Modular Gas Analysis with »RITTER MultiGas« – The Gas Analysis Solution by RITTER for up to 4 different Gases, Pressure and Humidity Modular Gas Analysis with »RITTER MultiGas« The Gas Analysis Solution by RITTER for up to 4 different Gases, Pressure and Humidity RITTER MultiGas Sensorgehäuse

MultiGas Sensors

Modular sensor design

Sensor Casing

Analyse up to 4 different gases plus pressure and humidity simultaneously In order to adapt gas analysis as flexibly as possible to individual measurement tasks, the single components were designed modularly. This resulted in a »modular system« in which the various photometric components such as detectors, emitters, measuring sample cell, etc. can be assembled user-specifically.

With this sophisticated sensor design, customer-specific applications can be realized without needing a completely new development. The modularity makes replacement and maintenance considerably easier when servicing is required. In contrast to this design, common completely glued gas sensors can only be replaced as a complete unit thus generating high follow-up costs (total cost of ownership) in case of maintenance. Optionally, modules can also be equipped with a sensor for oxygen, pressure and humidity.

Have a look at our brand new RITTER MultiGas Sensors brochure!

Configurations and measurement ranges

List of measurement ranges

Measuring ranges / Full scale value (F.S.)
100 Vol.% 50 Vol.% 30 Vol.% 20 Vol.% 10 Vol.% 5 Vol.% 1 Vol.% 5,000 ppm 2,000 ppm 1,000 ppm 500 ppm 300 ppm 100 ppm 50 ppm 10 ppm
CO2
CO
N2O
CH4
CnHm*
CF4
SF6
H2O Measurement ranges on request
O3
CL2
H2S
SO2
NO2
NO

Infrared module NDIR Ultraviolet module NDUV Ultraviolet module NDUV / UVRAS

* Calibration with Propane



Table of Detection Limits (% of Full Scale Value)

Detection Limits / % of Full Scale Value (F.S.)
100 Vol.% 50 Vol.% 30 Vol.% 20 Vol.% 10 Vol.% 5 Vol.% 1 Vol.% 5,000 ppm 2,000 ppm 1,000 ppm 500 ppm 300 ppm 100 ppm 50 ppm 10 ppm
CO2 < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.3% < 0.3%
CO < 0.2% < 0.2% < 0.2% < 0.2% < 0.2% < 0.2% < 0.2% < 0.3% < 0.5% < 0.5%
N2O < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.3%
CH4 < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.3% < 0.5%
CnHm* < 0.1% < 0.1% < 0.1% < 0.2% < 0.2% < 0.2% < 0.2% < 0.5% < 0.5%
CF4 < 0.2% < 0.2% < 0.2%
SF6 < 0.1% < 0.1% < 0.1% < 0.2% < 0.5% < 0.3% < 0.3%
H2O Measurement ranges on request
O3 < 0.1% < 0.1% < 0.1% < 0.2% < 0.5% < 0.5% < 0.5%
CL2 < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.2% < 0.5%
H2S < 0.1% < 0.1% < 0.1% < 0.1% < 0.2% < 0.5%
SO2 < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.1% < 0.5% < 0.5% < 0.5%
NO2 < 0.1% < 0.1% < 0.1% < 0.2% < 0.2% < 0.5% < 0.5% < 0.5%
NO < 0.1% < 0.1% < 0.1% < 0.2% < 0.2%

Infrared module NDIR Ultraviolet module NDUV Ultraviolet module NDUV / UVRAS

* Calibration with Propane

Definition of Detection Limit

The Detection Limit is the smallest measurement value which can be obtained with a specific uncertainty. This uncertainty includes the resolution, noise and stability of the gas sensor for a specific gas and specific measurement range. For evaluation of the detection limit value, several single measurements are taken at the identical measurement conditions. With the obtained single measurement results the standard deviation “Sigma” (σ) is calculated. The values given in the table equal the triple amount of Sigma.



Available arrangements

Arrangement Sensor 1 (*) Sensor 2 (*) Sensor 3 (*) Options / Addiotional sensors (**)
MultiGas mono
1 Sensor + options
1.1
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
O2 P H
1.2
O3 CL2 H2S SO2 NO2
O2 P H
MultiGas duo
2 Sensors + options
2.1
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
O2 P H
2.2
O3 CL2 H2S SO2 NO2
O3 CL2 SO2 NO2
O2 P H
2.3
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
O3 CL2 SO2 NO2
O2 P H
MultiGas trio
3 Sensors + options
3.1
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
O2 P H
3.2
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
O3 CL2 SO2 NO2
O3 CL2 SO2 NO2
O2 P H
3.3
SO2
NO2
NO
O2 P H
(*) Only one gas selectable per sensor
(**) P = pressure, H = humidity

Modules built into table-top casing

MultiGas Infrared Module NDIR

  • NDIR Sensor = non-dispersive infrared sensor
  • Featuring high-performance light-emitting diodes (IR-LED) and thermal micro-radiators

MultiGas Ultraviolet Module NDUV

  • NDUV Sensor = non-dispersive UV sensor
  • Featuring high-performance light-emitting diodes (UV-LED) and gas discharge lamps (EDL)

MultiGas Infrared plus Ultraviolet Module

  • Enables the measurement of 3 gas components simultaneously

MultiGas Ultraviolet Module NDUV / UVRAS

  • UVRAS = UV resonance spectroscopy
  • Allows simultaneous gas analysis of NO, NO2 and SO2

Options / Additional sensors

Oxygen Sensor

  • Electrochemical sensor
  • Measuring ranges:
    • Standard version 0 – 25 % or 0 – 100 %
    • H2S resistant version 0.5 – 35 %
  • Measurement accuracy ±2 % of span (full scale)
  • Resolution: < 0.5 % of span (full scale)
  • Response time (t90): ≈ 15 s; automotive version ≈ 5 s
  • Lifetime: approx. 5 years

Pressure Sensor

  • Pressure compensation of measured gas concentrations
  • Measuring range: 800 - 1,200 mbar abs.
  • Measurement accuracy ±1% of span (full scale)
  • Resolution: 1 mbar
  • Response time (t90): 1 s
  • Incl. temperature compensation

Humidity sensor

  • Polymer humidity sensor
  • Measuring range: 0-100% RH
  • Measurement accuracy ±2% RH of span (full scale)
  • Resolution: ±1% RH
  • Response time (t90): 12 s
  • Incl. temperature compensation
  • Indicated values (in software): absolute [% absH] and relative humidity [% rH]

Analog Voltage Output

  • The Analog Voltage Output Module allows the output of gas concentration values for up to 4 different gases at 4 separate channels
  • Voltage levels:
    • 0 – 2 V
    • 0 – 5 V
    • 0 – 10 V

Technologies

HXXO20190220180649 1200

Humidity Sensor

The HUMI.sens® is based on a capacitive humidity sensor. This sensor consists of a hygroscopic polymer material in which the water vapor from the measurement gas is stored. This incorporation …

Axetris2

IR-Photometry

Within the infrared spectral range between 2 µm to 12 µm or 14 µm the IR photometry can detect different gases. This spectral range is much larger than the UV …

HXXO20190220180334 1200

Oxygen Sensor

The O2.sens from Wi.Tec is based on an electrochemical process. In this process, a chemical reaction takes place with the oxygen to be measured and a liquid electrolyte. In this …

LED CHIP e1458473797471

UV-Photometry

The UV photometry is based on the absorption of radiation in the spectral range between 200nm and 400nm. In this area, some important technical gases have a pronounced absorption band. …

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