pH and ORP Analyzers

what-is-ph-orp분석계에서 정확한 pH 및 ORP측정값을 얻고 이 데이터를 정확하게 해석하는 것은 제품 품질을 보장하고 센서 수명을 정확하게 예측하는 데 매우 중요합니다.

Yokogawa의 pH와 ORP 측정 솔루션에는 신뢰할 수 있는 결과를 제공하기 위하여 실시간 온라인 센서 진단 기능을 갖춘 2선식 및 4선식 분석계가 포함됩니다. 당사의 pH 및 ORP 분석계는 최신 분석계 센서 기술을 사용하여 예측 가능한 유지보수 기능으로 개선된 센서 유지 관리 및 교체와 관련된 시간과 비용을 절감하여 OPEX를 최적화합니다. 

 

  FLXA402 FLXA202/FLXA21 PH450
 

지역 분류 비방폭
 Class I Div II
비방폭
Class I Div I
방폭 Class I Div II
비방폭
Class I Div II
전원 공급 110VAC, 24VDC
(4선식)
24VDC loop-powered
(2선식)
110VAC, 24VDC
(4선식)
통신 4-20mA, HART, Modbus
(Ethernet, RS-485), Bluetooth
4-20mA, HART, FF and PA* 4-20mA, HART
접점, 릴레이 4 SPDT relays None 4 SPDT relays

*FF (FOUNDATION Fieldbus) 과 PA (Profibus) 통신은 FLXA21에서 이용 가능합니다.

FLEXA ™ 시리즈 분석기는 산업용 설비의 연속 온라인 측정에 사용됩니다. 단일 또는 이중 센서 측정 옵션이 있어 가장 유연한 2 선식 분석기입니다.

PH450 pH와 ORP 분석계인 PH450은 pH와 온도, ORP(Redox) 측정을 결합한 다변형 분석계로, mA 전류 출력 2개, 독립적인 SPDT 접점 출력 및 HART 등 다양한 출력기능을 통해 활용할 수 있습니다. 

반도체, 전력, 수자원 및 제약 산업에서 사용하는 순수 및 초순수 응용 분야에 적합합니다. 이 분석기는 센서에 프리 앰프가 내장되어 있지 않은 pH / orp 센서와 함께 작동합니다.

Class I Div I 및 Class I Div II 지역의 어플리케이션 프로그램 용입니다.

2선식 분석계 FLEXA™ 는 산업 설비의 연속 온라인 측정에 사용됩니다. 단일 또는 이중 센서 측정 옵션을 제공하므로 가장 유연한 2선식 분석계를 사용할 수 있습니다. FLEXA™ 모듈형 설계 시리즈 분석계 모델은 pH/ORP (산화환원 전위), 전도도(SC), 유도 전도도 (ISC), 용존산소(DO) 의 4 가지 파라미터 선택을 각 센서 모듈과 함께 제공합니다.

이 분석기는 Foundation Fieldbus 통신을 사용하는 2선식 (루프 전원 공급) 시스템 구성을 위해 설계되었습니다. Fieldbus Foundation은 "필드 버스는 지능형 측정 및 제어 장치 간의 디지털, 양방향, 다중 드롭 통신 링크입니다."라고 정의합니다.

pH와 ORP 분석계인 PH71/PH72는 작고 사용하기 편합니다. "원터치 교정" 및 온도 보정이 있습니다. 실험실 등급의 지능형 pH미터기로서 주머니에 맞는 크기와  가격대 입니다.

Optimize and eliminate surprise field maintenance, calibration and system configuration by utilizing real-time sensor diagnostic and predictive maintenance features built into Yokogawa pH and ORP analyzers.

Pure Water and Ultrapure Water

Purified water has very low conductivity, which means it is high in resistance because all the conductive components have been removed. In low conductive solutions combined with its susceptibility to contamination and temperature effects, makes accurate pH measurement very difficult. Pure water and ultrapure water is used in a variety of industrial processes such as semiconductor, power, water and pharmaceutical industries.

Achieving accurate and reliable readings using a traditional pH analyzer is challenging, however with the right equipment stable and accurate pure water pH measurements can be accomplished. 

Water and Wastewater

Water quality is crucial in all areas of life to process industrial automation. Applications such as aquaculture and chromium wastewater treatment rely on accurate pH and ORP measurements to ensure safe pH levels or proper control of chromium reduction processes.

Yokogawa's 4-wire and 2-wire pH analyzer solutions with suitable immersion fitting and sensors are ideal for measuring these crucial pH and ORP measurements.

