Chemtrol PC1555 PPM/pH Programmable Controller – Free Chlorine Control

The Chemtrol PC1555 PPM/pH Programmable Controller provides precise and automated control of sanitizer levels and pH in pools, spas, cooling towers, and industrial water systems. Using advanced microprocessor-based technology, the PC1555 maintains crystal-clear water quality while maximizing operator control and system safety.

This controller offers true Free Chlorine (PPM) measurement and control, unaffected by stabilizers or oxidizer levels, and automated pH regulation with user-selectable acid or base feed. A large LCD screen with full-text menus in English, French, or Spanish ensures clarity, and settings can be configured in either U.S. or metric units.

The PC1555 is also equipped with automatic data logging, a temperature sensor, Langelier Saturation Index calculation, and a safety flow switch that prevents chemical feed during low or no-flow conditions. Optional remote access is available via Ethernet or Wi-Fi for secure monitoring and programming from anywhere.

Key Features

• Free Chlorine (PPM) control from 0–10 ppm

• pH control with acid or base feed (0–14 setpoint range)

• Safety rotary flow switch to disable feed during no-flow

• Large LCD display with full-screen menu navigation

• Temperature display and Langelier Saturation Index calculator

• Automatic data logging for up to 999 test records

• USB port for easy datalog download

• Alarm system with visual, audio, and remote alerts

• Probe Alert Safeguard: alerts on probe failure

• Optional Ethernet/Wi-Fi communication for remote operation

• Compatible with all common sanitizers and oxidizers

• Flow cell with clear cover and 3 valves included

• 5-year warranty on electronics / 1-year on sensors

What’s Included

• PC1555 Controller

• Free Chlorine (PPM) Sensor

• pH Sensor

• Temperature Sensor

• Flow Cell Assembly

• Rotary Flow Switch

• USB data port

• Power Supply (110V or 230V selector switch)

• Operation Manual

Specifications

• PPM Control Range: 0–10 ppm

• pH Control Range: 0–14

• Conductivity Monitoring (optional): 0–20,000 µS/cm or ppm

• Temperature Range: 0–140°F (–18 to 60°C)

• Langelier Index: Calculated from pH, temp, TA, CH

• Sensor Calibration: 1, 2, or 3 points

• Control Modes: Off, Manual, Automatic, Timer ON/OFF, Proportional Feed

• Data Logging: 999 test records onboard, USB export

• Alarms: High/Low out-of-range, runtime, overfeed, probe failure

• Remote Operation: Optional Web server access via Ethernet or Wi-Fi

• Cabinet Dimensions: 14″ x 10.25″ x 7.5″ (36 × 26 × 19 cm)

• Electrical: 10 A / 110V or 230V switchable; 5 A relay outputs

• Shipping: 16″ × 16″ × 12″ (41 × 41 × 31 cm), 16 lbs (7 kg)