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Proservo NMS81

Servo Level Gauge · Cargo Level & Temperature Gauging

Class-certified type (DNV register) · technical data sheet not yet verified

The intelligent tank gauge Proservo NMS81 is designed for high accuracy liquid level measurement in custody transfer and inventory control applications with NMi- and PTB-approvals. It meets the relevant requirements according to OIML R85 and API 3.1B. It fulfills the exact demands of tank inventory management and loss control and is optimized in regards of total cost saving and safe operation.

Specifications

Technical data.reference — unverified

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Transmission distance:Maximum 1 200 m (3 900 ft)
Input operating modes:4..20mA input (1 external device)
Output operating modes:4..20mA output
Internal load (to ground):400 Ω
Measuring range:0 to 26 mA
Accuracy:±15 µA (after linearization and calibration)
Output current:3 to 24 mA
Error on alarm:HART error message classified according to NAMUR NE 107
Minimum terminal voltage:10.4 V 2)
Maximum terminal voltage:29 V 2)
Process temperature range–200 to +200 °C (–328 to 392 °F)
Transmitter + process316/316L
Feature070
Material of wire drumSUS316L
Movement Δx of the tank reference height25 mm
RTD typeCu50
PrerequisiteOperating mode (→  127) ≠ Disabled
0 % value-100 000 to 100 000 mm
User entry0 to 5 000 mm
Factory setting0.2 %
Temp. offset-20 to 20 °C
P2 offset-25 to 2.5 bar
P1-2 distance0 to 100 000 mm
P3 position0 to 100 000 mm
P3 offset–2.5 to 2.5 bar
CertificationsSIL2/3-zertifiziert gemäß IEC 61508
Maximale Last500 Ω inklusive Signalleitung
Maximaler Strom aller angeschlossenen Geräte24 mA
Anzahl der GeräteMax. 15 Geräte
Baudrate600 bit/s, 1 200 bit/s, 2 400 bit/s, 4 800 bit/s, 9 600 bit/s, 19 200 bit/s
Maximale Übertragungsdistanz1 200 m (3 900 ft)
Min. Ansprechspannung25 VAC
Prozessdruckbereich0 … 25 bar(2,5 MPa/362 psi)
Gewicht (g)253
Volumen (ml)143
Balancevolumen (ml)70.7
Übertragungsdistanz1 200 m (3 900 ft)
Max. Ansprechspannung250 VAC
HystereseInnerhalb der spezifizierten Genauigkeit (+/- 1 mm (0,039 in)) nach OIML R85 (20
Wiederholbarkeit0,1 mm (0,004 in)
Einfluss der UmgebungstemperaturInnerhalb der spezifizierten Genauigkeit nach OIML R85 (2008)
Standard Auslegung bar MPa psiJIS 10 K 14 bar 1,4 MPa
Produktdichte0,430 … 2,000 g/cm3 (27 … 125 lb/ft3)
Druck> 25 bar (362,5 psi)
Displacer diameter50 mm
Max. Übertragungsdistanz1 200 m (3 900 ft)
Messwertauflösung - Füllstand und Trenn-Schicht≤ 0,1 mm (0,004 in)
Messwertauflösung - Dichte≤ 0,001 g/cm3
Maximale Messabweichung - Füllstand+/-0,4 mm (+/-0,016 in)
Maximale Messabweichung - Schnittstelle+/-2 mm (+/-0,08 in)
Maximale Messabweichung - Tankboden+/-2 mm (+/-0,08 in)
Feuchte<= 95 %
Druckstufe150 lbs
Stromaufnahme bei maximaler Spannung≤ 1 mA (DC)
Part numberNMS81
Manufacturer documentation

Images from manufacturer documentation.

Photos, drawings and page previews from this model’s datasheet or catalog.

4-20mA HART I/O module for serial communication and temperature measurement.

Applications

  • temperature measurement
  • serial communication

Features

  • 4-20mA input
  • HART master
  • 4-20mA output
  • HART slave
  • isolated inputs
  • variable address

Options

  • Temperature adjustment pipe
  • Heat insulating material
Source: Endress+Hauser Proservo NMS81 datasheet, p. 43

Standards

  • IEC 60060-1 / DIN 60079-14
  • TIA-485-A
Source: Endress+Hauser Proservo NMS81 datasheet, p. 31
Endress+Hauser Proservo NMS81 – Drawing (71aab33b38d3_S24-60 S. 24)
Drawing · 71aab33b38d3_S24-60 · S. 24
Endress+Hauser Proservo NMS81 – Drawing (71aab33b38d3_S24-60 S. 25)
Drawing · 71aab33b38d3_S24-60 · S. 25
Endress+Hauser Proservo NMS81 – Drawing (71aab33b38d3_S24-60 S. 26)
Drawing · 71aab33b38d3_S24-60 · S. 26
Endress+Hauser Proservo NMS81 – Page preview (71aab33b38d3_S24-60 S. 27)
Page preview · 71aab33b38d3_S24-60 · S. 27
Endress+Hauser Proservo NMS81 – Page preview (71aab33b38d3_S24-60 S. 28)
Page preview · 71aab33b38d3_S24-60 · S. 28
Endress+Hauser Proservo NMS81 – Page preview (71aab33b38d3_S24-60 S. 29)
Page preview · 71aab33b38d3_S24-60 · S. 29
Endress+Hauser Proservo NMS81 – Page preview (71aab33b38d3_S24-60 S. 30)
Page preview · 71aab33b38d3_S24-60 · S. 30
Source: Endress+Hauser Proservo NMS81 datasheet, p. 24
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