9000 Precision Pressure Transducer

The Walchem Electrodeless Conductivity Controllers measure conductivity of a solution via an encapsulated, non-contacting sensor to control replenishment pumps and alarms.

They may be installed in a variety of very harsh chemical control applications, including oily cleaner baths, chromates, rinse tanks, fume scrubbers and other concentrated chemicals up to a conductivity of 1000 mS/cm.

Several conductivity ranges may be selected to configure the controller over a wide range of applications.

PEEK sensors for higher temperature, more aggressive chemical applications, or CPVC sensors for lower temperature, less aggressive chemical applications
Both available for in-line or submersible applications

Controls / Monitors baths with control and alarm relay for each

Time proportional and control option selectable on front panel keypad
Varies the pump or valve on time depending on deviation from set point

Monitor performance without taking the unit off-line, permitting faster troubleshooting and less downtime

Choice of measurement units in µS/cm, mS/cm, ppm or % concentration
% Concentration allows the user to enter up to 5 calibration data points

USB Flashstick Support standard for data logs, event/relay and reset logs, and user configuration file import/export

Datalogging
Ethernet option for remote access via the Internet or LAN

The W100P series provide an economical and reliable way to keep your water treatment program under control.

Key Features:

• Large display with icon based programming makes setup easy
• Compact ¼ DIN panel mount enclosure
• Universal sensor input provides extraordinary flexibility; the same controller can be – used with almost any type of sensor needed; conductivity (contacting and electrodeless), amplified pH/ORP, or
• disinfection
• Two pH/ORP models available for use with non-amplified electrodes with or without a – BNC connector
• Multiple language support allows simple setup no matter where your business takes you
• Four control outputs allow the controller to be used in more places than other entry level models

• Complete flexibility in the function of each relay
• On/Off Setpoint
• Time Proportional Control
• Pulse Proportional Control (when purchased with solid-state rel ays)
• In-range or Out-of-range activation
• Timer-based activation
• Activation based upon the state of a contact closure
• Timed activation triggered by a Water Contactor or Paddlewheel flow meter’s – accumulated total flow
• Activate with another output
• Alarm

Typical Applications:

• Wastewater neutralization & disinfection
• Food and Beverage disinfection
• Potable water treatment
• Swimming pools & spas
• Boiler water treatment control
• Cooling tower biocide control
• Metal finishing & printed circuit board
• Irrigation & fertigation
• RO Systems
• Condensate water treatment control

Walchem cooling tower controllers
The cooling tower control system shall be a capable of measuring system conductivity and temperature.

The conductivity sensors shall be either a contacting style or an electrodeless style. An optional second sensor shall be a choice of pH, ORP, PTSA, free chlorine, total chlorine, chlorine dioxide, ozone, Peracetic acid, or hydrogen peroxide.

Six digital inputs are available for sensors that shall include a flow switch, contacting water meter, paddlewheel flowmeter or other dry contact devices.

Outputs shall include six mechanical relays, and two optional 4-20 mA outputs.

Digital communications shall be via Ethernet. The controller shall be accessible via the Internet for configuring, data logging, and control of relay outputs.

The USB port shall provide the ability to upgrade the software in the controller to the latest version, save all the set points from a controller onto a USB flash disk and import settings into another W600 controller, and download datalog files to a USB flash disk. On screen graphing of one analog signal and one digital signal/relay state shall be available on the touchscreen display.

Datalogging
Ethernet option for remote access via the Internet or LAN