4-electrode conductivity measurement. High measuring accuracy

4-electrode conductivity measuring system

Technical data measuring cell download

4 electrodes conductivity measurement with high measurement accuracy

even if the contacts are dirty.
The 4 electrode conductivity measuring cells LM4E are available with cell constants of 0.5, 1.0, 2.0 and 3.0. By putting on different caps it is very easy to choose between cell constant 1, 2 and 3.

The LFTR 40 transmitter is plugged directly onto the 4-electrode conductivity sensor , so that there is no need for any wiring work between the sensor and the transmitter and no cable resistances can be included in the measurement result. From the transmitter it then goes directly to the PLC, whereby the cable length is irrelevant.
A measuring range from 0...120 µS/cm to 0...1200 mS/cm is covered. In between, the finest gradations are possible by changing the measuring cell and by moving jumpers.
The media temperature is measured by NTC and is used for temperature compensation of the conductivity as TK-nat.
The media contacting materials are electrographite , titanium and EPDM. The housing of the measuring cells and the immersion fitting are made of PP.
Thus, a very inexpensive measuring unit is available as immersion fitting TA 40 or as fitting for installation in fittings as 2 ¼" and 2 ¾".
0022.4300 TA40 head with cable gland PG9

19,80 EUR
plus 19% tax
0022.4020 TA40 pipe 20 cm for immersion fitting
38,00 EUR
plus 19% tax
0022.4050 TA40 pipe 50 cm for immersion fitting
40,00 EUR
plus 19% tax
0022.4100 TA40 pipe 100 cm for immersion fitting
43,00 EUR
plus 19% tax
0022.0476 TA40 connector  is used to connect 2 tubes.
is used to connect 2 tubes TA40. 
26,40 EUR
plus 19% tax
0022.4490 PVC-U fitting, 2 1/4" with 2-fold gluing sleeve
8,80 EUR
plus 19% tax
0022.4500 TA40 adapter ring d=63
for screw connection 2 3/4 "
Outer diameter: 78.4mm
26,50 EUR
plus 19% tax
0022.4510 PVC-U fitting, 2 3/4" with 2-fold gluing sleeve
12,00 EUR
plus 19% tax
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