- 1 General Specifications
- 1.1 1.1. Casing Types
- 1.2 1.2. Dimensions
- 1.3 1.3. Assignment of Sensor Types to possible Sensor Combinations
- 1.3.1 Part 1: Pre‐configured SensorsIncl. casing type 1 with gas connection fittings, data port, power supply Ready for use
- 1.3.2 Part 2: Pre‐configured SensorsIncl. casing type 2 with gas connection fittings, data port, power supply Ready for use
- 1.3.3 Part 3: Individually combinable sensor modules Composition according Customer Specification Delivery incl. casing of suitable size according to number and type of modules Ready for use
- 1.3.4 Part 4: Casings for Sensor Modules assembled according to Customer Specification
- 1.3.5 Part 5 Built‐in Options
- 1.3.6 Part 6: Accessories / Options
- 2 Disadvantages of electrochemical (EC) sensors in comparison to the optical gas sensors RITTER »MultiGas«
- 3 Preventive / Protective Measures regarding the Gas to be measured
- 4 Scope of Supply
- 5 Setup
- 6 Infrared Sensors
- 7 Ultraviolet Sensors
- 8 Opções (installed inside of the sensor casing)
General Specifications
1.1. Casing Types
1.2. Dimensions
Casing Type 1 | Casing Type 2 | |
---|---|---|
A | 171 mm | 444 mm |
B | 290 mm (1) | 305 mm |
C | 86 mm | 145 mm |
Weight, approx. (2) | 2+ kg | 6.5 – 8 kg |
Connections gas in-/outlet | PVDF screw-type tube connection for tube Ø 4i / 6o mm | PVDF screw-type tube connection for tube Ø 4i / 6o mm |
Interfaces | USB ( Standard) / RS232 ( Option) | USB ( Standard) / RS232 ( Option) |
Power | 24 V DC | 24 V DC |
(2) Depending on type and number of built-in sensor modules
1.3. Assignment of Sensor Types to possible Sensor Combinations
- Part 1 – Pre‐configured sensors, incl. casing type 1 with gas connection fittings, data interface, plug‐in power supply – ready for use
- Part 2 – Pre‐configured sensors, incl. casing type 2 with gas connection glands, data interface, fittings, data interface, plug‐in power supply ‐ ready for use
- Part 3 – Individually combinable sensor modules, composition according to customer specification, delivery incl. housing in suitable size according to number and type of modules – ready for use
- Part 4 – Casings for sensor modules, assembled according to customer’s specification
- Part 5 – Built‐in options mounted inside of the casing
- Part 6 – Accessories / options
Part 1: Pre‐configured Sensors
Incl. casing type 1 with gas connection fittings, data port, power supply Ready for use
Sensor Type: RITTER MultiGas xxx |
Article No. |
Group of Gases IR |
Number of Detectable Gases in this Group |
Group of Gases UV |
Number of Detectable Gases in this Group |
---|---|---|---|---|---|
xxx = mono IR1 | 2678 |
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
|
1 | ||
xxx = duo IR2 | 2742 |
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
|
2 | ||
xxx = trio IR3 | 2743 |
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
|
3 | ||
xxx = mono UV1 | 2749 |
O3 Cl2 ≤ 5% SO2 NO2
|
1 | ||
xxx = mono UV1 Cl2 30% | 2763 |
Cl2 ≤ 30%
|
1 | ||
xxx = duo UV2 | 2766 |
O3 Cl2 ≤ 5% SO2 NO2
|
2 | ||
xxx = duo IR1 + UV1 | 2797 |
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
|
1 |
O3 Cl2 ≤ 5% SO2 NO2
|
1 |
xxx = trio IR1 + UV2 | na |
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
|
1 |
O3 Cl2 ≤ 5% SO2 NO2
|
2 |
Part 2: Pre‐configured Sensors
Incl. casing type 2 with gas connection fittings, data port, power supply Ready for use
Sensor Type: RITTER MultiGas xxx |
Article No. |
Group of Gases IR |
Number of Detectable Gases in this Group |
Group of Gases UV |
Number of Detectable Gases in this Group |
---|---|---|---|---|---|
xxx = mono UV1 H2S ≤ 5.000 ppm | 2672 |
H2S ≤ 5.000ppm
|
1 | ||
xxx = mono UV1 H2S ≤ 1% | 2855 |
H2S ≤ 1%
|
1 | ||
xxx = UVRAS | 2812 |
SO2 NO2 NO
|
1 | ||
xxx = duo IR1 + H2S ≤ 5000 ppm | 2959 |
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
|
1 |
H2S
|
1 |
