Technical Data
CompareContinuous / Liquids
| Measuring Principle | Level radar |
| Characteristic / Application | Device with embedded web server for data acquisition and processing of field devices for up to 15 tanks |
| Communication | Ethernet |
| Metrological approvals and certificates | OIML R85 (2008): Compliance tested by NMi NMi PTB |
| Options | Potential free relay, SPDT Normally-closed when NXA is operating normally, open when NXA is powered off or fault status exists Switching power: -25 V DC, 100 W - 250 V DC, 4 A, 1000 VA |
Fieldbus components
| Measuring Principle | Communication Interface |
| Function | Device with embedded web server for data acquisition and processing of field devices for up to 15 tanks. |
| Input | Modbus RS485 Sakura V1 Whessoe WM550 Tankvision Gauge Link NXA20 |
| Output | OPC classic Rest API Tankvision Data Concentrator Tankvision Host Link NXA822 Tankvision Professional NXA85 |
| Relay output signal type | Potential free relay, SPDT Normally-closed when NXA is operating normally, open when NXA is powered off or fault status exists Switching power: - 25 V DC, 100 W - 250 V DC, 4 A, 1000 VA |
| Memory | 128 MB |
| Power supply | 90 - 250 V AC (50/60 Hz) 10.5 - 32 V DC |
| Dimensions (WxHxD) | 91 mm x 104 mm x 140 mm (3.6 in x 4.1 in x 5.5 in) |
| Communication interface | Ethernet |
| Operation | Web server |
| Configuration | Web server |
| Certificates | OIML R85 (2008): Compliance tested by NMi NMi PTB |
Software
| Measuring Principle | Inventory Management Solutions |
| Application Task | Data acquisition Data management Process monitoring & visualization |
| Field of Application | Tankvision Tank Scanner NXA820 is a device with embedded web server for installation in a cabinet. It collects measurements from connected field devices for up to 15 tanks and calculates volumes and masses for visualization and operation of storage facilities in the Oil & Gas industry. |
| Monitor resolution, display | 1280 x 1024 (or better) |
| Interfaces | OPC classic Rest API Tankvision Data Concentrator NXA821 Tankvision Host Link NXA822 Tankvision Professional NXA85 |
As part of the Tankvision system, the NXA820 tank scanner reads tank gauge parameters and performs calculations. The Tankvision tank inventory management system requires no dedicated software, can be operated via a standard web browser and incurs no license fees. Based on a distributed local area network (LAN) architecture and its modular structure, Tankvision is suitable not only for small tank farms but also for large refineries with hundreds or thousands of tanks.
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Advantages
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No license required
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Certified by NMi and PTB for custody transfer
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Global engineering and service support
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Powerful industrial operating system with integrated software, high stability and strong practicality.
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Modular design; suitable for all applications; can be upgraded as required
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Setup, commissioning and operation via web browser; no dedicated software required
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Each Tankvision component can be accessed by up to 10 users via any connected PC
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Application areas
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As part of the Tankvision system, the NXA820 tank scanner reads tank gauge parameters and performs calculations. The Tankvision tank inventory management system requires no dedicated software, can be operated via a standard web browser and incurs no license fees. Based on a distributed local area network (LAN) architecture and its modular structure, Tankvision is suitable not only for small tank farms but also for large refineries with hundreds or thousands of tanks.
Accessories / Spare parts
Source:Endress+Hauserpublic information from the website
Spare Parts & Accessories 2
Configurator / Comparison
Manuals & Documents 11
All documents for this model11 documents · click to expand
BA Tankvision NXA820, NXA821, NXA822 Chinese
BA Tankvision NXA820, NXA821, NXA822 English
Tankvision NXA820, NXA821, NXA822 Operating Instructions English
Tankvision NXA820, NXA821, NXA822 English
Tankvision NXA820, NXA821, NXA822 English
Tankvision NXA820, NXA821, NXA822 Description of Instrument Functions English
Tankvision NXA820, NXA821, NXA822 Operating Instructions English
Tankvision NXA820 OPC Server English
TI Tankvision NXA820, NXA821, NXA822 Chinese
Tankvision NXA820, NXA821, NXA822 English
Tankvision NXA820, NXA821, NXA822 English
Case Studies
Municipal Wastewater Treatment · tank farm — Application Case
Application Context
the inlet, biological and outlet stages of a municipal plant is a typical Municipal Wastewater Treatment duty. The project started from tank farm, focusing on centralised level and inventory gauging across a tank farm.
Process Constraints
effluent parameters drift and probes foul with sludge and biofilm, and high solids and corrosive fractions, with large diurnal flow swings only amplify it. The tank farm specification must therefore cover choosing the gauging method by tank size, medium and safety class, then networking them together.
Delivery Approach
Delivery was handled as the level range — level solution matched to the actual tank and silo geometry. Execution centred on choosing the gauging method by tank size, medium and safety class, then networking them together, together with stable compliance with Grade 1A discharge limits and online data reporting.
Field Results
Operation shows the benefit clearly — real-time inventory, making stocktaking and loss accounting more accurate, with confidence in this measuring point improving markedly.
Food & Beverage · tank farm — Application Case
Customer Profile
The typical setting in Food & Beverage is dosing, pasteurising, filling and CIP stages. The measuring point is tank farm; the focus is centralised level and inventory gauging across a tank farm.
Key Difficulties
Conditions are syrups, dairy and beverages that scale easily, under strict hygienic requirements and, on top of that, frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles, which a standard configuration cannot handle for long. The design therefore starts with choosing the gauging method by tank size, medium and safety class, then networking them together.
Implementation
The scope ran through the level range: level solution matched to the actual tank and silo geometry. Technically it hinges on choosing the gauging method by tank size, medium and safety class, then networking them together, and on these requirements: food-safety and hygienic design per 3-A / EHEDG.
Customer Benefit
In practice this means real-time inventory, making stocktaking and loss accounting more accurate, which cut the workload on the site maintenance team.
Chemical & Pharmaceutical · tank farm — Application Case
Project Background
The project covers reactors, metering vessels and finished-product tanks. The work centres on tank farm and the core task is centralised level and inventory gauging across a tank farm.
Operating Challenges
The medium and duty are characterised by highly corrosive media with solvents and crystallisation, partly in explosive atmospheres, and corrosion plus Ex protection shortens instrument life and makes downtime costly. So tank farm cannot be specified generically — it calls for choosing the gauging method by tank size, medium and safety class, then networking them together.
Solution
The Ainstru engineering team worked through the level range: level solution matched to the actual tank and silo geometry. The configuration involves choosing the gauging method by tank size, medium and safety class, then networking them together, with these requirements in view: Ex certification and GMP traceability of records.
Results
Since start-up the system has run steadily; the practical result is real-time inventory, making stocktaking and loss accounting more accurate.
Power & Energy · tank farm — Application Case
Project Overview
The site is boiler feedwater, turbine condensate and FGD/DeNOx systems. The customer wanted tank farm properly configured on the existing plant, with the aim of centralised level and inventory gauging across a tank farm.
Technical Challenges
What actually causes trouble is high temperature and pressure with both steam and saline water, and drift under high temperature and pressure, with very costly unplanned outages. All of this means the tank farm configuration has to involve choosing the gauging method by tank size, medium and safety class, then networking them together.
Configuration
Supply and installation were organised through the level range: level solution matched to the actual tank and silo geometry. On site this meant choosing the gauging method by tank size, medium and safety class, then networking them together, checked line by line against: compliance with power-industry codes and unit availability targets.
Performance
After commissioning the outcome is real-time inventory, making stocktaking and loss accounting more accurate, and the readings are now used for process tuning.
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