10 Technical data PROline Promag 53
122 Endress+Hauser
10.1.4 Output
Output signal Current output:
active/passive selectable, galvanically isolated, time constant selectable (0.01 - 100 s),
full scale value selectable, temperature coefficient: typically 0.003 % o.r./ °F (0.005 %
o.r./ °C); resolution: 0.5 µA
• active: 0/4 to 20 mA, R
L
< 700 Ω (for HART: R
L
≥ 250 Ω)
• passive: 4 to 20 mA, max. 30 V DC, R
i
≤ 150 Ω
Pulse / frequency output:
active/passive selectable, galvanically isolated
• active: 24 V DC, 25 mA (max. 250 mA/20 ms), R
L
> 100 Ω
• passive: open collector, 30 V DC, 250 mA
• Frequency output: full scale frequency 2 - 10000 Hz (f
max
= 12500 Hz),
on/off ratio 1:1, pulse width max. 10 s
• Pulse output: pulse value and pulse polarity selectable, pulse width configurable
(0.05 - 2 s)
Signal on alarm • Current output → failsafe mode selectable
• Pulse/frequency output → failsafe mode selectable
• Relay output → “de-energized” by fault or power supply failure
Details → Page 109
Load see “output signal”
Switching output Relay output (relay 1, relay 2):
Normally closed (NC or break) or normally open (NO or make) contacts available
(default: relay 1 = NO, relay 2 = NC), max. 30 V / 0.5 A AC; 60 V / 0.1 A DC,
galvanically isolated.
Configurable for: error messages, Empty Pipe Detection (EPD), flow direction,
limit values, batching contacts.
Low flow cutoff Switch points for low flow cutoff are selectable
Galvanic isolation All circuits for inputs, outputs, and power supply are galvanically isolated from each
other.
10.1.5 Power supply
Electrical connections see Page 47
Conduit entry Power-supply and signal cables (inputs/outputs):
• Threads for conduit entries,1/2" NPT
Connecting cable for remote version:
• Threads for conduit entries, 1/2" NPT,
Cable specifications see Page 51
To Next Page
Loading...
