Note on Nomenclature: In the context of industrial instrumentation, "Tudor" is frequently associated with Danfoss temperature controllers and sensors. The model number "2100" is most closely aligned with the Danfoss 2100 series of temperature controllers (specifically the TP/TK electronic thermostat series). This paper assumes the subject is the Danfoss 2100 TP Electronic Temperature Controller, providing a technical overview suitable for use as a manual supplement or operational guide.
By 1970, Tudor needed to evolve. The Valjoux 7734 manual movement in the 703x series was reliable but dated. Rolex (Tudor’s parent company) was preparing to introduce an automatic chronograph for Tudor using the Valjoux 7750 (which became the ref. 9400).
However, supply chain delays and testing phases forced Tudor to produce a hybrid or transitional reference. Enter the Ref. 2100. tudor 2100 tp manual
Because the case was designed for an automatic rotor, the space inside was cavernous. To fill this gap, Tudor used a thicker movement ring. Collectors refer to this configuration as the “TP” (Transitional Period) manual.
Date: October 26, 2023 Subject: Configuration, Wiring, and Calibration of the 2100 TP Electronic Temperature Controller Keywords: Temperature Control, PID, Thermostat, Industrial Automation, Danfoss 2100 Note on Nomenclature: In the context of industrial
The market is full of “Franken” watches (automatic 9400s with manual movements swapped in, or 2100s with incorrect dials). Use this checklist:
| Feature | Genuine 2100 TP | Fake/Franken | | :--- | :--- | :--- | | Case ref. | 2100 between lugs at 12 o’clock | 9400, 791x, or missing | | Movement | Valjoux 234 (manual) | Valjoux 7750 (auto) or generic Chinese | | Spacer ring | Thick, metal, fills the case | Thin plastic or missing | | Crown position | Sits slightly recessed | Flush (auto stem length) | | Pushers | Screw-down, period-correct | Pump pushers (wrong era) | The Case: A massive (for the era) 40mm
Introduction: The Prophecy in the Box
For decades, watch enthusiasts spoke of the "Tudor Revolution" with bated breath. We saw the hints in the Black Bay, the ripples in the Pelagos, but nothing prepared us for the release of the Tudor 2100 TP. It isn't just a watch; it is a statement of permanence for the 22nd century.
If you are holding the Tudor 2100 TP Manual, you have likely already noticed the weight of the object in your hand. This isn't a flimsy instruction pamphlet printed on glossy paper. It is a field guide to the future. Here is a breakdown of what makes this manual—and the mechanism it describes—so compelling.