Companies
H2trOnics, Inc
Products
Walchem - Model W900 - Controllers

Walchem - Model W900 -Controllers

FromH2trOnics, Inc

The W900 series provides reliable, flexible and powerful control for your water treatment program.

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Paddlewheel Flow Meter

cooling tower biocide

water flow meter

flow control

setpoint temperature controller

Large touchscreen display with icon based programming makes setup easy
Universal sensor input provides extraordinary flexibility; the same controller can be used with almost
any type of sensor needed
Four I/O slots allow complete flexibility in adding additional sensors, analog inputs, and analog outputs
Multiple language support allows simple setup
Eight replay control outputs allow the controller to be used in more applications
Economical wall-mount package for easy installation
On-screen and web page graphing of sensor values and control output status
Complete flexibility in the function of each relay:
- On/Off Setpoint
- Time Proportional Control
- Pulse Proportional Control (when purchased with 4-20 mA or pulse solid state opto outputs)
- Flow Proportional Control (when purchased with 4-20 mA or pulse solid state opto outputs)
- PID control (when purchased with 4-20 mA or pulse solid state opto outputs)
- In-Range or Out-of-Range activation
- Probe wash
- Timer-based activation
- Activation based upon the state of a contact closure
- Timed activation triggered by Water Contactor / Paddlewheel flow meter’s accumulated total flow
- Activate with another output
- Activate as a percent of another output’s on-time
- Alarm
- Spike Set Point
- PPM Volume
- Target PPM
- For Cooling Tower and Boiler
  applications:
  - Biocide Timer
  - Boiler blowdown on conductivity using intermittent sampling
Datalogging
Email Alarm messages, Datalog reports or System Summary reports
Ethernet for remote access via the Internet, LAN or optional Modbus/TCP
Datalogging
Ethernet option for remote access via the Internet or LAN

Walchem - Model W900 -Controllers

Features