Rosemount 848T

Reference Manual

00809-0100-4697, Rev EA October 2011

Table 3-17. DUAL_SENSOR

 

 

CONFIG Sub-Parameter

DUAL SENSOR CONFIG

 

Structure

STRUCTURE

 

 

Parameter

Description

 

DUAL_SENSOR_MODE

Disables or enables a sensor for configuration

 

DUAL_SENSOR_TAG

Differential description

 

INPUT_A

Sensor to be used in DUAL_SENSOR_CALC

 

INPUT_B

Sensor to be used in DUAL_SENSOR_CALC

 

 

Equation used for the dual sensor measurement including:

 

DUAL_SENSOR_CALC

Not Used, Difference (Input A - Input B), and Absolute

 

 

Difference (Input A - Input B)

 

ENG_UNITS

Units used to display sensor parameter

 

UPPER_RANGE

Upper Differential Limit (Input A High - Input B Low)

 

LOWER_RANGE

Lower Differential Limit (Input A Low - Input B High)

 

 

 

Table 3-18. DUAL_SENSOR_

STATUS Sub-Parameter

Structure

Table 3-19. Validation Value Sub-Parameter Structure

 

Dual Sensor Status Table

 

0x00

Active

 

 

0x01

Out of Service

 

 

0x02

Inactive

 

 

0x04

Component Sensor Open

 

0x08

Component Sensor Short

 

0x10

Component Sensor Out of Range or Degraded

 

0x20

Component Sensor Out of Limits

 

0x40

Component Sensor Inactive

 

0x80

Configuration Error

 

 

 

 

 

Validation Value Sub-Parameter

 

 

Structure

 

 

 

Parameter

 

Description

 

VALIDATION_STATUS

State of the channel specific measurement validation

 

measurement

 

 

 

 

DEVIATION_VALUE

Deviation output value

 

DEVIATION_STATUS

Status of the deviation output

 

RATE_OF_CHANGE_VALUE

Rate of change value output

 

RATE_OF_CHANGE_STATUS

Status of Rate of change output

 

 

 

 

 

3-22

Page 44
Image 44
Emerson 848T manual Structure, Dual Sensor Status Table

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.