Honeywell 24MAR09 Rev-0 RTD Pulse Generator PCB Module

Introduction

Process instrumentation accuracy is fundamental to industrial automation, and signal conditioning modules form the critical interface between field sensors and control systems. The Honeywell 24MAR09 Rev-0 RTD Pulse Generator PCB Module is a specialized calibration and signal generation board designed for testing and verifying RTD (Resistance Temperature Detector) measurement circuits and 4-20mA analog signal loops in process control environments.

This compact yet versatile PCB module, manufactured by Honeywell Automation India Ltd (also referenced as Hokoba), provides technicians and engineers with a reliable tool for generating precise RTD simulation signals and 4-20mA loop currents during commissioning, troubleshooting, and periodic calibration of process control instrumentation. Available now through Aeliya Marine Tech, this fully tested used module offers exceptional value for maintenance departments and instrumentation workshops.

In this article, we explore the technical specifications, functional capabilities, application scenarios, and proper usage of the 24MAR09 pulse generator module. Whether you are maintaining a process plant, calibrating temperature transmitters, or building test benches for instrumentation validation, this guide provides the comprehensive information you need to effectively utilize this Honeywell signal conditioning component.

Product Overview

The Honeywell 24MAR09 is a dedicated RTD pulse generator and 4-20mA signal source implemented as a printed circuit board module. It is designed to simulate RTD sensor outputs and generate precise current signals for testing and calibration purposes in industrial process control systems. The module enables maintenance personnel to verify the accuracy of temperature measurement loops without requiring expensive handheld calibrators or separate signal generators.

Manufactured under reference number 011-24856 by Honeywell Automation India Ltd, the 24MAR09 board reflects Honeywell's decades of expertise in process control instrumentation. The Rev-0 revision indicates the original production version of this module, which has been field-proven in numerous industrial installations across power generation, chemical processing, oil and gas, and manufacturing sectors.

The module's compact PCB form factor allows it to be installed in instrument racks, test benches, or portable calibration kits. At just 1.26 Kg, it is easily transportable for field calibration activities, while its robust construction ensures reliable operation in typical industrial environments.

Technical Specifications

Parameter	Value
Product Model	24MAR09 Rev-0
Manufacturer	Honeywell Automation India Ltd / Hokoba
Function	RTD Pulse Generator / 4-20mA Generator
Output Signal	4-20mA DC current loop
Reference Number	011-24856
Revision	Rev-0
Weight	1.26 Kg
Condition	Used, Fully Tested

Key Features & Benefits

• Dual Signal Generation: The 24MAR09 combines RTD pulse generation and 4-20mA current loop output in a single module, eliminating the need for separate instruments when testing temperature measurement and analog signal transmission circuits.
• Precise 4-20mA Output: The module generates accurate 4-20mA DC signals corresponding to calibrated process variable ranges, enabling verification of transmitter scaling, PLC analog input calibration, and recorder/indicator accuracy.
• RTD Simulation Capability: By generating resistance values corresponding to standard RTD temperature-resistance tables (for Pt100, Pt1000, or other RTD types), the module simulates actual sensor outputs for testing signal conditioning circuits and temperature controllers.
• Compact PCB Design: The printed circuit board form factor integrates easily into test racks, calibration stations, or portable field kits, providing signal generation capability wherever needed without bulky benchtop equipment.
• Honeywell Quality: Manufactured by Honeywell Automation India Ltd, the module benefits from Honeywell's extensive experience in process instrumentation and adherence to rigorous quality standards.
• Lightweight and Portable: At only 1.26 Kg, the module can be easily transported for field calibration activities, reducing technician workload and enabling on-site troubleshooting.
• Proven Field Reliability: The Rev-0 design has been deployed in numerous industrial environments, demonstrating reliable operation under typical process control system conditions.

Industrial Applications

Temperature Transmitter Calibration

The primary application for the 24MAR09 is in calibrating RTD temperature transmitters. By connecting the module to the transmitter input and generating known resistance values, technicians can verify that the transmitter outputs the correct 4-20mA signal across the full temperature range. This process ensures measurement accuracy and compliance with process quality standards.

