1. Core Functions and Positioning

As a process variable indicator, the module’s primary function is to receive analog signals (such as 4–20 mA DC) from sensors or transmitters and convert them into corresponding physical quantities (e.g., temperature, pressure, flow) for intuitive, real-time display. It also supports basic parameter configuration and status monitoring.

Real-time display: Accurately presents key process parameters, providing operators with a clear understanding of equipment operating conditions.

Signal adaptation: Compatible with multiple standard analog inputs and capable of connecting to a wide range of field devices, including thermocouples, thermistors, and pressure transmitters.

Auxiliary functions: Certain models support upper/lower limit alarms, retransmission output (converting the input into standard signals for control systems), and on-panel parameter calibration or configuration.

2. Key Parameters and Specifications

Input signal: Supports standard analog inputs such as 4–20 mA DC and 0–10 V DC, as well as temperature inputs from thermocouples (e.g., K, J types) and RTDs (e.g., Pt100), meeting a variety of process monitoring needs.

Display: Utilizes a high-brightness LED or LCD digital display, with optional backlight to ensure readability in both bright and dim environments. Typical display accuracy is ±0.1% FS or better.

Power supply: Designed for industrial-grade power inputs, commonly 24 V DC or 100–240 V AC, featuring overvoltage protection and tolerance to site voltage fluctuations.

Installation and protection: Compact, panel-mounted (embedded) design with a front-panel protection rating up to IP65, resistant to dust and water spray, suitable for installation on control cabinets and local operation panels.

3. Applicable Scenarios and Advantages

The module is widely used in chemical, petrochemical, power generation, water treatment, and manufacturing industries, particularly in applications requiring local, real-time monitoring of process variables.

Key advantages include:

Independent indication: Can be installed directly near the equipment, allowing operators to quickly observe real-time process data.

System integration: When used with PLC or DCS systems, it functions as a local backup indicator, enhancing overall monitoring reliability.

Ease of use: Supports on-site calibration and parameter setting, offering simple operation, convenient maintenance, and strong adaptability to harsh industrial environments.