ZT 930 HONEYWELL

ZT 930 HONEYWELL Analog Input Module

Brand：HONEYWELL Model number：ZT 930

Country of origin: United States Product weight：0.4kg

HS code：8517623990

Product Details：

Product Dimensions：

The module provides the interface between the continuous analog signals generated by field devices (such as sensors, transmitters, and thermocouples) and the discrete digital processing core of the control system. Its primary function is to accurately measure, condition, and digitize these physical variables, ensuring reliable monitoring and control of industrial processes. It typically resides within a rack or chassis of the control system.

Key Product Parameters (Typical Specifications)

While specific parameters vary between Honeywell's different series (e.g., Experion PKS, Series 8, or various DCS platforms), the following are typical specifications for a standard multi-channel analog input module:

Input Channels: Usually 8 or 16 channels per module.
Input Types: Accepts standard industrial signals such as 4-20 mA, 0-20 mA, 1-5 V DC, or 0-10 V DC. Specialized versions may support Thermocouple (T/C) or Resistance Temperature Detector (RTD) inputs.
Resolution: High resolution, often 16-bit (providing 65,536 distinct values across the range) for high-accuracy measurement.
Accuracy: Typically $\pm 0.1\%$ of full scale range (FSR) or better.
Update Rate/Scan Time: Fast conversion speeds, often in the range of 5 to 10 milliseconds per channel.
Isolation: Channel-to-channel or channel-to-earth galvanic isolation to prevent ground loops and protect against electrical noise, often rated for 500 V DC.
Operating Temperature: Designed for harsh industrial environments, commonly $0^\circ\text{C}$ to $60^\circ\text{C}$ ( $32^\circ\text{F}$ to $140^\circ\text{F}$ ).

Product Advantages

High Accuracy and Resolution: Ensures precise measurement of process variables, which is vital for tight process control and quality assurance.
Robust Noise Immunity: Built-in isolation and advanced filtering techniques minimize the impact of electrical interference, leading to reliable data acquisition.
Hot Swappable: Many modules support online replacement (hot swappable), allowing maintenance without shutting down the entire control system, maximizing process uptime.
Extensive Diagnostics: Features comprehensive self-diagnostics, including detection of open circuits (e.g., broken wires), short circuits, and module faults, simplifying troubleshooting.
System Integration: Seamless integration with Honeywell's Distributed Control Systems (DCS) like Experion PKS, leveraging standardized communication protocols and configuration tools.
Configurability: Channels are often individually configurable for different input types (voltage/current) and ranges via software.

Important Considerations (Precautions)

Wiring Standards: Always adhere strictly to Honeywell's wiring diagrams. Incorrect wiring, especially for shielded cables, can introduce noise and affect measurement accuracy. Use appropriate shielded twisted-pair cables for low-level signals like T/C or RTD.
Grounding: Proper system grounding is essential for effective noise suppression and electrical safety. Consult the system manual for grounding requirements.
Power Supply: Ensure the module is connected to a clean, regulated power supply that meets the specified voltage and current ratings.
Load Requirements: Verify that the field device's output and the module's input impedance are compatible. For current inputs (e.g., 4-20 mA), the transmitter must be able to drive the module's input resistance.
Calibration: Periodically verify and, if necessary, re-calibrate the input channels against a known standard to maintain long-term accuracy.

Typical Product Applications

Honeywell Analog Input Modules are deployed across virtually every segment of the process industry for monitoring and data acquisition:

Oil and Gas: Monitoring pressure, temperature, and level in pipelines, separators, and storage tanks.
Chemical and Petrochemical: Measuring reactor temperatures, flow rates of reactants, and pH levels for process optimization and safety.
Power Generation: Acquiring steam temperature, boiler pressure, and generator winding temperature for turbine and boiler control.
Pharmaceutical: Monitoring critical environmental conditions (temperature, humidity) in clean rooms and validating bioreactor parameters.
Water and Wastewater: Measuring reservoir levels, flow rates in pumping stations, and water quality parameters.

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