PC2100A Programmable Controller
- Product Details
- Specifications
- Installation
- Operation
- Remote Control
6-relay controller designed for Australian conditions
Suitable for: Commercial pools and spas, hydro pools & swim schools
The PC2100A programmable controller has been designed with Australian conditions in mind, with 6 relay output channels to control pH and sanitizer. Free and total chlorine (ppm) control with combined chlorine monitoring, ORP for sanitizer reference and oxidizer control backup, pH, TDS and temperature.
The PC2100A controller has also heating and main filter pump control, with a built-in remote monitoring that allows you to monitor your facility from a web browser or any mobile device. It has a user-friendly interface, allowing convenient programming and control of all your installed equipment.
Key features of the PC2100A controller include:
Remote access: You can control and monitor your pool or spa via our app, from anywhere at any time – using a computer, tablet or mobile device.
pH control: a choice of acid/co2 or base feed. Dedicated setpoint and relay output for both co2 & Acid.
PPM boost: primary and secondary sanitiser setpoints with dedicated relay outputs.
Programmable super-chlorination + chemical savings cycles: The PC2100A can be programmed to automatically perform super-chlorination cycles to shock your pool or spa, or to reduce the amount of chemicals you use by scheduling chemical feed cycles during off-peak hours.
Display of the Langelier Saturation Index: The Langelier Saturation Index is a measure of the potential for scale or corrosion to form in your pool or spa. The PC2100A can display the Langelier Saturation Index so you can easily monitor the condition of your water.
5 Year warranty: The PC2100A is backed by a 5-year warranty, which is industry-leading cover for your peace of mind.
Hassle-free installation: Everything is mounted onto a customised manifold ready for connection.
Enquire now: sales@chemtrol.com.au
Or call us on: 1300 585 820
Chemical Automation includes Free & Total chlorine level (ppm), pH, ORP and TDS
| Control Relay Output | 6x control relay outputs enabling precise automation of water chemistry with a comprehensive range of monitoring and control functions designed specifically for pools and spas |
| Chlorine Control (PPM) | Free and Total chlorine sensors with combined monitoring and display. 0 to 10 ppm with direct reading in PPM or mg/l PPM boost: primary and secondary sanitiser setpoints with dedicated relay outputs |
| pH Control | A choice of acid/co2 or base feed, 0 to 14. Dedicated setpoint and relay output for both co2 & Acid |
| ORP Control | ORP monitoring for sanitizer reference and oxidizer control backup 200 to 999 mV, Set-point for oxidizer or reducer |
| TDS Control | Salt level monitoring for chlorinators 0 to 20,000 mg/l with optional dump valve |
| Heating Control | Heating control with temperature monitoring and display Temperature from -18 to 60 C |
| Filter Pump Control | Main recirculation pump control: manual, automatic, daily schedule program & timer |
| Flow Control | Flow monitoring & totalizer with electronic sensor and adjustable alarms |
| Shock Treatment | Programmable super chlorination & Chemical saving cycles |
| Langelier Index | Calculated from pH, Temp, Total Alkalinity and Calcium Hardness. Water Balance display |
| Sensor Calibration | 1, 2 or 3 points |
| Control Modes | Off, Manual, Automatic, Timer, ON/OFF or Proportional Feed |
| Automatic Data Logging | Micro SD card for easy program updates and automatic data logging |
| LCD Display | Large 8-line LCD DISPLAY for easy operation |
| Remote Alarm | High/low, out-of-range, run time and overfeed Visual, audio and external alarms |
| Flow Cell Assembly | Flow Cell Assembly (FCA) designed specifically for pool and spa applications with safety flow switch |
| Patented Probe Alert Safeguard | Dynamic probe testing with sensor failure warning |
| Mechanical | 34 x 29 x 17 cm, Rain and splatter proof NEMA type 4x Cabinet |
| Electrical | 10A 110/230 V with selector switch, all output and alarm relays 5A |
| Approvals | UL, NSF 50 and CSA Approved |
| Warranty | Controller: 5-year electronics warranty Sensors: 2-year warranty |
Options available
- FLOW: Flow monitoring & totalizer with electronic sensor and adjustable alarms.
