SITRANS LG series Siemens
Область применения
The SITRANS LG series comes in four different models, depending on the applications, level of performance, and functionality required:
- SITRANS LG240 offers configuration options for your hygienic and corrosive application requirements
- SITRANS LG250 Highly flexible solution for liquid level and interface applications. Extremely versatile offering solutions for storage, separation of materials or difficult ammonia applications
- SITRANS LG260 Ideal for measuring level in medium range solids applications including; grains, plastics, and cement
- SITRANS LG270 offers configuration options for extreme conditions including high temperature and high pressure applications such as: harsh applications found in chemical, HPI and energy industries for example, LPG gas tanks, steam boilers and distillation columns
Обзор
The Siemens SITRANS LG series are guided wave radar transmitters for level, level/interface, and volume measurement of liquids and solids. The Sitrans LG product line can handle changes in process conditions, high temperatures and pressures, and steam.
Характеристика
SITRANS LG240, Ambient temperature/process temperature curve
SITRANS LG250, Ambient temperature/process temperature curves
SITRANS LG260, Maximun tensile load curves
SITRANS LG260, Ambient temperature/process temperature curves
SITRANS LG260, Ambient temperature/process temperature curves
SITRANS LG270, Ambient temperature/process temperature curves
SITRANS LG270, Process pressure/process temperature curve
Конфигурация
SITRANS LG Series installation
Чертеж
SITRANS LG series, dimensions in mm (inch)
SITRANS LG240, dimensions in mm (inch)
SITRANS LG250, dimensions in mm (inch)
SITRANS LG250, dimensions in mm (inch)
SITRANS LG260, dimensions in mm (inch)
SITRANS LG270, dimensions in mm (inch)
SITRANS LG270, dimensions in mm (inch)
Особенности
- High accuracy to +/- 2 mm
- Advanced Diagnostics available for high degree of safety
- Simple menu driven display offers ease of setup
- Large range of options offers reliability in most continuous measurement applications
- Ease of maintenance through module design and field replaceable and adjustable probe options
- Perfect solution for wide range of applications from storage to interface with options for extreme pressure and temperature conditions
- Universally applicable in liquids, interface, slurries and solids
- Highly immune to build-up using auto learn function
- Wide range of Hygienic options
Схема подключения
SITRANS LG series, connections
SITRANS LG series, connections
SITRANS LG series, connections
SITRANS LG series, connection
LG series, connection
LG series, connection
Технические данные
Mode of operation | |
|---|---|
Measuring principle | Guided wave radar measurement |
Measuring range | 300 ... 75 000 mm (11.81 ... 2 952.75 inch) |
Output | |
mA analog output with HART digital signal | 4 ... 20 mA/HART (SIL optional) |
Output range | |
| Current: minimum 3.8 mA, maximum 20.5 mA |
| ≤ 10 mA for 5 ms after switching on, ≤ 3.6 mA |
Diagnostic alarm | Failure signal current output (adjustable): last valid measured value, ≥ 21 mA, ≤ 3.6 mA |
Digital communication | HART Version 7 x and multidrop compatible |
Modbus | Modbus RTU, Modbus ASCII |
PROFIBUS PA | |
Performance | Process reference conditions according to DIN EN 61298-1 |
Non-linearity | |
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| See manual for more details |
Resolution and repeatability | Accuracy +/- 2 mm (0.08 inch) |
Accuracy | |
| +/- 2 mm (0.08 inch) |
| +/- 5 mm (0.197 inch) (Note: Typical deviation, Interface measurement) See manual for more details |
Electromagnetic compatibility (check if needed) | |
| < 500 ms |
| ≤ 3 s |
| The measurement error from the process conditions is in the specified pressure and temperature range of below 1 % |
Rated operating conditions | |
Ambient temperature for enclosure | -40 ... +80 °C (-40 ... +176 °F) |
LCD readable temperature range | -40 ... +80 °C (-40 ... +176 °F) with display heated option |
Location | Indoor/outdoor |
Installation category | II |
Pollution degree | 2 |
Relative Humidity | 20 ... 85 % |
Medium conditions | |
Dielectric constant | dK ≥ 1.4 (configuration dependent) |
Note: for measurement below 1.4 use probe end tracking. | |
Process temperature range | -196 ... +450 °C (-321 ... +842 °F) |
Vessel pressure | -1 … +400 bar (-100 … +40 000 kPa) |
Design | |
Instrument weight (dependent on process fitting) - see manual for further details | Approx. 0.8 ... 8 kg (0.176 ... 17.64 lb) |
Materials | |
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| 2x M20x1.5 or 2 x ½" NPT |
Process connections | |
| G¾" A, G1" A, G1½" A according to DIN 3852-A |
| ¾" NPT, 1" NPT, 1½" NPT |
| DIN from DN 25, ANSI from 1" |
| Hygienic fittings |
Programming | |
Local | Four button, menu-driven data entry |
Handheld communicator | Hart communicator |
PC | SIMATIC PDM, AMS, PACTware |
Power | |
2 wire Hart version | 9.6 ... 35 V DC |
4 wire versions | 9.6 … 48 V DC, 20 … 42 V AC, 50/60 Hz and 90 … 253 V AC, 50/60 Hz |
Modbus | 8 … 30 V DC |
PROFIBUS PA | 9 ... 32 V DC |
Note: see manual for specific power based on ordered options | |
Certificates and approvals | |
Hazardous approvals: | ATEX, FM, CSA, IECex |
Hygienic approvals: | EHEDG |
Overfill protection | WHG |
Ship approval | ABS, CCS, GL, DNV |
SITRANS LG240 | SITRANS LG250 | SITRANS LG260 | SITRANS LG270 | |
|---|---|---|---|---|
Industries | Food, Beverage and Pharmaceutical | Chemical/HPI/Power/General | Cement, power generation, food, processing, mineral processing, mining | Chemical/HPI/Power/General |
Applications | Hygienic and corrosive applications | Liquids, storage and process vessels with agitators, vaporous liquids, interface | Cement, fly ash, grain, coal, flour, plastics | Aggressive applications in Liquids, storage and process vessels with agitators, vaporous liquids, high temperatures and pressures, low dielectric media |
Range | 32 m | 75 m | 60 m | 60 m |
Performance | +/- 2 mm | +/- 2 mm | +/- 2 mm | +/- 2 mm |
Temperature | -40 … +150 °C (-40 ... +302 °F) | -40 … +200 °C (-40 ... +392 °F) | -40 … +200 °C (-40 ... +392 °F) | -196 … +450 °C (-320.8 ... +842 °F) |
Communications |
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Ответ от производителя может занять до 5 дней и более.
