Stratos®Pro A4... PH User Manual
Stratos®Pro A4... PH User Manual
Stratos®Pro A4... PH User Manual
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Specifications<br />
I input (TAN) Current input 0/4 ... 20 mA / 50 Ω for external temperature signal<br />
Start/end of scale Configurable –20 ... 200 °C (-4 ... 392 °F<br />
Characteristic Linear<br />
Measurement error 1.3)<br />
154<br />
< 1% current value + 0.1 mA<br />
HOLD input Galvanically separated (OPTO coupler)<br />
Function Switches device to HOLD mode<br />
Switching voltage 0 ... 2 V (AC/DC) HOLD inactive<br />
10 ... 30 V (AC/DC) HOLD active<br />
CONTROL input Galvanically separated (OPTO coupler)<br />
Function Selecting parameter set A/B or flow measurement<br />
Parameter set A/B Control input 0 ... 2 V (AC/DC)<br />
10 ... 30 V (AC/DC)<br />
FLOW Pulse input for flow measurement 0 ... 100 pulses/s<br />
Pulse amplitude 10 ... 30 V DC<br />
Message via 22 mA, alarm contact or limit contacts<br />
Display 00.0 … 99.9 l/h<br />
Parameter set A<br />
Parameter set B<br />
Output 1 0/4 ... 20 mA, max. 10 V, floating (galv. connected to output 2)<br />
Process variable * pH, ORP or temperature<br />
Characteristic Linear<br />
Overrange * 22 mA in the case of error messages<br />
Output filter * PT 1 filter, time constant 0 ... 120 s<br />
Measurement error 1)<br />
Start/end of scale *<br />
< 0.25 % of current value + 0.025 mA<br />
Configurable within selected range<br />
Minimum span pH 2.00 / 200 mV / 20 K / 36 °F