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The series consists of five transmitters:

  • SITRANS LR100 – basic 4-20 mA measurement to 8 m with cable
  • SITRANS LR110 – with communications, hazardous approvals options, and range to 15 m
  • SITRANS LR120 – with communications, longest range to 30 m, and optional submergence shield for flooding protection
  • SITRANS LR140 – basic measurements to 8 m with terminal connection
  • SITRANS LR150 – with HART communication, hazardous approvals, local HMI option, and range to 15 m

Benefits

  • Easy Bluetooth® wireless technology for easy and quick setup with Siemens SITRANS mobile IQ App
  • 80 GHz narrow beam and small size allows for the easiest installation and commissioning
  • Custom radar microchip means signal killer conditions like condensation, buildup or fluffy solids are no match for the extreme sensitivity of the microchip, the weakest signals are still detected
  • Zero blanking zone allows measurement range right up to the sensor and with an accuracy of 2 mm you can get rid of costly manual measurement methods
  • Digitalization and Industry 4.0 ready with HART 7.0 or optional Modbus RTU for intelligent, value adding data locally or to the cloud

Detail

SITRANS LR100 SITRANS LR110 SITRANS LR120 SITRANS LR140 SITRANS LR150
7ML530 7ML531 7ML532 7ML533 7ML534
Basic 4-20 mA measurement
to 8 m with cable
With communications, hazardous approvals options, and range to 15 m With communications,
longest range to 30 m,
and optional submergence
shield for flooding protection
Basic measurement to 8 m
with terminal connection
With HART communication,
hazardous approvals, l
ocal HMI option,
and range to 15 m
Measuring pinciple 78-82 GHz, FMCW 78-82 GHz, FMCW 78-82 GHz, FMCW 78-82 GHz, FMCW 78-82 GHz, FMCW
Measuring range 8 m (26 ft) 15 m (49 ft) 30 m (98 ft) 8 m (26 ft) 15 m (49 ft)
Process connections PVDF Thread 1½” and 1″ PVDF Thread 1½” and 1″ PVDF Thread 1″ PVDF Thread 1½” PVDF Thread 1½”
Process pressure -1 to 3 bar -1 to 3 bar -1 to 3 bar -1 to 3 bar -1 to 3 bar
Process temperature -40 to 60 °C (-40 to 140 °F) -40 to 80˚C (-40 to 176˚F) -40 to 80˚C (-40 to 176˚F) -40 to 60 °C (-40 to 140 °F) -40 to 80˚C (-40 to 176˚F)
Accuracy 5 mm (0.2″) 2 mm (0.08″) 2 mm (0.08″) 5 mm (0.2″) 2 mm (0.08″)
Beam Angle
mA/Loop,
Communications
2-wire, 4 to 20 mA 2-wire, 4 to 20 mA/

HART or 4-wire, Modbus

2-wire, 4 to 20 mA/

HART or 4-wire, Modbus

2-wire, 4 to 20 mA 2-wire, 4 to 20 mA/HART
Ex approvals no Gas and dust Gas and dust no Gas
Optional HMI no no no no Yes, with Quick Start Wizard
and diagnostic support
Bluetooth yes yes yes yes yes

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