PXM509-IS

Supported Applications

The Omega PXM509-IS series comprises metric, high-accuracy intrinsically safe pressure transmitters designed for hazardous locations. These solid-state sensors are specified for process control in hydraulic and pneumatic systems, natural gas compressors, chemical refineries, oil and gas facilities, pipeline measurements, hydrogen service (with 316L SS wetted parts standard), and power generation applications.

Operating Conditions & Performance

The series utilizes an oil-filled silicon sensor with a welded stainless steel housing. Measurement capabilities span gage pressure, sealed gage, absolute pressure, compound gage, vacuum (negative gage), and barometric pressure ranges from 0 to 1 inH₂O up to 3500 psi (245 bar). Accuracy is rated at ±0.08% BSL maximum for combined linearity, hysteresis, and repeatability; other accuracies include ±0.5% full scale typical or ±1% full scale typical depending on configuration.

Performance specifications are defined by the following parameters:

• Operating Temperature: -40 to 75°C (-40 to 167°F)
• Compensated Temperature Range: 10 inH₂O to 5 psi: -17 to 75°C; 15 to 3500 psi: -29 to 75°C
• Response Time: <1 msec (typical)
• Bandwidth: DC to 1kHz (typical)
• Shock Rating: 50 g, 11 msec half sine shock
• Vibration Rating: ±20 g
• Long Term Stability: ±0.1% full scale typical (1-Year)
• Pressure Cycles: 1 million typical

The series supports overpressure and containment limits that vary by range; for example, the 15 to 750 psi ranges contain up to 3000 psi, while the 2500 psi range contains up to 8000 psi. The maximum pressure rating is listed as Up to 11,000 psi.

Configuration Options

The PXM509-IS series offers extensive configuration options for electrical terminations, process connections, and output signals to accommodate diverse installation requirements in hazardous environments.

Electrical Terminations & Enclosure Ratings

• PX509: Cable with flying leads (2 m / 6'), IP65
• PX509C: Cable with ½ NPT conduit connector, no trim pots, not demountable, IP65
• PX509CP: Cable with ½ NPT conduit connector and side accessible trim pots, IP65
• PX509CW: Submersible cable (3 m / 10') with ½ NPT conduit connector, no trim pots, not demountable, IP65
• PX509CWP: Submersible cable (3 m / 10') with ½ NPT conduit connector and side accessible trim pots, not demountable, IP65
• PX519: mini-DIN connector (mating connector not included), IP65
• PX529: Twist-lock 6 pin connector, IP65
• PX539: DIN connector (mating connector not included), IP65
• PX549: Glass to metal sealed solder pins, IP65
• PX559: M12 connector (M12 cables sold separately), IP65

Sensor & Output Options

• Output Signals: 4 to 20 mA, 0 to 5 VDC, or 0 to 10 VDC (Note: PX509 also available in industrial models with 5 or 10 Vdc outputs)
• Power Supply / Excitation Voltage: 10 to 28 Vdc
• Load Resistance: 1000Ω @ 50 Vdc (for conduit models with zero and span set, accuracy is ±0.5% full scale typical or ±1% maximum; for ranges 2.5 psi and below)
• Wetted Material: 316L stainless steel
• Housing Material: Welded Stainless Steel
• Process Connections: Standard pressure port is ¼-18 NPT male; Metric pressure port is G1/4B male (most popular); other ports available upon request.

Key Product Differences

The series distinguishes between standard and metric models, as well as various hazardous location approvals. The PXM509-IS designation specifically refers to the Metric model line with Intrinsically Safe ratings. Model numbers follow patterns such as PX5[**]-<RANGE>GC2IS (or AC2IS, VC2IS, BC2IS) followed by an electrical termination code.

Approvals include FM Intrinsically Safe for Class I, II, III, Division 1 Groups A, B, C, D, E, F, G and Class I, Zone 0 (AEx ia IIC in US; Ex ia IIC in Canada) with T4 temperature code. Non-Incendive ratings cover Class I Division 2 Groups A, B, C, D for both US and Canada. The series complies with EN 61326-1:2006 and EN 61326-2-3:2006 Industrial levels standards and is RoHS Compliant.

Specific range configurations include Compound Gage (e.g., ±10 inH₂O to ±15 psig), Vacuum/Negative Gage, Barometric/Absolute Pressure ranges (e.g., 0 to 32 inHg or 16 to 32 inHg), and standard gage pressure up to 3500 psi. Mating connectors are not included for PX539-IS, PX519-IS, and PX559-IS series models.