Technical information

Deltabar M PMD55
18 Endress+Hauser
Performance characteristics
Reference operating
conditions
• As per IEC 60770 and IEC 61298-1, Sections 5 to 7
• Ambient temperature T
U
= constant, in the range of: +21...+33°C (+70...91 °F)
• Humidity = constant, in the range of: 5...80 % r.H
• Ambient pressure p
U
= constant, in the range of: 860...1060 mbar (12.47...15.37 psi)
• Position of the measuring cell: constant, in the range of: 1° horizontically and 1° vertically
• P1 = high pressure side
• Input of "Lo Trim Sensor" and "Hi Trim Sensor" for lower range value and upper range value
• Measuring span URV - LRV
• Membrane material 316L
• Filling oil: silicone oil
• Side flanges material: AISI 316L
• Supply voltage: 24 V DC ± 3 V DC
• Load with HART: 250 
Reference accuracy The reference accuracy comprises the non-linearity according to limit point setting, hysteresis and
non-reproducibility as per IEC 60770.
The following applies for the root-extracting characteristic curve:
The accuracy data of the Deltabar M is taken into the accuracy calculation of the flow rate with a factor of 0.5.
TD: Turn Down,  ä 8
Thermal stability
TD: Turn Down,  ä 8
Measuring cell
% of the set span
Standard Platinum
10 mbar (0.15 psi)
30 mbar (0.45 psi)
•TD 1:1
•TD > 1:1
=
=
±0.2
±(0.2 x TD)
--
100 mbar (1.5 psi) • TD 1:1 to TD 4:1
•TD > 4:1
=
=
±0.1
±(0.012 x TD + 0.052)
• TD 1:1 to TD 4:1
•TD > 4:1
=
=
±0.075
±(0.012 x TD + 0.027)
500 mbar (7.5 psi)
1 bar (15 psi)
3 bar (45 psi)
16 bar (240 psi)
40 bar (600 psi)
• TD 1:1 to TD 10:1
• TD > 10:1
=
=
±0.1
±(0.0015 x TD + 0.085)
• TD 1:1 to TD 10:1
• TD > 10:1
=
=
±0.075
±(0.0015 x TD + 0.060)
Measuring cell
-10 to +60°C (+14 to +140°F) -40 to -10°C, +60 to +85°C
(–40 to +14°F, +140 to +185°F)
% of the set span
10 mbar (0.15 psi)
30 mbar (0.45 psi)
±(0.31 x TD + 0.5) ±(0.45 x TD + 0.45)
100 mbar (1.5 psi) ±(0.18 x TD + 0.31) ±(0.3 x TD + 0.36)
500 mbar (7.5 psi)
1 bar (15 psi)
3 bar (45 psi)
±(0.08 x TD + 0.32) ±(0.12 x TD + 0.36)
16 bar (240 psi) ±(0.10 x TD + 0.34) ±(0.15 x TD + 0.39)
40 bar (600 psi) ±(0.08 x TD + 0.32) ±(0.37 x TD + 0.34)