The Rosemount 248 temperature transmitter is a standard device that can be used with various types of sensor inputs and can be installed economically and efficiently, with measurement accuracy higher than direct-wired solutions. This transmitter can be configured for top mounting in DIN B style and offers various housing options. To achieve reliable performance in process environments, this device uses a 4 to 20 mA signal that is resistant to noise and compensates for ambient temperature.

Here’s a detailed rundown of the key features of the Rosemount 248 Temperature Transmitter:

Flexible Sensor Input: Accepts a wide range of temperature sensors, including RTDs (like Pt100), thermocouples (J, K, T, etc.), mV, and resistance inputs.

Analog 4–20 mA Output: Provides a reliable, industry-standard signal with HART® protocol for advanced configuration and diagnostics.

Compact Form Factor: Available in head mount and DIN rail mount versions, making it adaptable to various installation environments.

Built-In Diagnostics: Features open and short sensor detection to enhance reliability and ease of troubleshooting.

Field Configuration: Supports configuration via handheld HART communicator or PC-based tools using the AMS Device Manager.

High Stability: Offers a one-year stability rating, minimizing drift and reducing recalibration efforts.

Wide Operating Range: Designed for harsh environments, with options for hazardous area certifications (e.g., explosion-proof, intrinsically safe).

Marine & Offshore Compliance: Certified for marine applications, increasing its usability in demanding industries.

Customization Options: Often offered as an integral assembly with temperature sensors and thermowells for streamlined deployment.
 

Specifications

FAQ for the Rosemount 248 Temperature Transmitter, based on official documentation and common user queries:

Frequently Asked Questions – Rosemount 248

1. What types of sensors can the 248 accept? 

It supports a wide range of inputs including RTDs (e.g., Pt100), thermocouples (J, K, T, etc.), millivolt, and resistance inputs.

2. How is the transmitter configured? 

You can configure it using a HART® communicator or software like AMS Device Manager. It supports both local and remote configuration.

3. What is the output signal? 

It provides a 4–20 mA analog signal with HART® communication for diagnostics and configuration.

4. Can it be used in hazardous environments? 

Yes, it offers certifications for explosion-proof, intrinsically safe, and non-incendive installations, depending on the model.

5. What mounting options are available? 

It comes in head mount (DIN Form B) and DIN rail mount versions to suit different installation needs.

6. What is the accuracy and stability? 

Accuracy is ±0.15% of span, and it maintains ±0.1% stability over one year.

7. Is it suitable for marine or offshore use? 

Yes, it is certified for marine applications, making it ideal for offshore platforms and shipboard systems.

8. Where can I find the official manual? 

You can download it directly from Emerson’s official documentation.