53
10 Supplement
VEGABAR 87 • Modbus and Levelmaster protocol
46297-EN-220624
Ʋ Data protocols
Modbus RTU, Modbus ASCII, Levelmaster
Max. transmission rate
57.6 Kbit/s
Dynamic behaviour output
Dynamic characteristics depending on medium and temperature
90 %
100 %
10 %
t
t
T
A
t
t
S
2
1
Fig. 26: Behaviour in case of sudden change of the process variable. t
T
: dead time; t
A
: rise time; t
S
: jump response
time
1 Process variable
2 Output signal
Dead time
≤ 50 ms
Rise time
≤ 150 ms
Step response time
≤ 200 ms (ti: 0 s, 10 … 90 %)
Damping (63 % of the input variable)
0 … 999 s, adjustable via menu item "
Damping
"
Additional output parameter - Measuring cell temperature
Range
-60 … +150 °C (-76 … +302 °F)
Resolution
< 0.2 K
Deviation
Ʋ Range of 0 … +100 °C
(+32 … +212 °F)
±2 K
Ʋ Range of -60 … 0 °C (-76 … +32 °F)
and +100 … +150 °C
(+212 … +302 °F)
typ. ±4 K
Output of the temperature values
Ʋ Indication
Via the display and adjustment module
Ʋ Analogue
Via the current output, the additional current output
Ʋ Digital
Via the digital output signal (depending on the electron-
ics version)
Reference conditions and influencing variables (according to DIN EN 60770-1)
Reference conditions according to DIN EN 61298-1
Ʋ Temperature
+15 … +25 °C (+59 … +77 °F)