56
NivoGuide® 8100 • Two-wire 4 … 20 mA/HART
9 Supplement
58878-EN-190215
Input variable
Measured variable
Level of liquids
Min. dielectric constant of the medium
Ʋ
Cable probes
ε
r
≥ 1.6
Ʋ
Rod probes
ε
r
≥ 1.6
Output variable
Output signal
4 … 20 mA/HART
Range of the output signal
3.8 … 20.5 mA/HART (default setting)
Fulfilled HART specification
7
Signal resolution
0.3 µA
Fault signal, current output (adjustable)
Last valid measured value, ≥ 21 mA, ≤ 3.6 mA
Max. output current
21.5 mA
Starting current
≤ 10 mA for 5 ms after switching on, ≤ 3.6 mA
Load
see load under Power supply
Damping (63 % of the input variable),
adjustable
0 … 999 s
HART output values according to HART 7 (default setting)
1)
Ʋ
First HART value (PV)
Linearised percentage value, level
Ʋ
Second HART value (SV)
Distance to the level
Ʋ
Third HART value (TV)
Measurement reliability, level
Ʋ
Fourth HART value (QV)
Electronics temperature
Indication value - Display and adjustment module
2)
Ʋ
Displayed value 1
Filling height Level
Ʋ
Displayed value 2
Electronics temperature
Resolution, digital
< 1 mm (0.039 in)
Measurement 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)
Mounting, reference conditions
Ʋ
Min. distance to internal installations > 500 mm (19.69 in)
Ʋ
Vessel
metallic, ø 1 m (3.281 ft), centric mounting, process fit
-
ting flush with the vessel ceiling
Ʋ
Medium
Water/Oil (dielectric constant ~2.0)
3)
Ʋ
Mounting
Probe end does not touch the vessel bottom
Sensor parameter adjustment
No gating out of false signals carried out
1)
The output values can be assigned individually.
2)
The indication values can be assigned individually.
3)
With interface measurement = 2.0.
Содержание NivoGuide 8100
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