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2 measurement and control system, A typical measurement system consists of – Thermo Fisher Scientific Alpha pH 2000D User Manual

Page 9

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2.2

Measurement and Control System

A typical measurement system consists of:

A pH/ORP process controller

A pH/ORP combination electrode with integrated or separate temperature sensor NTC300

thermistor.

An appropriate pH or ORP measurement cable

An immersion, flow or process assembly with or without a potential matching pin (PMP)

A final control element such as pump or valve

A chart recorder

Power Mains
(80 - 250 VAC)

0/4 - 20 mA

Measurement Cable

Housing and
Sensors

Chart Recorder

Alpha pH 2000D Transmitter

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