Conductivity Measuring - J.P. SELECTA MP-2006 Manual De Instrucciones

When measure conductivity and TDS, connect temperature electrode, according to set
temperature coefficient, meter will automatically compensate conductivity to the value under
25℃. If you don't connect temperature electrode, meter displays the original conductivity of
measured solution which is not been compensated.
When measure salinity, connect temperature electrode, meter will automatically compensate
salinity to the value under 18℃. If you don't connect temperature electrode, meter displays the
original salinity of measured solution which is not been compensated.

4.6.4.1 Conductivity Measuring

Please notice before measure conductivity:
1. Selection of conductive electrode
The conductive electrode with constant 1.0, 10 has two styles: 'bright' and 'platinum
black', electrode cast with platinum is usually called platinum black electrode. Better
measuring range of bright electrode is 0 ~ 3000μS/cm. If the range exceeds 3000μS/cm,
measuring error will be big.
2. When measure high conductivity, usually adopts conductive electrode with big constant. When
conductivity ≥ 20.00mS/cm, you should adopt the electrode with constant 5 or 10. When
conductivity ≥ 100.00mS/cm, you should adopt the electrode with constant 10.
2. Recommended Conductivity Range and relevant electrode Constant
Conductivity range (μS/cm)
0.05～2
2～200
200～2000
2000～20000
5
2000～2×10
Under start mode, if you have conductivity measuring parameter, you can start measuring directly
by pressing 'MEAS' key, otherwise you have to press 'SETUP', select measuring mode and then
select conductivity measuring parameter. (Please refer to 'Setup Measuring Mode' for details).
The display is as follows:
resistivity (Ω·cm)
20M～500K
500K～5K
5K～500
500～50
500～5
Conductivity measuring status
Recommended electrode
-1
constant (cm )
0.01，0.1
0.1，1.0
1.0
1.0，10
10
90