Deltabar S PMD70/75 FMD76/77/78

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Deltabar S
Performance characteristics – ceramic process isolating
diaphragms
Reference accuracy –
PMD70, FMD76
The reference accuracy comprises the non-linearity (terminal based), hysteresis and non-reproducibility 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 are taken
into the accuracy calculation of the flow rate with a factor of 0.5.
Measuring cell
% of the set span
25 mbar (0.375 psi)
• TD 1:1
• TD > 1:1
=
=
±0.15
±0.15 x TD
100 mbar (1.5 psi)
• TD 1:1 to TD 4:1
•TD > 4:1
=
=
±0.075
(0.012 x TD + 0.027)
500 mbar (7.5 psi), 3 bar (45 psi)
• TD 1:1 to TD 15:1
•TD > 15:1
=
=
±0.075
(0.0015 x TD + 0.05252)
Platinum version:
100 mbar (1.5 psi), 500 mbar (7.5 psi), 3 bar (45 psi)
•TD 1:1 = ±0.05
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 static pressure (p st = 70 bar (1050 psi)).
All specifications apply to the temperature range –10 to +60 °C (+14 to +140 °F) and a turn down of 1:1.
Measuring cell
% of the set span
500 mbar (7.5 psi) • 0.15
Total error
The total error comprises the long-term stability and the total performance.
All specifications apply to the temperature range –10 to +60 °C (+14 to +140 °F) and a turn down of 1:1.
Measuring cell
% of URL/year
25 mbar (0.375 psi), 100 mbar (1.5 psi) • 0.33
500 mbar (7.5 psi), 3 bar (45 psi) • 0.20
Warm-up period –
PMD70, FMD76
Influence of the operating
pressure on zero point and
span – PMD70, FMD76
• 4 to 20 mA HART: < 10 s
• PROFIBUS PA: 6 s
• FOUNDATION Fieldbus: 50 s
Measuring cell
Influence of the operating pressure on the
zero point
Influence of the operating pressure on the
span
25 mbar (0.375 psi) 0.7 % of URL/7 bar (105 psi) 0.14 % of URL/7 bar (105 psi)
100 mbar (1.5 psi) 0.175 % of URL/70 bar (1050 psi) 0.14 % of URL/70 bar (1050 psi)
500 mbar (7.5 psi) 0.075 % of URL/70 bar (1050 psi) 0.14 % of URL/70 bar (1050 psi)
3 bar (45 psi) 0.075 % of URL/70 bar (1050 psi) 0.14 % of URL/70 bar (1050 psi)
Note!
The influence of the operating pressure on the zero point can be corrected.
22 Endress+Hauser
AoteWell International.inc sales@aotewell.com Tel: +852-6563-2160