Sugar Solution Leak Monitoring
In the past, the boiler feed tank systems in sugar factories had to be checked several times a day to make sure there were no sugar solution leaks. This was a very laborious process and, as continuous monitoring was not possible, monitoring results were not reliable. When a leak occurred, recovery operations were very costly and time-consuming.
With the FLXA202 and FLXA402 inductive conductivity analyzers, these are now problems of the past: both devices enable stable, continuous monitoring and the quick detection of sugar solution leaks, preventing serious problems from ever developing.
- Automatically detect sugar solution leaks in sugar factories
- Reduces operating costs
In sugar factories, crystallizers and concentrators produce a large amount of steam drain, which is reused as boiler feed water. However, sugar leaked during the boiler feed process can mix into this water. When that happens, the sugar can decompose into an organic acid at high temperatures, thereby decreasing the pH of the water. If the boiler operates with water at a low pH level, it can become corroded. The lowered pH needs to be raised to a normal level by performing a blowdown or the like, and the losses potentially caused by this process are not necessarily small. The sugar solution leak must be quickly detected before a minor problem turns into something much worse. For this reason, continuous monitoring is essential.
2-wire inductive conductivity system
|Dedicated distributor for transmitter:||PH201G-A☐*B|
4-wire inductive conductivity system
Steam return line of crystallizer outlet
|Measurement liquid:||steam drain (plus sugar solution)|
|Monitoring range:||0 - 200 μS/cm|
|Temperature:||approx. 80 °C|
|Alarm point:||100 µS/cm|
(contact output can be used with the FLXA402)
|Sugar Solution Leak Condition|
FLXA202 inductive conductivity transmitter
|Power supply voltage:||17 - 40 V DC (from distributor)|
|Power supply:||100 V: 20 to130 V DC/80 to 138 V AC, 47 to 63Hz |
220 V: 120 to 340 V DC/138 to 264 V AC, 47 to 63 Hz
|Power consumption:||24 V DC: approx. 200 mA |
100 V AC: approx. 7 VA
220 V AC: approx. 11 VA
FLXA402 inductive conductivity converter
|Power supply:||90 to 264 V AC, 50/60 Hz|
|Power consumption:||35 VA|
As the contact output of the PH201G is always magnetically excited, it should be kept closed even when the power is turned off to perform maintenance.
The FLEXA™ series analyzers are used for continuous on-line measurements in industrial installations. With an option for single or dual sensor measurement, they are the most flexible two-wire analyzer available.
Reusable SMART adapter, requiring only the analog sensor to be disposed of when it reaches the end of its lifetime. With the SENCOM 4.0 platform, Yokogawa delivers reduced costs and waste while contributing to its long-term business goals of a sustainable future for all.
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