Rosemount 848T

Reference Manual

00809-0100-4697, Rev EA October 2011

Interfacing Analog Transmitters to FOUNDATION fieldbus

Transducer Block Configuration

Use the sensor configuration method to set the sensor type to mV – 2-wire for the applicable transducer block or follow these steps.

1.Set the MODE_BLK.TARGET to OOS mode, or set the SENSOR_MODE to configuration.

2.Set the SENSOR to mV.

3.Set the MODE_BLK.TARGET to AUTO, or set the SENSOR_MODE to operation.

Multiple Analog Input or Analog Input Block Configuration

Follow these steps to configure the applicable block.

1.Set the MODE_BLK.TARGET to OOS mode, or set the SENSOR_MODE to configuration.

2.Set CHANNEL to the transducer block configured for the analog input.

3.Set XD_SCALE.EU_0 to 20 Set XD_SCALE.EU_100 to 100 Set XD_SCALE.ENGUNITS to mV

4.SET OUT_SCALE to match the desired scale and units for the connected analog transmitter.

Flow Example: 0 – 200 gpm OUT_SCALE.EU_0 = 0 OUT_SCALE.EU_100 = 200 OUT_SCALE.ENGUNITS = gpm

5.Set L_TYPE to INDIRECT.

6.Set the MODE_BLK.TARGET to AUTO, or set the SENSOR_MODE to operation.

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Emerson 848T manual Multiple Analog Input or Analog Input Block Configuration

848T specifications

The Emerson 848T is a state-of-the-art temperature transmitter designed for accurate and reliable temperature measurement in various industrial applications. This device has gained recognition for its advanced features and robust performance, making it a popular choice among engineers and technicians in the field.

One of the key highlights of the Emerson 848T is its unique dual-channel capability, which allows it to seamlessly monitor two temperature sources simultaneously. This functionality is particularly beneficial in processes where multiple temperature points need to be assessed, optimizing efficiency and reducing the need for additional equipment. It supports various sensor types, including thermocouples, RTDs, and resistance temperature detectors, making it versatile for different applications.

The 848T is equipped with sophisticated digital processing technology, which enhances its accuracy and stability. It features a 24-bit analog-to-digital converter, ensuring precise measurement and minimizing drift over time. Moreover, the device boasts a wide operating temperature range, accommodating ambient conditions from -40°C to 85°C. This durability makes it suitable for harsh environments commonly encountered in industries such as oil and gas, pharmaceuticals, and power generation.

Another significant characteristic of the Emerson 848T is its configurable output options. Users can choose from a range of output signals, including 4-20 mA, which provides a standard interface for integration into existing control systems. Additionally, it offers a HART communication protocol, allowing for easy configuration, calibration, and diagnostics through a digital interface. This feature enhances the transmitter's usability, enabling operators to perform adjustments without direct access to the device.

The device is designed with user-friendliness in mind. Its intuitive setup procedure and robust graphical user interface simplify the commissioning process, ensuring that even those new to the technology can easily navigate the system. An integrated LCD display provides real-time readings and status information, facilitating monitoring at a glance.

In summary, the Emerson 848T temperature transmitter combines reliable performance, user-friendly design, and advanced digital technologies. Its dual-channel capability, wide sensor compatibility, and adjustable output options make it an essential tool for achieving precise temperature measurements in various industrial settings. With these compelling features, the Emerson 848T stands out as a leading choice for professionals seeking accuracy and efficiency in their temperature monitoring applications.