• SITRANS LT500

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Siemens SITRANS LT500 – Level, Flow and Pump Controller

The Siemens SITRANS LT500 is a level, flow and pump controller for industrial applications. It takes signals from radar and ultrasonic transmitters or any 2-wire 4-20 mA device, then controls pumps, triggers alarms and logs process data. It suits everything from basic level measurement to complex pumping routines, and has 6 fully programmable relays.

Why SITRANS LT500

- Fast setup: Quick Start Wizards, multiple display views and flexible configuration tools. Six fully programmable relays simplify pump control and alarm setup.

- Many measurement types: level, distance, space, volume, differential, average, head and Open Channel Flow.

- Flexible sensor choice: works with SITRANS LR110/LR120 radar, SITRANS Probe LU240, ultrasonic transducers or mA inputs.

- Lower maintenance and energy cost: schedule pumps before high-demand periods, with grease ring reduction, pump runtime and alternating pumps functions that reduce maintenance.

- Safer operation: less need to access vessel tops or confined spaces, plus high-level alarms and backup level override to help prevent overflow, with push-button configuration at the controller.

- Connected and data-ready: onboard datalogging for events, totalizers and pumps, parameter backup and configuration transfer, and connection to the cloud, IIoT or networks using standard industry protocols.

Compatible sensors and option cards

- Sensors: SITRANS LR110/LR120 (radar), SITRANS Probe LU240 (ultrasonic), ultrasonic transducers, and any 2-wire 4-20 mA device

- Outputs: 2 x 4-20 mA plus 1 more with the HART card, 6 relays and fieldbus

- Fieldbus option cards: EtherNet/IP, HART, Modbus RTU, Modbus TCP, PROFIBUS DP, PROFIBUS PA, PROFINET

- Display languages: more than 20 to choose from

Typical applications

- Clarifier sludge monitoring in wastewater plants, replacing manual checks

- Pump stations and wetwells, with pump control and alternation based on level

- Water and irrigation systems, with pump control and water-level monitoring

- Crushers and quarries, triggering shaker screens based on material height

Frequently asked questions

1. How much does the SITRANS LT500 cost?

Price depends on the option cards and the sensors used with it. Send your application details (number of pumps, sensor type, communication needed) via LINE @gotcorp to request a quotation from the GOT team.

2. How is the LT500 different from a level transmitter such as the LR100 or LR500?

A level transmitter is the measuring device. The LT500 is a controller that takes the signal from a transmitter, then runs pumps, triggers alarms and logs data. It does not measure by itself, so it is used together with a sensor.

3. Which sensors can it work with?

SITRANS LR110/LR120 radar, SITRANS Probe LU240, ultrasonic transducers, and any 2-wire 4-20 mA device.

4. How does it control pumps? How many relays does it have?

It has 6 fully programmable relays for pumps and alarms, with alternating pumps, pump runtime and grease ring reduction functions. The maximum number of pumps per unit depends on the control scheme, so check the manual or ask a GOT engineer.

5. Can it connect to a PLC or SCADA?

Yes, with optional fieldbus cards: EtherNet/IP, HART, Modbus RTU, Modbus TCP, PROFIBUS DP, PROFIBUS PA or PROFINET. Choose the one that matches your plant system.

6. Can it measure open channel flow?

Yes. The LT500 supports Open Channel Flow measurement and needs a suitable sensor for the application. Send your site details to a GOT engineer to help select the set of equipment.

7. How does it help save energy and reduce pump maintenance?

You can schedule pumps before high-demand periods, use alternating pumps and pump runtime to spread the load, and use grease ring reduction. Actual results depend on each plant's system.

8. How does it help prevent overflow?

High-level alarms and backup level override help prevent overflow, and it reduces the need to access vessel tops or confined spaces.

9. Is it difficult to set up?

No. Use the Quick Start Wizards and push-button configuration at the controller, with more than 20 display languages. GOT engineers can advise on installation and setup.

10. What is the warranty, and is it in stock?

[Confirm with GOT: warranty period, stock in Thailand, delivery time.] Contact the team via LINE @gotcorp to check stock and delivery.

Free advice from GOT engineers: send your application details (number of pumps, sensor type, communication needed) via LINE @gotcorp, or request a quotation right away.