The HW group Temp‑485‑Pt100 Frost2 is an industrial‑grade, high‑precision Pt100 temperature sensor designed specifically for measuring extremely low and high temperatures. With an exceptional measurement range from –190 °C to +150 °C, it provides the ideal solution for cryogenic applications, pharmaceutical cold chains, the food industry, and industrial processes requiring the highest accuracy. Its rugged stainless‑steel probe (IP67) and protected converter (IP65) ensure long‑term, reliable data acquisition even under the most demanding conditions.

Equipped with a Pt100/Pt1000 probe compliant with EN 60751/IEC 60751 standards, the Frost2 delivers precise readings across its full temperature range. The ASCII protocol via RS‑485 interface enables secure, loss‑free communication — even over long distances. Full compatibility with HW group Poseidon2 devices ensures easy integration into existing monitoring networks, including real‑time monitoring and alarm functions.

The external probe with a 2 m PTFE cable allows flexible placement directly at the measurement point, while the compact converter (114 × 65 × 35 mm) can be installed in a protected location. With minimal power consumption of only 2 mA during measurement and a maximum of 60 mA during data transmission, the Frost2 is highly energy‑efficient, making it ideal for continuous operation.

The Frost2 is especially suited for regulated industries such as pharmaceuticals, food processing, and research, which require audit‑ready precision. Its IP65/IP67 protection ratings and durable construction ensure reliable performance even in dusty, humid, or chemically exposed environments.

Technical Specifications

• Measurement range: –190 °C to +150 °C
• Accuracy: ±(0.25 + 0.002|t|) / ±(0.4 + 0.005|t|)
• Probe: Pt100/PT1000 per EN 60751 / IEC 60751 in stainless‑steel housing
• Protection rating: IP65 (converter), IP67 (probe)
• RS‑485 interface, ASCII protocol (9600Bd 8N1)
• Compatible with HW group Poseidon2 4002
• Power supply: 12–24 V via Poseidon2 or external 10–35 V DC
• Cable: 2 m PTFE for flexible mounting
• Power consumption: 2 mA (measurement), max. 60 mA (transmission)
• Dimensions: 114 × 65 × 35 mm
• Weight: 165 g

Advantages of the HW group Temp‑485‑Pt100 Frost2

• Ultra‑Cold sensor with extended temperature range down to –190 °C
• High precision through Pt100/Pt1000 sensor technology
• Robust stainless‑steel probe (IP67) and IP65‑rated converter
• Flexible installation with 2 m probe cable
• Seamless integration into Poseidon2 monitoring systems
• Secure, loss‑free RS‑485 data transmission
• Energy‑efficient continuous operation
• Audit‑ready measurements for regulated industries

Typical Applications

• Pharmaceutical industry – monitoring vaccines, medicines, and cold‑chain logistics
• Cryogenic applications in laboratories and research facilities
• Food industry – deep‑freeze and cold storage monitoring
• Industrial refrigeration and furnace temperature processes
• Civil engineering – temperature monitoring under extreme climate conditions
• Server room monitoring and technical infrastructure

Integration with HW group Systems

The Temp‑485‑Pt100 Frost2 connects directly to HW group Poseidon2 devices via RS‑485 and integrates easily into monitoring and control systems. Data can be centrally collected and analyzed through cloud solutions such as SensDesk.cloud. When thresholds are exceeded, automatic alerts can be triggered via email, SMS, or SNMP, enabling proactive management of extreme environmental conditions.

Reliability and Service Life

The stainless‑steel probe is corrosion‑resistant and mechanically robust, ensuring long‑term operation even under extreme conditions. The Frost2 provides consistent, precise measurements over many years without calibration drift, making it a future‑ready investment for any low‑temperature monitoring requirement.

The HW group Temp‑485‑Pt100 Frost2 delivers precise and reliable measurements across a wide temperature range from –190 °C to +150 °C. Its rugged construction, secure RS‑485 communication, and full Poseidon2 compatibility make it the top choice for demanding applications in industrial, pharmaceutical, food, and research environments. Combining durability and precision, it represents a robust, high‑performance solution for ultra‑cold monitoring needs.