Glossary - Thermo Scientific Orion 2120XP User Manual

General Information

Glossary

Thermo Scientific Orion 2120XP Calcium Hardness Analyzer User Guide
Refer to Figure I-3.
Inlet Valve – Accepts the sample stream via 1/4 inch NPTF connector. The
operator must supply the sample with a pressure between 14 and 100 psig.
Inlet Filter – 60 micron stainless steel filter traps particulate matter in the
sample stream.
Bypass/Needle Valve – Used to redirect flow in the bypass system.
Pressure Regulator – Adjusts flow on the incoming sample stream.
Flow Meter – Measures the sample flow rate.
Check Valve – Prevents the backflow of sample.
Restrictor Tube Assembly – Used in conjunction with the pressure
regulator to lower downstream pressure.
Reagent Manifold – Directs the sample flow in and out of the reagent
bottle assembly.
Reagent Bottle Adapter Assembly – Connects the reagent bottle assembly
to the manifold.
Diffusion Tubing Assembly – Semi-permeable tubing through which
reagent diffuses into the sample.
Reagent Bottle – Contains formic acid reagent that lowers the sample pH
to below 4.
Flow Cell – Contains the calcium sensing electrode, reference electrode and
ATC probe.
Diverter Valve – Allows the flow cell reservoir to fill during calibration by
forming a closed-loop system.
Calcium Electrode – Senses calcium ions in the sample stream and
produces an electrical potential dependent on sample concentration.
Reference Electrode – Provides a constant reference potential and
completes the measurement circuit.
Reference Electrode Filling Solution Bottle – Provides constant flow of
electrolyte solution through the reference electrode for maximum stability.
I-8