PR-22

Supported Applications

The Omega PR-22 Series consists of RTD (Resistance Temperature Detector) probes featuring molded M12 connectors. These sensors are designed for temperature measurement applications requiring Pt100 elements with IEC Class A or Class B accuracy specifications.

Operating Conditions & Performance

The PR-22 series supports distinct process and ambient operating ranges based on the selected accuracy class:

• Class A Standard Probe Temperature Range: -30 to 350°C (-22 to 622°F)
• Class B Probe Temperature Range: -50 to 500°C (-58 to 932°F)

The connector temperature range is specified as -50 to 90°C (-58 to 194°F). Accuracy values are defined as ±0.15°C @ 0°C for Class A and ±0.30°C @ 0°C for Class B.

Configuration Options

The series offers configurable dimensions, sensor elements, and electrical connections to accommodate various installation requirements.

Sensor Elements & Accuracy Classes

• Pt100 Sensors: Available in IEC Class A or IEC Class B accuracy configurations.
• Model Numbering: The letter "A" denotes Class A, while changing this to "B" indicates a Class B element (e.g., PR-22-3-100-B).

Probe Dimensions & Materials

• Sheath Material: 316 Stainless Steel.
• Diameters (Imperial): 1/8, 1/4, 3/8, and 1/2 inch options are available for the Standard series.
• Diameters (Metric): 2 mm (M2), 3 mm (M3), and 6 mm (M6) probe diameters. Note: M2 is only available in 150 mm and 250 mm lengths.
• Probe Lengths: Standard series offers 6", 9", 12", 18", and 24" insertion lengths. Metric series options include 100, 150, 250, 350, 500, 750, and 1000 mm.

Electrical Connection & Accessories

• Connector Type: Molded 4-pin M12 connector with an IP67 enclosure rating.
• Extension Cables: Optional extension cables, such as the M12C-SIL-4-R-F-1.5 model, are available separately to extend reach from the probe tip.

Key Product Differences

Variants within the PR-22 series differ primarily by accuracy class (Class A vs. Class B), sensor element resistance (Pt100 or Pt1000 as indicated in model numbers like PR-22-3-1000-A), and dimensional specifications.

• Accuracy Selection: Models with "A" in the designation provide IEC Class A accuracy, while models designated with "B" offer IEC Class B accuracy. Pricing for Class B variants is available via omega.com/pr-22.
• Diameter Constraints: The 2 mm (M2) diameter option is restricted to specific lengths of 150 mm and 250 mm, whereas other diameters support the full range of standard insertion lengths.