VEGA D77 Hydrostatic pressure transmitters - Manual (Page 7)

Pressure transmitters D76 and D77 7
12
300
600
900
18 24 30 36
Product description
2 Technical data
2.1 Data
Supply and signal current circuit (analogue transmission, 4 … 20 mA)
Power supply 12 … 36 V DC
Residual ripple of the power supply no influence at U
SS
< 100 mV
Output signal
- terminal insert
analogue transmission (not standardised)
4 … 20 mA
- adjustment insert 4 … 20 mA (adjustable)
Current limitation approx. 22 mA
Fault signal 22 mA
Integration time 0 … 10 s (adjustment time from 10 % … 90 %
of measuring range final value)
Average delay time 85 ms
Connection cable 2-wire
Max. permissible load depending on power supply
see following load diagram
Load in W
Supply voltage
in V
Integrated overvoltage protection (option)
Nominal d.c. spark-over voltage
- protective diode
40 V
- gas separator 650 V
Nominal discharge current
- gas separator
20 kA