Deltabar M PMD75B

Summary

Product identification

• Product Name: Deltabar PMD75B
• Product Type: Digital differential pressure transmitter with metal process membrane

Applications

• Pressure measuring ranges: up to 250 bar (gauge and absolute), and 40 bar (differential pressure)
• Static pressure: up to 420 bar
• Accuracy: up to ±0.035%

Input

Measured variable

• Differential pressure
• Absolute pressure
• Gauge pressure

Measuring range

The following tables detail measuring ranges for different measuring cells and pressure ratings (PN).

Standard PN 160 / 16 MPa / 2400 psi:

• Measuring cells: 10 mbar (0.15 psi) to 40000 mbar (600 psi)
• Maximum Working Pressure (MWP): Ranges from 100 bar (1500 psi) to 160 bar (2400 psi) depending on the cell.
• Overpressure Limit (OPL): Ranges from 150 bar (2250 psi) to 160 bar (2400 psi).
• Burst Pressure: Ranges from 690 bar (10005 psi) to 1320 bar (19140 psi).

Standard PN 250 / 25 MPa / 3626 psi:

• Measuring cells: 100 mbar (1.5 psi) to 40000 mbar (600 psi)
• Maximum Working Pressure (MWP): Typically 250 bar (3626 psi).
• Overpressure Limit (OPL): Typically 250 bar (3626 psi).
• Burst Pressure: Ranges from 1320 bar (19140 psi).

Option PN 320 / 32 MPa / 4641 psi:

• Measuring cells: 100 mbar (1.5 psi) to 40000 mbar (600 psi)
• Maximum Working Pressure (MWP): Typically 320 bar (4641 psi).
• Overpressure Limit (OPL): Typically 320 bar (4641 psi).
• Burst Pressure: Ranges from 1320 bar (19140 psi).

Option PN 420 / 42 MPa / 6092 psi:

• Measuring cells: 100 mbar (1.5 psi) to 40000 mbar (600 psi)
• Maximum Working Pressure (MWP): Typically 420 bar (6092 psi).
• Overpressure Limit (OPL): Typically 420 bar (6092 psi).
• Burst Pressure: Ranges from 1320 bar (19140 psi).

Gauge or Absolute Pressure Measuring Cells:

• Measuring Cells: 160 bar (2400 psi) and 250 bar (3750 psi).
• Maximum measuring range: Up to 160 bar (2400 psi) or 250 bar (3750 psi).
• Smallest calibratable span: 40 bar (600 psi) for 160 bar cell, 40 bar (600 psi) for 250 bar cell.
• Maximum Working Pressure (MWP): 160 bar (2400 psi) or 250 bar (3750 psi).
• Overpressure Limit (OPL): 240 bar (3600 psi) or 375 bar (5625 psi).
• Burst Pressure: 1320 bar (19140 psi).

Minimum static pressure

• For silicone oil at reference operating conditions: 25 mbar (0.0375 psi) abs.
• For silicone oil at 85 °C (185 °F): up to 250 mbar (4 psi) abs.
• For gauge or absolute sensors with silicone oil at reference conditions: 10 mbar (0.15 psi) abs.
• For gauge or absolute sensors with silicone oil at 85 °C (185 °F): up to 10 mbar (0.15 psi) abs.

Output

Output signal

• Current Output: 4 to 20 mA with HART communication protocol (2-wire).
  • Operating modes: 4.0 to 20.5 mA, NAMUR NE 43 (3.8 to 20.5 mA - factory setting), US mode (3.9 to 20.8 mA).
• PROFINET with Ethernet-APL: 10BASE-T1L, 2-wire, 10 Mbit.

Signal on alarm

• 4 to 20 mA HART: Configurable max alarm (21.5 to 23 mA) or min alarm (< 3.6 mA - factory setting).
• PROFINET with Ethernet-APL: According to "Application layer protocol for decentralized periphery", Version 2.4, and diagnostics according to PROFINET PA Profile 4.02.

Load

• 4 to 20 mA HART: Maximum load resistance calculated as (Supply voltage - 1.5 V) / 0.023 A.

Damping

• Adjustable from 0 to 999 seconds.
• Factory setting: 1 s.

Linearization

• User-defined linearization tables of up to 32 value pairs can be entered.

Protocol-specific data

• HART:
  • Manufacturer ID: 17 (0x11 hex)
  • Device type ID: 0x1131
  • Device revision: 1
  • HART specification: 7
  • DD revision: 1
  • Minimum load: 250 Ohm
• PROFINET with Ethernet-APL:
  • Protocol: Application layer protocol for decentral device periphery and distributed automation, Version 2.4
  • Communication type: Ethernet Advanced Physical Layer 10BASE-T1L
  • Conformance Class: Conformance Class B
  • Netload Class: Netload Class II
  • Baud rates: Automatic 10 Mbit/s
  • Cycle times: From 32 ms
  • Media Redundancy Protocol (MRP): Yes
  • System redundancy support: System redundancy S2 (2 AR with 1 NAP)
  • Device profile: Application interface identifier 0xB310
  • Generic device: Manufacturer ID 0x11, Device type ID A231

Power supply

• Analog/HART:
  • Ex d, Ex e, non-Ex: 10.5 to 35 VDC
  • Ex i: 10.5 to 30 VDC
• PROFINET over Ethernet-APL: 9.6 to 15 VDC, 540 mW.

