Fundamental Materials for Industries
Caustic soda and hydrochloric acid, produced in electrolyzer plants, are fundamental materials used in varieties of industries; chemicals, pharmaceuticals, petrol-chemicals, pulp and papers, etc.
Profitability from Efficient Production
Profit is the result of the effective production with minimized running / maintenance cost.
Effective Production
Proper control of the process brings you stabilized quality of products with the vast operational profit. The process condition may vary often. When conditions are changed, the process controller and sensors have to follow well.
Energy Cost
Ion-Membrane electrolysis bath is the most effective among all types of electrolyzer in caustic soda production. But it still consumes huge energy. Energy consumption has to be reduced to minimize the environmental stress like CO2 emissions, for increasing your profitability.
Maintenance Cost of Membrane
A Membrane has life time. It should be maintained periodically. To prolong operating life, the electrolyzer plant should be monitored for optimized control.
Tough Environments
There is an intensive electromagnetic field around electrolysis bath. In addition chlorine and other by-products are corrosive. Sensing devices have to be tough against such environment with providing accurate measurement all the time.
Total Cost of Ownership (TCO)
Maintenance costs for these sensing devices should be considered as TCO, next to the initial cost of your investment. Those should be in good balance.
Why Buy Yokogawa?
Our devices can afford to perform accurate measurements under tough condition in electrolyzer plant application. You can minimize these maintenance costs, achieving the maximum profit from the control of the process with accurate measurement.
Salt Dissolver: Monitoring NaCl
FLXA202 Inductive Conductivity Transmitter & PEEK Sensor |
Overview and Problems
- NaCl concentration monitoring
- Raw salt easily clog the sensor
- Correlation characteristic changes depending on components of salt
Solution
- Wide hole sensor, no clogging of suspended solids, etc...
- Concentration (Weight %) free programmable
- Recommend bypass sampling
Benefits
- Reduce maintenance cost
- Supply stable brine to electrolysis bath
Electrolysis Bath: Monitoring pH
FLXA202 pH Transmitter & Sensor |
Overview and Problems
- pH monitoring to detect membrane leakage
- Sensor is easily deteriorated by high temperature and saturated Chlorine gas
Solution
- Special anti-corrosive glass membrane
- Special anti-corrosive structure of Ag ion trap
Benefits
- Rapid detection of pin hole of electrolysis membrane
- Maintenance cost reduction
Electrolyzer Plant: Flow Measurements
ADMAG AXF Series Magnetic Flowmeter |
Overview and Problems
- Flow measurement in electrolyzer plants
- The stray current from electrolysis bath harms the measurement by magnetic flowmeter
- High corrosive liquids such as caustic soda, sulfuric acid etc
Solution
- Dedicated DC Noise Cut Filter to minimize the stray current
- 0.35 % of reading, highly accurate and stable measurement by Dual Frequency Coil Excitation Method
Benefits
- High accurate and stable flow measurement is realized in electrolyzer plant
- Simple maintenance
Liners and Electrodes Yokogawa can prepare a wide variety of wetted Parts Materials Lining: • SUS316L • Platinum • Tantalum, and more |
Electrolysis Bath: Cell Voltage Monitoring
Overview and Problems
- Need multi-channel data logging with fast sampling measuring each cell voltage
SMARTDAC+ GM10 Data Acquisition Unit |
Benefits
- Rapid detection of pin hole of membrane
- Longer maintenance period of each cell
- Less maintenance of relays
- Can accept other process inputs: pressure, temperature, pH, ...
Solution
- 100 msec sampling fastest
- Isolated inputs, high withstand voltage: 600 VRMS/VDC (cont.)
