Vega VEGAMET 841, Руководство по эксплуатации

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14 Supplement
VEGAMET 841 • 4 … 20 mA
58864-EN-200401
Relay output
Quantity 3 x operating relay, one can be configured as fail safe
relay
Function Switching relay for level, fault signal or pulse relay for
flow/sampling pulse, pump control
Contact Floating spdt
Contact material AgSnO2, hard gold-plated
Switching voltage max. 250 V AC/60 V DC
Switching current max. 1 A AC (cos phi > 0.9), 1 A DC
Breaking capacity
3)
min. 50 mW, max. 250 VA, max. 40 W DC (with
U < 40 V DC)
AC/DC operation Mixed operation with AC/DC voltage is not permitted for
the relay outputs
Min. programmable switching hysteresis 0.1 %
Mode pulse output
Ʋ Pulse length 350 ms
Current output
Quantity 1 x output
Function Level/flow/sampling pulse
Range 0/4 … 20 mA, 20 … 0/4 mA
Resolution 1 µA
Max. load 500 Ω
Fault signal (switch over) 0; < 3.6; 4; 20; 20.5; 22 mA
Accuracy
Ʋ Standard ±20 µA (0.1 % of 20 mA)
Ʋ with EMC interferences ±80 µA (0.4 % of 20 mA)
Temperature error relating to 20 mA 0.005 %/K
Mode pulse output
Ʋ Current pulse 20 mA
Ʋ Pulse length 200 ms
Bluetooth interface
Bluetooth standard Bluetooth 5.0 (downward compatible to Bluetooth
4.0 LE)
Frequency 2.402 ... 2.480 GHz
Max. emitted power +4 dBm
Max. number of participants 1
Effective range typ.
4)
25 m (82 ft)
3)
If inductive loads or stronger currents are switched through, the gold plating on the relay contact surface will be
permanently damaged. The contact is then no longer suitable for switching low-level signal circuits.
4)
Depending on the local conditions