MultiGas Sensors

Analyze up to 4 different gases in only one table-top casing simultaneously with 3 modules. The modular components enable flexible adaptation of the measuring system to individual measuring tasks.

rit 2024 cover mgsC2 3000

Table of Contents

Modular sensor design

It is a considerable advantage to conveniently use several high-sensitivity sensors in just one tabletop 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.

RITTER »MultiGas« takes basic IR & UV technologies to a whole new level of gas analysis experience, according to the latest scientific findings. Optionally, modules can also be equipped with a sensor for oxygen, pressure and humidity.

RITTER »MultiGas« Sensor Casing type 1 with display

Configurations and measurement ranges

Configuration choices for RITTER »MultiGas« Modules

Module types (no. of gases in group) IR Gas Group UV Gas Group Options / Additional sensors *2
mono (1)
+ options
IR
CO2 CO N2O CnHm CH4 CF4 SF6 H2O
O2 P H
UV
O3 CL2 SO2 H2S NO2 NO
O2 P H
duo (2)
+ options
IR
CO2 CO N2O CnHm CH4 CF4 SF6 H2O
O2 P H
UV
O3 CL2 SO2 NO2 NO
O2 P H
duo combi (1+1)
+ options
IR + UV
CO2 CO N2O CnHm CH4 CF4 SF6 H2O
O3 CL2 SO2 H2S NO2 NO
O2 P H
trio (3)
+ options
IR
CO2 CO N2O CnHm CH4 CF4 SF6 H2O
O2 P H
UV / UVRAS
SO2 NO2 NO
O2 P H
trio combi (1+2)*1
+ options
IR + UV
CO2 CO N2O CnHm CH4 CF4 SF6 H2O
O3 CL2 SO2 NO2
O2 P H
*1 Not all combinations possible / *2 P = pressure, H = humidity


List of standard measurement ranges *1 ( and detection limits *2 )

Standard Measuring Ranges with respective Detection Limits ( % of F.S. *3 )
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
1
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%)
CnHm*4
(< 0.1%)

(< 0.1%)

(< 0.1%)

(< 0.2%)

(< 0.2%)

(< 0.2%)

(< 0.2%)

(< 0.5%)

(< 0.5%)
CH4
(< 0.1%)

(< 0.1%)

(< 0.1%)

(< 0.1%)

(< 0.1%)

(< 0.1%)

(< 0.1%)

(< 0.3%)

(< 0.5%)
CF4
(< 0.2%)

(< 0.2%)

(< 0.2%)

(< 0.02%)

(< 0.05%)
SF6
(< 0.1%)

(< 0.1%)

(< 0.1%)

(< 0.2%)

(< 0.5%)

(< 0.3%)

(< 0.3%)
H2O
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%)
SO2
(< 0.1%)

(< 0.1%)

(< 0.1%)

(< 0.1%)

(< 0.1%)

(< 0.1%)

(< 0.1%)

(< 0.1%)

(< 0.5%)

(< 0.5%)

(< 0.5%)
H2S
(< 0.1%)

(< 0.1%)

(< 0.1%)

(< 0.1%)

(< 0.2%)

(< 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%)
*1 A standard measurement range is defined by / *2  (= 3 σ) in Percent of Full Scale / *3 F.S. = Full Scale / *4 Calibration with Propane

Infrared module NDIR Ultraviolet module NDUV

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.

Fully detailed Data Sheets

RITTER »MultiGas« Combined Modules NDIR + NDUV

CO2 CO N2O CnHm CH4 CF4 SF6 H2O O3 CL2 SO2 H2S NO2 NO

RITTER »MultiGas« Modules can also be a combination of both NDIR sensors and NDUV sensors on a common board. With this unit, up to 3 gas components can be measured simultaneously. The basic electronics can supply IR and UV radiation sources with different frequencies for 0 Hz (DC) to 100 Hz (AC). This system is an ideal tool for detecting multi-component gas at low ppm levels.

Please note: For technical and chemical reasons, not every combination of gases/measuring ranges can be analyzed/measured in a single or combined RITTER »MultiGas« module. As this is a rather complex topic, please do not hesitate to contact one of our gas experts first.

Example of RITTER MultiGas Module

Options (in addition to an IR or UV sensor only)

HXXO20230311162653PEX 2560

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: 0.1 Vol.%
  • Response time (t90): 5 - 10 s; automotive version < 3.5 s
  • Lifetime: approx. 5 years
Read MoreOxygen Sensor
HXXO20220804152150PE 2560 2

Pressure Sensor

  • Pressure compensation of measured gas concentrations
  • Measuring ranges:
    • Standard version 800 - 1,200 mbar abs.
    • H2S resistant version 0.2 – 3.5 bar abs.
  • Measurement accuracy ±1% of span (full scale)
  • Resolution: <1 mbar (2 mbar for H2S resistant version)
  • Response time (t90): 1 s
  • Incl. temperature compensation
Read MorePressure Sensor

Technologies

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