ATECH BC 900 - Description and Functions

SMART TDS BLOWDOWN CONTROLLER
2. DESCRIPTION & FUNCTIONS
2.1 Typical applications - BCS 950 & BCS 930 Automatic TDS Blowdown Systems
Smart Automatic TDS Blowdown Controller BC 900, detects the electrical conductivity (TDS - Total Dissolved Solids)
of boiler water via the Conductivity Probe CP 950 or CP 930.
The TDS Blowdown Control Valve BCV 900 opens and closes in response to a high TDS signal from Smart Automatic
TDS Blowdown Controller BC 900. Keeps open until conductivity of the boiler water drops.
If the conductivty is lower than the set point the TDS Blowdown Control Valve BCV 900 remains closed.
Please refer to "BCV 900 Installation and Operation Manual for Automatic TDS Blowdown Control Valve" and
"CP 950 or CP 930 Installation and Operation Manual for Conductivity Probe" for detailed information
before assembly.
1- BC 900 TDS Blowdown Controller 4- BCV 900 TDS Blowdown Control Valve
2- CP 950 or CP 930 Conductivity Probe 5- Valve
3- PC F20 Probe Connection Te 6- Check Valve
IM-BC900-18C Page 4
BC 900
www.atech-ltd.com
Figure 1 Application of Automatic TDS Blowdown Control System / BCS 930 & BCS 950
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