Overview
The Omega PR-12 PT100 is a heavy-duty resistance temperature detector (RTD) probe engineered for demanding industrial environments. This platinum RTD sensor features a chemical-resistant cast iron protection head, durable 316 stainless steel sheath, and 1/2″ NPT mounting threads. Built for accuracy and longevity, the PR-12 is widely used in process control, HVAC systems, manufacturing equipment, and laboratory applications where reliable temperature measurement is critical.
Key Features
- Platinum PT100 RTD element per IEC 751 standard
- Chemical-resistant cast iron protection head with screw-on cap
- 316 stainless steel probe sheath for corrosion resistance
- Available in 3-wire or 4-wire configuration for flexibility
- 1/2″ NPT threading for direct installation in thermowell or manifold
- Screw terminal block for easy insulated copper wire connection
- Spring-loading option available for improved thermowell response
Technical Specifications
The PR-12 series meets industrial requirements for precision temperature sensing across a broad operating range:
- Probe Diameter: 1/8″ (3.2 mm)
- RTD Element: Platinum (PT100 Ω)
- Resistance Class: Class A or B per IEC 751
- Temperature Range: -200°C to 600°C
- Connection Type: 3-wire or 4-wire configuration
- Mounting Thread: 1/2″ NPT
- Sheath Material: 316 stainless steel
- Protection Head: Cast iron, chemical-resistant
- Termination: Screw terminal block
- Inside Head Dimensions: 2.2″ diameter Ă— 2.0″ height
Typical Applications
- HVAC systems and building automation
- Industrial process control and monitoring
- Pharmaceutical and food processing equipment
- Chemical reactors and batch processes
- Heat exchanger and boiler monitoring
- Laboratory test chambers and ovens
- Equipment manufacturing and testing
Compatibility & Replacements
Compatible With
- Process control systems using 4-20 mA RTD transmitters
- Temperature indicators and data acquisition systems accepting RTD input
- Industrial thermometers and temperature scanners
- Standard RTD-based control loops in manufacturing automation
- Direct insertion into thermowell housings (when properly sized)
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The PR-12 is the standard replacement for earlier-generation Omega PR-12 units. Other compatible RTD probes in the Omega lineup include the PR-11 and PR-18 series for alternative configurations.
Works With
- RTD transducers outputting 4-20 mA or digital signals
- PLC analog input modules configured for RTD Class A or B
- Temperature monitoring and data logging software platforms
- Industrial control networks integrating temperature sensors
- Thermowell adapters and manifold assemblies
