[Back]NDIR Flow Gas Module
Product Overview

The S-MODULE EVO FLOW are based on the infrared absorption technology and comply with the highest standards in accuracy, reliability and efficiency. Due the consequent use of this optical principle the systems work without abrasion or chemical reactions and are nearly maintenance free.

S-0004821 S-MODULE EVO (flow) C2H4 2000ppm 156mm
S-0004962 S-MODULE EVO (flow) CH3Br 5Vol.% 200g/m³ 116mm [gold cuvette]
S-0007145 S-MODULE EVO (flow) CH3Br 30Vol.% 116mm [gold cuvette]
S-0004797 S-MODULE EVO (flow) CH4 100Vol.% 76mm
S-0004798 S-MODULE EVO (flow) CH4 15Vol.% 76mm
S-0006935 S-MODULE EVO (flow) CH4 15Vol.% 76mm (configuration fast)
S-0005413 S-MODULE EVO (flow) CH4 20Vol.% 76mm
S-0005487 S-MODULE EVO (flow) CH4 30Vol.%  76mm
S-0004802 S-MODULE EVO (flow) CH4 5000ppm 156mm
S-0004801 S-MODULE EVO (flow) CH4 5Vol.% 156mm
S-0005313 S-MODULE EVO (flow) CO 10000ppm (1Vol.%) 156mm
S-0007130 S-MODULE EVO (flow) CO 10000ppm (1Vol.%) 156mm (configuration fast)
S-0004780 S-MODULE EVO (flow) CO 100Vol.% 76mm
S-0007060 S-MODULE EVO (flow) CO 10Vol.%
S-0004812 S-MODULE EVO (flow) CO 15Vol.% 76mm
S-0006902 S-MODULE EVO (flow) CO 15Vol.%  76mm (configuration fast)
S-0003962 S-MODULE EVO (flow) CO 2000ppm  156mm
S-0004793 S-MODULE EVO (flow) CO 20Vol.%  76mm
S-0004815 S-MODULE EVO (flow) CO 2Vol.% 76mm
S-0005488 S-MODULE EVO (flow) CO 30Vol.% 76mm
S-0004819 S-MODULE EVO (flow) CO 5Vol.% 76mm
S-0007055 S-MODULE EVO (flow) CO2 100ppm  300mm silver
S-0004789 S-MODULE EVO (flow) CO2 100Vol.%  76mm
S-0004790 S-MODULE EVO (flow) CO2 10Vol.% 76mm
S-0006909 S-MODULE EVO (flow) CO2 10Vol.%  76mm (configuration fast)
S-0004804 S-MODULE EVO (flow) CO2 1Vol.% 76mm
S-0004810 S-MODULE EVO (flow) CO2 2000ppm 156mm
S-0004786 S-MODULE EVO (flow) CO2 20Vol.%  76mm
S-0005770 S-MODULE EVO (flow) CO2 2Vol.%  76mm
S-0004807 S-MODULE EVO (flow) CO2 30Vol.% 76mm
S-0006596 S-MODULE EVO (flow) CO2 30Vol.% 76mm (configuration fast)
S-0004811 S-MODULE EVO (flow) CO2 5000ppm  76mm
S-0004782 S-MODULE EVO (flow) CO2 50Vol.%  76mm
S-0004785 S-MODULE EVO (flow) CO2 5Vol.%  76mm
S-0004823 S-MODULE EVO (flow) SF6 1000ppm  70*40mm
S-0005533 S-MODULE EVO (flow) SF6 100Vol.%  70mm (#72-18)
S-0004779 S-MODULE EVO (flow) SF6 30Vol.%  70mm
S-0005098 S-MODULE EVO (flow) SF6 5000ppm 70x40mm
S-0004824 S-MODULE EVO (flow) SF6 50ppm  156mm
S-0004778 S-MODULE EVO (flow) SF6 70Vol.%  70mm
S-0004844 S-MODULE EVO (flow) SO2 2000ppm  156mm DP=4°C±1K
S-0005774 S-MODULE EVO (flow) SO2F2 100ppm  340mm (gold)
S-0004794 S-MODULE EVO (flow) SO2F2 6Vol.%  70mm

Specification:

