Analog Calibration - Overview

Analog Input Calibration

Analog input modules can accommodate five input types:

•RTD

•Thermocouple

•Ohms

•Volt and milliVolt

•4-20 mA

Calibration values for each channel are stored in the module as numeric values paired with A/D conversion counts corresponding to those numeric values. The numeric values are those identified as ‘REFERENCE’ on the OI or HCD calibration displays; apply these values to the input terminals during the calibration procedure.

For AI channels configured as thermocouple inputs, the stored calibration values are compensated by the measured temperature of the terminals. Because of this observe the following rules:

•If you plan on calibrating the 2 cold junction compensation devices, perform this operation first before performing any thermocouple calibrations. However, because cold junction measurement inaccuracies will be compensated in each individual thermocouple calibration, cold junction calibration may be skipped.

•After connecting the thermocouple extension wire to the terminals, you must wait for the terminal temperature to stabilize.

•If using a compensated calibrator, input the equivalent simulated temperature values corresponding to the REFERENCE mV values. These will be the hi and low range values for the particular thermocouple configured.

Figure 56 is an adaptation of the wiring diagram given in the installation section of this manual. This figure indicates how an calibration device can be connected to the appropriate terminals of an analog input module. The calibration device(s) must have the following precision characteristics:

•TC, mVolts, Volts inputs: 1 microvolt resolution

•Ohms, RTD inputs: .01 ohm resolution

•4-20mA inputs: 4 microamp resolution

Revision 5

HC900 Hybrid Controller Installation and User Guide

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9/03

 

 

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Honeywell HC900 manual Analog Input Calibration, Rtd
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HC900 specifications

The Honeywell HC900 is a robust control solution designed to meet the demands of process industries. This flexible and powerful platform provides a comprehensive set of features tailored for process control and monitoring applications. The HC900 is particularly suited for batch control, continuous processes, and discrete applications, making it a versatile choice for a variety of industries, including oil and gas, chemicals, and electricity generation.

One of the main features of the HC900 is its modular design. This allows users to customize their control systems by selecting from a range of I/O modules, communication options, and control strategies. The system supports both analog and digital inputs and outputs, enabling seamless integration with existing infrastructures. Additionally, the modular approach enhances scalability, allowing users to expand their systems as their needs evolve.

The HC900 is equipped with advanced control technologies, including adaptive control, multivariable control, and real-time data logging. These capabilities facilitate fine-tuned control over complex processes, improving efficiency and reducing waste. The system can manage multiple process loops simultaneously, providing operators with a holistic view of their operations.

Another significant characteristic of the HC900 is its intuitive user interface. The system features a graphical display that allows operators to monitor system performance easily and make adjustments quickly. This user-friendly design minimizes training requirements and encourages efficient operation across different experience levels.

Furthermore, the HC900 incorporates sophisticated data management tools. With built-in logging and reporting functions, users can track process variables and generate comprehensive reports for analysis and regulatory compliance. This data-centric approach fosters informed decision-making and enhances overall operational effectiveness.

From a communication standpoint, the HC900 supports a variety of protocols, making it compatible with many industry-standard devices. This interoperability ensures that users can integrate the HC900 into their existing systems without hassle, streamlining migration and upgrade processes.

Additionally, the HC900 is built with reliability in mind. Its rugged design ensures durability, capable of withstanding harsh environments while maintaining consistent performance.

In summary, the Honeywell HC900 stands out as a powerful and flexible control solution, equipped with modular design, advanced control technologies, and user-friendly interfaces that cater to the diverse needs of process industries. With its comprehensive data management capabilities and robust communications options, the HC900 is an excellent choice for organizations striving for efficiency and reliability.
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