Vega VEGAPULS 69 - Page 70

70
11 Supplement
VEGAPULS 69 • Foundation Fieldbus
47251-EN-160815
Variablesinuencingmeasurementaccuracy
Temperature drift - Digital output ±3 mm/10 K, max. 10 mm
Characteristics and performance data
Measuring frequency
W-band(79GHztechnology)
Measuring cycle time approx. 700 ms
Step response time
2)
≤3s
Beam angle
3)
Ʋ Plastic horn antenna 3.5°
Ʋ Metal-jacketed lens antenna 4°
Emitted HF power (depending on the parameter adjustment)
4)
Ʋ Average spectral transmission power
density
-3dBm/MHzEIRP
Ʋ Max. spectral transmission power
density
+34dBm/50MHzEIRP
Ʋ Max. power density at a distance of
1 m
< 3 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specicationsonthetypelabel.Thelowestvalue
always applies.
Process temperature
Antenna lens Seal Process temperature (measured on the process
tting)
PEEK FKM (SHS FPM 70C3
GLT)
-40 … +130 °C (-40 … +266 °F)
-40 … +200 °C (-40 … +392 °F)
EPDM (COG AP302) -40 … +130 °C (-40 … +266 °F)
PP FKM (SHS FPM 70C3
GLT)
-40 … +80 °C (-40 … +176 °F)
EPDM (COG AP310) -40 … +80 °C (-40 … +176 °F)
Ambient temperature - Process temperature
2)
Time span (after a sudden measuring distance change of max. 2 m in bulk solids applications) until the output
signalhastakenon90%ofthenalvalueforthersttime(IEC61298-2).
3)
 Outsidethespeciedbeamangle,theenergyleveloftheradarsignalis50%(-3dB)less.
4)
EIRP: Equivalent Isotropic Radiated Power.