SITRANS FX330
SITRANS FVA 250
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SITRANS LT500 mA HART version
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SITRANS LT500 is a level monitoring and control device for single or multiple points. It supports ultrasonic and mA input sensors with advanced control functions, ideal for tanks, solids, open channels, reservoirs, and complex level applications.
Key Features
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User-friendly HMI with 4-button programming, intuitive menu navigation, and application-specific wizards
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Multi-language support: English, German, French, Spanish, Chinese, Italian, Portuguese, Japanese, Danish, Dutch, Swedish, Finnish, Polish, Russian, and Korean
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Removable terminal blocks for easy wiring and maintenance
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Digital input for level override from point level devices
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Supports digital communication protocols: HART, Modbus RTU, PROFIBUS PA/DP, PROFINET
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Supports single or dual level monitoring with one controller
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Auto False-Echo Suppression for automatic filtering of fixed obstructions
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Up to 6 independent relays for pump control, alarms, or remote totalization
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Measurement capabilities: level, volume, open channel flow, pump control, differential level, and overflow alarm
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Multiple mounting options: wall mount, panel mount, or remote panel
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Remote configuration via SIMATIC PDM or SITRANS DTM over USB interface
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MCERTS certified for open channel flow measurement
Typical Applications
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Monitoring and control of storage tanks, wells, and wastewater sumps
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Open channel flow measurement in flumes and weirs
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Pump control for energy-efficient operation and schedule management
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Use in chemical storage, liquids, bulk solids, crusher pits, and silos
Compatibility and Flexibility
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The SITRANS LT500 mA HART version is compatible with sensors such as SITRANS LR110, LR120, Probe LU240, or any 4–20 mA device
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The ultrasonic version supports EchoMax sensors or legacy ultrasonic transducers
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Available in wall mount, panel mount, or remote panel options
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Designed for fast commissioning and scalable control and communication
| Category | Specification |
| Mode of operation | Level, space, distance, volume, flow, head, difference, average, totalization |
| Sensor input, mA HART version | |
| Number of inputs | 1 or 2 |
| Terminal voltage | Max. 26 V, Min. 18 V (0 … 22.6 mA) |
| Wiring | 2 conductor, twisted, shielded, 0.5 … 0.75 mm² (22 … 18 AWG) |
| Max. cable length | 500 m (1,640.42 ft) |
| Sensor input communication | • 4 … 20 mA • HART protocol, for supported sensors: SITRANS LR110, LR120, SITRANS Probe LU240 |
| 4 … 20 mA sensor input | |
| • Resolution | 0.025 % of full scale |
| • Accuracy | 0.1 % of full scale |
| HART sensor input | Resolution, range, and accuracy are dependent on connected sensor |
| Digital input | |
| Quantity | 2 |
| Switching threshold, low | 0 … 0.5 V DC |
| Switching threshold, high | 10 … 50 V DC |
| Input current | Max. 3 mA |
| Bias voltage | 24 V |
| Analog output | |
| Quantity | 1 or 2 |
| Range | 0 … 20 mA or 4 … 20 mA isolated |
| Max. load | 750 W |
| Resolution | 0.1 % of range |
| Accuracy | ±20 µA |
| Startup current | 3.6 mA |
| Fail-safe | Programmable as high, low, last reliable, set value, or hold per NAMUR NE43 |
| Wiring | 2 conductor, twisted, shielded, 0.5 … 0.75 mm² (22 … 18 AWG) |
| Relay output | |
| Quantity | Up to 6, 4 form A and 2 form C |
| Rating | 5 A at 250 V AC, 5 A at 30 V DC, non-inductive |
| Durability | 50,000 operations min. per relay (5 A at 30 V DC, resistive load) |
| Fail-safe | Programmable as energized, de-energized, or hold |
| Wiring | Copper conductors per local requirements to meet 250 V 5 A contact rating |
| Rated operating conditions | |
| Installation conditions | |
| • Location | Indoor/outdoor |
| • Installation category | II |
| • Pollution degree | 4 |
| Ambient conditions | |
| • Ambient temperature | -20 … +50 °C (–4 … +122 °F) |
| • Storage temperature | -20 … +50 °C (–4 … +122 °F) |
| • Altitude | 2,000 m (6,565 ft) maximum |
| • Vibration resistance | 0.5 g at frequencies from 10 Hz to 100 Hz |
| • Bump/shock resistance | 25 g |
| Design | |
| • Wall mount | 1.22 kg (2.68 lb) |
| • Panel mount | 1.35 kg (2.97 lb) |
| • Remote panel mount | 1.73 kg (3.80 lb) |
| Enclosure | |
| • Material | Polycarbonate |
| • Degree of protection | |
| — Wall mount | IP65/Type 4X |
| — Panel mount | IP54/Type 3 |
| — Remote panel mount | IP65/Type 3 (front panel), IP20 (enclosure) |
| Display and control | |
| LCD display | 60 × 40 mm (2.36 × 1.57 inch) LCD, 240 × 160 pixels resolution |
| Menu navigation | 4 push button keys |
| Update time | 1 second or less |
| Memory | Program and parameters stored in non-volatile Flash memory |
| Real-time clock memory retention | 48 hours |
| CPU speed | 96 MHz |
| Memory card | 8 GB Industrial micro SD |
| Power supply | |
| AC version | 100 … 230 V AC, ±15 %, 50/60 Hz, 36 VA (17 W) |
| DC version | 12 … 30 V DC (20 W) |
| Certificates and approvals | • CE, UKCA, RCM, EAC, FM, cCSAus, cULus • cCSAus Class I, Div. 2, Group A, B, C and D; Class II, Div 2, Group F & G; Class III • Mcerts |
| Communication | |
| Service interface | USB 2.0 mini A cable |
| Optional Fieldbus | • HART 7, with Active/Passive 4 … 20 mA • Modbus RTU • PROFIBUS PA per profile 4.01 • PROFIBUS DP • PROFINET |
| Remote configuration via service interface | • EDD via SIMATIC PDM • SITRANS DTM via PACTware |
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