Endress+Hauser NXA20 Specifications

TI01175G/00/EN/02.15
71310502

Products Solutions Services

Technical Information

Tankvision Gauge Link NXA20

Inventory Management System with completely
integrated software for operation via standard web
browser

Application

Tankvision is a dedicated tank inventory system which is operated by a standard web
browser and does not require proprietary software or licensing costs.
Tankvision is based on a distributed architecture on a Local Area Network (LAN). Due
to its modular structure it can be adjusted to any application. It is ideally suited for
small tank farms with only a couple of tanks, but also for large refineries with hundreds
of tanks.
Tankvision consists of the following components:

• Tankvision Tank Scanner NXA820
scans parameters from tank gauges and
performs tank calculations (option)

• Tankvision Data Concentrator NXA821
summarizes data from various Tank Scanners NXA820

• Tankvision Host Link NXA822
provides data to host systems (such as PLC or DCS) via Modbus

• Tankvision Gauge Link NXA20
connects the Tank Scanner with tank gauges/sensors with Enraf BPM or Emerson
TRL/2 interfaces

Your benefits

•License-free

• Approved for custody transfer applications according to NMI, PTB and others

• Global system engineering and service support

• A robust industrial operating system with embedded software ensures high stability
and availability.

• Modular design; easily adjustable to any application; can be upgraded as required

• Configuration, commissioning and operation via web browser; no proprietary
software required

• Access for up to 10 users per Tankvision component from any connected PC

• Common hardware platform for all components; no hard disc or fans to wear out

• Volume calculations and correction included according to international standards
(API/ASTM/IP tables) in Tank Scanner NXA820 (optional)

• Predefined or customized operator screens for typical operation of a tank farm
(optional)

• Includes OPC Data Access server (3.0) for Windows PC

Table of Contents

Tankvision NXA20

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Inventory control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Application areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Function and system design . . . . . . . . . . . . . . . . . . . . . .4

System design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

System configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Typical system configuration . . . . . . . . . . . . . . . . . . . . .6

Wiring example for NXA820/821/822/20 . . . . . . . . . . . . . . . . 6

Function of the components . . . . . . . . . . . . . . . . . . . . . .6

Gauge Link NXA20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Inputs and Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Power supply NXA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Galvanic isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

RS-232 connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Fieldbus protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Mounting location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Ingress protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Electromagnetic compatibility (EMC) . . . . . . . . . . . . . . . . . . . . . 7

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Description of Instrument Functions . . . . . . . . . . . . . . . . . . . . 10

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Registered trademarks . . . . . . . . . . . . . . . . . . . . . . . . . 10

Modbus® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Microsoft®, Windows® and Internet Explorer® . . . . . . . . . . . 10

Java® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Mozilla® Firefox® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Enraf, Honeywell, Rosemount, Emerson, Saab, L&J, VAREC,

GPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Mechanical construction . . . . . . . . . . . . . . . . . . . . . . . . .8

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Installation considerations . . . . . . . . . . . . . . . . . . . . . . .8

System requirements

of user PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Shielding and Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Human interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Operating concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Languages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Certificates and approvals . . . . . . . . . . . . . . . . . . . . . . 10

Metrological approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Supplementary documentation. . . . . . . . . . . . . . . . . . 10

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

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Tankvision NXA20

Applications

Inventory control By using Tankvision to monitor the tank level and stored volume of valuable liquids remotely, owners

or operators of tank farms or terminals for petroleum products and chemicals (liquids) can visualize
the volume of the stored medium in real time. The data can be used to plan the inventory and
distribution. The data can also be used to manage tank farm operations like pumping or transferring
products.
Tankvision has its unique concept using network technology. Without using proprietary software, the
users can visualize and manage their valuable liquids stored in the tanks by a web browser.
Tankvision is a flexible and cost effective solution due to its scalable architecture. The application
coverage goes from small depots with only a few tanks up to refineries.

Choosing the "Interface only" option in Tank Scanner it becomes a fit-for-purpose interface unit to the
tank gauges for Tankvision Professional.

With the Gauge Link the Tank Scanner becomes a fit-for-purpose interface unit to the tank gauges
with Enraf BPM and Emerson TRL/2 Protocols.

Application areas • tank farms in refineries

• ship loading terminals

• marketing and distribution terminals

• pipeline terminals

• logistic terminals for tanks storing products like crude oils, refined white and black products,
chemicals, LPGs, fuels, biofuels, alcohols

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Function and system design

System design Tank management visualization without proprietary software

Tankvision is the first tank management visualization system providing its functionality without the
need to have proprietary software installed and maintained on a PC. The main functionality is realized
by embedded web pages in the Tankvision components. Tankvision uses an industrial proven operating
system and provides high availability. Tankvision is not based on a PC platform and runs independent
of connected PCs. This eliminates the need to maintain a specialized PC with a Windows operating
system and necessary updates and hot fixes. Tankvision web pages can be accessed from a standard PC
with a web browser. Multiple users with different roles can simultaneously log in to each Tankvision
component. Additional users can be added as required. There are no multi-user licence fees.
Please check with Endress+Hauser for recommendations on PC, operating system and web browser.

Tank management visualization for tank gauges/sensors with Emerson TRL/2 or Enraf BPM field protocols

Tankvision Tank Scanner is designed to interface with Modbus, Sakura V1 or Whessoe 550 field
protocols. This functionality is expanded by the Gauge Link for the Enraf BPM and the Emerson TRL/
2 field protocols.

Distributed architecture and scalability

Tankvision is based on a distributed architecture on a Local Area Network (LAN). Coordinated
components perform all inventory management tasks. The modular design makes it easy to enlarge
the system whenever required and to add further tank areas.
Thus, Tankvision is fully scalable and is ideally suited for applications of any size - from small tank
farms to large refineries.

Tankvision NXA20

Common hardware platform

The Tankvision components have dedicated tasks in a system, but have a common architecture, based
on a 32 Bit processor. The embedded tank management software uses a multi-threaded real time
operating system (RTOS), specifically designed for industrial applications. The hardware is designed
without wear-out components like hard discs or fans. This guarantees high reliability.

System configuration Configuration of the Tank Scanner

Each Tankvision component has its own data base and a web server. The components are connected
and exchange data with time stamp and status information. Data is optionally encrypted and secured
by a CRC checksum.
The Tankvision components are configured with static IP addresses, which are reserved on a DHCP
network.
The configuration pages are embedded in the Tankvision components and allow configuration of
Tankvision via a connected web browser without configuration software. No Internet access is
necessary, as all pages are loaded from the Tankvision system itself.

Configuration of the connected Gauge Link to the Tank Scanner

Bus termination and biasing are controlled by software selectable settings in the Tankvision Gauge
Link. By default, these are enabled for point-to-point links or the devices in a multidrop network that
are at the outer "ends" of the cable. If the Tankvision Gauge Link is part of a multi-drop network and is
not the "end" device on the cable, the termination and biasing may be disabled.

Configuration of the connected tank gauges/sensors to the Gauge Link

The diagnostic / service port generally remains unconnected during normal operation of the
Tankvision Gauge Link. The port has a 9 way "D" type socket connector. A suitable cable with mating
plug will be required for local connection of a service laptop PC or similar. A "standard" serial port, a 9­way fully wired plug – socket cable will be required. The cable should be wired pin-to-pin, i.e. 1-1, 2­2, 3-3, … 9-9. Proprietary cables will generally have all pins wired, though only pins 2, 3, 4, 5 and 7
are actually used. Cable length should not exceed 2 metres (6.6 ft).

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