The Host Link NXA822 provides data to host systems (such as PLC or DCS) via Modbus as one part of Tankvision. Tankvision is a 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 is ideally suited for small tank farms with only a couple of tanks, but also for large refineries with hundreds of tanks.
Provides data to host systems (such as PLC or DCS) via Modbus. Suited for small tank farms with only a couple of tanks, but also for large refineries with hundreds of tanks.
Ambient temperature: -40 to +60°C (-40 to +140°F)
Approved for custody transfer applications according to NMi and PTB
Benefits
A robust industrial operating system with embedded software ensures high stability and availability
Approved for custody transfer applications according to NMi and PTB
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 - license free
Predefined or customized operator screens for typical operation of a tank farm
Common hardware platform for all components; no hard disc or fans - no wearout
Setting up and monitoring equipment at an ammonia plant presents significant challenges. Engie Energía uses advanced technological solutions, like remote communication devices in hazardous areas.
Host Link with embedded web server for the communication of data of up to 6 connected Tank Scanner NXA820 to other systems via Modbus
Input
Tankvision Tank Scanner NXA820
Output
Modbus RS485 Modbus RS232 Modbus TCP
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 Seriell RS232/ RS485
Configuration
Web server
Measuring principle
Level radar
Characteristic / Application
Host link Communicates data to other system (Modbus). Up to 10 tank scanners can be assigned to one host link (up to 150 tanks). The inbuild web server enables the user to configure the device.
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