The modular rod sensor P45-GD for pipes and tanks is available in various rod lengths and can be used up to 75 bar. Retractable fittings are optional.
Water content determination Litronic-WMS II
Water cut meter / Analyzer
Liebherr sensors in use in explosive areas
The Liebherr Litronic-WMS II water content meter is used to measure the moisture or water content of a wide range of water content of a wide variety of media and materials in refineries, on oil platforms, in pipelines, in tanks, in many applications in the chemical and petrochemical industry, sludge dewatering, drying, waste incineration and sewage treatment plants. Also in the agricultural sector up to the pharmaceutical industry and many other industries.
The wide range of applications extends from the most diverse emulsions to the finest powders and dusts and coarse-grained materials (max. grain size 32 mm) such as
- Oil, crude oil, diesel, biodiesel, hardening oil (upstream / downstream)
- Coolants
- Paints, lacquers, solvents
- Wax, resin
- Other emulsions, suspensions
- Water-product separation
- Dust, slag
- Fertiliser
- Washing powder, agent
- Sawdust
- Biomass
- Flour
- etc.
Applications:
- Water cut meter
- Pipeline, tanks BS&W (Basic sediment and water) measurement
- Petroleum purification/desalination
- Automatic well testing
- LACT units
- Separation control
The self-sufficient measuring device for precise water content/moisture determination in the running process guarantees the highest quality and safety in EX-protected production environments, the further processing and refinement of very many emulsions and bulk materials.
The PC software enables fast and accurate calibration of the measured sections.
Liebherr offers sensors for the following device protection categories:
Certificates
ATEX / UKEX:
EU-type examination certificate number: EPS 21 ATEX 1 140 X / EPS 22 UKEX 1 159 X
DIN EN IEC 60079-0:2018, EN 60079-1:2014, EN 60079-11:2012, EN 60079-26:2015, EN 60079-31:2014
Gas EX-protection:
II 1/2 G Ex db/ia IIC T4 Ga/Gb
Dust EX-protection:
II 1/2 D Ex tb/ia IIIC T135°C Da/Db
IECEx:
Certificate number: IECEx EPS 21.0047X
IEC 60079-0:2017 Edition: 7.0, IEC 60079-1:2014-06 Edition: 7.0,
IEC 60079-11:2011 Edition: 6.0, IEC 60079-26:2014-10 Edition: 3.0,
IEC 60079-31:2013 Edition: 2
Gas EX-protection:
Ex db/ia IIC T4 Ga/Gb
Dust EX-protection:
Ex tb/ia IIIC T135°C Da/Db
The WMS II sensors are permitted for the following markets:
In addition to their high precision and robustness, the measuring devices from Bad Schussenried are characterised by their reproducibility.
Once the system has been calibrated, further measuring points can be set up or devices renewed on this basis at any time without great effort. The plant thus always remains reliable, regardless of its previous term and age.
Water Cut Meter Analyzer- Litronic-WMS II
| Suitable for use in potentially explosive areas | Dust/Gas - Zone 0/20 |
| Measurement | |
| Physical principle | Capacity determination in the high frequency stray field |
| Adjustable measuring range | 0 - 100 % moisture content (measuring window adjustable) |
| Update cycle | 65 ms |
| Temperature measurement accuracy | ± 0.5 °C |
| Outflow | |
| Measured value transmission - Sensor display content | Current loop with “4 - 20 mA” for external display (option) |
| Measured value transmission - sensor PLC or main computer | Analogue: “4 - 20 mA” active at 500 Ohm digital: Hart Modem |
| Valid measurement | 3.75 mA to 21.6 mA (NAMUR) |
| Interface signal resolution | 16 bit |
| Max. length of connecting cable | 1000 m (depending on cable) |
| Power supply | |
| Connection | Un = 12 V DC (SELV/PELV) |
| Temperature | |
| Medium temperature | -5 °C* to 80 °C |
| Ambient temperature sensor head | 5 °C to 80 °C |
| Ambient temperature transmitter head | 5 °C to 70 °C |
| Storage temperature | -25 °C to 80 °C |
| * Under certain conditions | |
| Pressure | |
| Pressure | -1 bar up to 75 bar |
| Material | |
| Housing / rod material | 1.4571 (AISI 316TI) Optional: 2.4819, Hastelloy®C-276, Alloy C-276 |
| Transmitter head material | Die-cast aluminium, copper content of max. 0,1 % |
| Measuring field material/wearing protection | PEEK |
| Dimensions | |
| Housing W/H/D | 88 mm 160 mm 143 mm |
| Rod diameter | 45 mm |
| Rod length | 6" to 32" (further lengths on request) |
| Measuring field material | PEEK |
| Measuring field position | Front or side |
| Suitable for use in potentially explosive areas | Dust/Gas - Zone 0/20 |
| Measurement | |
| Physical principle | Capacity determination in the high frequency stray field |
