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HIMA 984042110 Analog Input Module
HIMA 984042110
HIMA 984042110 is a high-performance analog input module designed by HIMA for its H41q and H51q safety control systems. This module plays a key role as a “process sensing expert” in the Safety Instrumented System (SIS), specifically for receiving and processing 4-20mA analog signals from on-site transmitters. The HIMA 984042110 module can accurately convert continuous process variables (such as pressure, temperature, flow rate, liquid level, etc.) into digital data, which is used by the safety controller for monitoring and logical judgment. Adopting a high-reliability design, this module features strong signal conditioning capabilities and electrical isolation characteristics, ensuring accurate and reliable measurement data even in harsh industrial environments.
Product Parameters
- Product Model: 984042110
- Manufacturer: HIMA
- Product Type: Analog Input Module (4-20mA)
- Number of Channels: 8 channels (single-ended input)
- Input Signal Type: 4-20mA (active/passive configurable)
- Input Impedance: 250Ω
- Resolution: 16 bits (including sign bit)
- Accuracy: ±0.1% of span (typical value)
- Refresh Cycle: ≤100ms (all channels)
- Common Mode Rejection Ratio: >120dB @ 50/60Hz
- Isolation Voltage: 2.5kV AC (between channel and system)
- Operating Temperature: -40°C to +70°C
- Power Consumption: Typical 1.2W (from backplane)
- Safety Certification: SIL 3 (in accordance with IEC 61508/61511)
- Installation Method: Installed via F-COMM series communication base
Key Features and Advantages
- High-Precision Measurement and Stability: HIMA 984042110 provides 16-bit high resolution and ±0.1% measurement accuracy, enabling it to accurately capture subtle changes in the process. Its excellent temperature stability and long-term stability ensure the consistency and reliability of measurement data, providing an accurate basis for safety decisions.
- Strong Anti-Interference Capability: The module adopts advanced signal processing technology and a comprehensive electromagnetic compatibility design, with a common mode rejection ratio of >120dB and 2.5kV electrical isolation. It can effectively suppress ground potential differences and electromagnetic interference, ensuring stable operation in harsh industrial environments.
- Comprehensive Diagnostic Functions: It is equipped with full online self-diagnostic capabilities, which can real-time detect faults such as open circuits, short circuits, and over-range in the sensor circuit. Any abnormal conditions will be immediately reported through the front panel indicator lights and system diagnostic interface, ensuring that the system can take timely safety measures to maintain safety integrity.
- Flexible Configuration and Maintenance: Each channel can be independently configured as an active or passive input mode, supporting multiple sensor types. The module supports hot-swapping, allowing replacement during system operation, which greatly reduces maintenance downtime. The status indicator lights on the front panel provide intuitive channel status display, facilitating quick fault location and maintenance.
Application Fields
The HIMA 984042110 module is widely used in safety-critical fields that require high-reliability process monitoring. In the petrochemical industry, it is used to monitor key parameters such as reactor pressure, tower liquid level, and pipeline flow rate; in natural gas processing plants, it is used to monitor parameters like compressor outlet pressure and separator liquid level; in thermal power plants, it is used for monitoring boiler pressure and steam temperature; in nuclear power plants, it is used for monitoring safety-related process parameters; in oil and gas transmission pipelines, it is used for data collection in the SCADA system; in chemical processes, it is used for monitoring the temperature and pressure of reaction kettles. Any occasion that requires reliably introducing process variables into the safety control system is an application field for the 984042110 module.
Installation and Maintenance
Pre-Installation Preparation
Before installing the HIMA 984042110 module, system operation permission must be obtained and the system must be confirmed to be in a safe maintenance state. Prepare a suitable base and ensure that the on-site sensor wiring is correctly connected to the base terminals. Operators must wear anti-static wristbands to prevent ESD damage to electronic components. Confirm that the module model is completely consistent with the required one, and check that all connectors are intact.
Maintenance Recommendations
Regularly check the status indicator lights on the front panel of the module: the green LED indicates normal signals, and the red LED indicates faults. Use HIMA’s dedicated diagnostic software to regularly check the module’s health status and channel diagnostic information. It is recommended to conduct regular calibration checks on the input signals to ensure measurement accuracy. When replacing the module, first unlock the red front handle and pull out the old module smoothly. When inserting a new module, align it with the guide rail and push it in until a click sound is heard, ensuring that the connector is fully connected. After replacement, the module status must be confirmed to be normal in the system, and the configuration must be re-downloaded if necessary.
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