MINI CONTROLLERS
Mini Controllers
pH Mini Controllers Conductivity Mini Controllers
Monitoring and controlling pH in water condi-tioning and industrial applications is essential
for water quality and maintaining infrastructure
(piping and equipment). In the case of indus-
trial effluent, neutralization of acidic waste is
vital for environmental safety and public
health. In industrial applications such as
boiler feed water conditioning, a higher pH of
8.5 is necessary to prevent scaling and corro-
sion of critical components. Maintaining a pH
of 7.2 is fundamental for proper and efficient
sanitization in swimming pools and spas. The
effectiveness of sanitizers such as chlorine is
dependent on a controlled pH value. In water, an increase in conductivity indicatesan increase in water hardness and a decrease
in purity. Conductivity monitoring and controlis essential in reducing water hardness and
maintaining water quality. For instance, waterwith a conductivity value in the range of0-140 µS is considered "very soft" where as
water with a range of 640-840 µS is consid-
ered "hard" water. An increase in conductivityindicates an increase in the amount of damag-ing dissolved solids (salts) present in water.Conductivity monitoring and control is essen-
tial in industrial applications such as feed
water control, blow down activation in cool-
ing towers and water management where highconductivity will cause scaling and corrosionof piping and damage to critical components.
Resistivity Mini Controller
Resistivity, measured in MW (Ohm's), is theoptimal way to measure the quality of water
produced by high purity systems such as R.O
systems and water conditioning equipment. As
filter systems become less effective, the resis-
tivity value will decrease indicating a need for
maintenance and/or replacement of
industrial filters and
critical components. Properly functioning RO
and water conditioning systems will consis-
tently produce water with resistivity readings
in the range of 16 to 18MW.
ORP Mini Controllers
ORP (Oxidation Reduction Potential) is the
most dependable and consistent indicator of
the sanitizing effectiveness of your pool, spa
or treatment water. As oxidizers such as chlo-
rine, peroxide and ozone are added to water
for the purpose of sanitization, the ORP value
increases, providing a clear indication of the
cleansing power of the water. Typically, an
ORP value of 650 to 700 mV at a pH of 7.2
indicates that your water is properly treated
and all harmful bacteria are killed in less than
1 second. ORP is also essential in chemical
processing where reducing agents are used
and a negative ORP value is an indicator of
proper neutralization.
TDS Mini Controllers
TDS measurement is an important indicator of
water quality. An increase in the TDS readingindicates an increase in the amount of dis-solved solids (salts) present in the water. TDS
monitoring and control is imperative in indus-
trial applications such as feed water control,
blow down activation in cooling towers andwater management where high TDS will causescaling and corrosion of piping and damage to
critical components.
TDS measurement is also an important indicatorof the effectiveness of water conditioning
since an increase in TDS indicates an increase
in water hardness and a decrease in purity.
This will affect the quality of drinking water,
feed water and rinse water. TDS monitoring
and control is crucial in reducing water hardness
and maintaining water quality and usability.
BlackStone mini controllers are the perfect solution for water analysis and control
Any system can be cost effectivelymonitored 24 hours a day
Industrial Products Catalog
• www.hannainst.com
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