Performance Characteristics Of Metallic; Process Isolating Diaphragm - Endress+Hauser Ceraphant PTP31B Operating Instructions Manual

Ceraphant PTP31B, PTP33B
Endress+Hauser
15.3 Performance characteristics of metallic process
isolating diaphragm
15.3.1 Reference operating conditions
• As per IEC 60770
• Ambient temperature T
• Humidity φ = constant, in the range of 5 to 80 % rH
• Ambient pressure p = constant, in the range of:860 to 1 060 mbar (12.47 to 15.37 psi)
A
• Position of measuring cell = constant, in range: horizontal ±1° (see also "Influence of the
installation position" section →  15)
• Zero based span
• Process isolating diaphragm material: AISI 316L (1.4435)
• Filling oil: NSF-H1 synthetic oil in accordance with FDA 21 CFR 178.3570
• Supply voltage: 24 V DC ±3 V DC
• Load: 320 Ω
15.3.2 Measuring uncertainty for small absolute pressure measuring
ranges
The smallest extended uncertainty of measurement that can delivered by our
standards is:
• in range 1 to 30 mbar (0.0145 to 0.435 psi): 0.4 % of reading
• in range < 1 mbar (0.0145 psi): 1 % of reading.
15.3.3 Influence of the installation position
→  15
15.3.4 Resolution
Current output: min. 1.6 μA
Display: can be set (factory setting: presentation of the maximum accuracy of the
transmitter)
15.3.5 Reference accuracy
The reference accuracy contains the non-linearity [DIN EN 61298-2 3.11] including the
pressure hysteresis [DIN EN 61298-23.13] and non-repeatability [DIN EN 61298-2 3.11]
in accordance with the limit point method as per [DIN EN 60770].
Measuring ranges
400 mbar (6 psi)
1 bar (15 psi)
2 to 400 bar (30 to 6 000 psi)
1) Overview of the turn down ranges →  69
2) Ordering information: Product Configurator order code for "Reference accuracy" option "G"
3) Ordering information: Product Configurator order code for "Reference accuracy", option "D"
= constant, in the range of:+21 to +33 °C (+70 to +91 °F)
A
1)
TD
TD 1:1 to TD 5:1
% of calibrated span
2)
Standard Platinum (on request)
±0.5 ±0.3
Technical data
3)
73