Detection Principle NDIR (Dual Beam)
Measuring Range See List
Gas Supply Flow
Dimensions See Mechanical Data
Hose connection 3mm internal, 5mm outside
Response time (T90) Appr. 12 s (@ 0.7 L/min)
Digital Resolution(@zero) 1 ppm ...0.1 Vol.%
Detection Limit (3sigma) ≤ 1 % FS(typically)
Repeatability ≤ ±1 % FS
Linearity Error ≤ ±1.0 % FS ( or ≤ ±1.5 % FS depend on version)
Stability (zero) ≤ ±2 % FS during 12 month
Stability (span) ≤ ±2 % FS during 12 month
Temperature Drift. (zero) ≤ ±0,1 % FS per °C
Temperature Drift. (span) ≤ ±0,15 % FS per °C
Pressure Drift. 0,1 % up to 0,2 % Value per mbar
Operating Temp 0 °C up to 50 °C
Storage Temp -20 °C up to 60 °C
Ambient Humidity 0 % up to 95 % rel. Humidity (not condensing )
Ambient Air Pressure 800 up to 1200 mbar
Warm up Time < 2 minutes (cold start ) < 30 minutes full specification
Flow 0,1 up to 1,0 L / min (const )
Digital Output Modbus ASCII RTU TTL
2400-115.200 auto Baud/ auto Frame
Out 1 Signal output TTL
Option : Analog Output 0 / 4 … 20 mA     (With S-Connect)
0 / 0.2...1V        (With S-Connect V)
RS 232           (With S-Connect)
RS 485           (With S-Connect RS485)
Operating Voltage 3,3 to 6 V DC ± 5 %
Drive Current < 240mA@5V ( average )
Power consumption < 800 mW

Product Description:

The S-MODULE EVO FLOW are based on the infrared absorption technology and comply with the highest standards in accuracy, reliability and efficiency.

Due the consequent use of this optical principle the systems work without abrasion or chemical reactions and are nearly maintenance free.


As basis the IR principle uses the individual absorption spectrum of the gas to be detected and specifies the concentration by the precise quantitative analysis.

Because all measured gases absorb IR radiation in a different spectrum a so called “fingerprint” is given which ensures a selective characterization with less cross sensitivities.

An integrated evaluation electronic delivers finally an easy to use concentration signal and compensates all temperature- and drift effects.


The S-MODULE EVO FLOW housing is made of aluminum to protect the sensor from mechanical damage and is with fitted with gas line connectors (inlet and outlet) to allow perfusion of the S-MODULE EVO.  Tubing with an internal diameter of 3 mm and external diameter of 5 mm is needed to connect up to the measurement cell. Ensure that tubing is securely attached to the inlet and outlet connectors.

Product Overview

The S-MODULE EVO FLOW are based on the infrared absorption technology and comply with the highest standards in accuracy, reliability and efficiency. Due the consequent use of this optical principle the systems work without abrasion or chemical reactions and are nearly maintenance free.

S-0004821 S-MODULE EVO (flow) C2H4 2000ppm 156mm
S-0004962 S-MODULE EVO (flow) CH3Br 5Vol.% 200g/m³ 116mm [gold cuvette]
S-0007145 S-MODULE EVO (flow) CH3Br 30Vol.% 116mm [gold cuvette]
S-0004797 S-MODULE EVO (flow) CH4 100Vol.% 76mm
S-0004798 S-MODULE EVO (flow) CH4 15Vol.% 76mm
S-0006935 S-MODULE EVO (flow) CH4 15Vol.% 76mm (configuration fast)
S-0005413 S-MODULE EVO (flow) CH4 20Vol.% 76mm
S-0005487 S-MODULE EVO (flow) CH4 30Vol.%  76mm
S-0004802 S-MODULE EVO (flow) CH4 5000ppm 156mm
S-0004801 S-MODULE EVO (flow) CH4 5Vol.% 156mm
S-0005313 S-MODULE EVO (flow) CO 10000ppm (1Vol.%) 156mm
S-0007130 S-MODULE EVO (flow) CO 10000ppm (1Vol.%) 156mm (configuration fast)
S-0004780 S-MODULE EVO (flow) CO 100Vol.% 76mm
S-0007060 S-MODULE EVO (flow) CO 10Vol.%
S-0004812 S-MODULE EVO (flow) CO 15Vol.% 76mm
S-0006902 S-MODULE EVO (flow) CO 15Vol.%  76mm (configuration fast)
S-0003962 S-MODULE EVO (flow) CO 2000ppm  156mm
S-0004793 S-MODULE EVO (flow) CO 20Vol.%  76mm
S-0004815 S-MODULE EVO (flow) CO 2Vol.% 76mm
S-0005488 S-MODULE EVO (flow) CO 30Vol.% 76mm
S-0004819 S-MODULE EVO (flow) CO 5Vol.% 76mm
S-0007055 S-MODULE EVO (flow) CO2 100ppm  300mm silver
S-0004789 S-MODULE EVO (flow) CO2 100Vol.%  76mm
S-0004790 S-MODULE EVO (flow) CO2 10Vol.% 76mm
S-0006909 S-MODULE EVO (flow) CO2 10Vol.%  76mm (configuration fast)
S-0004804 S-MODULE EVO (flow) CO2 1Vol.% 76mm
S-0004810 S-MODULE EVO (flow) CO2 2000ppm 156mm
S-0004786 S-MODULE EVO (flow) CO2 20Vol.%  76mm
S-0005770 S-MODULE EVO (flow) CO2 2Vol.%  76mm
S-0004807 S-MODULE EVO (flow) CO2 30Vol.% 76mm
S-0006596 S-MODULE EVO (flow) CO2 30Vol.% 76mm (configuration fast)
S-0004811 S-MODULE EVO (flow) CO2 5000ppm  76mm
S-0004782 S-MODULE EVO (flow) CO2 50Vol.%  76mm
S-0004785 S-MODULE EVO (flow) CO2 5Vol.%  76mm
S-0004823 S-MODULE EVO (flow) SF6 1000ppm  70*40mm
S-0005533 S-MODULE EVO (flow) SF6 100Vol.%  70mm (#72-18)
S-0004779 S-MODULE EVO (flow) SF6 30Vol.%  70mm
S-0005098 S-MODULE EVO (flow) SF6 5000ppm 70x40mm
S-0004824 S-MODULE EVO (flow) SF6 50ppm  156mm
S-0004778 S-MODULE EVO (flow) SF6 70Vol.%  70mm
S-0004844 S-MODULE EVO (flow) SO2 2000ppm  156mm DP=4°C±1K
S-0005774 S-MODULE EVO (flow) SO2F2 100ppm  340mm (gold)
S-0004794 S-MODULE EVO (flow) SO2F2 6Vol.%  70mm

