WBL300 SERIES
Walchem WBL Series controllers keep boiler water at the correct conductivity
by automatically blowing down water at high solids levels and adding low conductivity
make-up water. Simultaneous control of chemical feed inhibits corrosion, solids precipitation
and scale build up. Intermittent sampling is available to facilitate inexpensive operating
costs on small boilers. The WBL c o n t roller features four methods of chemical feed via the
program menu. One unit takes the place of four separate models, and addresses applications from
the typical to the unusual.
Four Chemical Feed Options
� Feed & blowdown simultaneously, with or without feed lockout timer
� Feed after blowdown has finished, as a % of blowdown time
� Feed as a % of time elapsed
� Feed as a % of make-up water volume
Timed Sample Conductivity Control
Intermittent, rather than continuous sampling reduces operating costs on small boilers.
Detects Flashing During Timed Samples
Rechecks the conductivity after the sample valve closes and reopens if the reading is now
above set point.
Extended Capabilities
Optional isolated 4-20 mA output proportional to the conductivity reading. Accessories include flow
meters, motorized ball valves, orifice unions, flow control valves, diverter valves, solenoid valves,
chart recorders, pumps and tanks
WCM300 SERIES
The WCM Series Condensate Monitors control the conductivity of a boiler�s condensate.
When conductivity of the condensate exceeds an operator adjustable
set point, the unit initiates the opening of a diverter valve to prevent contaminated
condensate from returning to the boiler or sets off an alarm, or both.
WBL boiler controllers and WCM condensate monitors are low cost, microprocessor-based,
menu driven industrial controllers. Exceptionally versatile, units are easily customized on site.
