Fluke Calibration 5618B-12-P Secondary PRT Probe

Overview

The Fluke Calibration 5618B-12-P is a secondary-standard Platinum Resistance Thermometer (PRT) probe designed for precision temperature measurement and calibration in critical applications. With a 3.2 mm diameter sheath and 12-inch immersion depth, it combines accurate measurements with reduced response time, making it ideal for applications where space is limited. Each probe includes NVLAP-accredited calibration with ITS-90 coefficients and is traceable to NIST standards.

The small diameter design minimizes heat conduction between the ambient environment and the sensor, reducing measurement errors in shallow immersion depth applications where larger probes would conduct excess heat.

Key Features

• Secondary-level performance with full ITS-90 calibration and NIST traceability
• Small diameter sheath (3.2 mm / 0.125 in) for reduced response time and minimal immersion errors
• INFO-CON termination for direct compatibility with Fluke Calibration 1523 and 1524 thermometers
• Excellent long-term stability and low drift rate
• NVLAP-accredited calibration with ITS-90 coefficients and R vs. T values
• 316 stainless steel sheath for durability and corrosion resistance
• Temperature range from -200°C to 500°C

Applications

• Temperature measurement and calibration in laboratory and industrial settings
• Calibration of infrared blackbody heat sources and IR calibrators
• Use with Fluke Calibration 1523, 1524, 1502A, 1529, or 1560 thermometer readouts
• Precision temperature monitoring where immersion depth is limited
• Industrial standard temperature measurements and traceability applications

Included Accessories

• NVLAP-accredited calibration report with ITS-90 calibration coefficients and R vs. T values