248 Rose Mount Temperature Control

General Information

• Product Type: It is a temperature transmitter that can be integrated with various temperature sensors to measure and transmit temperature signals accurately14.
• Manufacturer: Rosemount, a well-known brand in the field of industrial instrumentation, which is part of Emerson Electric Co.

Technical Specifications

• Input: It has single sensor capability with universal sensor inputs, including Resistance Temperature Detectors (RTD), Thermocouples (T/C), millivolts (mV), and ohms. This allows it to be compatible with different types of temperature sensors, providing flexibility in sensor selection based on specific application requirements4.
• Output Signal: The transmitter offers 4-20 mA/HART® protocol output signals. The 4-20 mA analog signal is widely used in industrial control systems for easy integration with other devices, while the HART protocol enables digital communication, allowing for additional information such as device status, diagnostics, and configuration data to be transmitted simultaneously14.
• Housing: It comes in DIN B head mount or rail mount configurations, providing options for different installation needs. The DIN B size is an industry standard, making it easy to install with a variety of top junction boxes. The housing is also designed to withstand harsh process environments, ensuring reliable operation in various industrial settings14.

Performance and Features

• Accuracy and Reliability: The Rosemount 248 is engineered to deliver consistent and reliable performance in process environments. It is designed to meet the requirements of common single point temperature measurement applications with high accuracy, enabling precise temperature monitoring and control.
• Diagnostics: It has basic diagnostics capabilities, including open/short sensor diagnostics. This helps to quickly detect issues in the sensor loop, allowing for timely maintenance and ensuring the reliability of the measurement system.
• Calibration Options: The transmitter offers transmitter-sensor matching based on Callendar-Van Dusen constants, along with 5-point calibration. This helps to reduce total measurement error and improve the accuracy of temperature measurement.
• Stability: With a one-year stability rating, it reduces maintenance costs by providing stable and accurate temperature measurements over an extended period, minimizing the need for frequent recalibration4.
• Environmental Resistance: The durable housing construction provides superior resistance to many process environments, such as temperature extremes, humidity, vibration, and corrosive substances, ensuring long-term reliable operation1.

Wireless Version (Rosemount 248 Wireless Temperature Transmitter)

• Wireless Communication: In addition to the wired version, there is also a wireless version available. It utilizes WirelessHART® technology to provide a cost-effective and reliable wireless solution for process monitoring. This allows for easy installation and flexible placement of temperature measurement points, especially in remote or hard-to-reach locations.
• Internal Antenna: The wireless transmitter features a compact and lightweight internal antenna, which is designed to provide reliable wireless communication while minimizing the physical footprint of the device.
• Polymer Housing: The engineered polymer housing offers excellent resistance to process environments, protecting the internal components from harsh conditions and ensuring the durability of the transmitter.
• LCD Display: It is equipped with a large LCD display that shows process variables, units, percent of range, and diagnostics information. This provides increased process visibility, allowing operators to easily monitor the temperature status and any potential issues without the need for additional equipment.
• Smart Power™ Module: The Smart Power™ module provides up to a 10-year maintenance-free operation and allows for field replacement without removing the transmitter. This feature helps to reduce maintenance efforts and downtime, improving the overall efficiency of the temperature measurement system.

Certifications and Approvals