COMET SN239E – Cryogenic Pt1000 Temperature Probe -190 to +150 °C, ELKA Connector

COMET SN239E – Cryogenic Pt1000 Temperature Probe -190 to +150 °C, Class A, ELKA Connector, Silicone Cable

The COMET SN239E is a professional cryogenic Pt1000 temperature probe with an ELKA connector – specially developed for safe and precise operation at extremely low temperatures down to –190 °C. Whether for liquid nitrogen (LN₂), cryostats, deep-freeze storage, cryogenic technology, research laboratories, biobanks, medical devices, or industrial low-temperature processes – this probe reliably and stably measures temperatures from –190 to +150 °C with the highest Class A accuracy (±(0.15 + 0.002 × t) °C).

The measuring tip, made of corrosion-resistant stainless steel (DIN 1.4301 or 1.4571), is tapered and robust enough for direct insertion into media or surfaces. The shielded silicone cable is cryo-flexible, heat- and cold-resistant, and chemically durable. The ELKA connector ensures a secure, fast, and vibration-resistant connection to COMET instruments, transmitters, data loggers, or controllers. The IP67 housing provides reliable protection against dust and water jets – even during intensive use in humid or condensation-prone cryogenic environments.

The probe is maintenance-free, long-term stable, and available with a traceable calibration certificate (according to EN ISO/IEC 17025) – ensuring top quality for critical applications. Whether used as an insertion probe in LN₂ containers, for surface measurement on cryogenic tanks, or continuous monitoring in deep-freeze systems – the SN239E impresses with precision, robustness, and ease of use. The probe is optimized for continuous use in cryogenic media and remains stable even during thermal shocks.

Why the COMET SN239E is the best cryogenic Pt1000 probe:

• Cryogenic measuring range –190 to +150 °C – ideal for LN₂ & cryogenic technology
• Class A accuracy – ±(0.15 + 0.002 × t) °C
• ELKA connector – secure, quick & vibration-resistant connection
• Shielded silicone cable – cryo-flexible & chemically resistant
• IP67 protection – dustproof & water jet resistant
• Stainless steel measuring tip – corrosion-resistant & robust
• Fast response time – ideal for dynamic processes
• Universal use – insertion, surface, liquids & gases

Technical data SN210E / 2091 series (cryogenic version):

• Measuring range: –190 to +150 °C
• Accuracy: ±(0.15 + 0.002 × t) °C
• Accuracy class: A
• Measuring element: Pt1000 (3850 ppm/°C)
• Connection: 2-wire
• Measuring tip: Stainless steel, tapered for insertion
• Cable: Shielded silicone, 1 meter (standard)
• Connector: ELKA
• Protection rating: IP67
• Warranty: 30 months

Perfectly suited for:

• Liquid nitrogen (LN₂) & cryogenic tanks
• Cryogenic technology & research laboratories
• Biobanks & sample storage
• Deep-freeze storage & cryogenic medicine
• Nitrogen & helium cooling systems
• Compost & biogas plants (low temperature zones)
• COMET transmitters & loggers in cryogenic environments
• Environmental & climate research

Installation & operation – safe & simple

Insert the probe into the medium or fix it onto the surface, plug the ELKA connector into the COMET device – done. The silicone cable is cryo-flexible and durable, while IP67 protection allows use in humid or condensation-prone environments. For optimal measurement, insert the probe deeply enough to fully immerse the measuring tip.

Available versions:

• Cable length 1 meter
• Cable length 2 meters
• Cable length 5 meters
• Cable length 10 meters

Summary:

• Multi-purpose thermometer (waterproof, IP67 protection) -190 to +150 °C
• Accuracy class B
• Stainless steel housing 17240 with Teflon cable in the specified length and ELKA connector
• Diameter 5 ± 0.1 mm, length 50 mm
• The design enables a faster response to temperature changes compared to sensors with protective tubes.

Scope of delivery:

• Sensor – with selected cable length (see above)
• User manual