Go


TOX 592 | Sensor for Measuring the Concentration of Toxic Gases

 

 

Application  

The ADOS TOX 592 gas sensor is suitable for continuous measurement of a concentration of toxic gas in air, over the range of 0 - 20 ppm to 0 - 1000 ppm.
Field of Application  

  • In garages for measuring, control and warning, in conjunction with the ADOS Multitronik 592 tested to VDI 2053 standards
  • For monitoring at working places, to control the maximum concentration value e.g. in laboratories or motor test stands
  • In private and collective shelters for monitoring the external or internal air
Gases and Measuring Ranges  

Gas Formula Measuring Range
Carbon monoxide CO 0 - 300 ppm
Ammonia NH3 0 - 200 ppm
Nitrogen dioxide NO2 0 - 30 ppm
Sulphur dioxide SO2 0 - 50 ppm
Hydrogen sulphide H2S 0 - 20 ppm

Other gases and measuring ranges on request
Function Example, CO-sensor  


The ADOS 592 CO gas sensor uses a method of measurement where the air to be measured is diffused in a chemical measuring cell.

The (H+)-ions and the electrons released, are consumed at the electrode in a cathode reaction.

The flow of current between anode and cathode, generated by this process, is directly proportional to the CO-concentration in the measured air.

The sensor current is amplified and applied via a 4-20 mA interface or via the LON® field-bus to an evaluation unit, e.g. ADOS Multitronik 592, where the measured variable is processed and indicated in ppm CO, together with any control and warning functions which may be necessary.
Product data sheet  

Technical Data e.g. CO sensor  

Measuring principle: Electro-chemical reaction
Measurable substance: Carbon monoxide
Measuring ranges: 0-150 ppm, 0-300 ppm, other ranges on request
Zero error: < 10 ppm CO
Reading instability: < 3 ppm CO
Accuracy: ± 3 % of f.s.d.
Zero drift: < 2 % per year
Repeatability: < 2 % per year
Linearity: < 2 % of f.s.d.
Response time (t90-Zeit): < 60 sec.  
Cross sensitivity: < 2 % with integrated filter
Interface: -wire current interface
4-20 mA or LON® four-wire techniques,
data transmission 78 kbps
Supply voltage: 15 V - 30 V
dependent on maximum load 100 ohm - 500 ohm
Ambient temperature: 14 °F to 104 °F, with sensor temperature compensation
Humidity range: 10 % - 99 %, non-condensing
Serviceable life of cell: approx. 2 years
Protection class: IP 30
Dimensions:
(height x diameter)
3.1 x 3.1 inch
Weight: 1.3 lbs
Test certificate: To German standards, according to VDI 2053 in conjunction with ADOS Multitronik 592

 

Reaction at the anode:
CO + H2O      Þ CO2 +2H+ + 2e-
Reaction at the cathode:
½ O2 + 2H+ + 2e-  ÞH2O