xxx = duo IR1 + (H2S ≤1% / NO) | 2960 |
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
|
1 |
H2S ≤ 1% NO
|
1 |
Part 3: Individually combinable sensor modules
Composition according Customer Specification
Delivery incl. casing of suitable size according to number and type of modules Ready for use
Sensor Type: RITTER MultiGas xxx |
Article No. |
Group of Gases IR |
Number of Detectable Gases in this Group |
Group of Gases UV |
Number of Detectable Gases in this Group |
---|---|---|---|---|---|
xxx = Mod IR1 | 2813 |
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
|
1 | ||
xxx = Mod IR2 | 2814 |
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
|
2 | ||
xxx = Mod IR3 | 2815 |
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
|
3 | ||
xxx = Mod UV1 | 2830 |
O3 Cl2 ≤ 5% SO2 NO2
|
1 | ||
xxx = Mod UV1 Cl2 30% | na |
Cl2 ≤ 30%
|
1 | ||
xxx = Mod UV1 H2S ≤ 5.000 ppm | 2841 |
H2S
|
1 | ||
xxx = Mod UV1 H2S ≤ 1% | 2856 |
H2S
|
1 | ||
xxx = Mod UV2 | 2831 |
O3 Cl2 ≤ 5% SO2 NO2
|
2 | ||
xxx = Mod UVRAS | 2917 |
SO2 NO2 NO
|
3 |
Part 4: Casings for Sensor Modules assembled according to Customer Specification
Casing Type: RITTER MultiGas xxx |
Article No. |
Casing Type | Suitable for |
---|---|---|---|
xxx = Cas-2 (1) | 2817 | Casing type 2 | … multiple modules up to 444 x 145 x 305 mm |
xxx = Cas-3 (1) | 2818 | Casing type 3 | … multiple modules up to 464 x 189 x 305 mm |
Part 5 Built‐in Options
Option Type: RITTER MultiGas xxx |
Article No. |
Name | Faixa de medição |
---|---|---|---|
xxx = O2 (2) (3) | 2767 | Oxgen Sensor | 0 – 100% |
xxx = O2-resist (3) | 2824 | Oxygen Sensor, H2S resistant | 0.5 – 35% |
xxx = P (2) (3) | 2771 | Pressure Sensor | 800 – 1200 mbar abs.[/wpml-string] / Resolution <1 mbar |
xxx = P-resist (3) | 2825 | Pressure Sensor, H2S resistant | 0.2 – 3.5 bar abs. / Resolution 2 mbar |
xxx = H (2) (3) | 2773 | Humidity Sensor | 0 – 100% RH |
xxx = A/O | 2648 | Analog Voltage Output 0-2V / 0-5V / 0-10V | 4 Analog output ports for 4 separate gas concentrations, 16 bit |
xxx = Therm-Cas | 2954 | Thermostated Casing | Heating and thermostatting of the sensor casing at 50°C |
(2) Not suitable for SO2, Cl2, H2S
(3) Available as supplement to IR or UV sensor only
Part 6: Accessories / Options
Option Type: RITTER MultiGas xxx |
Article No. |
Name | Range |
---|---|---|---|
xxx = Cal-ZP-N2 | 2805 | Calibration Gas N2 | For zero-point calibration of all gases |
xxx = Flow-V | 2806 | Mini Flow Valve | Control of flow rate, incl. Manometer for calibration gas bottle |
xxx = Cal-CG-Cat1 | 2948 | Calibration with special carrier gas (Ar, H2, He) for gases category 1 | Category 1 gases:
CO2 CO < 0Vol-% N2O CH4 CnHm* CF4 SF6 O3 CL2 SO2 < 10Vol-% NO2 NO
|
xxx = Cal-CG-Cat2 | 2949 | Calibration with special carrier gas (Ar, H2, He) for gases category 2 | Category 2 gases:
CO > 10Vol-% H2S SO2 > 10Vol-%
|
xxx = Cal-ReCal-Cat1 | 2950 | Calibration for gases category 1 | Category 1 gases:
CO2 CO < 0Vol-% N2O CH4 CnHm* CF4 SF6 O3 CL2 SO2 < 10Vol-% NO2 NO
|
xxx = Cal-ReCal-Cat2 | 2951 | Calibration for gases category 2 | Category 2 gases:
CO > 10Vol-% H2S SO2 > 10Vol-%
|
Módulo infravermelho NDIR Módulo ultravioleta NDUV Módulo ultravioleta NDUV / UVRAS
* Calibração com Propano
Disadvantages of electrochemical (EC) sensors in comparison to the optical gas sensors RITTER »MultiGas«
Preventive / Protective Measures regarding the Gas to be measured
Important: Please specify the desired options when ordering
a) Additional tube connection for flushing of the casing
The gas lines inside the casing and the measuring cuvette are gas-tight by means of O-rings and other gas-tight connections. However, as with all connections, a leakage rate, however slight, cannot be ruled out. With an additional tube connection for flushing of the casing, an accumulation of the measuring gas inside the casing can be prevented.
