VEGA VEGAPULS 61 (≥ 2.0.0 - ≥ 4.0.0) HART - integrated accumulator - Manual (Page 62)

62
11 Supplement
VEGAPULS 61 • HART - integrated accumulator
40792-EN-121011
Specifications apply also to the current output
Temperature drift - Current output
±0.03 %/10 K relating to the 16 mA span max. ±0.3 %
Deviation on the current output by ana-
logue/digital conversion
< ±15 µA
Deviation on the current output due to
strong, high frequency electromagnetic
fields acc. to EN 61326
< ±150 µA
Characteristics and performance data
Measuring frequency
K-band (26 GHz technology)
Measuring cycle time
Ʋ Standard electronics approx. 450 ms
Ʋ Electronics with increased sensitivity
approx.
700 ms
Step response time 1) ≤ 3 s
Tracking speed of the measuring window
max.
1 m/min
Beam angle 2)
Ʋ Encapsulated antenna system 22°
Ʋ Plastic horn antenna 10°
Emitted HF power (depending on the parameter adjustment) 3)
Ʋ Average spectral transmission power
density
-14 dBm/MHz EIRP
Ʋ Max. spectral transmission power
density
+43 dBm/50 MHz EIRP
Ʋ Max. power density in a distance of
1 m
< 1 µW/cm²
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 lower value
always applies.
Vessel pressure
Ʋ Encapsulated antenna system -1 … 3 bar (-100 … 300 kPa/-14.5 … 43.5 psi)
Ʋ Plastic horn antenna -1 … 2 bar (-100 … 200 kPa/-14.5 … 29.0 psig)
Ʋ Version with adapter flange from
DN 150 PP
-1 … 1 bar (-100 … 100 kPa/-14.5 … 14.5 psig)
Process temperature (measured on the
process fitting)
-40 … +80 °C (-40 … +176 °F)
1) 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).
2) Outside the specified beam angle, the energy of the radar signal has a level which is reduced by 50 % (-3 dB)
3) EIRP: Equivalent Isotropic Radiated Power