BC3150 Boiler Blowdown Controller

Where BC3150 fits in TDS blowdown control

BC3150 is the model route for steam boiler projects that need automatic control of boiler water TDS without adding bottom blowdown timing or Modbus communications to the same controller. It monitors conductivity, compares the reading with the setpoint and drives the blowdown valve to keep dissolved solids within the target range.

The controller is typically used with CP10, CP30 or CP32 conductivity probes and can also work in contaminated condensate monitoring arrangements where conductivity is used to decide whether condensate should be diverted.

Typical duties and selection intent

BC3150 is a practical fit when the project needs to:

• automate continuous boiler TDS blowdown
• reduce reliance on manual blowdown routines
• use 4-20 mA output for local monitoring or wider plant visibility
• add temperature compensation with a Pt100 input where conditions vary
• use pulse blowdown on smaller boilers to reduce water-level disturbance

If the immediate requirement includes bottom blowdown timing, trend display or RS485 / Modbus RTU, compare the BC3250 boiler blowdown controller.

Capabilities confirmed by current documentation

Current documentation confirms support for automatic TDS control, flushing, sensor cleaning output, 4-20 mA output and infrared communication. It also documents panel, DIN rail or backplate mounting for indoor control panels or suitable enclosures.

Before specification, confirm the conductivity probe type, probe mounting position, whether temperature compensation is required, the blowdown valve package and how the output signal will be used by the site.