- Up to 420 ch per system, Ethernet interface for expandability
- Individual cell-voltage measurement with ± 0.005 V accuracy
- Long-life semiconductor relay
HCl Plant: Monitoring HCl Concentration
FLXA202 Inductive Conductivity Transmitter & PEEK Sensor |
Overview and Problems
- HCl concentration monitoring
- High concentration HCl easily deteriorate the sensor
Solution
- Special electrode material resistant to concentrated HCl
- Concentration (Weight %) free programmable
Benefits
- High stability and accuracy for quality control
Final Production: Monitoring NaOH Concentration
DM8 Liquid Density Analyzers |
Overview and Problems
- NaOH concentration monitoring after electrolysis tank and concentrate drum • Need accurate measurement not affected by temperature variation
Solution
- Special tuning fork sensor
- Stable density measurement against temperature change
Benefits
- High stability and accuracy, for quality control of Caustic Soda
Chlorine Gas Drying Process: Monitoring H2SO4
FLXA202 Inductive Conductivity Transmitter & PFA Sensor |
Overview and Problems
- H2SO4 concentration monitoring
- High concentration H2SO4 easily deteriorate sensor
- Various measurement range
Solution
- Special material resistant to H2SO4
- Concentration (Weight %) free programmable
- Wide range ability in terms of conductivity
(100 µS/cm – 2 µS/cm)
Benefits
- High stability and accuracy to improve efficiency of drying process
- Only 1 spare sensor for 3 steps drying tower tank
Sensor for Conductivity Yokogawa can prepare a wide variety of sensors and fittings Sensor Materials: • Direct Insertion • Flow Holder, and more |
Technologies Commit Users' Benefits
Our Goal:
Our shared goal is customer satisfaction through operational excellence. Yokogawa has brought true innovations to industry. We are committed to ensuring accuracy, reliability, and safety of your production system throughout your business life cycle. Our comprehensive solutions and expertise help you achieve more results with less total costs of ownership. Below key technologies shall aim for your operational excellence.
Inductive Conductivity Sensors
ISC sensors use a high performance engineering plastic of PEEK (polyetheretherketone) that provides abrasion and corrosion resistance. The sensor has a large bore (17 mm) for optimal resistance to fouling processes and when properly installed, the flow will keep the sensor clean, to help avoid measuring errors. This large bore also allows quick response even on low flow measurement. Also available upon request is a PFA lined sensor that provides excellent heat and chemical resistance.
Dual Frequency Coil Excitation
Magnetic Flowmeters measure flow volume with Faraday's law. The frequency of excitation current given to coils affects in the measurement accuracy and response time. Dual Frequency Coil Excitation is Yokogawa's original technology to ensure ± 0.35 % accurate measurement as well as 0.1 second fast response simultaneously. Our signal processing technique enables us to bring the benefits of an AC & DC magnetic flowmeter into a single magnetic flowmeter.
ASIC for Accurate Measurement
The measurement engine forSMARTDAC+ series is requested to ensure accurate measurement even under the sampling speed as fast as 10 msec measurement interval. This performance is achieved with by Yokogawa developed special A/D converter.
High Withstand Voltage
For performing accurate monitoring for each of cell voltage as well as other parameters like temperature, isolation between channels is the key. A/D circuits of SMARTDAC+ input modules use special transformers. Semiconductor relay, designed by Yokogawa, is another key component for tough isolation. This enables high-speed scanning, while eliminating the periodic replacement of relay board. In addition, SMARTDAC+'s input modules employ integrating A/D converters with superior noise rejection performance.
For Your Operational Excellence
pH/Inductive Conductivity Transmitter: FLXA202
- Designed for two-wire system configuration
- Touch screen display
- Rugged cast aluminum case
- Event logbook
- Intrinsically safe version
Liquid Density Analyzers: DM8
- Measures liquid density with high sensitivity and excellent stability
- Measuring range of 0.5 to 2.0 g/cm³, unaffected by flow rate and viscosity
- Sanitary and flameproof detector also available
Data Acquisition: SMARTDAC+ Series
- Modular layout up to 420 channels
- High speed sampling: 100 msec fastest
- High withstand voltage (Reinforced insulation): 600 VRMS/VDC (cont.)
