DS3820RTDB - Resistance Temperature Detector Input Module

SPECIFICATIONS:

Part Number: DS3820RTDB
Manufacturer: General Electric
Series: Mark IV
Product Type: Resistance Temperature Detector Input Module
Dimensions: 3.6 × 2.45 × 1.1 in
Input Analog Signal Range: 5 to 1500 Ohms
Response Time: 100 milliseconds
A/D Conversion Resolution: 18 bits / 400-kilo samples per second
RTD Types: 0.00385, 0.00388, 0.00392
Common mode rejection: 100db at 50/60 Hz
Input connections: 2,3, or 4-wire
Max lead resistance: 50 ohms
nput protection: 120Vac.
Excitation current: 0.25mA
Operating Temperature: 4.4 - 60° C
Repair: 3-7 Days
Weight: 2 lbs
Country of Origin: USA
Availability: In Stock

FUNCTIONAL DESCRIPTION:

DS3820RTDB is a Resistance Temperature Detector Input Module manufactured and designed by General Electric as part of the Mark IV Series used in GE Speedtronic turbine control systems. The Resistance Temperature Detector (RTD) Input Module is a high-density device designed for accurate RTD sensor data acquisition. It features 8 independent inputs, each offering high reliability and galvanic isolation. The module includes built-in filtering, calibration, and analog-to-digital conversion, making the data ready for use by the Logic Module. Additionally, the RTD Input Module conducts continuous and thorough self-diagnostics to ensure the safety and integrity of its inputs and overall functionality.

FEATURES:

• High-density 8-channel analog RTD inputs with built-in hardware redundancy and self-diagnostics for highly reliable operation, filtering, calibration, and random hardware failure detection.
• Independent FPGA for analog input processing, self-diagnostics, and fail-safe functional behavior.
• Robust self-diagnostics ensure high reliability and early fault detection with safety-focused fault management.
• Segregation of input processing, self-diagnostics, and watchdog functions assure safety-critical functionality.
• Galvanic isolation for signal inputs with robust and dedicated communication links to Logic Module for secure data transfer.
• Inherent on-board diversity features eliminate common cause failure vulnerabilities.
• FPGA technology ensures resilience to I&C obsolescence.
• Support for 2, 3, and 4 wire configurations.
• Support for 100 Ohm, 200 Ohm, and other input sensors.

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FREQUENTLY ASKED QUESTIONS:

What is an RTD Input Module?

An RTD Input Module is a device used to measure temperature by interpreting the resistance changes in a Resistance Temperature Detector (RTD) sensor. It converts these resistance changes into temperature readings that can be used for monitoring and control purposes in various applications.

How does an RTD Input Module work?

An RTD Input Module works by sending a small current through the RTD sensor and measuring the resulting voltage drop. The resistance of the RTD changes with temperature, and the module uses this resistance to calculate the temperature.

What types of RTDs can be used with an RTD Input Module?

Most RTD Input Modules are designed to work with common RTD types such as Pt100, Pt500, and Pt1000. It's important to check the specifications of the module to ensure compatibility with your specific RTD type.