Thermo Fisher Scientific Alpha COND 190 (In the process of updating the brand guideline & product image) - Manual (Page 28)

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9 RELAYS
The α lpha CON 190 features two SPDT non-powered relays; rated for 6A at 110
VAC, 250 VAC maximum. When your process exceeds the set parameters of a
relay set point, the REL 1 or REL 2 indicator will light up.
To set parameters for relay 1 and relay 2, see Setup programs P1.0 and P2.0.
10 TRANSMITTER FUNCTION
If remote data logging is required, a 4-20 mA current loop can be connected. The
current will be proportional to the Conductivity value displayed on the panel and
according to the measurement range selected.
Conductivity Range Range No., R Cell Constant 4 mA current 20 mA current
0.00 – 20.00 µS/cm 1 0.1 0.00 µS/cm 20.00 µS/cm
0.0 – 200.0 µS/cm 2 0.1 0.0 µS/cm 200.0 µS/cm
0.0 – 200.0 µS/cm 3 1 0.0 µS/cm 200.0 µS/cm
0 – 2000 µS/cm 4 1 0 µS/cm 2000 µS/cm
0.00 – 10.00 mS/cm 5 1 0.00 mS/cm 10.0 mS/cm
0.00 – 20.00 mS/cm 6 1 0.00 mS/cm 20.0 mS/cm
0.0 – 200.0 mS/cm 7 1 0.0 mS/cm 200.0 mS/cm
0.0 – 200.0 mS/cm 8 10 0.0 mS/cm 200.0 mS/cm
The 4-20 mA current loop can drive a load resistance of no more than 200 Ω.