VEGA VEGAFLEX 86 4 … 20 mA_HART two-wire User Manual

Page 84

11 Supplement

VEGAFLEX 86 • 4 … 20 mA/HART two-wire

41844-EN-130612

Fig. 49: Measuring ranges - VEGAFLEX 86
1 Reference plane

2 Probe length L

3 Measuring range (default setting refers to the measuring range in water)

4 Upper dead band (see diagrams under Accuracy - grey section)

5 Lower dead band (see diagrams under Accuracy - grey section)

Output variable
Output signal

4 … 20 mA/HART

Range of the output signal

3.8 … 20.5 mA/HART (default setting)

Fulfilled HART specification

Signal resolution

0.3 µA

Failure 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)

Ʋ First HART value (PV)

Linearised percentage value, level (current output 1)

Ʋ Second HART value (SV)

Distance to level (current output 2 - if available)

Ʋ Third HART value (TV)

Measurement certainty, level

Ʋ Fourth HART value (QV)

Electronics temperature

Ex-d-ia versions are not suitable for HART multidrop operation
Indication value - DIsplay and adjustment module

Ʋ Displayed value 1

Filling height Level

Ʋ Displayed value 2

Electronics temperature

Resolution, digital

< 1 mm (0.039 in)

Output variable - Second current output
For details on the operating voltage see chapter "Voltage supply"
Output signal

4 … 20 mA (passive)

Range of the output signal

3.8 … 20.5 mA (default setting)