RTA421
Endress+Hauser 3
Input
Number 1
Measured variable Current and voltage
Measuring range Voltage
0/2...10 V, max. voltage 50 V
Ri: 1 MΩ
Current
0/4...20 mA; max. current 150 mA
Ri: 5 Ω
Resolution Voltage
41 mV, 8 Bit
Current
83 μA, 8 Bit
Overrange 10 %
Integration time 4/s
Output
Output signal Loop power supply
Relays
Output signal Terminal 81: 24 V ±20%, 30 mA
Number 1
Galvanic isolation Between power supply and relay outputs
Output signal Binary, switches when alarm set point is reached
Number 2
Contact type SPDT potential free contact per relay
Contact load ≤ 250 VAC, 8(2) A / 30 VDC, 5(2) A
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