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Rosemount™ MLT4 Continuous Gas Analyzers
rosemount mlt4
Housed in a 19“ rack enclosure, the MLT4 is a multi-component gas analyzer that can measure up to five components simultaneosly and features NDIR / UV / VIS photometer paramagnetic and electrochemical O2, and thermal conductivity sensors.
The MLT provides greater installation flexibility and can be configured as a single stand-alone analyzer or as a central interface for multiple analyzer modules with a network board (LON). In addition
Rosemount™ MLT4 Continuous Gas Analyzers


Power Supply
120/230V AC, 50/60Hz
UPS Rack Module: 19“, 3 HU,21 DU
SL 5 (SL 10): 125 x 65 (122) x 103 mm (H x W x D)
Approx. 8–13 kg, depending on configuration
Enclosure Rating
IP 20 according to IEC 60529: General purpose for installation in weather protected area
Humidity Range
< 90 % r.h. @ 20 °C (68 °F) / < 70 % r.h. @ 40 °C (104 °F)


  • Multi-component analyzer with multi-channel capability
  • NDIR: microflow sensor or solid-state detector
  • NDUV/VIS: vacuum diode
  • O2: fast response paramagnetic or long-term stable electrochemical oxygen sensor
  • Four ranges per channel
  • Dynamic autoranging ratio 1 : 10 or more (up to 1 : 250)
  • Autocalibration via internal or external valve block, controlled I/O, serial interface, network or time-programmed
  • Zero and span stability by autozero and automatic gain control without span gas
  • Thermostat controlled benches (standard 55 °C, up to 120 °C as option)
  • Barometric or process pressure compensation
  • Sample flow rate measurement
  • Suppressed ranges for O2, H2, CO2 and N2O