PLC Analog Input Verification

Programmable Logic Controllers (PLCs) rely on analog input modules to convert 4-20mA signals into digital process values. The 24MAR09 generates precise current signals at 4mA, 12mA, and 20mA points (and intermediate values), enabling verification of PLC analog input scaling, A/D converter accuracy, and signal conditioning circuit integrity.

DCS Commissioning and Testing

During commissioning of Distributed Control Systems (DCS), the 24MAR09 provides simulated process variable signals to verify proper configuration of control loops, alarm setpoints, operator displays, and historian trending before the actual process is started. This loop check procedure is a critical step in ensuring safe and reliable process startup.

Instrumentation Workshop Testing

Maintenance workshops that repair and refurbish process instrumentation use the 24MAR09 as a reference signal source for testing repaired transmitters, indicators, and controllers. The module's accuracy and stability ensure that repaired instruments are verified against a trusted standard before being returned to service.

Educational and Training Applications

Technical training institutions utilize the 24MAR09 to demonstrate signal conditioning principles, calibration procedures, and measurement loop troubleshooting to students and apprentices in instrumentation and process control programs.

Product Configuration & Setup

The Honeywell 24MAR09 is designed for straightforward integration into test and calibration setups. The PCB features clearly marked terminal blocks or connector pins for power input, RTD output simulation, and 4-20mA current loop connections. Proper setup involves the following steps:

Power Supply Connection: Connect the module to its specified power supply (typically 24V DC for industrial instrumentation). Verify correct polarity and ensure the power supply is adequately rated for the module's requirements.

4-20mA Loop Connection: Connect the module's current output terminals in series with the device under test (transmitter input, PLC analog input, or indicator). Ensure proper polarity and that the total loop resistance is within the module's drive capability.

RTD Simulation Setup: For RTD simulation, connect the module's resistance output to the RTD input terminals of the device being tested. Select the appropriate RTD type (Pt100, Pt1000, etc.) on the module to match the characteristics of the sensor being simulated.

Signal Verification: Before testing the device under test, verify the module output using a calibrated multimeter or reference meter. This ensures that the signal source itself is operating correctly and that test results will be valid.

Related Products from Aeliya Marine Tech

Aeliya Marine Tech offers a wide range of process control, instrumentation, and automation components to complement your calibration and testing requirements:

• Rosemount 03151 Terminal Head — IP67 transmitter housing for RTD and thermocouple temperature sensors.
• GE IS200VTURH2BAC Turbine Controller — Mark VI turbine protection board for power plant instrumentation.
• Siemens 6SY7010 Thyristor Module — SCR power module for drive and heating control applications.
• GE DS200TCPDG2BEC Power Distribution — Control system power distribution unit for instrument panels.
• Schneider ATS48 Soft Starter — Motor soft starter for pump and fan control in process applications.

Frequently Asked Questions (FAQ)

External Technical Resources

For additional technical information about Honeywell process instrumentation and RTD technology, visit these authoritative resources:

• Honeywell Process Solutions — Official Honeywell portal for process control products, technical documentation, and application support.
• Honeywell — Wikipedia — Comprehensive overview of Honeywell International, including its process automation and control systems divisions.

Why Choose Aeliya Marine Tech

Aeliya Marine Tech has earned the trust of maintenance professionals, system integrators, and OEMs worldwide through consistent delivery of quality industrial automation components and outstanding customer service:

• Quality-Assured Products: Every item in our inventory is functionally tested before shipment. We identify and rectify any defects, ensuring you receive a product ready for immediate deployment.
• Significant Cost Savings: Our used industrial components typically cost a fraction of new equivalents, helping you stretch your maintenance budget while maintaining system reliability.
• 30-Day Warranty: All products come with a 30-day replacement warranty, demonstrating our confidence in the quality of every item we sell.
• Specialized Expertise: Our team understands industrial automation, process control, and instrumentation. We can help you find the right component for your application and answer technical questions.
• Global Reach: We ship worldwide with appropriate packaging for electronic components, ensuring your products arrive in the same condition they left our facility.

The Honeywell 24MAR09 Rev-0 RTD Pulse Generator PCB Module is an essential tool for any instrumentation maintenance program. Contact Aeliya Marine Tech today to add this reliable calibration module to your test equipment inventory.