDS measurements; enter a 0.02
to 9.99 value for the Linear TDS factor type
Ref. Temperature
5°C, 10°C, 15°C, 20°C, 25°C
Set the reference temperature that all displayed
TDS measurements will be reported to using the
selected temperature compensation
Temp.
Compensation
Linear, nLFn, nLFu, EP, Off
Set the temperature compensation type used to
calculate and report TDS measurements at the
selected reference temperature
Temperature Coeff. 2.10
Enter the temperature coefficient value for linear
temperature compensation
Stability
Smart, Fast, Medium, Slow
Set when a measurement is recognized as
stable
Averaging
Off, Automatic Smart
Set averaging for faster measurement stability
Alarm
Limit Alarm
Off, On
Set high and low limit values to activate alarm
Set Point Alarm Off, On
Set a base and offset value to activate alarm
Cell Type
Standard, USP
Select Standard for most conductivity probes or
USP for ultra-pure water 2-cell conductivity probe
Detailed information on these features is available in the
Appendix
section of this user manual.