Specification:

Detection Principle NDIR (Dual Beam)
Measuring Range See List
Gas Supply Flow
Dimensions See Mechanical Data
Hose connection 3mm internal, 5mm outside
Response time (T90) Appr. 12 s (@ 0.7 L/min)
Digital Resolution(@zero) 1 ppm ...0.1 Vol.%
Detection Limit (3sigma) ≤ 1 % FS(typically)
Repeatability ≤ ±1 % FS
Linearity Error ≤ ±1.0 % FS ( or ≤ ±1.5 % FS depend on version)
Stability (zero) ≤ ±2 % FS during 12 month
Stability (span) ≤ ±2 % FS during 12 month
Temperature Drift. (zero) ≤ ±0,1 % FS per °C
Temperature Drift. (span) ≤ ±0,15 % FS per °C
Pressure Drift. 0,1 % up to 0,2 % Value per mbar
Operating Temp 0 °C up to 50 °C
Storage Temp -20 °C up to 60 °C
Ambient Humidity 0 % up to 95 % rel. Humidity (not condensing )
Ambient Air Pressure 800 up to 1200 mbar
Warm up Time < 2 minutes (cold start ) < 30 minutes full specification
Flow 0,1 up to 1,0 L / min (const )
Digital Output Modbus ASCII RTU TTL
2400-115.200 auto Baud/ auto Frame
Out 1 Signal output TTL
Option : Analog Output 0 / 4 … 20 mA     (With S-Connect)
0 / 0.2...1V        (With S-Connect V)
RS 232           (With S-Connect)
RS 485           (With S-Connect RS485)
Operating Voltage 3,3 to 6 V DC ± 5 %
Drive Current < 240mA@5V ( average )
Power consumption < 800 mW

Product Description:

The S-MODULE EVO FLOW are based on the infrared absorption technology and comply with the highest standards in accuracy, reliability and efficiency.

Due the consequent use of this optical principle the systems work without abrasion or chemical reactions and are nearly maintenance free.


As basis the IR principle uses the individual absorption spectrum of the gas to be detected and specifies the concentration by the precise quantitative analysis.

Because all measured gases absorb IR radiation in a different spectrum a so called “fingerprint” is given which ensures a selective characterization with less cross sensitivities.

An integrated evaluation electronic delivers finally an easy to use concentration signal and compensates all temperature- and drift effects.


The S-MODULE EVO FLOW housing is made of aluminum to protect the sensor from mechanical damage and is with fitted with gas line connectors (inlet and outlet) to allow perfusion of the S-MODULE EVO.  Tubing with an internal diameter of 3 mm and external diameter of 5 mm is needed to connect up to the measurement cell. Ensure that tubing is securely attached to the inlet and outlet connectors.

SIGAS Measurement Engineering Corp. ICP-19046713
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