- SD memory card for data backup
- Expandability over Ethernet
Magnetic Flowmeter: ADMAG AXF Series
- Best-in-class performance with dual frequency excitation method
- Predictive electrodes adhesion diagnostics
- Variety of liners & electrode materials
- Fieldbus communication capability
Pressure Transmitter: DPharp EJA/EJX Series
- Best installed performance
- Compact and rugged design
- Multi-sensing digital sensor
- SIL2 as standard (EJX)
- Fieldbus communication capability
Temperature Transmitter: YTA Series
- High resolution, high stability and high versatility
- Dual compartment housing for harsh environments
- SIL2 safety as standard feature
- Fieldbus communication capability
ADMAG AXF and SMARTDAC+ are registered trademark of Yokogawa Electric Corporation.
DPharp is a trademark of Yokogawa Electric Corporation. Ethernet is a registered trademark of Xerox Corporation.
Other company names and product names appearing in this document are registered trademarks or trademarks of their respective holders.
Industrie
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Base Chemical
Yokogawa has been serving the bulk chemical market globally and is the recognized leader in this market. With products, solutions, and industry expertise, Yokogawa understands your market and production needs and will work with you to provide a reliable, and cost effective solution through the lifecycle of your plant.
Prodotti e Soluzioni Correlati
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2-Wire Transmitter/Analyzer FLXA202
The FLEXA™ series analyzers are used for continuous on-line measurements in industrial installations. With an option for single or dual sensor measurement, they are the most flexible two-wire analyzer available.
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2-Wire Transmitter/Analyzer FLXA21
The FLEXA™ series analyzers are used for continuous on-line measurements in industrial installations. With an option for single or dual sensor measurement, they are the most flexible two-wire analyzer available.
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ADMAG AXF
The AXF magnetic flow meter is a sophisticated product with outstanding reliability and ease of operation, developed on the basis of decades of field experience. Based on FOUNDATION™ Fieldbus specifications, AXF Fieldbus Magnetic Flow meter models offer more flexible instrumentation.
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All-in-One pH/ORP Sensor Series FU20 and FU24
The FU20 and FU24, all-in-one pH and ORP, sensors show how Yokogawa applies the motto "Simple is best" to sensor technology.
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Data Logging Software GA10
The latest software that enables you to build a DAQ system without programming. Designed for maximum compatibility with Yokogawa recorders, data loggers, temperature controllers, and power monitors, GA10 can also acquire data via Modbus communications.
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In-Situ Gas Analyzer TDLS8000
Yokogawa’s new TDLS™8000 houses all of the industry’s leading features in one robust device. The platform design is for in situ measurements which negate the need for sample extraction and conditioning.
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Inductive (Torodial, Electrodeless) Conductivity Sensor ISC40
The model ISC40 sensors are designed for use with the FLEXA ISC analyzers. This combination exceeds all expectations for conductivity measurement in terms of reliability, accuracy, rangeability and price performance.
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Liquid Density Analyzer DM8C, VD6
The DM8 liquid density analyzer measures liquid density of general process liquids with high sensitivity and excellent stability. It has a measuring density range of 0 to 2.0 g/cm3, and unaffected by flow rate and viscosity. Besides general-purpose sensor, sanitary and explosionproof sensor are also available.
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Modular GM10
SMARTDAC+TM GM10 data logger has a modular architecture that can acquire necessary data. By supporting not only I/O but also many communication protocols such as 920MHz wireless, Modbus and so on. Monitor and setting changes are available through Bluetooth. Supporting FDA 21 CFR Part11 and AMS2750E/NADCAP.
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ROTAMASS Total Insight
It is the most technologically advanced mass flowmeter yet. By combining the superior design of the application specific flow sensor and transmitters with the Total Insight philosophy and functionality, the flexibility of the Rotamass to adapt to changing requirements guarantees performance throughout the lifecycle of the process measurement.
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YTA110/310/320 Temperature Transmitter
The YTA110/310/320 series is Yokogawa's base traditional temperature transmitter in the field-mount transmitter line.
