Rosemount 848T

Reference Manual

00809-0100-4697, Rev EA October 2011

CONFIGURATION

Standard

Each FOUNDATION fieldbus configuration tool or host system has a different

 

way of displaying and performing configurations. Some will use Device

 

Descriptions (DDs) and DD Methods to make configuration and displaying of

 

data consistent across host platforms.

 

Unless otherwise specified, the 848T will be shipped with the following

 

configuration (default):

Table 3-1. Standard Configuration Settings

Transmitter

Configuration

Custom Configuration Methods

Sensor Type(1)

Type J Thermocouple

Damping(1)

5 seconds

Measurement Units(1)

°C

 

Output(1)

Linear with Temperature

Line Voltage Filter(1)

60 Hz

Temperature Specific Blocks

Transducer Block (1)

 

 

 

FOUNDATION fieldbus Function Blocks

Analog Input (8)

 

Multiple Analog Input (2)

 

Input Selector (4)

 

 

 

(1) For all eight sensors

Refer to that systems documentation to perform configuration changes using a FOUNDATION fieldbus host or configuration tool.

NOTE

To make configuration changes, ensure that the block is Out of Service (OOS) by setting the MODE_BLK.TARGET to OOS, or set the SENSOR_MODE to Configuration.

The transmitter is available with the standard configuration setting. The configuration settings and block configuration may be changed in the field with the Emerson Process Management Systems DeltaV®, with AMSinside, or other FOUNDATION fieldbus host or configuration tool.

Custom configurations are to be specified when ordering.

For FOUNDATION fieldbus hosts or configuration tools that support device description (DD) methods, there are two configuration methods available in the Transducer block. These methods are included with the DD software.

Sensor Configuration

Sensor Input Trim (user input trim)

See the host system documentation for information on running DD methods from the host system. If the FOUNDATION fieldbus host or configuration tool does not support DD methods, refer to “Block Configuration” on page 3-7for information on how to modify sensor configuration parameters.

3-2

Page 24
Image 24
Emerson 848T manual Standard, Transmitter Configuration Custom Configuration Methods

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.