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PC110x Programmable Controller – Process Water
- Product Details
- Specifications
- Installation
- Operation
- Remote Control
CHEMTROL® PC110x Programmable Controller
Designed for process water applications
The PC110x Programmable Controller is a versatile solution for process water applications in low or high-chlorine environments, featuring six programmable relays for precise pH and sanitiser control, with optional dissolved oxygen (DO), conductivity, and temperature sensors. Standard features include two water meter inputs, two programmable relays for additional equipment control, a super-sanitisation function, and an LSI display for water balance monitoring. The large, user-friendly 8-line LCD enables clear supervision and fast response to changing conditions.
Standard Features
- pH control with acid/CO2 or base feed
- Chlorine sensor (ppm) for sanitiser control in ppm or mg/L; suitable for low to high chlorine concentrations (0–2.0, 0–10.0, up to 200 mg/L)
- Supports optional sensors for dissolved oxygen (DO), conductivity (µS) or TDS (mg/L), and temperature
- Two water meter inputs using 4–20 mA signals
- Optional 4–20 mA output, Modbus, or BACnet protocols for seamless BMS and SCADA integration
- Langelier Saturation Index for water balance
- Remote alarm capability
Simple, Reliable and Flexible
Whether it’s a swimming pool, spa, aquatic centre, water park, or industrial water treatment facility, chemical automation is the simplest and most efficient way to maintain optimal water quality. Powered by advanced microprocessor technology, the CHEMTROL® PC110 sets a new standard in automated control of sanitisers, oxidisers, and pH. Designed for ease of use, reliability, and straightforward installation, it also comes with an industry-leading five-year electronics warranty.
See all six PC110 controllers side by side: Multi-Function Controllers & Analysers.
PC110x Specifications
| pH Control | 0 to 14, set-point for acid/CO2 or base feed |
| PPM Control | 0 to 2 ppm, 0 to 10 ppm, 0 to 100/200 ppm, with direct reading in ppm or mg/L |
| ORP Control | 200 to 999 mV, set-point for oxidiser or reducer |
| Cond/TDS Control | 0 to 20,000 mg/L (optional sensor) |
| Dissolved oxygen | Optional DO sensor |
| Super-sanitisation | Programmable super-sanitisation (shock treatment) and chemical saving cycles |
| Programmable relays | 2, for additional equipment |
| Relay outputs | 6 |
| Water meter inputs | Two, by 4–20 mA signal |
| Temperature readout | −18 to 60 °C |
| Langelier Index | Calculated from pH, temperature, 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 |
| Data logging | All data downloaded directly from the CHEMTROL® web-server portal |
| Alarms | High/low, out-of-range, run time and overfeed. Visual, audio and external alarms, with a dedicated remote alarm |
| Patented Probe Alert Safeguard | Dynamic probe testing with sensor failure warning |
| Communication (options) | 4–20 mA output; Modbus IP, Modbus RTU, BACnet IP, BACnet MSTP and LonWorks for BMS and SCADA; remote monitoring and control by Ethernet, Wi-Fi or a 4G/5G router |
| Mechanical | 34 x 29 x 17 cm, rain and splatter proof NEMA type 4X cabinet |
| Electrical | 10 A, 110/230 V with selector switch. All output and alarm relays 5 A |
| Approvals | UL, NSF 50 and CSA approved |
| Warranty | 5-year electronics warranty |
PC110x Installation
In our commitment to simplifying the installation of CHEMTROL® controllers, we have streamlined all components onto a customised assembly manifold for easy connection.
CHEMTROL® uPVC bypass line assembly
- Acrylic cell housing for chlorine (ppm) sensor
- Flow adjustment valves and flow indicator
- Optional pH, conductivity, and temperature sensors
- Safety flow switch
- Water sampling valve
- Non-return valves with two injection points, ready for dosing connection
CHEMTROL® PC110x – 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 its 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.
Sanitiser 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 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.
Setup Menu
Enables full system configuration, including initialisation 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.
Remote monitoring and control is an option on every CHEMTROL® programmable controller (standard on the PC7000 and PC7100), and a one-off purchase for the life of the controller – no ongoing fees. Connect the controller to your facility’s network with an Ethernet cable, just as you would a laptop. Where there is no network, a 4G or 5G router with a SIM card makes the connection; the SIM card’s data plan is the only subscription.
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.
A dedicated alarm relay sends any alarm straight to your BMS or PLC.
Stay connected to your facility anytime, anywhere with the CHEMTROL® Remote Monitoring System.