Vega VEGABAR 86 Operating Instructions Manual page 57

Min./Max. adjustment:
Ʋ Percentage value
Ʋ Pressure value
Zero/Span adjustment:
Ʋ Zero
Ʋ Span
Ʋ Difference between zero and span
Max. permissible Turn Down
Switch-on phase
Start-up time with operating voltage U
Ʋ ≥ 12 V DC
Ʋ < 12 V DC
Output variable
Output signal
Transmission rate
Damping (63 % of the input variable)
Channel Numbers
Ʋ Channel 1
Ʋ Channel 8
Current value
Ʋ Non-Ex, Ex-ia and Ex-d instruments
Dynamic behaviour output
Dynamic characteristics depending on medium and temperature
Fig. 32: Behaviour in case of sudden change of the process variable. t
time
1 Process variable
2 Output signal
Dead time
VEGABAR 86 • Foundation Fieldbus
B
100 %
90 %
1
10 %
t
T
-10 ... 110 %
-20 ... 120 %
-20 ... +95 %
-120 ... +120 %
max. 120 % of the nominal range
Unlimited (recommended 20 : 1)
≤ 9 s
≤ 22 s
digital output signal, Foundation Fieldbus protocol
31.25 Kbit/s
0 ... 999 s, adjustable
Process value
Electronics temperature
12 mA, ±0.5 mA
2
t
A
t
S
: dead time; t
T
≤ 50 ms
11 Supplement
t
: rise time; t : jump response
A S
57