Fluke 5618B-12-D Secondary PRT Probe
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Fluke 5618B-12-D is a secondary PRT temperature probe with 100Ω nominal resistance at 0°C, temperature range -200°C to 500°C, and drift rate ±0.1°C for precision calibration.
Product details
| Model | 5618B-12-D |
| Manufacturer | Fluke |
| Category | Temperature Probes & Sensors |
| Availability | Made to order |
Description
Overview
The Fluke 5618B-12-D is a secondary standard platinum resistance thermometer (PRT) probe designed for precision temperature measurement and calibration applications. It features a 305 mm (12 inch) length with 3.2 mm (1/8 inch) diameter stainless steel sheath and 100Ω nominal resistance at 0°C.
This probe is suitable for laboratory environments, calibration of primary temperature instruments, and reference applications requiring high accuracy and long-term stability.
Key Features
- 100Ω nominal resistance at 0°C
- Temperature range: -200°C to 500°C
- 316 stainless steel sheath for durability
- Temperature coefficient: 0.003923Ω/Ω/°C nominal
- Hysteresis less than 0.01°C at 0°C
- Time constant: 9 seconds max for 63.2% response
- Thermal EMF less than 25 mV at 420°C
- 5-pin DIN termination with Teflon leads
Applications
- Precision temperature calibration and reference standards
- Laboratory temperature measurement
- Industrial calibration services
- Research and development temperature monitoring
Specifications
| Resistance at 0°C | 100Ω nominal |
| Temperature Range | -200°C to 500°C |
| Temperature Coefficient | 0.003923Ω/Ω/°C nominal |
| Drift Rate | ±0.1°C when used periodically to 500°C |
| Sheath Material | 316 Stainless Steel |
| Probe Length | 305 mm (12 inches) |
| Probe Diameter | 3.2 mm (1/8 inch) |
| Lead Material | 22 AWG Teflon, 6 feet |
| Termination | 5-pin DIN |
| Hysteresis | Less than 0.01°C at 0°C |
| Time Constant | 9 seconds max for 63.2% |
| Thermal EMF | Less than 25 mV at 420°C |
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Fluke 5618B-12-D Secondary PRT Probe
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