Define what pressure means in your process
Specify gauge, absolute or differential pressure before comparing models. Record normal pressure, minimum and maximum process conditions and any short-duration events the equipment designer expects. Give the engineering unit explicitly. A model name or a single maximum number is not enough to define a pressure measurement requirement.
Select a family around the installation
The 720 is a general pressure-sensor candidate with stainless-steel wetted parts. Consider the 728 when local LCD indication is part of the requirement. The 780T offers a smart gauge or absolute-pressure route with HART communication. Confirm the output and configuration on the individual quotation rather than treating these families as interchangeable.
Check the details that block installation
Send the connection standard, thread or flange drawing, wetted-material requirement and electrical connector details. Check process temperature separately from ambient temperature. Include installation space and display orientation where relevant. These details often decide whether a proposed transmitter can be fitted without changing the equipment.
Request a configuration, not just a price
A useful request includes the application, range, medium, temperature, process connection, output, power supply, quantity and delivery country. Ask for the applicable data sheet and configuration drawing with the quotation. Compare offers using the same specification, including any required calibration documentation, so a lower price does not conceal a different configuration.
先明确压力测量的含义
比较型号前，先明确表压、绝压或差压，记录正常、最低和最高过程压力及设备设计方预计的瞬态工况，并明确工程单位。型号或单一最大数值不足以定义完整测量需求。
按安装要求筛选系列
720 可作为不锈钢接液压力传感器的选型入口；需要 LCD 就地显示时可核对 728；需要带 HART 的智能表压或绝压方案时可核对 780T。应按具体报价确认输出与配置，不能认为不同系列可以直接互换。
检查影响安装的细节
提供连接标准、螺纹或法兰图、接液材质和电气接头要求，区分过程温度与环境温度，必要时补充安装空间和显示朝向。这些细节往往决定仪表能否不改设备直接安装。
询价应明确配置
有效询价应包含应用、量程、介质、温度、过程连接、输出、电源、数量和目的地，并索取对应数据表及配置图。用相同规格和校准文件要求比较报价，避免价格差异实际来自配置不同。
Discuss your application
Send your medium, operating conditions, connection, output, quantity and destination. WESIVO will review the configuration before quotation.