+1 541-471-7111Contact Sales

GAS-1057 Total Reduced Sulfur Analyzer


The GAS-1057 Total Reduced Sulfur (TRS) analyzer from Met One Instruments Powered by Acoem delivers precise and reliable performance at an excellent value.

It uses proven UV fluorescent radiation technology and a thermal converter to measure TRS in ambient air (LDL < 0.3 ppb, Range 0 – 2 ppm).

TRS is measured by converting TS to SO2 using the external Acoem HTO1000 converter and then measuring the resulting SO2 using the pulsed fluorescence technique.




Based on the GAS-1050 analyzer that has the following approvals:

  • US EPA approval (EQSA-0809-188)


The Met One range of gas analyzers have been designed using experience and knowledge gained from operating large air quality monitoring networks for more than 40 years. The result, instruments that integrate seamlessly into continuous monitoring networks.

  • Reliable performance backed up by a two-year warranty.
  • Minimize time spent on site performing maintenance through superior remote instrument control, diagnostic viewing, and calibration.
  • Comprehensive data logging and remote viewing of over 200 operational parameters.
  • Versatile interfacing through RS232, USB, analog, TCP/IP, and optional Bluetooth.
  • Easier setup through an intuitive menu system with “Quick Menu”, advanced GUI, and a large keypad with tactile keys.
  • Instant display of operational status using illuminated traffic lights on the front panel.
  • Removable flash memory stores 10 years of data, including up to 12 individual parameters and event logs. Operational parameters can also be transferred to memory for easy retrieval.
  • Latest firmware updates can easily be installed using the USB flash memory drive.
  • Programming, viewing, downloading, and emailing of data is made even simpler using optional Bluetooth connectivity combined with Android App.
  • Enhanced operator safety through the use of 12 VDC internal voltages.
  • Reduced cost of spare parts, accessories, and consumable items through extensive use of standard components across the Met One analyzer range.
  • Rack slide design makes accessing internal components and removing the analyzer from a rack cabinet easy.
  • AQMS power usage can be reduced due to the instrument’s low power demand and its ability to operate over a wide temperature range.

Options & Accessories

  • Acoem HTO1000 thermal catalytic converter.
  • External AC powered pump (capable of operating 3 analyzers, excluding NOX).
  • Dual filter (particulate).
  • Rack slide kit.
  • Bluetooth.
  • High pressure zero/span valves.
  • SO2 scrubber.
  • Printed manual – digital version of manual supplied with analyzer.
  • Internal long life, low power maintenance free pump (max 6 watts).

For Complete Specifications and Product Information, please view the Product Data Sheet.


Specifications are subject to change at any time.
Contact Us