Rosemount™ 848T Temperature Transmitter

The Rosemount 848T Temperature Transmitter delivers a best-in-class solution for high density temperature measurement applications. It is the ideal transmitter for obtaining up to eight temperature measurements in close proximity to each other, which reduces wiring costs and simplifies installation. Engineered with Emerson's measurement validation diagnostic, this transmitter helps you predict on-scale failures and avoid unnecessary shutdowns, increasing safety and productivity.

• Transmitter accepts up to eight temperature measurements per device for reduced process control costs
• Measurements can be taken in close proximity to each other for simplified installation and reduced wiring
• Receives independently configurable RTD, thermocouple, ohm and milliamp inputs for high density applications
• Integrates existing analog instrumentation into FOUNDATION™ Fieldbus environment for added digital functionality
• Bus-powered transmitter further reduces the amount of required wiring to install the device
• Measurement validation diagnostic detects data abnormalities and on-scale failures to avoid shutdowns
• Device dashboards display an easy interface for simplified device configuration and diagnostic troubleshooting

1. Integral Design, Saves Cost and Space

· Head-Mounted: Installs directly on the field temperature sensor's connection head, eliminating the need for separate transmitter mounting hardware or enclosures, saving space and material costs.

· Reduces Cable Costs: Uses standard copper twisted-pair wire to transmit the stable 4-20 mA signal, avoiding costly thermocouple extension wires or long, low-resistance RTD lead runs.

2. Exceptional Measurement Accuracy and Stability

· Advanced signal processing ensures high-accuracy temperature measurement, with built-in cold junction compensation for thermocouples.

· Excellent RFI/EMI immunity guarantees stable and reliable signals in electrically noisy industrial environments.

3. Powerful Diagnostics and Configuration Flexibility

· HART protocol support enables remote configuration, calibration, and diagnostics using a handheld communicator or asset management system, without needing to access hazardous or hard-to-reach locations.

· Built-in sensor diagnostics detect failures such as sensor burnout or short circuit and provide timely alarms.

4. Rugged Construction for Harsh Environments

· Robust housing with IP66/67 (NEMA 4X) rating protects against moisture, dust, and corrosive atmospheres.

· Wide ambient temperature range suitable for outdoor applications from extreme cold to high heat.

5. Easy Maintenance and Upgrade

· Modular design allows the electronics module to be rotated and replaced separately without rewiring, simplifying maintenance.

· Compatible with various thermocouple and RTD types, selectable via configuration for high versatility.

· Applications requiring long-distance signal transmission, replacing raw sensor signal transmission.

· Harsh field environments with significant electrical interference.

· Temperature measurement in Hazardous Areas.

· Oil & Gas: Pipeline temperature, tank temperature, process temperature.

· Chemical Industry: Reactor, heat exchanger, distillation column monitoring.

· Power Industry: Steam lines, boilers, motor temperature monitoring.

· HVAC Systems: Temperature control in critical process areas.

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