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PR-21SL-M12
Spring Loaded RTD Probes with M12 Connectors
Models In Stock
- M12 Connectors for Easy Assembly, No Tools Required. An M12 Extension Cable is Required for Installation.
- Spring Loaded RTD Probes for Use in Thermowells, Insures Proper Tip Contact with Thermowell and Maximum Performance
- 4-Wire Class A PT100 RTDs, Can Be Used in Any 2, 3 or 4-Wire Application for Maximum Flexibility
- Fits All Standard 0.260' Bore Thermowells (Note: Thermowell Not Included)
PR-21SL-M12
From
Models In Stock
Product Overview
- Accuracy Class A
- Accuracy Detail Class A per IEC60751
- Color Code Standard ANSI
- Connector Temperature, Max 85 °C
- Connector Temperature, Min 0 °C
- Electrical Connection M12 4 pin Male
- Number of Wires 4
- Probe Diameter 0.26 in
- Process Connection Size N/A
- Process Temperature, Max 260 °C
- Process Temperature, Min -50 °C
- Series ID PR-21SL-M12
- Sheath Material 316 Stainless Steel
- Temperature Sensor Type RTD
- Thermocouple Type N/A
Supported Applications
The Omega PR-21SL Series consists of spring-loaded RTD (Resistance Temperature Detector) sensors designed for use in thermowells. These probes feature M12 A-Coded Male Connectors and are engineered to fit all standard 0.260" bore thermowells, which are sold separately.
Operating Conditions & Performance
The series operates within a temperature range of -50 to 260°C (-58 to 500°F), with a maximum connector temperature limit of 85°C (185°F). The sensors utilize Pt100 elements and meet Class A accuracy per IEC 60751, defined as ±(0.15 + 0.002*t)°C where "t" = temperature in °C regardless of sign. At 0°C, the resistance is specified at 100.00 Ω with a tolerance of ±0.06Ω for Class A models.
Wetted materials consist of 0.89 (0.035) diameter music wire conforming to ASTM A228. The series is RoHS compliant.
Configuration Options
The PR-21SL Series offers configurable stem lengths and wiring arrangements to accommodate specific thermowell dimensions and instrumentation requirements.
- Stem Lengths: Standard catalog models are available in 2½", 4", 6", 9", 12", 15", 18", and 24" lengths. Custom probe lengths up to 24" can be ordered by modifying the stem length code (e.g., "1250" for 12½").
- Wiring Configurations: Sensors are available in 2-Wire, 3-Wire, and 4-Wire arrangements. The model number suffix indicates wiring: change the final digit from “-1” to “-2” for alternate wiring.
- Electrical Connection: Integral M12 A-Coded Male Connectors are standard on all units.
The adjustable self-gripping spring mechanism allows these probes to be used in shorter length thermowells. Probe length equals the thermowell stem length for proper fitment.
Available Options and Accessories
- SPRTX-SS In-Line Transmitter
- TX94A-SS Transmitter
- UWRD-2-S Wireless Transmitter
- M12C Extension Cables
- M12 Extension Cables
- 4 to 20 mA Transmitters
Key Product Differences
Variants within the series are distinguished by stem length and wiring configuration. The model number structure follows the pattern PR-21SL-3-R-A-L-M12-X, where R denotes resistance (e.g., 100 for Pt100, 1000 for Pt1000), L represents the stem length in millimeters or inches as coded (e.g., "0400" for 4", "0600" for 6"), and X indicates the wiring arrangement (-1 or -2).
The series includes both Pt100 models (resistance at 0°C: 100.00 Ω) and Pt1000 models (e.g., PR-21SL-3-1000-A variants), though the primary specification table details Class A performance for the 100 Ω elements.
PDFs & Manuals
