73
11 Supplement
NCR-84 Two-wire 4 … 20 mA/HART
51141-EN-181127
2
1
3
2
1
3
Fig. 57: Data of the input variable
1 Reference plane (depending on the antenna system)
2 Measured variable, max. measuring range
3 Utilisable measuring range (depending on the antenna system)
Max. measuring range
30 m (98.43 ft)
Recommended measuring range (depending on the antenna system)
Ʋ Thread with integrated horn antenna
¾"
up to 10 m (32.81 ft)
Ʋ Thread with integrated horn antenna
1½"
up to 20 m (65.62 ft)
Ʋ Plastic horn antenna
up to 30 m (98.43 ft)
Ʋ Flange, hygienic fitting with encapsu-
lated antenna system ≥DN 50, 2"
up to 25 m (82.02 ft)
Ʋ Flange, hygienic fitting with encapsu-
lated antenna system ≥DN 80, 3"
up to 30 m (98.43 ft)
Output variable
Output signal
4 … 20 mA/HART
Range of the output signal
3.8 … 20.5 mA/HART (default setting)
Signal resolution
0.3 µA
Resolution, digital
1 mm (0.039 in)
Fault signal, current output (adjustable) mA-value unchanged 20.5 mA, 22 mA, < 3.6 mA
Max. output current
22 mA
Starting current
≤ 3.6 mA; ≤ 10 mA for 5 ms after switching on
Load
See load resistance under Power supply
Damping (63 % of the input variable),
adjustable
0 … 999 s
HART output values according to HART 7.0
4)
Ʋ PV (Primary Value)
Lin. percent
Ʋ SV (Secondary Value)
Distance
Ʋ TV (Third Value)
Measurement reliability
Ʋ QV (Fourth Value)
Electronics temperature
4)
Default values can be assigned individually.
925-0373 Rev A