Ratio:Guard® pH Monitor

pH Monitor
P-2S Ratio:Feeder® pH Monitor


Keeping track of chemical levels has never been easier using the Ratio:Guard® pH Monitor. These monitors use an inline probe to constantly measure the pH of the water. These products require minimal upkeep consisting of an occasional cleaning and calibration. They are very durable and are designed to serve day in and day out.

Note: The P-2S requires 120VAC. The P-2D requires 12VDC and is intended to be powered via battery or solar panel.

Ratio:Guard P-2 Information

Part # Description
P-2S pH Monitor w/BNC conv. & probe
P-2D pH Monitor 12VDC conv. & probe


06916 pH Calibration Kit
11578 P-1S to P-2S pH Control Upgrade
06924 pH Calibration Pillows(10 each/7&4)
11586 Replacement pH Probe
19632 Replacement Probe Tee Any Probe
19654 U-shaped Retainer Pin


Large LCD Screen

Easy to read

Inline Design

Unit constantly updates to show current conditions

4 Button Key Pad

Easy programming and operation

Probe, quick tee and cables are included

Easy installation

Unique Signal Converter Included

Maintains accuracy with long probe cable length

2 Programmable Relays

Operate alarms or can be used to turn pumps on or off

pdf icon Ratio:Guard® pH Monitor Manual

pdf icon Ratio:Guard® pH Monitor Specifications