Pulp and Paper

The demanding applications and severe process conditions in pulp mills pose challenges for accurate, repeatable and reliable liquid analysis measurements. Treating wastewater from pulp and paper plants requires maintaining proper pH levels, which can be controlled by referring to a pH analyzer.

Yokogawa pH and ORP analyzers include real-time sensor diagnostic and predictive maintenance features to continuously and stably measure pH levels, eliminate the need for frequent manual cleaning, and enable efficient use of flocculating agents.

Chemical

The chemical industry presents multiple challenges such as chemical attacks, maintenance, safety, consistency and reliability to any liquid analysis measurement. In flue gas desulfurization systems that use magnesium hydroxide (Mg(OH)2 ) slurry, the consumption of the desulfurization agent (Mg(OH)2 ) is controlled using online pH analyzers.

Yokogawa’s pH measurement solutions ensure stable, continuous pH measurement over long periods, reduce operating costs, and eliminate manual cleaning.

Application Note
Overview:

The term "cooling tower" is used to describe both direct (open circuit) and indirect (closed circuit) heat rejection equipment. Cooling towers are heat-transfer units, used to remove heat from any water-cooled system. The cooled water is then re-circulated (and thus, recycled) back into the system. Since the process water is re-circulated, the mineral concentration increases as a result of the evaporation. (AN10B01B20-01E)

Industry:Refining, Food and Beverage, Power, Oil and Gas, Pulp and Paper, Chemical

업종:
Overview:

There are a number of suppliers of oil and fat products used for edible purposes. These products include, but are not limited to olive oil, peanut oil, soybean oil, sunflower oil, lard, shortening, butter, and margarine. The raw materials for these products include animal by-products, fleshy fruits (palm and olive), and oilseeds. 

Industry:Food and Beverage

Overview:

One of the primary applications for high purity water is for boiler feed water. The measurement of pure water pH can be one of the quickest indicators of process contamination in the production or distribution of pure water. Effective chemical treatment of the feed water is vital in maintaining the useful operating life and minimizing maintenance costs of the boiler.

Industry:Power, Pharmaceutical, Common

Overview:

Control of sodium chloride (NaCl) concentration at a salt dissolver where solid salt is dissolved in water, is highly important because of the electrolysis efficiency. A conventional way of measuring the concentration of supersaturated NaCl solution had been performed by using non-contact type sensors (e.g., γ-ray density meter) since NaCl, impurities, and precipitates are in the solution.

Overview:

Most zinc are produced at hydrometallurgically, where a high-grade zinc product can be obtained and valuable metals mixed in the raw material can be recovered. In the hydrometallurgy, the raw material of zinc concentrate is roasted and then dissolved in sulfuric acid to remove impurities. The process called leaching and pH control of the leachate is important.

Industry:Chemical, Power

Overview:

The control of the world's water resource is arguably one of the most important issues. Water demand from industry and domestic users is set to rise throughout the industrialized world. Yokogawa has been applying minimized maintenance measurement systems.

Overview:

In the manufacturing process of Pharmaceutical, Chemical and Food & Beverage industries, the cleaning and sterilization of tanks and piping are done with various cleaning solutions, fresh or hot water and steam after manufacturing products. Clean-In-Place (CIP) is the system designed for automatic cleaning and disinfecting.

Overview:

Problems at the wet end of a paper machine can rarely be corrected down stream. That is why monitoring and controlling pH in pulp stock is critical to the paper making process. Essentially, at every stage in the manufacture of paper, correct pH values play a vital role. Variations in the pH value at the head box have a negative effect on the quality of the paper produced.

Overview:

Cyanide-bearing wastewater from mining and electroplating facilities and certain types of chemical plants is toxic and must be treated by oxidation with chlorine or chloride to bring the cyanide concentration within regulatory limits.

Industry:Electrical and Electronics

Overview:

The treatment of wastewater from pulp and paper plants is a serious environmental concern. Yokogawa's submersion holder with an ultrasonic+air-jet cleaner (customized product) can reduce the manual cleaning frequency to just once every one or two months.

Industry:Pulp & Paper

Overview:

Continuous technology improvement is ongoing in the pulp & paper industry to obtain the best possible performance. Problems at the wet end (stock preparation) can rarely be corrected downstream. That is why monitoring and controlling pH in pulp stock is critical to the paper making process. Essentially, at every stage in the manufacture of paper, correct pH values play a vital role.

Overview:

Reverse osmosis (RO) is a separation process that uses pressure to force a solution through a membrane that retains the solute on one side and allows the pure solvent to pass to the other side. More formally, it is the process of forcing a solvent from a region of high solute concentration through a membrane to a region of low solute concentration by applying a pressure in excess of the osmotic pressure.