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YTA50
The YTA50 is a 2-wire analog temperature transmitter that outputs a simple 4 to 20 mA output that correspondes to the temperature measured.
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YTA510 Wireless Temperature Transmitter
The high performance temperature transmitter YTA510 accepts Thermocouple, RTD, ohms or DC mill volt inputs. The transmitters transmit not only process variables but also the setting parameters using wireless signal. The transmitters run on internal batteries, and the installation cost can be decreased since hard-wiring is not required. The communication is based on ISA100.11a protocol specifications.
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YTA610 Temperature Transmitter
The YTA610 is Yokogawa’s essential class temperature transmitter. The dual-compartment structure allows a single or dual input with basic diagnostics on local parameter setting functions.
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YTA70
Like the YTA50, the YTA70 is a 2-wire analog temperature transmitter that outputs a simple 4 to 20 mA output that correspondes to the temperature measured. However, it adds HART 5 (Code -E) or selectable HART 5 or HART 7 (Code -J) digital communication.
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YTA710 Temperature Transmitter
The YTA710 is Yokogawa’s ultimate class temperature transmitter. The dual-compartment structure allows a single or dual input with advanced diagnostics on local parameter setting functions.
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YTMX580 Multi-Input Temperature Transmitter
YTMX580 can accept inputs from up to 8 points of measurement such as thermocouples (8 types: K, E, J, etc.) or RTD signals (3 types: Pt100, etc.), converting the corresponding measurement input values to a wireless signal. It can also accept DC voltage, resistance, and 4 to 20 mA DC signal input.
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Conductivity Analyzers
Conductivity meters, analyzers and transmitters are used for continuous process measurement and monitoring of conductivity, resistivity, WIFI, demineralizer water, RO water, percent concentration, boiler blowdown and TDS.
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Conductivity Sensors
Conductivity sensors and electrodes are used to measure process conductivity, resistivity, WIFI, demineralizer water, RO water, percent concentration, boiler blowdown and TDS. Various installation options including retractable, flow thru, immersion, and direct insertion. Proper electrode/sensor selection is critical for optimal measurement results.
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Coriolis Flow Meters
ROTAMASS is the integral and remote type Coriolis Mass Flow Meter. Both types have highly refined digital signal processing electronics, so that accurate and stable mass flow measurement is achieved.
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Data Loggers
Data loggers record sensor data over longer periods of time for monitoring, testing, and analyzing asset health and performance. Yokogawa data loggers are recognized by industry for superior reliability, noise immunity, measurement accuracy, and ease of use.
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Diaphragm Seal System
Diaphragm Seal System can be used to measure liquid, gas, or steam flow as well as liquid level, density, and pressure.
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Field Wireless
The flexibility of wireless solutions enables less investment in infrastructure while providing greater insights into plant operations.
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Gas Analyzers
Real-time gas analysis enhances efficiency, safety, throughput, product quality, and ensures environmental compliance.
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Liquid Analyzers
Liquid analyzers are used for monitoring process chemistry including water quality, providing process optimization and control.
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Magnetic Flowmeters
Yokogawa's experience with magnetic flowmeters spans decades. Our magnetic flow meters provide flexible configurations for industrial use in most areas.
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pH and ORP Analyzers
pH and ORP meters, analyzers and transmitters are used for continuous process monitoring of pH and ORP to ensure water/product quality, monitor effluent discharge, batch neutralization, pulp stock, scrubbers, cooling towers, chemical, water/wastewater treatment and many other applications.
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pH and ORP Sensors
pH electrodes and sensors are the sensing portions of a pH measurement. Various installation options including retractable, flow thru, immersion, and direct insertion. Proper pH electrode/sensor selection is critical for optimal measurement results.
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Pressure Transmitters
The accurate and stable measurement of process pressure with Yokogawa Pressure Transmitters supports the safe, reliable, and profitable operation of your plant.
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Temperature Transmitters
Yokogawa offers a full line of temperature transmitters that are head-mounted, panel-mounted, or field-mounted.