咨询热线:021-80392549
发布信息

欧陆温度和过程控制器-2704锅炉控制器

点击图片查看原图
单价: 面议
所在地: 上海
有效期至: 长期有效
最后更新: 2017-06-26 15:27
浏览次数: 348
询价
店铺基本资料信息
产品详细说明
特点
Compact, integrated solution
Water level
Boiler pressure
Total dissolved solids
Timed bottom blowdown
Main steam warm up
TDS Input Module
A new module has been designed to measure TDS within a steam boiler. TDS (Total Dissolved Solids) is the measurement of the amount of solids dissolved in water. The module actually measures conductivity of the water. The more solids that are in the water the more conductive it becomes.

TDS Function Block
A TDS function block has been created to convert the measured conductivity value, as measured by the TDS module in mS, to a temperature compensated TDS value in PPM(parts per million) or mS/cm@25oC. The block also allows a user to set a Probe Factor to cater for the relationship between the conductance measured with the probe and the specific conductance of the fluid. The TDS PV is then wired to a control loop that removes water from the boiler when it exceeds the loop setpoint. This method of control is referred to as Continuous Blowdown.

Timed Bottom Blowdown
This block has been designed to initiate a Timed Bottom Blowdown to remove the sediment that accumulates at the bottom of the boiler. It is normally carried out at least once per day. The 2704 block can cater for up to three blowdowns per day.

A high integrity network connection between controllers ensures only one boiler is blowing down at any one time. This is essential because the blowdown-receiving vessel will usually only be sized to cope with one boiler blowdown at a time
Baidu
map