The industrial RTD (Resistance Temperature Detector) sensor series from Reckmann GmbH (Germany) provides high-reliability, precise temperature measurement solutions engineered specifically for harsh operating conditions. Built upon the precise resistance characteristics of pure platinum in strict compliance with international standard DIN EN 60751, these sensors deliver rapid response times, outstanding long-term thermal stability, and virtually zero signal drift throughout prolonged operational lifecycles.

To accommodate versatile installation requirements and compact pipeline geometries across diverse process industries, Reckmann GmbH offers multiple connection architectures within this product family:
- RTD Model B: Features a heavy-duty industrial Form B cast aluminum terminal connection head (IP65 rated), providing ample internal space for direct integration of built-in 4-20mA / HART temperature head transmitters.
- RTD Model D: A compact Form D connection head variant designed for installations with limited physical clearance while maintaining robust environmental protection.
- RTD Model DST (DL): Incorporates a quick-disconnect L-plug angular socket (DIN EN 175301-803 / Hirschmann type), enabling rapid field replacements and maintenance without disconnecting hard-wired lines.
- RTD Model DST (DM12): Configured with a standardized industrial M12x1 4-pin round threaded connector, delivering superior anti-vibration resistance ideal for robotic arms, CNC assemblies, and high-vibration automated lines.
- RTD Model L: A streamlined, lightweight cable sensor variant featuring heat-resistant lead wire integration, perfectly suited for measuring surface temperatures on mold plates, bearing sleeves, and tight machinery pockets.

The protective sheaths and thermowells are fabricated from high-grade stainless steel alloys (AISI 316Ti / 1.4571 or 316L / 1.4404), densely packed with high-purity magnesium oxide (MgO) mineral powder to withstand intense mechanical vibration, mechanical shock, and aggressive pressure environments. This versatile product series is widely deployed in chemical processing plants, thermal power stations, oil & gas installations, commercial boilers, food & pharmaceutical equipment, and high-precision machinery manufacturing.

• Manufacturer: Reckmann GmbH
• Country of Origin: Germany
• Product Category: Industrial Resistance Temperature Detectors (RTD)
• Available Models:
  - RTD Model B (Standard Form B aluminum terminal head IP65)
  - RTD Model D (Compact Form D terminal head)
  - RTD Model DST (DL) (L-plug quick disconnect Hirschmann socket)
  - RTD Model DST (DM12) (Industrial threaded M12x1 circular connector)
  - RTD Model L (Direct integrated heat-resistant flexible cable)
• Sensing Element: Single (1xPt100) or Dual (2xPt100 / Pt1000) platinum resistors per DIN EN 60751
• Wiring Configuration: 2-wire, 3-wire, or 4-wire circuit (eliminating lead resistance errors)
• Tolerance Class: Class B, Class A, or high-precision 1/3 DIN
• Measuring Temperature Range: -50°C to +400°C (Extended up to +600°C with mineral-insulated sheaths)
• Protective Sheath Material: Stainless steel 1.4571 (316Ti) or 1.4404 (316L)
• Standard Sheath Diameters: 3 mm, 4.5 mm, 6 mm, 8 mm
• Immersion Lengths: Fully customizable on request from 50 mm up to 2000 mm
• Process Connection: G 1/2", G 1/4", 1/2" NPT male threads or sliding compression fittings
• Ingress Protection Rating: IP65 minimum (up to IP67 for Model DST DM12)