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The HI2001 uses a spherical bulb, PVDF body, and PTFE junction with polymer electrolyte.
Spherical Glass Tip
The spherical shaped tip design allows for a wide area of contact with the sample. This permits a faster electrode response with a higher degree of stability. The bulb is protected by a PEI sleeve that gives the electrode resistance against mechanical stress.
Polyvinylidene fluoride (PVDF) is a plastic that is resistant to most chemicals and solvents. It has high abrasion resistance, mechanical strength, and resistance to ultraviolet and nuclear radiation. PVDF is also resistant to fungal growth.
This type of junction is often used on electrodes with polymer electrolytes. Porous polytetrafluoroethylene (PTFE) is a hydroORPobic material that is available with different porosities that helps to minimize clogging. Because of its chemical advantages, PTFE is widely used in industrial applications.
Double Junction Reference
A double junction electrode has an internal compartment surrounding the reference wire. Silver ions are present in the polymer electrolyte of the internal compartment, which houses the Ag/AgCl reference wire; the electrolyte outside this compartment is silver-free. The double junction design means that virtually no silver from the electrode enters the sample. This design allows measurement in applications where silver ions in the sample are undesirable or silver precipitates on the junction are likely to form
The HI2001 uses a BNC connector. This type of connector is universal in that it can be used on any ORP meter that has the female BNC probe input.
The ½” NPT thread of the HI2001 front end allows for in-line installation while the 3/4″ threads on the back end (cable side) allows for submersion mounting.
6 bar (87 psi)
-5 to 80°C (HT)
3 m (9.8’)
86 mm (3.4”)