- ETHCOM: CHEMTROL® web-server communication – remote monitoring and control with identical duplicate screens technology
- 420M: 4-20mA signal (4-channels) for monitoring display outputs.
- BMS: Modbus/BACnet protocol communication for Building Management Systems.
PC2100A Installation
We want to make the installation of CHEMTROL® controllers as simple as possible. This is why we have everything mounted onto a customised assembly manifold ready for connection. This assures proper water sampling around the sensors and makes for a hassle free installation that minimises the integration work needed to get your water treatment system up and running.
PC2100A – Bypass line assembly
Dual ppm control with integrated pH, ORP, TDS and Temperature
Seamless controller setup: Choose between hardwired dosing pumps or General Purpose Outlets (GPOs) for easy dosing equipment connection.
Our Flow Cell Assembly (FCA) features 2 clear acrylic flow cells for Chlorine sensors (ppm), 2 flow control valves, a water sample valve, safety flow switch, and probes holder fitting.
The Controller assembly comprises a grey PVC backboard (600×400 mm), while the By-pass line assembly measures (600×500 mm).
CHEMTROL® PC2100 – Programmable Controller Overview
The CHEMTROL® Programmable Controller range offers advanced, user-friendly control and monitoring of all essential water quality parameters.
Below is a clear breakdown of the PC2100’s key features:
Main Display Screen
Provides quick access to all menus and settings. Operators can navigate using arrow keys and enter values with the keypad — no complex training required.
Sanitizer Menu (Chlorine/Bromine Control)
Controls chlorine or bromine dosing using an amperometric sensor. Operators can set control modes, calibrate sensors, adjust setpoints, and set alarms. Also allows manual or scheduled superchlorination to manage chloramine levels.
pH Menu
Manages pH using either acid, CO2 or base dosing. Includes calibration, control settings, alarm limits, and an Acid Wash program to help maintain sensor accuracy over time.
ORP Menu (Oxidation-Reduction Potential)
Controls ORP levels to ensure effective disinfection. Includes control settings, calibration, alarms, and additional options like Shocking and Chemical Saver Mode for improved chemical efficiency.
Saturation Index & Water Balance Monitoring
The controller continuously calculates and displays the Langelier Saturation Index (LSI) using real-time readings of pH, temperature, alkalinity, and calcium hardness. This helps you maintain proper water balance and provides early alerts to conditions that may cause scaling or corrosion, allowing you to make timely adjustments and protect your equipment.
TDS Menu (Total Dissolved Solids)
Automatically activates the dump valve when TDS or conductivity levels rise above the set threshold. This helps control water clarity and chemical balance.
Temperature / Heater Control
Displays current temperature and controls heaters. Operators can run the heater manually or automatically with a programmable 7-day schedule to save energy and maintain comfort.
Pump Control
Allows manual or timed control of the main circulation pump. This ensures consistent filtration and protects equipment such as heaters and sensors.
Setup Menu
Enables full system configuration, including initialization and communication settings. Ideal for adapting the controller to suit various facility requirements.
A Complete Water Management Solution
The CHEMTROL® Programmable Controller is a reliable and flexible solution for commercial pool and facility operators, delivering precise, automated water quality management with built-in safety, scheduling, and diagnostic features.
? Find out more: Advanced Control Features.
Remote Monitoring & Control – Anytime, Anywhere
Your facility operates 24/7, so your controller should be accessible anytime, anywhere.
All CHEMTROL® programmable controllers include secure remote access, allowing you to monitor and operate your system from a computer or through the CHEMTROL® App, available for both Apple iOS and Android devices.
The remote interface mirrors the controller screen in real time, making it easy to view live readings, adjust settings, acknowledge alarms, and troubleshoot – just as if you were standing in front of the controller.
Whether you’re managing a single site or multiple facilities, you can:
- Monitor your system and water quality in real time.
- Receive automatic alarm notifications by email or SMS.
- Make operational changes from anywhere.
- Access the controller from your computer, iPhone, iPad, or Android device.
- Enable secure remote support from authorised CHEMTROL® technicians when required.
Stay connected to your facility anytime, anywhere with the CHEMTROL® Remote Monitoring System.
