VEGA VEGAFLEX 81 4 … 20 mA_HART - four-wire - Manual (Page 78)

78
11 Supplement
VEGAFLEX 81 • 4 … 20 mA/HART - four-wire
41825-EN-130314
Gas phase Temperature Pressure
1 bar (14.5 psig) 10 bar (145 psig) 50 bar (725 psig)
Air 20 °C/68 °F 0.00 % 0.22 % 1.2 %
200 °C/392 °F -0.01 % 0.13 % 0.74 %
400 °C/752 °F -0.02 % 0.08 % 0.52 %
Hydrogen 20 °C/68 °F -0.01 % 0.10 % 0.61 %
200 °C/392 °F -0.02 % 0.05 % 0.37 %
400 °C/752 °F -0.02 % 0.03 % 0.25 %
Steam (saturated
steam)
100 °C/212 °F 0.26 % - -
180 °C/356 °F 0.17 % 2.1 % -
264 °C/507 °F 0.12 % 1.44 % 9.2 %
366 °C/691 °F 0.07 % 1.01 % 5.7 %
Characteristics and performance data
Measuring cycle time
< 500 ms
Step response time 6) ≤ 3 s
Max. filling/emptying speed 1 m/min
Ambient conditions
Ambient, storage and transport tempera-
ture
-40 … +80 °C (-40 … +176 °F)
Process conditions
For the process conditions, please also note the specifications on the type label. The lowest value
always applies.
The measurement error from the process conditions is in the specified pressure and temperature
range of below 1 %.
Process pressure
Ʋ Process fitting with PPS GF 40 -1 … 6 bar/-100 … 600 kPa (-14.5 … 87 psi), depending
on the process fitting
Ʋ Process fitting with Al
2
O
3
-1 … +40 bar/-100 … +4000 kPa (-14.5 … +580 psig),
depending on the process fitting
Vessel pressure relating to the flange
nominal stage
see supplementary instructions manual "Flanges ac-
cording to DIN-EN-ASME-JIS"
Process temperature (thread or flange temperature)
Ʋ PPS GF 40 -40 … +80 °C (-40 … +176 °F)
Ʋ FKM (SHS FPM 70C3 GLT) -40 … +150 °C (-40 … +302 °F)
Ʋ EPDM (A+P 75.5/KW75F) -40 … +150 °C (-40 … +302 °F)
Ʋ Silicone FEP coated (A+P FEP-O-
SEAL)
-40 … +150 °C (-40 … +302 °F)
Ʋ FFKM (Kalrez 6375) -20 … +150 °C (-4 … +302 °F)
6) Time span after a sudden measuring distance change by max. 0.5 m in liquid applications, max 2 m with bulk
solids applications, until the output signal has taken for the first time 90 % of the final value (IEC 61298-2).