Fast and Reliable Heat Exchanger Breakthrough Detection with Memosens Conductivity
Heat exchangers cool and convert steam into condensate. Once the steam has turned to condensate, it’s purity is high and conductivity value is low. Condensate contamination is very costly and affects the efficient operation of the plant, or even worse, the contamination can cause environmental pollution. Monitoring the conductivity of the condensate leaving the heat exchanger is a reliable method to ensure the heat exchanger is functioning properly and no “breakthrough” of the process water has occurred during the cooling process.
Typical installations usually include multiple conductivity sensors tied into several large panel-mount conductivity transmitters in a cabinet. This requires an inordinate amount of space in the cabinet and wiring.
Memosens® smart digital technology provides a maintenance-free solution for the operators. When using a SE 615 Memosens conductivity sensor, any contamination within the condensate water will be detected due to the sensor’s large measuring range of 10 μS/cm … 20 mS/cm. Technicians install the SE 615 sensor downstream from the heat exchanger where the process is much cooler. Based on operating pressure and temperature parameters, the SE 604 and SE 630 are also viable options for detecting breakthrough. Utilizing a CSS 120 static holder allows simple integration of the SE 615 sensor directly in-line with the process and is available in multiple insertion depths.
With the M4 Knick Memosens solution, fast and reliable conductivity measurement is tied into the compact (0.5” wide) DIN rail mounted MemoRail transmitter. The MemoRail transmitter frees up a significant amount of space within the control cabinet and eliminates the excessive amount of wiring used in the past. In addition, two 4…20 mA outputs from the MemoRail provide the measured values of both the conductivity and the temperature of the process to the operator.
What was this Customer’s Return on Investment?
- Time and Cost Savings:
The system efficiently handles the customer’s makeup water. This ensures new batches do not have to be made due to contamination. - Reliable Digital Measurement:
Memosens sensors detect leaks immediately. so there are no negative effects on the customer’s equipment or the environment. - Space Savings with Compact Digital Transmitter:
The compact, DIN rail mounted transmitter, MemoRail, saves space within the control cabinet. It precisely transmits both the measured conductivity and temperature values via two 4…20mA outputs.
