Thermometrics thermocouple rake assemblies mount multiple thermocouples across a duct, flue, or flow cross-section to measure the spatial temperature distribution of a gas stream. Used in combustion performance testing, stack emissions monitoring, and gas turbine inlet and exhaust characterization.
| Parameter | Specification |
|---|---|
| Number of Probes | 2 to 16 per rake (multiple rakes can be combined for full traverse) |
| Probe Spacing | Equal pitch or Chebyshev / log-linear per ASME PTC requirement |
| TC Type | K, N, R, S — per temperature range of application |
| Probe Construction | MIMS, 1/16" to 3/16" OD; exposed or ungrounded junction |
| Rake Body | 316SS or Inconel tube; welded or flanged process connection |
| Duct Penetration | Flanged, threaded, or welded nozzle; compression fitting for removable rakes |
| Duct Width Coverage | 6" to 144" (custom fabricated to duct drawing) |
| Operating Temperature | To 1260°C (Type K/N, Inconel sheath) |
| Termination | Individual MIMS tails · Multi-pin circular connector · Junction box |
For gas turbine performance testing and boiler acceptance testing per ASME PTC 4 and PTC 22, traverse point placement must follow prescribed grid patterns. Thermometrics engineers rake geometry to match the required traverse grid — equal-area, log-linear, or Chebyshev — so each probe samples a representative area of the gas cross-section.
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