Varec NMS80 Proservo Tank Gauge

The NMS80 Proservo Tank Gauge (PTG) is an intelligent tank gauge for high accuracy liquid level measurement and is suited for both custody transfer and inventory management applications employing the latest microprocessor technology.

Specifications

Accuracy

+/-0.4 mm for (+/- 0.015 in)
(Under reference condition, according to OIML R85)

 

 

Interface Level

+/-2 mm (+/-0.08)
(Difference of product densities 0.100 g/cm3 (6.25lb/ft3))

Net Weight

15 kg (33.1 lb)

Standard Range

28m with 316L measuring wire

Spot and Profile Density

+/-0.003 g/cm3 (Under reference condition, according to OIML R85)

Medium Density

0.430 to 2.000 g/cm3 (27 to 125 lb/ft3)

Medium Density Difference

0.1 g/cm3 (6.24 lb/ft3)

Viscosity

0 to 5 000 mPa s

Enclosure Materials

Electrical compartment: aluminium
Drum chamber: aluminium
Rated IP66/68, NEMA Type 4x/6P enclosure

Wire Protection

PTFE coated St/St 316L, 0.4mm (max 16m)

Pressure Rating

Suitable for atmospheric and high pressure applications up to 6 bar/0.6 MPa/87 psi

Power Requirements

High voltage type: 85 to 264 VAC, 50/ 60
Hz, 28.8 VA
Low voltage type: In preparation

Safe Electrical Isolation

Bus inputs are electrically isolated from the other electronics

Operating (liquid) Temperature

-200 to +200°C (-328 to 392°F)

Ambient Temperature

Device: -40 to +60°C (-40 to +140°F)
Display Module: -20 to +70°C (-4 to +158°F)

Display (LCD)

Four line, white background lighting, switches to red for device errors
Language selection: English, German, Japanese

Programming

Local display; operation via the local display is possible without opening the device
Configuration software (e.g. DeviceCare); connected via:
– HART
– Service port (CDI) with optional Commubox FXA291

HART Ex ia/IS Active Input

The HART Ex ia/IS active input is available by default. It needs not to be chosen
explicitly when ordering a device.

Approvals

ATEX, FM, IEC Ex, NEPSI

Metrological approvals and certificates – OIML, NMi, PTB

Options

Flange Type

ASME or DIN. Refer to order code for full selection

Wire Material and Ranges

28 m (93.33 ft), 36 m (120 ft): 316L
16 m (53.33 ft): PFA > 316L
22 m (73.33 ft): AlloyC276

Displacer Diameter

30…50mm (dependent on application), optional 70…110mm

 

Displacer Material

Stainless steel 316L, AlloyC, or PTFE

Measuring Range, Wire MaterialCable Entry

NPT, Metric, BSP (G) class threads

Primary Outputs

MODBUS RS485
V1
4-20mA HART Ex d/XP
+ 4-20mA HART Ex i/IS

Secondary I/O Analog

1 x “Ex d/XP 4-20mA HART + RTD input”
2 x “Ex d/XP 4-20mA HART + RTD input”
1 x “Ex i/IS 4-20mA HART+ RTD input”
2 x “Ex i/IS 4-20mA HART+ RTD input”
1 x “Ex i/IS 4-20mA HART + RTD input”
1 x “Ex d/XP 4-20mA HART + RTD input”
None

Secondary I/O Exd

1 x “2x relay + 2x discrete I/O”
2 x “2x relay + 2x discrete I/O”
3 x “2x relay + 2x discrete I/O”
1x “Modbus RS485”
1x “Modbus RS485”, 1 x “2x relay + 2x
discrete I/O”
1x “Modbus RS485”, 2 x “2x relay + 2x
discrete I/O”
None

Proservo Tank Gauge