E+H Proservo NRF81 High-Precision Liquid Level Gauging Instrument 1-Year Warranty White Level Measuring Instruments
Brand Name:E+H
Model Number:NRF81
Minimum Order Quantity:1 pc
Place of Origin:China
Price:USD 500
Supply Ability:100 pc
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Product Details
What is NRF81?
- The NRF81 Tankside Monitor (sometimes called Tankside Monitor NRF81 or simply “NRF81”) is a field device / gateway used in tank gauging systems, especially for bulk storage tanks (e.g. in terminals, refineries, tank farms).
- Its role is to integrate, monitor, and relay data from various sensors on a tank (level, temperature, pressure, etc.) to higher-level inventory or control systems.
- It is commonly used in custody transfer or inventory control applications (i.e. measuring and accounting for the volume/mass of fluid in the tank).
Key Functions & Capabilities
Here are some of the main functions and features of NRF81:
Feature | Description |
Sensor integration | Can connect to radar gauge, temperature probes, pressure transmitters, etc. |
Tank calculations / corrections | Performs volume, density, or level corrections (e.g. to account for temperature or tank deformations) |
Alarm outputs / relays | Has multiple SIL-rated relay outputs for alarms or safety functions |
Communication interfaces | Supports several protocols: Modbus RS-485, V1, HART, analog 4–20 mA outputs, etc. |
Safety & approvals | Designed for use in hazardous areas, with explosion protection and compliance with safety standards (e.g. SIL2 / SIL3) |
Enclosure & robustness | Rugged enclosures (e.g. IP66 / IP68, NEMA 4X / 6P) to handle harsh conditions |
User interface & display | Has local display (LCD) and touch control (in safe version) to show measured/calculated values on site. |
Technical / Performance Highlights
- Supports SIL2 (and in some redundant/homogeneous setups, SIL3) safety levels.
- Up to 6 relay outputs for alarms and safety functions.
- Wide range of output options: analog, HART, digital (Modbus, V1).
- Operating / ambient temperature range: typically –40 °C to +60 °C
- Power supply: AC 85–264 V (often)
- Intrinsically safe (i.s.) power/communications to connected field sensors in hazardous zones.
E+H Proservo NRF81 High-Precision Liquid Level Gauging Instrument 1-Year Warranty White Level Measuring Instruments
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