Technical Data
CompareContinuous / Liquids
| Measuring Principle | Level radar |
| Characteristic / Application | Field gateway for tank sensor operation and monitoring and integration into inventory control system |
| Specialities | Hydrostatic Tank Gauging (HTG) |
| Supply / Communication | 85-264VAC 52-74VAC 19-64VDC |
| Accuracy | Depend on the sensor |
| Ambient temperature | Standard: -40°C…60°C (-40°F...140°F) For calibration to regulatory standards: -25°C…55°C (-13°F...131°F) |
| Process temperature | Depend on the sensor |
| Process pressure / max. overpressure limit | Depend on the sensor |
| Main wetted parts | Non-contact |
| Communication | Outputs: Fieldbus: Modbus RS485, V1, WM550 HART, BPM and TRL/2 (via GE option) Analog 4-20mA (Exi/Exd) Relay (Exd) Inputs: Analog 4-20mA (Exi/Exd) 2-, 3-, 4-wire RTD Discrete input (Exd, passive/active) |
| Certificates / Approvals | ATEX, FM, IEC Ex, EAC, JPN Ex, NEPSI, UK Ex |
| Safety approvals | SIL Overfill protection WHG |
| Metrological approvals and certificates | OIML, NMi, PTB |
| Options | Redundant fieldbus Alu-coated or 316L housing Weather protection cover mounting kit pipe |
Field of application
The NRF81 tank side monitor is used for the integration and monitoring of tank measuring sensors. It integrates the data of multiple level, temperature and pressure tank sensors into the host control system. Different alarms and outputs are available as options.
Performs power supply and signal transmission for connected devices. Parameter setting and measured value display of connected devices. Tank farm calculation with precise calibration of tank deviations. W&M certified for use in custody transfer applications.
Output: Modbus EIA485 (RS485), Sakura V1
Temperature: -40...60°C (-40...140°F)
International explosion protection certification
Advantages
Hardware and software designed in accordance with IEC 61508, up to safety integrity level SIL3 (in homogeneous redundant systems)
Provides intrinsically safe power and communication for Micropilot radar level meters and Levelflex guided radar level meters
Simple connection to higher-level DCS systems via open protocols, simple installation and trouble-free operation
Explosion protection certified for use in hazardous areas
E+H product configurator
Please enter the product order code to configure
Product comparison
Please enter the order codes of the products you wish to compare in the fields below (up to three products)
Technical documentation
Technical data
Documents/Manuals/Software
Accessories/Spare parts
Source:Endress+Hauserpublic information from the website
Case Studies
Municipal Wastewater Treatment — Wastewater Treatment Plant · Tank Farm Application Case
Project Background
Municipal Wastewater Treatment customers at the Wastewater Treatment Plant stage have long faced the challenge of insufficient accuracy in effluent quality monitoring and instruments prone to contamination causing data drift, affecting compliance discharge, placing higher demands on the stability and measurement accuracy of Tank Farm.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Tank Farm for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Municipal Wastewater Treatment conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Food & Beverage — Food Production Line · Tank Farm Application Case
Project Background
Food & Beverage customers at the Food Production Line stage have long faced the challenge of high hygienic measurement requirements, with inline instruments needing to withstand CIP/SIP cleaning while maintaining stable accuracy, placing higher demands on the stability and measurement accuracy of Tank Farm.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Tank Farm for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Food & Beverage conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Chemical & Pharmaceutical — Reactors and Storage Tanks · Tank Farm Application Case
Project Background
Chemical & Pharmaceutical customers at the Reactors and Storage Tanks stage have long faced the challenge of highly corrosive media and complex conditions, requiring corrosion-resistant and explosion-proof instruments, placing higher demands on the stability and measurement accuracy of Tank Farm.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Tank Farm for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Chemical & Pharmaceutical conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Power & Energy — Power Plant Boiler and Turbine · Tank Farm Application Case
Project Background
Power & Energy customers at the Power Plant Boiler and Turbine stage have long faced the challenge of unstable measurement under high temperature and pressure, with high maintenance and downtime costs, placing higher demands on the stability and measurement accuracy of Tank Farm.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Tank Farm for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Power & Energy conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Related Products
Endress+HauserTank Side Monitor NRF590
Endress+HauserProservo NMS5
Endress+HauserMicropilot S FMR530
Endress+HauserTankvision Tank Scanner NXA820
Endress+Hauser伺服罐表 NMS81
Endress+Hauser雷达液位计 NMR81
Endress+Hauser浮子液位计
Endress+Hauser