Application Solution of Shidian Technology Dual-Channel Pressure Transmitter (WE-T180 Series) in Gas Pressure Regulating Cabinet Field

I. Application Background

Gas pressure regulating stations are crucial components within gas transmission and distribution systems. Their compact structure, small footprint, cost-effectiveness, and ease of installation and use have led to widespread adoption. The basic configuration inside a station includes inlet/outlet valves, filters, pressure regulators, and corresponding measurement instruments. Additional safety equipment such as bellows compensators, overpressure relief valves, and overpressure shut-off valves can also be installed. Furthermore, based on usage requirements and customer specifications, these stations can be assembled into single-line, dual-line, or multi-line configurations.

II. Industry Pain Point: Using Minimal Equipment to Monitor More Channels, Achieving the Full-Spectrum Smart IoT Goal of "Monitoring, Collecting, Transmitting, Reporting, and Controlling"

Traditionally, pressure or differential pressure monitoring inside regulating stations relies entirely on mechanical gauges, requiring extensive manual meter reading by maintenance personnel. This approach is inefficient and slow to respond to emergencies. The IoT concept can largely resolve these issues. By installing pressure transmitters to collect real-time pressure data from the station's inlet and outlet, and uploading it via wireless communication technology to the customer's operation and maintenance monitoring platform, real-time viewing of pressure data at designated points is achieved. Setting alarm thresholds enables immediate notification to maintenance personnel in case of abnormal pressure, allowing for prompt and proper handling.

III. Product Features: Compact Size, High Capability, Dual Channels, Multi-Platform Support, Quick Connectivity

The WE-T180 is a series of dual-channel pressure monitoring transmitters, offering transmission methods including LoRa, RS485, 4G, and NB-IoT, with power supply options of battery or 24V DC. The pressure transmitter utilizes high-stability digital sensors to achieve real-time monitoring and calculation of on-site pressure. It employs communication technologies like LoRa, RS485, 4G, and NB-IoT for long-distance data transmission. Combined with West-HN's industrial edge computing gateway products, data can be uploaded to the West-HN Device Management Platform or directly to a customer-specified server, enabling real-time collection, analysis, calculation, storage, and display of on-site pressure parameters.

The transmitter features a split design between the main unit and the probe. To meet diverse on-site requirements such as measured medium, pressure range, and installation method, it offers various pressure ranges and probe specifications with different installation dimensions, optimally matching application scenarios. It is widely applicable in building automation, industrial sites, municipal projects, and more. The WE-T180 series connects to probes via "single-unit, dual-pressure acquisition channels" and boasts the following technical parameters:

• Reportable data can be two individual pressure values or the pressure difference.
• Main unit dimensions: 78(W) * 121(H) * 51.4(D) mm (approx. adult palm size).
• Embedded 19000mAh high-energy-density battery provides a lifespan of 5-15 years depending on reporting frequency.
• Flexible pressure range selection; common ranges for gas pipelines: 0~0.2MPa / 0~0.4MPa / 0~10MPa.
• Flexible installation thread selection, supporting both metric and imperial standards; primarily M20 and M16 metric threads for gas pipelines.
• Supports RS485/LoRa/4G/NB-IoT communication. NB-IoT is typically used for gas pipelines to ensure battery longevity.
• Supports WeChat Mini Program for data reading and configuration, Bluetooth 5.1 communication and data interaction, and QR code scanning via Mini Program for debugging.
• Supports OTA remote firmware upgrades for convenient future maintenance.

IV. Configuration & Debugging: Bluetooth Connection, Platform Support, Easy Setup

The WE-T180 pressure transmitter supports data reading and configuration via WeChat Mini Program using Bluetooth/QR code scanning. It employs the MQTT protocol with standard JSON format, ensuring simple and convenient platform integration. Users can directly interface with the hardware to obtain data or connect via the West-HN Device Operation and Maintenance Platform.

V. Installation: Compact Device, Easy Installation, High Protection Rating, Strong Adaptability

The WE-T180 main unit supports various installation methods including magnetic mounting, pole clamping, and wall mounting. Based on size assessment, the actual installation effect is approximately as follows:

The device antenna can use a rubber-duck antenna (inside the enclosure) or a suction-cup antenna (extending outside the enclosure).

For online consultation and industry insights, please add the QR code below. A professional engineer will add you to the group, where you can obtain the free document: "Application Cases and Solutions for WE-T180 Series Dual-Channel Pressure Transmitters in Pressure Regulating Station Scenarios".