Siemens SITRANS LT500 Level Monitor and Controller

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Single- and multi-vessel level monitor and controller in a polycarbonate enclosure. Can be used with any level device that generates a mA output signal, including Siemens SITRANS LR110 and LR120 radar level transmitters, SITRANS Probe LU240 ultrasonic level transmitter. One or two sensor inputs, two discrete inputs, two analog outputs, up to six relay outputs plus communications.

Territory Restriction: Due to our territory agreement with Siemens, Lesman is the authorized Siemens sales representative in Illinois, Indiana, Wisconsin, Eastern Missouri, Michigan's Upper Peninsula, Paducah KY area, Oregon, Washington, Northern Idaho, Western Montana, Alaska, and Hawaii. If you are outside that area, you can find your local sales office or get technical assistance by calling 800-365-8766 or 972-522-4500, or sending an email to

SITRANS LT500 is a single- and multi-vessel level monitor and controller. It offers true dual-point monitoring, digital communications, advanced control functionality, with advanced relay alarming, pump control functions, and volume conversion. It's capable of monitoring open channel flow, and can operate pumps during lower-cost time periods and manage pump rosters for efficiency.

Key applications include wet wells, flumes, weirs, bar screen control, hoppers, chemical storage, liquid storage, crusher bins, and dry solids storage.

  • Single- or dual-point level monitoring, volume, flow measurement in open channels, differential control, extended pump control, and alarm functions
  • One or two sensor inputs, 4-20 mA or HART protocol from supported sensors (like Siemens SITRANS LR110, LR120, or SITRANS Probe LU240)
  • Two discrete inputs, can be used for backup level override from point level devices
  • Two 0/4-20 mA analog outputs plus up to six independently programmable relays for pump control, alarms, and remote totalization
  • Available with HART, Modbus RTU, Profibus PA, Profibus DP, or ProfiNet communications
  • Easy-to-use local display with four-button programming, menu-driven parameters, and Siemens wizard support for key applications
  • Automatic false echo suppression to ignore signals from fixed obstructions
  • Designed with removable terminal block for easy wiring

Supported by

Siemens Advantage Plus


Need technical help?
Visit the Siemens USA Support center.

More Information
Point or Continuous Level Continuous
Level Media Liquid, Slurry, Interface, Dry Solid
Level Technology Radar
Measuring Range Depends on Sensor

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