Walchem WIND (WebMaster Industrial) Series Water Treatment Controller

The Walchem WIND (WebMaster Industrial Water Controller) is an industrial water treatment controller in a NEMA 4X (IP65) enclosure that combines the functions of a transmitter, a PLC, a datalogger and an auto-dialer. It takes one to four direct analytical sensor inputs, plus optional analog and digital input boards, and controls eight relay outputs. An embedded web server lets operators view live data and change settings with a standard browser, without proprietary software. The WIND belongs to Walchem’s archive product group; for new projects see the Intuition-9 and the Intuition-6. As the Walchem distributor in Turkey, Mikron Proses (Üsküdar, Istanbul) supplies replacement sensors for existing WIND systems and provides application consulting for calibration and for the move to a current controller.

Existing WIND systems and replacement enquiries → Send us your requirement

SCR architecture: Sensor, Control, Relay

Unlike controllers with fixed algorithms, the WIND uses SCR mapping: you select any sensor input (direct analytical, 4-20 mA, flowmeter or discrete), choose a control method from a wide range and assign both to a relay. With up to 21 user-defined inputs, the controller can be programmed for virtually any water treatment application.

Technical feature	Walchem WIND (WebMaster Industrial)
Direct sensor inputs	One to four: pH, ORP, conductivity, electrodeless conductivity, free chlorine, chlorine dioxide, ozone, peracetic acid
Additional inputs	Optional board with eight 4-20 mA inputs; nine digital inputs (three standard, six optional), 0-300 Hz
Relay outputs	Eight: dry contact or powered relays, or four mechanical relays plus four opto-isolated pulse outputs
Analog outputs	Optional 4-20 mA output boards, up to four outputs
Communication and data	Ethernet with embedded web server, USB Plug and Play, optional modem cards, optional Modbus TCP/IP; e-mailed datalogs and summary reports

Web-based access and reporting

Through the Ethernet port or the USB connection, all sensors, calibration menus and historical data are reached with a standard web browser, and several users can access the controller at the same time. A graduated password system gives users access levels from view-only to full configuration. Alarms can be sent as cell phone text messages or e-mails, and datalog files and system summary reports are e-mailed automatically at user-defined intervals.

Current equivalents and sensors

The current Walchem controllers that use the same sensor base are the Intuition-9 and the Intuition-6; the earlier W900 has itself been discontinued. Sensors used on the WIND, such as the conductivity sensors, the WEL and WDS pH/ORP sensors and the amperometric disinfection sensors, are compatible with the newer Walchem controllers according to Mikron Proses. See the Walchem brand page for the wider range.