Overview
The Omega PRTXA-2-L-12 RTD probe is a resistance temperature detector designed for industrial and process measurement applications. This probe features a chemical-resistant cast iron protection head and screw-on cap with a PT100 platinum RTD element and 316 stainless steel sheath. The unit includes 1/2″ NPT mounting threads for direct installation into thermowells or process vessels. The robust construction and proven RTD technology make it suitable for demanding environments where temperature monitoring is critical.
Key Features
- Cast Iron Protection Head: Chemical-resistant construction provides durability and protection in corrosive environments
- Stainless Steel Sheath: 316 stainless steel material resists corrosion and extends probe lifespan
- PT100 RTD Element: Industry-standard platinum element for reliable, accurate temperature sensing across a broad range
- Screw Terminal Block: Easy connection of insulated copper extension wire
- 1/2″ NPT Threading: Allows direct installation into thermowells when properly sized
- Fast Thermal Response: Enables quick detection of temperature changes for responsive process control
Technical Specifications
Detailed specifications are as follows:
- RTD Element Type: PT100 (Platinum, 100Ω reference resistance)
- Sheath Material: 316 Stainless Steel
- Protection Head: Cast Iron with screw-on cap
- Mounting Thread: 1/2″ NPT
- Wiring Configuration: 2, 3, or 4-wire (verify specific model for your application)
- Operating Temperature Range: -58°F to 482°F (-50°C to 250°C) typical for PT100
- Accuracy Class: IEC 751 Class A or B (confirm with ordering specification)
- Lead Wire Connection: Screw terminal block with insulation support
Typical Applications
- Industrial process control and monitoring
- HVAC systems and thermal management
- Chemical processing and fluid measurement
- Steam and hot water systems
- Plywood mills and manufacturing facilities
- Pressure vessel and thermowell installations
- Laboratory and test environments
Compatibility & Replacements
Compatible With
- Standard RTD measurement devices and controllers accepting PT100 input
- Industrial process control systems (PLC, DCS, PAC compatible)
- Data acquisition and monitoring equipment with RTD support
- 4-20 mA transmitter systems
- Standard 1/2″ NPT thermowell installations
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The PRTXA-2-L-12 may be cross-compatible with other Omega PR-series RTD probes of equivalent length and NPT thread sizing, though exact part-for-part replacement should be confirmed with documentation.
Works With
- Omega temperature monitoring instruments and displays
- Standard industrial RTD signal conditioning modules
- PLC and DCS systems with analog RTD input cards
- Temperature data loggers and recorders
- SCADA systems and automation platforms



