Mettler Toledo PA Products


Gas Analytics
Oxygen Sensors
PH Sensors
Turbidity Sensors

Gas Analytics TDL

Tunable Diode Laser (TDL) Gas Analyzers

Designed for in situ and extractive chemical processes, the TDL gas analyzers are easy to install and require almost no maintenance.

  • No alignment needed with one-flange probe concept
  • Drift-free measurement requires no calibration
  • Fast response time with in situ installation
  • Options for extractive and cross- pipe installation

2 TD_GPro_500_TDL_SEPT17

Gas Analytics Amperometric

Amperometric Sensor for Gas- Phase oxygen

In process-gas streams or tank applications, amperometric oxygen gas sensors provide reliable, real-time measurements without the need for gas sampling or conditioning.

  • Easy in situ installation in pipes or vessels
  • No maintenance-prone sampling system needed
  • Easy two-minute maintenance and calibration



In industrial processes different parameter measurement systems are mounted to optimize and control the process. Housings are a very important part of the whole system as they allow to insert the sensors into the media at a specific place in the process (pipe, vessel or basin).

2   FF_housings_infit76xeand76ye Series (741kb)
2   FF_housings_intrac7xxeseries (272kb)
2   TD_Housing_InFit76Xe (839kb)
2   FF_InTrac781_SEPT17
2   TD_Housings_InTrac777e (282kb)
2   TD_housing_indip550e (96kb)

Oxygen Sensors

Measurements of dissolved oxygen (DO) in industrial processes serve to control the oxygen concentration, optimize the process and yield. Besides inline measurement the off- or near-line measurement system is often used for control at different sites with a compact portable transmitter/sensor system with data-logger, sampling device and interface to download stored measurement values.
2FF_O2_Systems_InPro6000_Series (2.38Mb)
2TD_Dissolved_Oxygen_Sensor_IP6000 (323kb)
2TD_DO_InPro69x0_6800_6050 (541kb)

PH Sensors

Monitoring of pH and redox (ORP) is important in many different industrial processes to reduce cost and optimize yield. The requirements of various industry processes are different. For example, in chemical processes sensors must withstand acids or caustic solutions at high temperatures. The electrodes are also certified for use in ATEX Hazardous Areas.

   FF_ph_Lowmaint_cpi electrodes (517kb)
2   FF_ISM_Measuring_systems (455kb)
2   DS_iSense_Asset_Suite_ISM_Sensors (280kb)
2   TD_pH_Electrodes_InPro3250_3250SG (165kb)
2   TD_ph_electrode_inpro3100-3100ud (58kb)
2   DS_pH_InPro4800i_en_30319714_Apr16
2   TD_pH_electrode_InPro4260 (472kb)
2   TD_pH_Electrode_InPro4501VP (66kb)
2   FF_ph_electrodes liquid electrolyte (432kb)

Multivariable Transmitters

Transmitters are an integral part of on-line measurement systems used to monitor and control industrial processes. METTLER TOLEDO offers a comprehensive range of transmitters for pH, DO, conductivity, resistivity, TOC, dissolved ozone, turbidity, CO2 and flow.

2   FF_Transmitter_Series_M300_M40_M700_M800 (1.53Mb)
2   FF_Transmitter_M800 (849kb)
2   FF_Transmitter_M400 2-wire (361kb)
2   TD_Transmitter_M400 G2 (344kb)
2   TD_transmitter_M300 4 wire (678kb)
2   DS Transmitter M100 (1.53Mb)

Turbidity Sensors

Turbidity measurements provide data on the concentration of undissolved, suspended particles present in a liquid phase. The determined particle concentration is used for process monitoring and optimization e.g. to control biomass growth, crystallization and filtration processes or concentration measurement of solid matters in wastewater.

2 FF_Turbidity_Systems (527kb)
2TD_Turbidity_System TRB8300 & Inpro8000 (143kb)
2DS_Turbidity_system_InPro8300_RAMS (539kb)