The Magnetic Level Gauge 2000 Series consists in a bypass chamber that, on its inside it has a float, containing a magnet that magnetically transmits the liquid level to a housing mounted outside of the chamber. Inside the housing, red and white flags rotate 180° with the movement of the float showing the red face in presence of liquid and the white face in his absence.
It can work as a Level Transmitter or as a Level Switch mounting the appropriate accessories. The Level Gauge 2000 Series is suitable for harsh process conditions, with corrosive fluids and high temperature and pressure.
How It Works
The 2000 series magnetic level gauge consists of a side chamber containing a float with a magnet that transmits the liquid level magnetically to a housing mounted outside the chamber. Inside the housing, a red and white flag rotates 180° with the float's movement, displaying a red side when liquid is present and a white side when there is no liquid.
Specifications
Type 2000
Body Material
+ Metals SS 316-316L, Hastelloy C-276, Monel 400, Alloy 825, Alloy 625
+ Plastics PVC, Polypropylene, PVDF, ETFE/PTFE
Float Material Based on Density and Corrosion Resistance.
+ Metals SS 316L, Titanium, Hastelloy C-276
+ Plastics PVC, Polypropylene, PVDF, FDA
Gasket Material: Viton, Graphite, PTFE, Spiral Wound, Ring Joint
Bolt Material: Electroplated A193.B7, A193.B7M, A193.B8 in SS 304, A193.B8M in SS 316, A320.L7, A320.L7.
Benefits of our Technology
- Minimum flow density 0.3 kg/dm3 for metallic type and 0.7 kg/dm3 for plastic type.
- Suitable for interface service.
- Accuracy ± 5 mm, Repeatability ± 2 mm.
- Ratings up to PN 400, ANSI 2500.
- Maximum temperature over 400 °C on request.
- Lower temperature over -160 °C on request.
- Maximum length 5 m for metallic type and 4 m for plastic type. Over on request.
- Ambient temperature range -50 °C / +85 °C.
- Metallic type mounts upper and lower shock-absorber mechanism to avoid damages to the float due to rapidly level change.
- Suitable for Full-Vacuum use.
Housing
Aluminium or SS316L and soda lime glass or shatter-proof polycarbonate. Flags in Iron or Ferriric stainless steel on request.
The housing is mounted at 180° from the connections. On request it can be oriented in different positions.
Connections Placements
Different connections are available on request, like for example with three Side connections.
Dimensions B and C are determined by the float dimension and therefore by the fluid’s density. In order to reduce them, the visibility and the housing lenght must be decreased.
Process: Flanged, Threaded, Weld stub
Drain: Flanged, Threaded, Weld stub
Vent: Sealed, Flange, Weld, Lace
The standard flanges avaiable are: ANSI B16.5, EN 1092/1
Threads: NPT-F or NPT-M, GAS-F or GAS-M
Weld stub: SW - socket weld, BW - butt weld
Shut-off:
Ball valves
Globe valves
Gate valves
Drain / Vent:
Ball valves
Needle valves
Globe valves
Gate valves
MODELS AND OPERATING LIMITS
Model 2000T is designed for top-mounted applications in underground tanks.
The float trough a metallic rod moves a magnet on the top of the tank that communicates with the housing. It is also available with stillin-well to protect the float and the rod.
CHA + 2000 VERSION
The Level Gauge 2000 Series can be coupled with a chamber for the external mounting of radar level transmitters. The gauge and the transmitter works independently to add a redundancy level to the level control.
- High reliability and adaptability to different conditions.
- Combination of local indication and continuous measurement in a compact solution.
TOP VIEW
FLASH-PROOF VERSION
With the potential presence of boiling fluids or flash-point vapors it’s available, on request, a large chamber version with float guide to not obstruct the potential bubbles passage, improving the float indication and avoiding float damages.
The asymmetric float position ensure the correct transmission of his magnetic field to the flags and the chamber width ensure the correct operating even in case of solid impurities in the fluid.
ACCESSORIES
TRANSMITTERS TL Series & MD Series
A transmitter can be installed on the outside of the 2000 Series Level Gauge’s chamber, not in contact with the fluid. Due to the float’s radiant magnetic field, the transmitter can be positioned in any position around the body pipe.
The transmitter is available in two versions: the reed chain type TL Series or magnetostrictive type MD Series.
TL Series Reed Chain Transmitter
- Two wires 4-20 mA output
- 10 / 32 V DC power supply for standard version and 28 VDC for Ex i version
- Maximum current 25 mA
- SS316 probe
- Suitable for ambient temperature range from -40 to +85 °C
- Suitable for connection ranges up to 4 m and over on request
- Resolution and accuracy ±10 mm
- Explosion-proof Ex d or intrinsically safe Ex i option
- HART option
- SIL 2 option
- PROFIBUS PA or FOUNDATION FIELDBUS option
The transmitter is available with the following housings:
Standard WP Explosion-proof EP Ex d Die-cast Explosion-proof EP Ex d
painted aluminium painted aluminium SS316
The instrument is usually mounted with the housing on top-right. On request it can be
mounted in any other position.
The transmitter is available with the following electrical connections:
- 1/2” NPT F
- M20 x 1.5 ISO
- 1/2” GAS F
- Double electrical connection option
- Adapter, reductions and cable glands on request
The Transmitter TL Series can be supplied with a local display two wires, 4 digits, 7 segmets, LED or LCD, mounted inside a Die-cast painted aluminium or SS316 housing with a glass window.
MD Series Magnetostrictive Transmitter
As alternative, when higher resolutions are required, the Transmitter can be supplied in the
Magnetostrictive Version MD Series.
