The Rosemount Model 848T 8-Input Temperature Transmitter
The Rosemount Model 848T 8-Input Temperature Transmitter
With FOUNDATION fieldbus this will forever change temperature monitoring applications.
Traditional monitoring architectures including sensors wired direct and multiplexers will be forever changed with the introduction of this new revolutionary temperature transmitter.
* Communicates Eight Temperature Measurements per Transmitter
* Communicates up to 128 measurements per FOUNDATION fieldbus segment
* Mounts Anywhere – Field Hardened, Intrinsically Safe, Low Power
* Diagnostics and Calculation Capabilities
* Ideal for temperature monitoring on distillation columns, tanks, reactors, boilers, furnaces, turbines, and compressors
Product Data Sheet, Rev CA (PDF @530Kb, 00813-0100-4697)
Manual Supplement: Important Model 848T Installation Considerations, Rev CA (PDF @130Kb, 00809-0200-4697)
Product Manual, Rev BA (PDF @2800Kb, 00809-0100-4697)
The first choice for high density temperature measurement applications now with industry first Measurement Validation Diagnostic.
The Rosemount 848T FOUNDATION™ fieldbus temperature transmitter simplifies and reduces the cost of a plant’s process control architecture. It replaces traditional temperature monitoring methods (wired direct, low cost single input transmitters, and multiplexers) with an intrinsically safe, eight input transmitter that mounts close to the process. The industry first Measurement Validation Diagnostic available on the Rosemount 848T Fieldbus transmitter provides insight into your process and can identify measurement abnormalities before they become a major issue, saving your time and money associated with process shutdowns and helping you run your process more efficiently. The 848T also comes with a new Device Dashboard, which gives users a clear view of everything needed to evaluate, diagnose, and configure the 848T. The new interface leverages Human Centered Design principles to create a streamlined, easy and efficient user experience, eliminating the complexities, and allowing the user to realize the benefits of FOUNDATION™ fieldbus.
FEATURES
| • | Accepts eight independently configurable RTD, thermocouple, ohm, and millivolt inputs |
| • | Industry first Measurement Validation Diagnostic can detect data abnormalities before a shutdown condition occurs and can identify on-scale failures |
| • | Powers PlantWeb® by providing multi-sensor measurement capabilities and diagnostics in one transmitter |
| • | Reduces the need for signal wiring and can cut capital expenditures by up to 70% when compared to traditional temperature architectures. |
| • | Installs next to process for shorter wire runs reducing the effects of electromagnetic interference from nearby electrical equipment |
| • | Easily integrates existing analog instrumentation into FOUNDATION fieldbus environment with the added digital features including: |
| – | 2 Multiple Analog Input (MAI) function blocks to efficiently communicate all eight measurements at once | |
| – | 4 Input Selector (ISEL) function blocks for selecting Average, Minimum, Maximum, Midpoint, or First Good Status Temperatures | |
| – | Backup Link Active Scheduler (LAS) ensures measurement availability | |
| – | 8 Analog Input (AI) function blocks to communicate individual measurements with alarming |
| – | Communicates up to 128 temperature measurements on two wires using innovating High Density technology |
Features & BenefitsFeatures & Benefits
Specifications Applications
| Key Specifications | |
| Digital Accuracy | ±0.30°C (±0.54°F) for Pt100 RTD ±0.70°C (±1.26 °F) for Type J Thermocouple |
| Ambient Temperature Effects | 0.003 °C per 1 °C change in ambient temperature for PT100 |
| Stability | 0.1% reading or 0.1°C whichever is greater for 2 years for RTD ±0.1% of reading or 0.1°C, whichever is greater for one year for thermocouples |
| Input | 8 channels (combination of 2-3 wire RTD’s, thermocouples, millivolts and ohms) 4-20 mA inputs using optional connectors |
| Output | FOUNDATION™ fieldbus Manchester-encoded digital signal that conforms to IEC 1158-2 and ISA 50.02 |
| Supply Voltage/Current Consumption | 9.0 to 32.0 V dc; 22ma maximum |
Specifications Applications
For More 848T Order No.
| Rosemount 848T Temperature Transmitter | A1 | Rosemount 848T Temperature Transmitter | B1 |
| Rosemount 848T Temperature Transmitter | A2 | Rosemount 848T Temperature Transmitter | B2 |
| Rosemount 848T Temperature Transmitter | A3 | Rosemount 848T Temperature Transmitter | B3 |
| Rosemount 848T Temperature Transmitter | A4 | Rosemount 848T Temperature Transmitter | B4 |
| Rosemount 848T Temperature Transmitter | A5 | Rosemount 848T Temperature Transmitter | B5 |
| Rosemount 848T Temperature Transmitter | A6 | Rosemount 848T Temperature Transmitter | B6 |
| Rosemount 848T Temperature Transmitter | A7 | Rosemount 848T Temperature Transmitter | B7 |
| Rosemount 848T Temperature Transmitter | A8 | Rosemount 848T Temperature Transmitter | B8 |
| Rosemount 848T Temperature Transmitter | A9 | Rosemount 848T Temperature Transmitter | B9 |
| Rosemount 848T Temperature Transmitter | A10 | Rosemount 848T Temperature Transmitter | B10 |
| Rosemount 848T Temperature Transmitter | A11 | Rosemount 848T Temperature Transmitter | B11 |
| Rosemount 848T Temperature Transmitter | A12 | Rosemount 848T Temperature Transmitter | B12 |
| Rosemount 848T Temperature Transmitter | A13 | Rosemount 848T Temperature Transmitter | B13 |
| Rosemount 848T Temperature Transmitter | A14 | Rosemount 848T Temperature Transmitter | B14 |
| Rosemount 848T Temperature Transmitter | A15 | Rosemount 848T Temperature Transmitter | B15 |
| Rosemount 848T Temperature Transmitter | A16 | Rosemount 848T Temperature Transmitter | B16 |
| Rosemount 848T Temperature Transmitter | A17 | Rosemount 848T Temperature Transmitter | B17 |
| Rosemount 848T Temperature Transmitter | A18 | Rosemount 848T Temperature Transmitter | B18 |
| Rosemount 848T Temperature Transmitter | A19 | Rosemount 848T Temperature Transmitter | B19 |
| Rosemount 848T Temperature Transmitter | A20 | Rosemount 848T Temperature Transmitter | B20 |
| Rosemount 848T Temperature Transmitter | A21 | Rosemount 848T Temperature Transmitter | B21 |
| Rosemount 848T Temperature Transmitter | A22 | Rosemount 848T Temperature Transmitter | B22 |
| Rosemount 848T Temperature Transmitter | A23 | Rosemount 848T Temperature Transmitter | B23 |
| Rosemount 848T Temperature Transmitter | A24 | Rosemount 848T Temperature Transmitter | B24 |
