Introduction
Seawater leak detection is one of the post-condensation water quality management processes that are performed for power station boilers and similar facilities. Damage to the ion exchange resin, which deionizes the supplied water, is also monitored during this process, and both of these applications are executed by a conductivity analyzer.
Expected Benefits
- Detects seawater leakage and ion exchange resin damage
- Reduces operating cost
Process Overview
Boiler Water Quality Management Process
The above illustration shows where analyzers are used in the boiler water quality management process.
In the measurement point 
shown in the figure, two different signal ranges are needed for deionized water management and seawater leak detection. The FLXA402 can simultaneously generate output signals for two different ranges, meaning that a single unit can perform deionized water management concurrently with seawater leak detection.
Other applications for this conductivity analyzer include the management of deionized boiler water.
Solution Details
| Measurement system | 4-wire conductivity system |
|---|---|
| Converter | FLXA402-A-B-☐-C1-NN-A2-WR-☐-☐-☐-NN |
| Sensor | SC4A(J)-S-AD-09-002-☐☐-T1/PS |
| General Specifications | |
| FLXA402 4-wire Conductivity Converter | |
| Measuring range (at process temperature; C: cell constant) | |
| [Conductivity] | Minimum: 0 µ/cm |
| Maximum: 200 mS/cm x C (overrange: 2000 mS/cm) | |
| [Resistivity] | Minimum: 0.005 kΩ/C |
| Maximum: 1000 MΩ·cm | |
| [Temperature] | Pt1000: -20 to +250°C |
| Output setting range | |
| [Conductivity] | Minimum: 0.010 µS/cm |
| Maximum: 2000 mS/cm | |
| [Resistivity] | Minimum: 0.001 kΩ·cm |
| Maximum: 1000 MΩ·cm | |
| [Temperature] | Min. span: 25°C; Max. span: 270°C |
| Output signal: | two or four outputs of 4-20 mA DC + HART |
| Construction: | for outdoor installation, IP66, NEMA Type4X waterproof |
| Ambient operating temperature: | -20 to +55°C |
| Power supply voltage: | 90 to 264 V AC, 50/60 Hz |
| Power consumption: | 35 VA maximum |
| SC4A(J) Conductivity Sensor | |
| Electrode system: | two-electrode system |
| Cell constant: | 0.02 cm-1 |
| Measuring range: | 0 – 0.5 µS/cm to 0 – 200 µS/cm |
| Temperature range: | 0 - 110°C |
| Wetted material: | SUS316L, PEEK (polyether ether ketone) /PS Adapter (option code of SC4A(J)) |
| Material: | SUS316L |
| Operating pressure: | 1 MPa maximum (depends on the SC4A(J) Sensor) |
Industries
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Cogénération
La cogénération est une méthode efficace de production d'électricité et d'énergie thermique à partir d'une seule source de combustible.
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Cycle Combiné
Les centrales électriques à cycle combiné sont de plus en plus nombreuses à être installées dans le monde entier, là où l'approvisionnement en gaz naturel est important.
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Energie
Dans les années 1970, Yokogawa est entré dans le secteur de l'énergie avec le lancement du système de contrôle électrique EBS. Depuis lors, Yokogawa a poursuivi avec constance le développement de ses technologies et de ses capacités afin de fournir les meilleurs services et solutions à ses clients dans le monde entier.
Yokogawa a exploité le réseau mondial de solutions énergétiques pour jouer un rôle plus actif sur le marché mondial dynamique de l'énergie. Cela a permis un travail d'équipe plus étroit au sein de Yokogawa, en rassemblant nos ressources mondiales et notre savoir-faire industriel. Les experts de Yokogawa dans le domaine de l'énergie travaillent ensemble pour apporter à chaque client la solution qui répond le mieux à ses besoins spécifiques.
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Thermique
L'énergie thermique utilisant le charbon, le pétrole ou le gaz comme combustible représente la majorité de la production d'électricité dans le monde.
Les produits et solutions liés
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