
Specs at a glance
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Accuracy
up to 0.4 mm
-
Process temperature
-200°C...200°C
(-328°F...392°F) -
Process pressure / max. overpressure limit
6 bar abs
-
Max. measurement distance
22 m (72 ft)
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Main wetted parts
316L, AlloyC276, PTFE
Field of application
The intelligent tank gauge Proservo NMS83 is designed for high accuracy liquid level measurement in custody transfer and inventory control applications with NMi- and PTB-approvals. It meets all requirements for hygienic applications. It fulfills the exact demands of tank inventory management and loss control and is optimized in regards of total cost saving and safe operation.
For high accuracy custody transfer measurement in beer, whiskey, wine and sake.
Process connections: Flanges
Temperature: -200 to +200°C (-328 to +392°F)
Pressure: 0 to +6bar (0 to +87psi)
Maximum measuring range: 22m (72ft)
Accuracy: ±0.4mm (±0.02")
International explosion protection and custody transfer certificates, overfill prevention WHG, SIL
Benefits
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Hardware and software developed according to IEC 61508 up to SIL3 (in homogeneous redundancy) for high level of safety
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Maximum reliability through accuracy up to ±0.4mm (± 0.02")
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Developed according to international metrology recommendations such as OIML R85 and API MPMS
Local and country-specific certifications like NMi or PTB for custody transfer applications
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Simplified installation and trouble-free operations due to easy connection to major DCS systems via open protocols
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Measurement of interfaces between up to three liquid layers, tank bottom, spot, and profile densities
Videos
Xpert selection
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
Predecessor
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Measuring principle
Servo / Float Tank Gauging
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Characteristic / Application
Servo Tank Gauging: High precision measurement for liquid level,
interface, spot density and density profile for hygienic applications -
Specialities
Custody transfer level measurement
Interface measurement
Spot density, density profile measurement -
Supply / Communication
85-264VAC
52-74VAC
19-64VDC -
Accuracy
up to 0.4 mm
-
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
-200°C...200°C
(-328°F...392°F) -
Process pressure / max. overpressure limit
6 bar abs
-
Main wetted parts
316L, AlloyC276, PTFE
-
Process connection
Flange:
DN80/3" / DN150/6" -
Max. measurement distance
22 m (72 ft)
-
Communication
Outputs:
Fieldbus: Modbus RS485, V1, WM550
HART, BPM and TRL/2 (via GE option)
Analog 4-20mA output (Exi/ Exd)
Relay output (Exd)
Inputs:
Analog 4-20mA input (Exi/ Exd)
2-, 3-, 4-wire RTD input
Discrete input (Exd, passive/ active) -
Certificates / Approvals
ATEX, FM, IEC Ex, EAC, JPN Ex, KC Ex,
INMETRO, NEPSI, UK Ex -
Safety approvals
Overfill protection WHG
SIL -
Design approvals
EN 10204-3.1
NACE MR0175, MR0103 -
Metrological approvals and certificates
OIML, NMi, PTB
-
Options
Redundant fieldbus
Weather protection cover
CIP (Cleaning in Place)
Relief valve
Gas purging nozzle connection
Pressure gauge
Cleaning nozzle connection -
Application limits
Stilling well or guide wires for turbulent
application
Recommend PTFE displacer for high
viscosity application
Interface measurement requires min. difference of 0.100 g/ml
between layers
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Measuring principle
Servo / Float Tank Gauging
-
Characteristic / Application
Servo Tank Gauging: High precision measurement for liquid level,
interface, spot density and density profile for hygienic applications -
Supply / Communication
85-264VAC
-
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
-200°C...200°C
(-328°F...392°F) -
Process pressure
6 bar abs
-
Wetted parts
316L, AlloyC276, PTFE
-
Output
Outputs:
Fieldbus: Modbus RS485, V1, HART
Analog 4-20mA output (Exi/ Exd)
Relay output (Exd)
Inputs:
Analog 4-20mA input (Exi/ Exd)
2-, 3-, 4-wire RTD input
Discrete input (Exd, passive/ active) -
Certificates / Approvals
ATEX, FM, IEC Ex, NEPSI, EAC
-
Options
Redundant fieldbus
Weather protection cover
CIP (Cleaning in Place)
Relief valve
Gas purging nozzle connection
Pressure gauge
Cleaning nozzle connection -
Specialities
Custody transfer level measurement
Interface measurement
Spot density, density profile measurement -
Measuring range
22 m (72 ft)
-
Other approvals and certificates
EN 10204-3.1
NACE MR0175, MR0103
OIML, NMi, PTB
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Measuring wire,PFA>316L,0.4mm dia.16m
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Meas. wire/tape
Drawing numberOrder code8671659149 -
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Terminal set, I/O module, Push-in, TG
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Terminals
Drawing numberOrder code3771324756 -
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