Pressure Drop Curves; Pressure - Temperature Ratings - Siemens SITRANS FC410 Operating Instructions Manual

Table 11- 12 Process media conditions
Description
Process media temperature (T
Process media density (min to max) [kg/m
Process media gauge max pressure [bar (psi)]
Pressure drop
Pressure temperature ratings
11.6

Pressure drop curves

The pressure drop is dimension-dependent and influenced by process media viscosity and
density. Sensors with undersized process connections experience higher pressure drop due
to reduction in inlet/outlet dimensions.
Note
Pressure drop information
Pressure drop information is available on request.
11.7

Pressure - temperature ratings

Pressure - temperature ratings are determined by process connection material and
applicable standards. The tables below detail the allowed maximum process pressure for
sensor variants with stainless steel and Hastelloy measuring tubes.
With two major exceptions, the pressure rating of the flow sensors is independent of the
process medium temperature. Design rules for flange connections in both the EN1092-1 and
ASME B16.5 standards dictate pressure derating with increasing temperature. The charts
below show the effect of process medium temperature on the pressure ratings for the
flanges within the product program.
FC410 with Modbus
Operating Instructions, 02/2016, A5E33120874-AC
) (min to max) [°C (F)]
s
(lb/ft ]
3 3
Technical data
11.6 Pressure drop curves
Specification
-50 to +200 (-58 to 492)
1 to 5000 (0.06 to 312)
160 (2321) Hastelloy
100 (1450) st. steel
See Pressure drop curves (Page 95)
See Pressure - temperature ratings
(Page 95)
95