Electrical connection

Terminals

• Supply voltage and internal ground terminal: 0.5 to 2.5 mm² (20 to 14 AWG)
• External ground terminal: 0.5 to 4 mm² (20 to 12 AWG)

Cable specification

• Plastic cable entry: Ø5 to 10 mm (0.2 to 0.38 in)
• Nickel-plated brass cable entry: Ø7 to 10.5 mm (0.28 to 0.41 in)
• Stainless steel cable entry: Ø7 to 12 mm (0.28 to 0.47 in)
• PROFINET with Ethernet-APL:
  • Cable type A
  • Cable capacitance: 45 to 200 nF/km
  • Loop resistance: 15 to 150 Ω/km
  • Cable inductance: 0.4 to 1 mH/km

Performance characteristics

Response time

• HART: Acyclic: min. 330 ms, typically 590 ms. Cyclic (burst): min. 160 ms, typically 350 ms.
• PROFINET with Ethernet-APL: Cyclic: min. 32 ms.

Reference operating conditions

• As per IEC 62828-2.
• Ambient temperature: +22 to +28 °C (+72 to +82 °F).
• Humidity: 5 to 80 % rF ± 5 %.
• Ambient pressure: 860 to 1060 mbar (12.47 to 15.37 psi).

Total performance

Calculated as ± √ ((E1)² + (E2)² + (E3)²), where E1 is reference accuracy, E2 is ambient temperature effect, and E3 is static pressure effect.

Resolution

• Current output: <1 μA

Long-term stability

• 10 mbar (0.15 psi) and 30 mbar (0.45 psi) measuring cell:
  • 1 year: ±0.20 %
  • 5 years: ±0.28 %
  • 10 years: ±0.31 %
  • 15 years: ±0.34 %
• 100 mbar (1.5 psi) measuring cell:
  • 1 year: ±0.08 %
  • 5 years: ±0.12 %
  • 10 years: ±0.20 %
  • 15 years: ±0.28 %
• 500 mbar (7.5 psi) to 40 bar (600 psi) measuring cells:
  • 1 year: ±0.025 %
  • 5 years: ±0.05 %
  • 10 years: ±0.10 %
  • 15 years: ±0.15 %
• 160 bar (2 400 psi) and 250 bar (3 750 psi) gauge/absolute measuring cells:
  • 1 year: ±0.05 %
  • 5 years: ±0.07 %
  • 10 years: ±0.10 %
  • 15 years: ±0.15 %

Response time T63 and T90

• 10 mbar (0.15 psi) and 30 mbar (0.45 psi) sensor:
  • Dead time (t1): maximum 50 ms
  • Time constant T63 (t2): maximum 450 ms
  • Time constant T90 (t3): maximum 1100 ms
• 100 mbar (1.5 psi) sensor:
  • Dead time (t1): maximum 50 ms
  • Time constant T63 (t2): maximum 120 ms
  • Time constant T90 (t3): maximum 200 ms
• All other sensors:
  • Dead time (t1): maximum 50 ms
  • Time constant T63 (t2): maximum 85 ms
  • Time constant T90 (t3): maximum 200 ms

Warm-up time (according to IEC62828-4)

• ≤ 5 s

Mounting

Orientation

The installation orientation depends on the piping connection options. See the document for detailed diagrams.

Environment

Ambient temperature range

• See the official PDF for exact tabulated values.

Storage temperature

• See the official PDF for exact tabulated values.

Operating altitude

• See the official PDF for exact tabulated values.

Climate class

• See the official PDF for exact tabulated values.

Atmosphere

• See the official PDF for exact tabulated values.

Degree of protection

• See the official PDF for exact tabulated values.

Vibration resistance

• See the official PDF for exact tabulated values.

Electromagnetic compatibility (EMC)

• Devices fulfill the requirements of IEC / DIN EN 61326-1 (Table 2 Industrial Environment).
• Test levels for transient overvoltages (Surge) are 1000 V line to earth on DC power and input/output ports.
• Optional overvoltage protection: Spark-over voltage min. 400 V DC, nominal discharge current 10 kA.
• Overvoltage category II.

Process

Process temperature range

• See the official PDF for exact tabulated values.

Process temperature range (temperature at transmitter)

• See the official PDF for exact tabulated values.

Process pressure range

• See the official PDF for exact tabulated values.

Mechanical construction

Materials in contact with process

• See the official PDF for exact tabulated values.

Materials not in contact with process

• See the official PDF for exact tabulated values.

Display and user interface

• Features a large display with backlight for readability.
• Intuitive wizard navigation for commissioning and verification.
• Bluetooth connectivity for remote operation.

Certificates and approvals

• CE mark
• RCM-Tick marking
• Ex approvals (see separate Safety Instructions)
• Corrosion test
• EAC conformity
• Drinking water approval
• Functional safety SIL/ IEC 61508 Declaration of Conformity (optional)
• Marine approval
• Radio approval
• CRN approval
• Pressure Equipment Directive 2014/68/EU (PED)

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Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror