Thermometrics multi-point RTD assemblies combine the accuracy and stability of IEC 60751 Pt100 elements with the temperature profiling capability of a multi-junction assembly — providing a calibrated temperature profile at multiple depths from a single process nozzle. Preferred over thermocouple multi-points where measurement accuracy is critical.
| Parameter | Specification |
|---|---|
| Number of Elements | 2 to 12 Pt100 elements standard; up to 16 custom |
| Element Spacing | Customer-specified; equal or variable pitch |
| Element Type | Pt100, IEC 60751 · Pt1000 on request |
| Accuracy Class | Class A standard; Class AA available |
| Wire Configuration | 3-wire per element standard; 4-wire available |
| Construction | Individual MIMS sheaths in a multi-conductor bundle, or multi-bore tube |
| Outer Sheath OD | 3/8" to 1" depending on element count |
| Sheath Material | 316SS · Inconel 600 · Hastelloy C276 |
| Total Insertion Length | 6" to 120" standard; custom |
| Process Connection | NPT · Flanged · Compression · Van Stone |
| Temperature Range | −200°C to 600°C (standard); to −269°C cryogenic on request |
| Calibration | Per-element NIST-traceable R vs T table |
For LNG tank stratification monitoring and cryogenic vessel temperature profiling, Thermometrics supplies multi-point RTD assemblies with individual Pt100 elements calibrated down to −200°C. NIST-traceable calibration at multiple cryogenic temperatures. 316SS sheath, PTFE-insulated leads rated for continuous cryogenic service.
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