User's Manual

72
11 Supplement
VEGAPULS 64 • 4 … 20 mA/HART - two-wire
51141-EN-160616
HART output values according to HART 7.0
1)
Ʋ PV (Primary Value) Lin. percent
Ʋ SV (Secondary Value) Distance
Ʋ TV (Third Value) Meas. certainty
Ʋ QV (Fourth Value) Electronics temperature
FullledHARTspecication 7.0
Further information on Manufacturer ID,
Device ID, Device Revision
See website of HART Communication Foundation
Accuracy (according to DIN EN 60770-1)
Process reference conditions according to DIN EN 61298-1
Ʋ Temperature +18 … +30 °C (+64 … +86 °F)
Ʋ Relative humidity 45 … 75 %
Ʋ Air pressure 860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)
Installation reference conditions
Ʋ Min. distance to internal installations > 200 mm (7.874 in)
Ʋ Reector Flatplatereector
Ʋ Falsereections Biggest false signal, 20 dB smaller than the useful signal
Deviation with liquids See following diagrams
0,25 m (0.8202 ft)
10 mm (0.3937 in)
- 10 mm (- 0.3937 in)
2 mm (0.079 in)
- 2 mm (- 0.079 in)
0
1
2
3
Fig. 56: Deviation under reference conditions - thread with integrated horn antenna
1 Reference plane
2 Antenna edge
3 Recommended measuring range
1)
Default values can be assigned individually.