Overview:

Sour Water is the wastewater that is produced from atmospheric and vacuum crude columns at refineries. Hydrogen sulfide and ammonia are typical components in sour water that need to be removed before the water can be reused elsewhere in the plant. Removal of these components is done by sending the sour water from the process to a stripping tower where heat, in the form of steam, is applied.

Overview:

Power plant boiler houses designed to burn coal or high sulfur oil are required by Federal and State pollution regulations to "scrub" (remove) sulfur dioxide from flue gasses to meet emission limits. SO2 in flue gasses is known to be harmful to the environment, as it is one contributor to the formation of acid rain. pH control is critical for the proper functioning of the scrubber system.

업종:
Application Note
Overview:

For control of batch neutralization, a pH measurement coupled with a timer-controlled chemical feed scheme provides very satisfactory results.

This system can be adapted for either acid waste or alkaline waste neutralization.

Application Note
업종:
Application Note
Overview:

Wastes have been considered to be a serious worldwide environmental problem in recent years. Because of increasing pollution, these wastes should be treated. However, industrial wastes can contain a number of valuable organic components. Recovery of these components is important economically. Using conventional distillation techniques, the separation of acetic acid and water is both impractical and uneconomical, because it often requires large number of trays and a high reflux ratio. In practice special techniques are used depending on the concentration of acetic acid. 

업종:
Application Note
Overview:

Sodium chlorate is an inorganic compound with the chemical formula NaClO3. It is a white crystalline powder that is readily soluble in water. It is hygroscopic. It decomposes above 300 °C to release oxygen and leave sodium chloride. Several hundred million tons are produced annually, mainly for applications in bleaching paper.

Application Note
Overview:

In flue gas desulfurization systems that use magnesium hydroxide (Mg(OH)2) slurry, the consumption of the desulfurization agent (Mg(OH)2) is controlled by using online pH analyzers. A great concern in the pH measurement is heavy staining of the pH electrodes by the Mg(OH)2 slurry. To ensure accurate measurement, frequent cleaning of the electrodes with an acid is required, adding to both maintenance workload and cost.

Industry:Chemical, Power

Overview:

In stable dispersion of fine particles is the pre-requisite for the selective flocculation technique involving separation of ultra-fine valuable particles from the gangue. Among mineral processing techniques selective flocculation technique is known to have outstanding potential of capturing the particles of particular mineral in slurry of mixed mineral system by selective adsorption of water soluble polymers known as flocculants.

Application Note
Application Note
Overview:

Brewery is facility to produce beer. Breweries process is the manufacturing process of beer, which is a fermented beverage with low alcohol content made from various types of grain. Wheat, maize and other grains can be used for this. Brewing process starts from malted barley that is to form a mash by milling and mixing with hot water. The malt starches are converted to sugars during this process. This sugar rich water is then strained through the bottom of the mash and will be called as "wort". Then the wort will be brought to boil by bringing to the brew kettle. For bitterness or aroma hops are to be added at different times during the boil. Then the wort is cooled and aerated. And brewers yeast is added for fermentation. From the sweet wort the yeast produces carbon dioxide, alcohol and other byproducts. The GREEN BEER undergoes maturation after fermentation. Filtaration and carbonation are the last steps. Finally the beer will be stay in holding tank until it is bottled or kegged.

Overview:

After extraction from sugar cane or sugar beets, juice must be purified to remove the many other organics and minerals that accompany it. The processing to accomplish this is heavily dependent on reliable pH measurement and control as illustrated.

업종:
Overview:

Wastewater from electroplating facilities and certain types of chemical plants contains toxic forms of hexavalent chromium such as chromate and dichromate. The hexavalent chromium in this wastewater must be reduced before the water can be discharged. This requires a two-step process: hexavalent chromium (CR6) is reduced to trivalent chromium (CR3); and CR3 is precipitated as chromium hydroxide.

Industry:Electrical and Electronics

Overview:

 

 

Application Note
Overview:

Fish perform all their bodily functions in water. Because fish are totally dependent upon water to breathe, feed and grow, excrete wastes, maintain a salt balance, and reproduce, understanding the physical and chemical qualities of water is critical to successful aquaculture. To a great extent water determines the success or failure of an aquaculture operation.

Overview:

The lifetime of a pH sensor has a significant impact on the overall annual costs of a pH measuring loop. Optimizing four key factors will decrease these costs and optimize process control and overall plant efficiency.

Overview:

To facilitate the accurate measurement of pH, and its presentation as a scale, a range of "standard liquids" or "buffer solutions" are used. These liquids, whose constituents are accurately defined, have known stable values. Although in the preceding text the relationship to hydrogen ions has been made, research has shown, that the activity of hydroxonium ions (H30+) is more relevant.

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