Differential pressure Deltabar PMD75

Differential pressure Deltabar PMD75 – Differential pressure transmitter with metal sensor for measurement of pressure differences

Specifications:

Measuring Principle	Differential pressure
Characteristic	Digital transmitter with metallic measuring diaphragms; Modular transmitter; Long-term stability; High static pressure/Overload resistance; Secondary process barrier
Supply Voltage	4...20 mA HART: 10,5...45V DC (Non Ex); Ex ia: 10,5...30V DC; PROFIBUS PA: 9...32 V DC (Non Ex); FOUNDATION Fieldbus: 9...32 V DC (Non Ex)
Reference Accuracy	Standard: 0.05%; Platinum: up to 0.035%
Long Term Stability	0.03 % of URL/ year; 0.05 % of URL/ 5 years; 0.08 % of URL/ 10 years
Process Temperature	-40°C...85°C (-40°F...185°F)
Ambient Temperature	-50°C...85°C (-58°F...185°F)
Measuring Cell	10 mbar...250 bar (0.15 psi...3750 psi)
Smallest Calibratable Span	1 mbar (0.015 psi)
Vacuum Resistance	50 mbar (0.73 psi)
Max. Turn Down	100:1
Max. Overpressure Limit	On one side: 420 bar (6300psi)
Process Connection	1/4-18NPT; RC1/4"
Material Process Membrane	316L, AlloyC, Tantal, Gold-Rhodium
Material Gasket	Viton, PTFE, EPDM, NBR
Fill Fluid	Silicone oil; Inert oil
Material Housing	316L, Die-cast aluminum
Communication	4...20 mA HART; PROFIBUS PA; FOUNDATION Fieldbus
Certificates / Approvals	ATEX, FM, CSA, CSA C/US, IEC Ex, INMETRO, NEPSI, EAC, UK Ex
Safety Approvals	SIL
Design Approvals	NACE MR0103; EN10204-3.1
Marine Approvals	GL/ ABS
Specialities	Diagnostic functions
Successor	PMD75B

Field of application

The Deltabar PMD75 differential pressure transmitter with piezoresistive sensor and welded metallic membrane is used in all industries for continuous measurement in liquids, vapors and gases. The 3-key operation enables simple and reliable commissioning and operation. The integrated HistoROM data module allows easy management of process and device parameters. Designed according to IEC 61508 for use in SIL2/3 safety applications.

For level, volume or mass measurement in liquids, differential pressure monitoring as well as flow measurement (volume or mass flow) in conjunction with primary elements in gases, vapors and liquids.

Process connections: Threads
Process temperature: -40 to +85°C (-40 to +185°F)
Measuring ranges: 0.25mbar to 40bar (0.0036 to 600psi)
Accuracy: ±0.05%, “Platinum” ±0.035% (optional)
International explosion protection certificates, overfill prevention WHG, SIL, hygienic approvals, marine approvals

Benefits

Best accuracy, reproducibility and long-term stability
Highest safety due to gas tight feedthrough with capabilities up to SIL2/3, certified to IEC 61508
Easy menu-guided commissioning via local display, 4 to 20mA with HART, PROFIBUS PA, FOUNDATION Fieldbus
HistoROM data management concept for fast and easy commissioning, maintenance and diagnostics
Cost savings with modular concept for easy replacement of sensor, display or electronics
Overload-resistant up to 420bar / 42MPa / 6300psi, function-monitored
Seamless and independent system integration (HART/PA/FF)