Application scope: a service-water buffer tank
A vented buffer tank supplying process water is a useful setting for a hydrostatic 液位 handover. A buyer may specify a 液位 probe, an installer may place it above the floor, and an operator may expect the screen to show height from the tank bottom. Agree on that meaning before accepting the channel. This is a general application note, not a report of a WESIVO customer installation or achieved operating result.
Give the measurement and the displayed 液位 separate names
WIKA explains that hydrostatic measurement concerns the liquid column above the 压力-sensing point. On the tank drawing, identify that point and its elevation relative to the project's chosen datum. Label the required display explicitly, for example “liquid height above tank-floor datum,” rather than simply “液位.” Retain the drawing revision with the channel configuration so a replacement probe can be placed and configured consistently.
Confirm that the tank is actually vented
Record the vessel's operating 压力 condition and the selected 传感器's 压力 reference. A lid alone does not establish whether the space above the water is at atmospheric 压力. WIKA describes vented 表压 probes using a reference tube in the cable; confirm the reference arrangement of the ordered version. Ask for its cable-termination and reference-path instructions. Do not assume an enclosure protection rating establishes those installation details.
Make a configuration sheet before installation
Use one sheet shared by procurement, installation and controls:
- Tank tag, drawing revision, display datum and sensing-diaphragm elevation.
- Actual water composition, 温度 envelope and density value with its basis.
- Required measurement span, selected output and matching receiver input.
- Immersion and cable-routing dimensions, termination location and access for maintenance.
- Supplier-confirmed wetted-material, seal and cable compatibility for the selected configuration.
Keep proposed alarm settings in the site's operating review. This note does not assign pump-control 液位s or certify a protective function.
Check the physical reference and the signal separately
Plan an agreed comparison with a suitable independent 液位 reference under documented conditions. Record the 压力 or probe-derived column height, the configured offset, the displayed tank 液位 and the receiver settings together. If the output is confirmed as linear 4–20 mA, the linked scaling guide can help document that signal mapping; it does not verify the physical 液位 measurement. Apply an offset at one documented location and check that it has not also been added in the display or 控制器.
Use WESIVO entries as configuration-review starting points
WESIVO publishes SL09A and SL09B submersible 液位-transmitter entries with the 液位-measurement catalogue. The SL09B listing includes LCD indication and adjustable density and range. These entries do not by themselves confirm suitability for the tank, a particular reference-path design, or automatic correction for changing water composition. Request the complete selected configuration and installation instructions with the quotation.
Deliver a usable record with the 仪表
Attach the approved drawing, order configuration, terminal details, density basis, scaling location and comparison record to the tank tag. State which settings must be reviewed after a probe replacement or a change of liquid. If purchasing needs volume rather than height, add a separately validated tank geometry or 液位-to-volume relationship. The companion technical guide gives labelled arithmetic examples for density and diaphragm elevation.
应用范围：工艺用水缓冲箱
通气工艺用水缓冲箱是静压液位测量的实际应用场景。采购人员订购投入式探头，安装人员可能将探头置于箱底上方，运行人员却希望屏幕显示相对箱底的液位。通道交付前应先统一这三个环节对“液位”的理解。本文是通用应用说明，不描述 WESIVO 客户安装实绩，也不宣称已取得运行成果。
区分探头测量值与要求显示的液位
WIKA 说明，静压测量对应感压测点上方的液柱。应在水箱图纸上标明测点，并记录其相对项目基准的高度。显示名称可明确写为“相对箱底基准的液位高度”，避免只写“液位”。将图纸版本与通道配置一起保存，便于更换探头时恢复一致的位置和设置。
确认水箱确实与大气相通
记录容器运行压力条件和所选传感器的压力参考。有盖板不等于液面上方一定处于大气压力。WIKA 介绍的通气表压探头通过电缆中的通气管取得参考压力；实际订购版本采用何种参考结构，需要单独确认。向供应商索取电缆终端和参考通道的安装说明，不能仅凭外壳防护等级推断这些细节。
安装前建立共用配置表
采购、安装与控制人员使用同一份表格：
- 水箱位号、图纸版本、显示基准和感压膜片高度。
- 实际水质、温度范围，以及密度取值和依据。
- 所需测量跨度、所选输出及匹配的接收端输入。
- 浸入深度、电缆布线路径、终端位置和检修空间。
- 由供应商确认的具体配置接液材料、密封和电缆兼容性。
报警设定值应进入现场运行评审。本文不规定启停泵液位，也不构成保护功能认证。
分别核对实际液位与信号通道
按约定方法，在有记录的工况下使用适当的独立液位参考进行比较。同时保存压力或探头计算液柱高度、配置偏置、屏幕液位和接收端设置。若已确认输出为线性 4–20 mA，可利用关联换算指南记录信号映射，但这不能代替实际液位测量核查。偏置应在一个明确位置实施，并检查显示器或控制器中是否再次叠加。
将 WESIVO 产品入口用于配置核对
WESIVO 已发布 SL09A、SL09B 投入式液位变送器入口及液位测量样册；SL09B 页面列有 LCD 显示、密度和量程可调。这些信息不能单独证明具体水箱适用性、某种参考通道结构，或对水质变化进行自动修正。询价时应索取完整订购配置和安装说明。
随仪表交付可复用的记录
将批准图纸、订购配置、端子资料、密度依据、缩放位置和比较记录归档至水箱位号，说明更换探头或改变介质后需要复核的设置。如果采购目标是体积而非高度，还应补充经验证的水箱几何数据或液位—体积关系。配套技术文章给出了明确标注假设条件的密度与安装高度算例。
沟通您的应用需求
请提供介质、工况、连接、输出、数量及收货地区，WESIVO 将在报价前核对配置。