Hospital HVAC Water Level Measurement

Within the vast global market of HVAC usage, the U.S. market will grow about 3.2% through 2011 to a total of $16.8 billion. New commercial construction ($11 billion) and replacement of residential units ($5.8 billion) are credited as drivers for that growth. You may not realize it, but HVAC systems are an integral part of our every day lives. Homes, office buildings, industrial plants, airplanes, cars and computer technology all rely on complex HVAC systems to create and maintain safe, healthy as well as comfortable living and working environments. At a Northeast hospital an EchoSwitch II LU77 controls a HVAC cooling tower. This hospital relies on cooling and ventilation for its 200 patients as well as refrigeration of food and medical supplies. Reliability and accuracy are critical. Any system downtime can lead to reduced patients healthcare through poor ventilation, spoiled food or ineffective medicine. The EchoSwitch II offers continuous level detection and 3 programmable relays for switch, pump control and fail-safety. Its push-button display makes configuration quick and easy. You can simply program the sensor and walk away or if set points frequently vary, make changes on the fly with no downtime.
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Reverse Osmosis Water Level Detection

Global reverse osmosis (RO) systems represent a $2.2 billion industry annually. The U.S. is the largest market comprising 55% of total global production or $1.21 billion. Industries that commonly use RO water include boiler feed water, beverage production and electronics manufacturing. In fact, many of the world's largest bottled water companies use RO as their prefered method of water filtration. RO is a preferred filtering method due to its simplicity and effectiveness of removing dissolved solids and other contaminants. RO works by applying pressure to unfiltered water on one side of a selectively permeable membrane. This membrane allows for only pure water to pass through the membrane to the other side while the remaining contaminated water is discharged. In this application an EchoSwitch II detects both low level and fill conditions. When the water level is low the EchoSwitch II signals a pump to fill the tank for continued production. When the FULL set point is achieved, the input valve is closed allowing for the water to be filtered, producing both wastewater and pure water. Once the filtration is complete the waste flush valve and product divert valve open and the RO process cycles again.
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Ferric Chloride Tank Level Measurement

Transportation of chemicals in the U.S. is a $40 billion a year industry, representing almost 8% of the chemical industry's cost of sales. Chemical transportation by rail represents 12.6% of revenue for large freight Class I railroads, making storage and safety an important factor for railroad industry success. Ferric chloride, a preferred wastewater treatment chemical, is a moderately strong Lewis Acid used in sewage treatment, drinking water production as well as a metal etchant for copper and stainless steel. The favored mode of transportation for this chemical is by railcar. At a railway station in the Southeast, aqueous ferric chloride is contained in bulk tanks prior to it being transported into sewage treatment plants. Ferric chloride is used as a wastewater coagulant, ideal for process treatment as it absorbs phosphorus and other heavy metals that creates a sludge. This sludge byproduct with its contaminants is then separated from the water and treated before disposal. A non-contact level solution was required for this application due to tank height and caustic contents. EchoSpan® is the perfect measurement application due to it's 32.8' (10m) range, simple push button configuration and is ideally suited for corrosive liquids with its PVDF transducer and NEMA 4X enclosure.
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Water Storage & Distribution Tank

Large-scale water storage in dry arid climates is an important buffer against rainfall variability. Some parts of the world can go months or even years with little to no rainfall. This makes clean, drinkable water a precious commodity and reliable cost-efficient water storage methods absolutely essential. Remember, you can live 3 weeks without food, but only 3 days without water. At this ranch in Texas, a 15 ft water storage tank is holding 9,000 gallons of fresh water for livestock when water is in short supply. Relay 1 is set to open a valve to empty the tank at 14.3 ft and relay 2 closes a valve to fill the tank at 5 ft. EchoSwitch® II is perfect for applications dealing with simple valve and pump control. EchoSwitch® II has 3 programmable relays that allows the user to control 1 pump or valve with 2 alarms, 2 pumps (lead-lag) with 1 alarm, 2 pumps (duplexing) with 1 alarm or 3 independent switch point alarms. If you require simple control and ease of configuration, then EchoSwitch® II is the solution you have been looking for.
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Cooling Tower Wastewater Storage & Reuse

