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αlpha pH 200
10 RELAYS
The alpha pH 200 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 lights up.
To set parameters for relay one and relay two, see Setup programs P1.0 and P2.0.
11 TRANSMITTER FUNCTION
If remote data logging is required, a 4-20 mA current loop can be connected. The
current will be proportional to the pH (or ORP) displayed on the panel display.
pH: 0.00 pH – 4 mA; 14.00 pH = 20 mA
ORP: -999 mV = 4 mA; 1000 mV = 20 mA
The 4-20 mA current loop can drive a load resistance of no more than 200 Ω.
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