Deionization is the process of removing minerals from water to produce pure water, which has a very low and/or nominal mineral content, or ultra pure water which is virtually mineral free. This process typically passes processed water through two separate beds, cation and anion, followed by a mixed bed. See Deionization - Twin Bed and Deionization - Mixed Bed applications for more information. The deionization process can be found in the following applications:
Laboratory: Used for cleaning and processing samples and cleaning glassware and other instruments. Using pure water reduces the possibility of contamination; experimentation and testing with impurities in the water can interact with test samples and cause erroneous results.
Electronics Manufacturing: Used for washing printed circuit boards and cleaning circuit board and electronic assemblies. Using pure water reduces the possibilities of minerals reacting with the metal leads which can cause corrosion and create premature failures.
Food and Beverage: Used in the manufacturing process and as an ingredient in some bottled drinks. Also used for the preparation of food items, as well as rinse water for cleaning purposes. Also used for serialization processes and as spot free water for wash and air dry containers.
Bottled Water: Used for the removal of minerals before the bottling process for clean tasting water.
Metal Finishing: Used for cleaning parts and final rinse water. Also used for spot free rinsing and chemical dilution
Medical: Deionized water is usually used as a back up to an RO system. Pure water is used for dialysis machines which require mixing of mineral free water with the dialysis solution. The medical requirements for saline and water directly introduced into the body dictate mineral free compounds since human body natural filter systems are bypassed.
Boilers: Used for low mineral make up water to help with corrosion and scaling.
Signet Product Line - Features & Benefits
Flow
515, 2536
• High quality, low cost
paddlewheel for reliable
measurement
• Wide flow range of for
measuring varying flow rates
• Choice of wetted materials for
compatibility to process
environment
• PVDF pin recommended
Pressure/Level
2450
• ¾ inch process connection
for easy installation
• 4 to 20 mA output available
for wiring directly to PLCs
or chart recorders
• Choice of pressure ranges
to suit various application
requirements
• Digital (S3L) output for long
cable runs without
compromising signal output
Conductivity/Resistivity
2819, 2820, 2821,
2839, 2840, 2841
• Stainless steel bodies with
threaded connections for
easy installation throughout
the plant
• DryLoc® connector with gold
pin contacts for easy
installation
• Short length conductivity
electrodes designed for
insertion into smaller pipe
sizes
• Temperature compensated
electrodes for use in
applications for conductivity
or resistivity
2850
• Digital (S3L) output for long
cable runs without
compromising signal
output
• 4 to 20 mA output option
with field selectable ranges
• Rated NEMA 4X to withstand harsh environments
pH
2724, 2726,
2774, 2776
• DryLoc® connectors for
quick & easy installation
• Reliable flat or bulb designs
for long service life
• Various mounting styles to
accommodate many piping
designs
Preamplifiers
2750, 2760
• Preamplified pH/ORP signals
for reliable signal output
• DryLoc® connector systems
for fast connection
to electrodes
• 4 to 20 mA output available
for wiring directly to PLCs or
chart recorders
• Digital (S3L) output for long
cable runs without
compromising signal output