In this version, the probe contains a magnetostrictive wire that generates a circular magnetic field. The interaction between the 2000 Series float’s magnetic field and the probe
magnetic field twists the probe’s wire. The electrical part, in the transmitter’s head, uses
this torsion to detect the float position and transform it in a proportional 4-20 mA output.
- Probe material: SS316Ti, option SS316L
- Head material: SS303, option SS316L
- Two wires 4-20 mA output
- Ingress protection IP68
- Electrical connection ISO M20 x 1.5, reduction and adapters on request.
- Intrinsically safe ATEX or IECEx Ex i certificate on request
- 8 - 30 V DC, 10 - 30 V DC for Ex i version
- Suitable for ambient temperature from -40 °C up to 85 °C
- For C to C connections up to 6 m
- Accuracy ± 0.5 mm, Resolution 0.1 mm
- HART signal
The Magnetostrictive Transmitter MD Series can be available with display model, that can be certified ATEX or IECEx Ex d on request.
- Probe material: SS316Ti
- Housing material: SS316
- Ingress protection IP68
- ATEX or IECEx, Ex i or d, certificate on request
- 12 - 50 V DC
- Suitable for ambient temperature from -20 °C up to 85 °C
- Accuracy ± 0.3 mm, Resolution 0.1 mm
- HART signal
REMOTE INDICATOR BAR20WP
The Level Gauge 2000 Series Transmitters (TL Series and MD Series) can be provided with the remote indicator BAR20WP.
The remote display BAR20WP receive the transmitter’s 4-20 mA signal and it shows its percentage value trough n° 20 green/red bicolor LEDs and a 3 digits, 8 segments display.
An additional yellow LED shows the 4-20 mA loop fail status.
The indicator is available with a painted die cast aluminium housing. On request it’s available in explosion-proof Ex d version or in a version without housing, to be mounted on a control panel.
The indicator can be supplied with an additional 4-20 mA output, to be used, for example, to connect a second BAR20WP indicator.
SWITCHES T25 Series
On the 2000 Series Level Gauge can be installed one or more level switches T25 Series: a bi-stable SPDT reed contact.
The switch is mounted with stainless steel brackets on the side of the instrument to provide a low or high level alarm triggered by the float’s magnetic field. Due to the float’s radiant magnetic field, the switches can be positioned in any position around the body pipe.
- Approvals Ex d and Ex i (ATEX, IECeC or EAC Ex), SIL, IP66
- Pneumatic option, model T25PN
- Namur option, model T25NR
- Cable up to 10 m or electrical connection NPT-F or ISO M20x1.5. Reduction and adapters on request
- Fluid temperature up to 350 °C
- Ambient temperature from -50 °C up to +70 °C
- Option esplosionproof version or intrinsically safe version with cable or junction box
- Housing in diecast painted aluminium or stainless steel
HOUSING ACCESSORIES
- Shatter-proof polycarbonate window
- SS 316 version
- Hermetically sealed version in glass or polycarbonate
- Neutral gas flow version for critical applications
- Antifrost version with plexiglas plate for cryogenic applications up to -195 °C
- Flags in ferromagnetic stainless steel
- Broken float indicator: Red/Yellow flags that, in case the float sinks, they will show the yellow face
GRADUATED SCALE
On request on the Level Gauge 2000 Series can be installed a graduated scale in SS 316L in percentage, mm or other unit of measure on request, both of volume (m3, L, etc.) and of length (ft, inch, etc.).
On request, a double graduated scale can be installed with two different units of measure on the two sides of the housing (for example mm and inch).
On the scale can be installed adjustable pointers.
HEAT EXCANGE AND INSULATION
As accessory the Level Indicator 2000 Series can be supplied with:
- Insulation
- Electric tracing
- Tubes steam tracing
- Jacket steam tracing
TESTS AVAILABLE
- Penetrant liquid test
- Hydrostatic test
- RX test on full-penetration welds
- Tests on painting
- PMI test
- Hardness test
- Ferrite test
OTHER ACCESSORIES
- Welded or adjustable brackets to reduce the connection stress in case on high length. In plastic type included in standard version.
- Execution with full-penetration welds.
- Standard Officine Orobiche paintings or compliant to customer specifications.
APPROVALS
On request the following approvals are avilable:
- PED 2014/68 UE
- ATEX Ex II GD c IIC TX, II GD c IIB TX
- EAC CUTR032
- EAC CUTR012
- NACE MR-0175 or MR-0103
For TL Series Transmitter:
ATEX explosion-proof: II 2G Ex db IIC T6 Gb / II 2D Ex tb IIIC T85°C Db
ATEX intrinsically safe: II 1 G Ex ia IIC T4...T6 Ga / II 1 D Ex ia IIIC Da / II 1 M Ex ia I Ma
EAC CUTR012: 1Ex d IIC T6 / Ex tb IIIC T85°C Db
0Ex ia IIC <
IECEx explosion-proof: Ex db IIC T6 Gb / Ex tb IIIC T 85°C Db
IECEx intrinsically safe: Ex ia IIC T4 … T6 Ga / Ex ia IIIC Da / Ex ia I Ma
IEC 61508 SIL 2
For MD Series Transmitter:
Models MX & MX+I
ATEX intrinsically safe: II 1 G Ex ia IIC T6…T1 Ga
II 1/2 G Ex ia IIC T6…T1 Ga/Gb
II 2 G Ex ia IIC T6…T1 Gb
II 2 D Ex ia IIIC TX °C Db
IECEx intrinsically safe Ex i
Model MD+I
ATEX: II 1/2 G Ex ia/db IIC/B T6…T1 Ga/Gb
II 2 G Ex db ia IIC/B T6…T1 Gb
II 2 D Ex ia tb IIC/B TX °C Db
IECEx intrinsically safe Ex i or explosion-proof Ex d
For T25 Series Switches:
IEC 61508 SIL 2
