PES Boiler Automatic Blow-Down System

Perfect Engineering Services provides a reliable and comprehensive solution for PES Boiler Automatic Blow-Down System.

Our system features a sensor chamber equipped with a conductivity sensor and an integrated temperature sensor, which is installed in bypass to the Manual Blow Down Valve. This sensor is connected to a controller that continuously monitors and displays the TDS (Total Dissolved Solids) levels inside the boiler, taking necessary control actions as required.


Factors Influencing Boiler TDS Levels

  • Feed Water TDS: An increase in feed water TDS leads to a rapid rise in boiler TDS for the same steam load.
  • Steam Load: An increase in steam load results in a quick increase in boiler TDS for the same feed water TDS.

Maintaining Optimal TDS Levels

To keep the TDS levels within permissible limits, periodic draining of boiler water is necessary. This can be achieved through two methods:

TDS Based Auto Blow Down System

By continuously monitoring the boiler water TDS levels 24/7 and performing blow downs only when necessary, the following benefits can be achieved.

  • Fuel Savings: Optimize blow down quantity to save fuel.
  • Water and Chemical Cost Reduction: Lower fresh water usage and chemical treatment costs.
  • ETP Load Reduction: Decrease the load on the Effluent Treatment Plant.
  • Foaming and Moisture Control: Prevent foaming and moisture carryover.
  • Scale Minimization: Reduce scaling inside the boiler.


  • Optimal Performance and Maximum Efficiency: Precise control of TDS/conductivity to optimize blow down quantity and prevent scale build-up.
  • Detailed Monthly Reports: Easily download stored data from the controller to a USB flash drive. Develop comprehensive reports showing actual TDS levels over time, temperature variations, and more.
  • Efficient Customer Service: Quickly identify system updates with precise event logs detailing system operations.
  • Simplified Validation and Verification: Use stored data to validate water treatment results easily. Event logs provide details on system conductivity, temperature, and blow down times.
Manual Blow Down

Manual blow down involves a fixed pattern that does not account for changes in feed water TDS or steam load, leading to:

Excess Blow Down:

  • Increased fuel consumption due to loss of hot water.
  • Higher water consumption.
  • Increased makeup water and chemical treatment costs.

Insufficient Blow Down:

  • Elevated TDS levels inside the boiler.
  • Foaming, which can mislead Mobrey level control and potentially lead to accidents.
  • Moisture carryover due to foaming.

Perfect Engineering Services’ PES Boiler Automatic Blow-Down System ensures optimal boiler performance, efficiency, and safety by providing precise control and continuous monitoring of TDS levels.