Deltabar S
22
Hauser
Performance characteristics – ceramic process isolating
diaphragms
Reference accuracy –
PMD70, FMD76
The reference accuracy comprises the non-linearity including hysteresis and non-reproducibility in accordance
with the limit point method as per IEC 60770. The data refer to the calibrated span.
The following applies for the root-extracting characteristic curve:
The accuracy data of the Deltabar S is taken into the accuracy calculation of the flow rate with a factor of 0.5.
Total performance –
PMD70, FMD76
The "Total performance" specification comprises the non-linearity including hysteresis, non-reproducibility, the
thermal change of the zero point as well as the influence of the line pressure (p
st
= 70 bar).
Total Error
The total error comprises the long-term stability and the total performance:
Warm-up period –
PMD70, FMD76
• 4...20 mA HART : < 10 s
• PROFIBUS PA: 6 s
• FOUNDATION Fieldbus: 50 s
Influence of the operating
pressure on zero point and
span – PMD70, FMD76
Note!
The influence of the operating pressure on the zero point can be calibrated out.
Thermal change of the zero
output and the output span –
PMD70, FMD76
Measuring cell
% of the set span
25 mbar
• TD 1:1
• TD > 1:1
=
=
±0.15
±0.15 x TD
100 mbar
• TD 1:1 to TD 4:1
• TD > 4:1
=
=
±0.075
(0.012 x TD + 0.027)
500 mbar, 3 bar
• TD 1:1 to TD 15:1
• TD > 15:1
=
=
±0.075
(0.0015 x TD + 0.05252)
Platinum version: 100 mbar, 500 mbar, 3 bar
• TD 1:1
=
±0.05
Measuring cell
% of the set span
500 mbar to TD 1:1
•
0.15
All specifications apply to the temperature range –10...+60°C (+14...+140°F).
Measuring cell
% of URL/year
25 mbar, 100 mbar
•
0.33
500 mbar, 3 bar
•
0.20
Measuring cell
Influence of the operating pressure on the
zero point
Influence of the operating pressure on the
span
25 mbar
0.7 % of URL/7 bar
0.14 % of URL/7 bar
100 mbar
0.175 % of URL/70 bar
0.14 % of URL/70 bar
500 mbar
0.075 % of URL/70 bar
0.14 % of URL/70 bar
3 bar
0.075 % of URL/70 bar
0.14 % of URL/70 bar
Measuring cell
–10...+60 °C
(+14...+140°F)
–20...–10 °C, +60...+85 °C
(–4...+14°F, +140...+185°F)
% of the set span
25 mbar
(0.35 x TD + 0.05)
(0.3 x TD + 0.15)
100 mbar
(0.05 x TD + 0.05)
(0.08 x TD + 0.07)