Wastewater from cooling towers, also known as blow-down, can reach temperatures over 100°F as well as contain chemical residues and mineral deposits. Before this wastewater can be reused or released back into the environment, it must be treated and cooled. This is accomplished by storing the used water in a holding tank to allow the water to cool and be transferred to the next stage. Because this water may contain toxins that are harmful to plant and aquatic life, accurate measurement of the water level is critical to prevent overfilling. At this power plant an EchoSwitch II is maintaining level of wastewater in a large fiberglass tank buried underground. The EchoSwitch II is equipped with two relays; one high alarm and one low alarm, directly interfacing to a PLC for pump control. At high alarm the pump starts and moves water to the next stage of treatment. At low alarm the pump turns off to prevent burn out and allows tank to fill again. The EchoSwitch II is perfect for applications involving local area pump control. It is a reliable non-contact level solution to replace your stainless steel float tree that will corrode or fill with sediment. "We Do Your Level Best".
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HVAC Bulk Water Level Process Control

Bulk water storage tanks are used in conjunction with large HVAC installations to generate chilled water, resulting in better building temperature control. The chilled water is used to cool and dehumidify HVAC air in sizable commercial, industrial, and institutional facilities. Bulk storage water tanks can also serve to provide some or all of the buildings fire protection water storage. At this facility, the chilled water storage system cools water at night using off-peak electricity. In this application a relatively standard chiller is run at night to produce an ice pile. Water is circulated through the ice pile during the day to produce chilled water that is then used for heat exchange to provide cool air for the buildling. The EchoSonic II ultrasonic transmitter chosen for bulk water tank measurement automatically compensates for temperature allowing for accurate measurement. In addition, EchoSonic II level transmitters have broad application. They can also be used for measurement of corrosive, ultrapure, and dirty liquids by performance optimization through Digital Signal Processing, or DSP. The EchoSonic® transmitter's DSP, auto-adaptive filter enable any operator with plug and play installation, simplified and optimized signal output filtering as well as obstacle recognition, decreasing false signal detection for high or low water storage levels.
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Power Generation Sump Level Control

Thermal electric power plants make electricity by converting water into high-pressure steam that drive turbines. Used steam then passes through cooling towers where it condenses back to water for recirculation. US power plants draw in more than 200 billion gallons of water per day. The reliable management of water cooling, containment and delivery is core to their process. Here, an EchoSwitch II multi-point ultrasonic level switch-controller is mounted over a concrete sump. The sensor monitors water level and automatically empties the sump when full.
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Industrial Waste Sump Lift Station Control

Industrial manufacturers generate large volumes of liquid waste that is often collected in concrete pump lift stations prior to treatment. Flowline ultrasonic level switches are the non-contact solution for integral sump level detection and control. Each of the three relay channels can be configured as a single point alarm, two point latched automatic fill or empty, or two-point out of bounds alarm. It's lift station control made simple!
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Semiconductor Waste Lift Station Control

Semiconductor wafer process machines utilize highly corrosive media such as TMAH that must be collected and transferred into waste treatment. Traditional contact level control devices generally fail due to corrosion attack. Flowline ultrasonic level switches are the non-contact solution for sump level detection and control. Each of the three integral relays can be configured as a single point alarm, two point latched automatic fill or empty, or two-point out of bounds alarm.
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Wastewater Filter Level Monitor with Alarms

Wastewater is treated in multiple stages. Screen filters are often used in open channels to capture large debris and particulate as it enters the facility. Filter efficiency can be determined by comparing level height before and after the screen filters. Flowline ultrasonic level switches are the non-contact level solution for open channel flow monitoring. Its filter efficiency made simple!
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Cooling Tower Water Sump Level Control

Cooling tower water continuously evaporates and must be controlled. Conductance or float devices often fail due to material build-up or chemical attack. Flowline ultrasonic level switches are the non-contact solution for sump level detection and control. Each of the three integral relays can be configured as a single point alarm, two point latched automatic fill or empty, or two-point out of bounds alarm. It's water sump level made simple!
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Residential Storm Water Sump Control

Residential and commercial storm water collects in sumps and is emptied into the sewer system via a float based level controller. The problem is that sumps are collection points for dirt and debris which often causes float failure. EchoSwitch non-contact ultrasonic level switches provide reliable sump level monitoring and control in a single compact product. It's sump control made simple!
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Acid Waste Pump Lift Station Control

Photographic development systems generate highly corrosive acid waste that is often collected in pump lift stations prior to treatment. Flowline ultrasonic level switches are the non-contact solution for sump level detection and control. Each of the three integral relays can be configured as a single point alarm, two point latched automatic fill or empty, or two-point out of bounds alarm.
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