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Sugar solution leak monitoring
Industry: Food
Product : Inductive conductivity meters


Sugar Solution Leak Monitoring
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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 ISC202 and ISC402 inductive conductivity meters, 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.
Measurement system
 
2-wire inductive conductivity system
  Sensor: ISC40G(J)-GG-T1-☐☐
  Transmitter: ISC202G-1-E
  Dedicated distributor for transmitter: PH201G-A☐*B
 
4-wire inductive conductivity system
  Sensor: ISC40G(J)-GG-T1-☐☐
  Converter: ICS402G-C-1-☐-E
Sugar Solution Leak Condition
Sugar Solution Leak Condition
Process conditions
 
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 ISC402G)
ISC202G inductive conductivity transmitter
  Power supply voltage: 17 - 40 V DC (from distributor)
  Power consumption: 0.9 VA maximum
 
PH201G 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
 
ISC402G inductive conductivity converter
  Power supply: 100 V AC ±15%, 50/60 Hz
115 V AC ±15 %, 50/60 Hz
230 V AC ±15 %, 50/60 Hz
  Power consumption: 10 VA maximum
 
Cautions
  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.

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