| 摘要 |
<p>A modular control, provided for sensing characteristics of a fluid and contr olling the dispensing of additives into said fluid, is c ontained in a box-like housing (22) having an openable wall (34) which is sealable to a remainder of said housing in a water-tight manner. A plurality of printed circuit boards (74, 76) can be mounted in an interior of said hou sing. A display (66) is mounted on one of the housing wa lls. An input device (70) for inputting data and control commands is mounted on o ne of the housing walls. A user can select particular pr obes (102), signal conditioning boards (104), output control boards (116) and out put devices (122) to sense one or more fluid characteris tics (150) and control additive dispensers (122) to control the sensed characteri stics (164).</p> |
