PX51-IS

Supported Applications

The Omega PX51-IS series consists of general purpose, intrinsically safe pressure transmitters designed for hazardous location installations. These heavy-duty industrial pressure transducers feature a rugged thick film sensing element and all stainless steel construction with a sealed case intended for harsh environments.

Documented media compatibility includes gas, light oil, and dense liquid applications. The series supports gage (G), absolute (A), and sealed gage (SG) pressure measurements across Imperial and Metric configurations.

Operating Conditions & Performance

The PX51-IS transmitters operate within an ambient temperature range of -40 to 104°C (-40 to 220°F). Measurement ranges span from 0 to 10 psi up to 0 to 30,000 psi for Imperial models and 0 to 0.7 bar up to 0 to 400 bar for Metric models.

Performance specifications include an accuracy of ±0.25% FS (Combined Linearity, Hysteresis and Repeatability). The burst pressure rating is specified as 3x Range. Wetted materials are constructed from 17-4 Stainless Steel. All models come complete with a 5-point NIST traceable calibration.

For intrinsically safe installations in hazardous locations, the series adheres to specific electrical parameters: Supply Voltage (Voc or Vt) ≤ 28 VDC; Short Circuit Current (Isc or It) ≤ 110 mA; Maximum Power (Pmax) ≤ 0.77 W; Capacitance (Co) ≥ 48.0 nF + Ccable; and Inductance (Lo) ≥ 0.00 uH + Lcable.

Approvals & Certifications

• NIST Standard
• CE
• CLASS I, DIVISION 1 GR A, B, C, D, E, F, G
• CLASS I, ZONE 0 AEx ia IIC (US)
• CLASS I, ZONE 0 Ex ia IIC (CANADA)
• CLASS I, DIVISION 2 GR A, B, C, D
• EN 61326-1:2006, EN 61326-2-3:2006 Industrial levels

Configuration Options

The series offers extensive configuration options for pressure ports, electrical connections, and output signals to accommodate diverse installation requirements.

Pressure Port Options (Imperial)

• C: ¼-18 NPT-M
• D: ¼-18 NPT-F
• T: Dual ½-14 NPT external / ¼-18 NPT internal
• K: ¼-20 UNF-F
• J: ¼-20 UNF-M
• S: ¼ HP Tube Fitting (≥10,000 psi ranges)

Pressure Port Options (Metric)

• MA: G¼B Male
• MB: G¼B Female
• MC: G¼B Male
• MD: G¼B Female

Electrical Connection Options

• 0: 3 m (10') pigtail with ½ NPT conduit
• 1: PTIH-10-6P twist-lock 6-pin connector
• 5: M12 connector
• 6: mini-DIN connector
• GW: Submersible waterproof cable with ½ NPT conduit

Output Signals & Power Requirements

The series supports three output signal types:

• I: 4 to 20 mA output (Excitation Voltage: 10 to 32 Vdc max)
• 5V: 0 to 5 Vdc output (Excitation Voltage: 16 to 32 Vdc max; OUTPUT (-) tied to SUPPLY (-))
• 10V: 0 to 10 Vdc output (Excitation Voltage: 16 to 32 Vdc max)

The housing material is all stainless steel with an overall length of 75.57 mm [2.98 in] and a diameter of 28.58 mm [1.125 in]. EMC compliance supports up to 30 m (98.4') of cable.

Key Product Differences

The PX51-IS series is available as Imperial models (PX51) and Metric models (PXM51). Model numbers follow the structure: PX51/PXM51 - <PRESSURE PORT> - <ELECTRICAL CONNECTION> - <RANGE> - <UNITS> - <OUTPUT> - <OPTIONS>.

Standard configurations include potentiometers. To order models without potentiometers, add the 'NP' suffix to the model number (e.g., PX51C0-1.5KGC2ISNP). Sealed gage pressure models are ordered by replacing 'G' in the units position with 'SG', and absolute pressure models are ordered by replacing 'G' with 'A'; no extra charge applies for these variations.

For PTIH-10-6P twist-lock connector configurations, the mating connector part number is PT06F10-6S (sold separately).