Installation Position - Vega VEGADIF 65 Operating Instructions Manual

3 Planning instructions for isolating systems
Minimization of the step
response time
Standard applications
12
8
6
4
2
0
5
DN50
6
(1 mm)
7
500 mbar
Fig. 8: Typical step response times (T90) in s/m for different filling oils depend-
ing on the measuring cell and capillary inner diameter. Ambient temperature =
20 °C
1 Silicone oil
2 High temperature oil
3 Med. white oil
4 Inert oil
5 Nominal width
6 Capillary inner diameter
7 Measuring cell
100 %
90 %
Fig. 9: Presentation of the step response time (T90)
1 Pressure jump
2 Output signal
For minimisation of the step response time, you have to following
options:
•
Bigger capillary inner diameter
•
Shorter capillaries
•
Filling oil with lowest viscosity
3.4

Installation position

When the pressure transmitter is mounted above the lower chemical
seal, the max. height difference H1 according to the following illustra-
DN80 DN50
(2 mm) (1 mm)
3 bar
1
2
T90%
Chemical seal CSB • for VEGADIF 65
1
2
3
4
DN80
(2 mm)
t