VEGA VEGAFLEX 83 4 … 20 mA_HART two-wire Rod and cable probe - PFA insulated With SIL qualification - Manual (Page 83)

83
12 Supplement
VEGAFLEX 83 • 4 … 20 mA/HART two-wire
44228-EN-130823
The following table shows the resulting deviation for some typical gases and vapours. The specified
values refer to the distance. Positive values mean that the measured distance is too large, negative
values that the measured distance is too small.
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 10) ≤ 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 Clamp, flange version ≤ 2"/DN 50 -0.5 … +16 bar/-50 … +1600 kPa (-7.3 … +232 psig),
depending on the process fitting
Ʋ Clamp, flange version > 2"/DN 50 -0.2 … +16 bar/-20 … +1600 kPa (-2.9 … +232 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 FKM (SHS FPM 70C3 GLT) -40 … +150 °C (-40 … +302 °F)
Ʋ EPDM (A+P 75.5/KW75F) -40 … +150 °C (-40 … +302 °F)
10) 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).