Panel Mount Monitors
PM4-PH - pH Measurement
PM4-OR - ORP (Redox) Measurement

Setup details for output options are now in separate manuals. If an option is installed in your instrument, download the appropriate base manual and the appropriate options manual.

pH & ORP (Redox) Measurement		Brochure	Manual
PM4-PH	pH measurement with temperature compensation
PM4-OR	ORP (Redox) measurement
ADDENDUM	ADDENDUM Manual for PM4 Options (all PM4 Models)

pH and ORP electrode manual

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The PM4-PH is a panel mount instrument for pH measurement. Input is a single pH electrode and a temperature compensation sensor. The PM4-OR is a panel mount instrument for ORP (Redox) measurement applications. Input is a single ORP (Redox) electrode and a temperature sensor input. The temperature input is used for indication purposes. Both instruments have a single setpoint relay and this is fully programmable. Proportional/Integral control capability is included for the setpoint relay and for the optional 4-20mA analog retransmission.