Proper rinsing is one of the most important
steps in quality manufacturing or metal finishing. Plenty of low cost, good
quality water for rinsing has been available in the past, so rinse water
conservation has been largely ignored.
Today, this is no longer true. Tap water
costs have increased dramatically. Various new regulations are now in effect
which limit the allowable volume of wastewater. Others require wastewater
treatment. Still other laws tax the amount of water going down the sewer.
These factors have all encouraged many
manufacturers and platers to invest in automatic rinse tank control systems.
Many platers using automatic control systems for the first time are pleased to
discover a reduction in water usage of up to 80%.
This water use reduction provides two major
1. LOWER WATER BILLS
The savings possible with Myron L® automatic
Rinse Tank CONTROLSTIK
Systems are illustrated in the following table. Figures are based on a 50% water
reduction rate; the minimum that can usually be expected. Exact savings depend
on several variables, including the type and frequency of work loads, rinse tank
size, and type of contaminant.
NOTE: 100 cubic feet of water is equivalent
to 2831.5 liters/748 gallons.
2. WASTE TREATMENT SYSTEM INVESTMENT IS
The second major cost advantage of the
System: Reducing the investment required for waste treatment equipment. Because
less water is handled, smaller capacity treatment/recovery systems can be used
to meet government water pollution regulations.
Generally, rinse water contamination is
caused by chemicals being “dragged in” and salts that are dissolved from work
being rinsed. These solutions ionize and can be measured and controlled by
Electrical Conductivity (EC). EC measures both the total dissolved solids and
the non-solid (eg: acid) contaminants, thereby giving the most correct method of
control. As water contamination increases, so does the conductivity; the
automatic rinse tank controls operate on this principle. When conductivity
reaches the value selected as a control point, the water valve turns on to
dilute the contamination. When the contaminates are reduced by the dilution, the
conductivity falls and the water valve turns off.
The unit of measurement for conductivity is
the micromho (microseimens); Myron L® systems are calibrated to this unit. All
Myron L® Rinse Tank CONTROLSTIK II
Systems can be used in either normal tap water or in Deionized (DI) water tanks.
The dual range sensor can be set on either the 5-500 or the 500-5000 micromhos
range. The AUTOMATIC RINSE TANK CONTROL is briefly described below. All Myron L®
Systems consist of three components: Transformer Box, CONTROLSTIK Sensor, and
AUTOMATIC RINSE TANK MODEL
Reliable solid state electronics in a
heavy-duty, IP65/NEMA 4X Corrosion and water resistant tranformer
box enclosure. Suitable for any plating environment.
OTHER PRODUCTS USEFUL FOR
Also available from The Myron L® Company
are hand-held Conductivity & pH Instruments for “on-the-spot” water
quality testing. The Conductivity and pH sensors are built in for
maximum protection. The pH sensor is user replaceable.
continuous in-line water quality monitoring.