Rosemount 248 Head Mount Temperature Transmitter Industrial Temperature Sensor

Rosemount 248 Head Mount Temperature Transmitter Industrial Temperature Sensor

The Rosemount™ 248 Temperature Transmitter by Emerson is a highly reliable, single-point temperature transmitter widely used in industrial process environments.

Key Features

• Flexible sensor input: Supports RTDs (2/3/4‑wire), thermocouples (T/C), millivolt (mV) signals, and resistance (Ω) inputs
• 4–20 mA + HART® digital output: Enables analog control-loop use with digital diagnostics/configuration capability
• DIN B head‑mount (or rail‑mount): Compact and installs directly into standard transmitter heads or on a rail
• Basic diagnostics: Detects open/short sensor conditions; includes sensor‑transmitter matching (Callendar–Van Dusen) for higher accuracy
• Rugged construction: Epoxy-sealed electronics and durable housing, with ambient operating range from –50 °C to +85 °C; resistant to moisture/corrosion.
• One‑year stability: Helps minimize re‑calibration frequency
• SIL certification: Achieves SIL 2 (and up to SIL 3 with options) per IEC 61508—suited for safety-instrumented systems

Configuration & Installation

• Bench or field configuration: Via HART field communicator, PC-programming kit, or factory presets
• Sensor/loop diagnostics: Offers 5‑point calibration and clear feedback on primary process variable, output current, and terminal temperature
• Flexible mounting: Can be assembled to RTDs/TCs with thermowells or purchased separately; head-mount or DIN-rail mounting options available.
• Wireless variant available: The “Wireless 248” adds a Wireless HART® module, integrated LCD display, and field‑replaceable battery with up to 10‑year life.

Typical Specs Summary

Who It's For

The 248 is ideal for engineers and maintenance teams needing a cost-effective, accurate, and durable temperature transmitter for industrial control systems. Its built-in diagnostics and HART communication simplify setup and troubleshooting. The SIL‑certified versions make it suitable for critical safety applications. For remote sites, the Wireless variant provides the same functionality without cabling.