| Adjustable measuring range | 0 - 100 % moisture content (measuring window adjustable) |
| Update cycle | 65 ms |
| Temperature measurement accuracy | ± 0.5 °C |
| Outflow | |
| Measured value transmission - Sensor display content | Current loop with 4 - 20 mA for external display (option) |
| Measured value transmission - sensor PLC or main computer | Analogue: 4 - 20 mA active at 500 Ohm digital: Hart Modem |
| Valid measurement | 3.75 mA to 21.6 mA (NAMUR) |
| Interface signal resolution | 16 bit |
| Max. length of connecting cable | 1000 m (depending on cable) |
| Power supply | |
| Connection | Un = 12 V DC (SELV/PELV) |
| Temperature | |
| Medium temperature | -5 °C* to 80 °C |
| Ambient temperature sensor head | 5 °C to 80 °C |
| Ambient temperature transmitter head | 5 °C to 70 °C |
| Storage temperature | -25 °C to 80 °C |
| * Under certain conditions | |
| Pressure | |
| Pressure | -1 bar to 75 bar |
| Material | |
| Housing material | 1.4571 (AISI 316TI) Optional: 2.4819, Hastelloy®C-276, Alloy C-276 |
| Measuring field material/wearing protection | PEEK |
| Dimensions | |
| Sensor W/H | 45 mm 112.6 mm |
| Housing transmitter head | 88 mm / 160 mm / 143 mm |
| Cable length between sensor and transmitter head | 10 m |
| Suitable for use in potentially explosive areas | Dust/Gas - Zone 0/20 |
| Measurement | |
| Physical principle | Capacity determination in the high frequency stray field |
| Adjustable measuring range | 0 - 100 % moisture content (measuring window adjustable) |
| Temperature measurement accuracy | ± 0.5 °C |
| Outflow | |
| Measured value transmission - Sensor display content | Current loop with 4 - 20 mA for external display (option) |
| Measured value transmission - sensor PLC or main computer | Analogue: 4 - 20 mA active at 500 Ohm digital: Hart Modem, Modbus RTU |
| Valid measurement | 3.75 mA to 21.6 mA (NAMUR) |
| Interface signal resolution | 16 bit |
| Max. length of connecting cable | 1000 m (depending on cable) |
| Power supply | |
| Connection | Un = 12 V DC (SELV/PELV) |
| Temperature | |
| Medium temperature | -5 °C* to 80 °C |
| Ambient temperature sensor head | 5 °C to 80 °C |
| Ambient temperature transmitter head | 5 °C to 70 °C |
| Storage temperature | -25 °C to 80 °C |
| * Under certain conditions | |
| Pressure | |
| Pressure | Flange for bolting on: -1 bar to 1 bar Flange for welding on: -1 bar to 16 bar |
| Material | |
| Housing material | 1.4571 (AISI 316TI) Optional: 2.4819, Hastelloy®C-276, Alloy C-276 |
| Measuring field material/wearing protection | Ceramic, Al2O3ZrO2 |
| Dimensions | |
| Sensor | 78 mm |
| Housing transmitter head W/H/D | 88 mm 160 mm 143 mm |
| Cable length between sensor and transmitter head | 10 m |
- Indirect measuring method: Capacity determination in the high frequency stray field. This method uses the different dielectric constant (permittivity) of water and different materials (solids and liquids)
- Fully reproducible sensors: If the plant is subsequently extended with sensors or if sensors are replaced, no recalibration is necessary thanks to the built-in microprocessor.
- Process control and regulation: Thanks to extensive interfaces, the water content measurement can be integrated into process control systems and controls.
- Cost saving: Time-consuming and costly laboratory analyses are no longer necessary or can be reduced.
- Temperature measurement/temperature compensation: The sensor can also be used to determine the temperature of the medium.
- Limit values: Maximum or minimum limits can be set using the software. Light or sound signals can be triggered if required.
- Mean value calculator: The sensor passes on already averaged values to the evaluation and transfer module.
- Compressive strength: The rod sensor withstands process pressures of up to 75 bar.
- Sliding fitting: For cleaning, flushing or sensor replacement, the sliding fitting can be easily pulled out of the pipeline even under these circumstances without disturbing the process.
- Flange: Use the flange to connect the sensor to the pipeline, tank system or bulk solid receptacle
- Sliding fitting: With the sliding fitting you can mount the sensor on tank systems (rod sensor) and pipelines. The sliding fitting allows the sensor to be changed quickly without having to empty and depressurise the tank or the pipe.
- External display and control unit: The display and control unit is mounted up to 50 m away from the sensor in an easily accessible position. It is connected directly to the electronics of the sensor and powered by it.
- Software: for start-up and configuration.
