Proservo NMS81 – Servo Level Gauge for Custody Transfer
The Endress+Hauser Proservo NMS81 is a precision servo-operated level gauge designed for custody transfer applications in oil and gas storage tanks. It provides highly accurate level, interface and density measurements.
Key Features
- Measuring principle: Servo-operated (displacer)
- Accuracy: ±0.4 mm (level)
- Measuring range: up to 40 m
- Simultaneous measurement: level, interface, density profile
- Process temperature: −40 to +200 °C
- Process pressure: up to 6 bar
- Compliance: OIML R85, API Chapter 3.1B
- Communication: Modbus, HART, Enraf BPM, Sakura V1
- Explosion protection: ATEX, IECEx, FM, CSA
Applications
Crude oil storage, refined product terminals, LPG storage, chemical terminals, custody transfer measurement, tax measurement.
Technical Specifications
| Parameter | Value |
|---|---|
| Measuring principle | Servo (displacer) |
| Accuracy | ±0.4 mm |
| Measuring range | Up to 40 m |
| Process temperature | −40 to +200 °C |
| Compliance | OIML R85, API Chapter 3.1B |
| Communication | Modbus, HART, Enraf BPM, Sakura V1 |




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