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Manufacturer

ChemtrolSanta Barbara, CA

CHEMTROL CH255 PPM/pH Digital Controller

Digital free-chlorine PPM and pH controller for pools and spas.

CH255Product-level specification18 product-wide fields3 technical documents

Engineering summary

CHEMTROL CH255 PPM/pH Digital Controller

Model Number: CH255
Controller Type: Digital
pH Control Range: 0.0-14.0 pH
Sanitizer / Free Chlorine Range: 0.1-10.0 ppm; optional 0.01-2.0 ppm
Sensor Inputs: Free chlorine solid-state electrode with 3 m cable, pH glass electrode with 3 m cable
Control Modes: Manual, Automatic, Proportional Feed

Product files

Configuration-specific files are listed first.

3 applicable

CHEMTROL CH255 Bid Specification

Specification · PDF · All configurations

Preview

CHEMTROL CH Series Manual

Manual · PDF · All configurations

Preview

CHEMTROL CH255 Brochure

Sales sheet · PDF · All configurations

Preview

View document details

Technical specifications Documents

Missing a project-critical value? Ask the manufacturer.

Manufacturer suppliedUpdated Sep 25, 202618 structured product fields3 applicable documentsVerify project-critical values before construction or procurement.

Technical specifications

Core product data stays visible

Configuration-specific values are separated from the product-wide specification, so important family data never disappears behind a disclosure.

18 visible fields

Product-wide specification

Applies across the product family

18 published fields

Identity

Model Number: CH255
Controller Type: Digital

Performance

pH Control Range: 0.0-14.0 pH
Sanitizer / Free Chlorine Range: 0.1-10.0 ppm; optional 0.01-2.0 ppm

Monitoring & Sensors

Sensor Inputs: Free chlorine solid-state electrode with 3 m cable, pH glass electrode with 3 m cable

Automation & Equipment

Control Modes: Manual, Automatic, Proportional Feed

Communications & Data

Alarm Capabilities: Audio, Visual, External, Out-of-range, Overfeed safety timer
Screen Display: 3-digit PPM LED and 2-digit pH LED

Water Chemistry & Treatment

ORP Control: Unavailable
pH Control: Standard
Sanitizer / Free Chlorine PPM Control: Standard

Electrical

4-20 mA Output: Optional
Electrical Input: 230 V or 24 VAC (specify)

Construction

Cabinet / Enclosure Rating: Polystyrene waterproof cabinet with clear window cover

Dimensions

Cabinet Dimensions: 22 x 18 x 10 cm in

Certifications

Certifications / Approvals: UL and NSF 50 Approved

Notes

Electronics Warranty: 5 years
Sensor Warranty: 2 years on PPM sensor

Documents

Technical resources

Configuration-specific files appear first. Product-wide documents remain available because they apply across the family.

3 applicable documents

CHEMTROL CH255 Bid Specification

Specification · PDF

Specification

All configurations

Preview Download

CHEMTROL CH Series Manual

Manual · PDF

Manual

All configurations

Preview Download

CHEMTROL CH255 Brochure

Sales sheet · PDF

Sales sheet

All configurations

Preview Download

System context

Manufacturer

Chemtrol

Santa Barbara, CA

View manufacturer profile Manufacturer website

Digital controller for direct free-chlorine PPM and pH control, with a solid-state free-chlorine sensor, proportional feed, alarms, and overfeed safety timers.