In the case of toxic or aggressive gases, a suction line can be connected via this tube connection, which creates a under-pressure inside the housing thus preventing the gas from escaping from the casing.
In case of ignitable gases (methane, hydrogen, etc.), a pressure or suction line can be connected via this tube connection creating an over- or under-pressure inside the casing thus preventing the accumulation of an ignitable gas mixture.
Por favor, note que: H2S can be perceived as an unpleasant smell even in the ppb range. Even with an O-ring seal, micro-leaks can occur, which can be extracted by flushing the housing.
b) Heated and thermostatted casing
A condensation of the measuring gas inside of the sensor must be prevented. This is done in general for example by a condensation trap or gas cooler.Alternatively, the inside of the sensor casing can be heated and thermostatted at 50°C (standard). The heating not only avoids condensation inside of the sensor but ensures constant measurement results as well.
c) Particle filter
Please make sure by use of a suitable filter that no particles are carried into the sensor. These might block the small orifices of the internal fittings. It is recommended to use filters of 5 micron or smaller.
Scope of Supply
No. of Items | Item |
---|---|
1 | Document folder including : Calibration Certificate / Folhas de dados / Software Manual |
1 | Sensor in table top casing |
1 | Power adapter |
1 | Data acquisition software (on USB memory card) 1 USB connection cable (sensor computer ) |
3m | Viton tubing Øi 4mm/Øo 6mm |
Setup
- Unpack all items carefully
- Install the data acquisition software according to the “RITTER MultiGas Software Manual”.
Don’t start the software at this point in time. - Place the sensor next to the gas source
Por favor, observe: A tube connection between gas source and sensors that is as short as possible allows a small dead space created by the tubing. In turn, a small dead space enables a fast response time of the sensor. - Connect the power adapter to socket “DC 24 V” at the rear side of the sensor and to mains.
- Connect the data acquisition cable to the respective socket at the rear side of the sensor and to the computer:
- USB cable to the socket “USB”
- RS232 cable to the socket “RS 232” (option )
- Connect the gas source to the gas inlet port of the sensor by using the provided tubing as follows:
- Unscrew the screw cap from the gas inlet port.
- Slide the screw cap onto the end of the tube with the thread of the screw cap facing the tube end.
- Push the tube onto the cone in the center of the gas inlet port.
- Slide the screw cap to the gas inlet port and screw it hand-tightly in place.
- Se aplicável: Conecte a porta de saída de gás do sensor a outros componentes, como bolsas de amostragem de gás, tubulação de exaustão, etc.
- Switch-on the power switch at the front side of the sensor casing.
- Start the software and open the COM port(s) of the connected sensor module(s) according to the software manual.
The RITTER »MultiGas« Sensor is now ready for use.
Infrared Sensors
Descrição
Gas analysis based on the NDIR technique is an established method to determine the concentrations of gases in complex mixtures. The RITTER »MultiGas« sensors use new optical components for optimal analysis results: Up to 3 optical filters analyse the gas which flows through the sensor as one gas stream. The optional oxygen, pressure, and humidity sensors are in-line with the same single gas stream.
The individual internal modules are sealed by means of O-ring connections.
In order to achieve an optimum adaptation to the required measuring range, the lengths of the modular measurement cells (= cuvettes) can be implemented in the range of 5 mm (large measurement range in percentage level) up to 250 mm (small measurement range in ppm level).
Cuvettes with a length ≥ 20 mm are coated with a resistant gold layer in order to improve the reflection properties for low concentration level detection. Cuvettes used with aggressive gases are gold-coated as well.
The other internal mechanical parts are made out of aluminium, optionally out of stainless steel.
For fast response applications the measuring system delivers a stable result within t90 ≈ 3 seconds.
The entire unit can be disassembled for easy maintenance/service.
Aplicativos
Specifications
General features
Measurement technology: | Innovative NDIR Sensor (non-dispersive infrared sensor) |
Detectable gases: |
CO2 CO N2O CH4 CnHm* CF4 SF6 H2O
|
Number of simultaneously detectable gases: | max. 3 per sensor unit |
Measurement ranges: | See below |
Flow rate range: | 5 ~ 300 ltr/h – For higher flow rates the sensor can be operated in bypass |
Max. gas inlet pressure: | 300 mbar |
Pressure loss (without additional optional sensors): | 10 @ 100 / 35 @ 200 / 70 @ 300 (mbar @ ltr/h) |
Temperature compensation: | Yes |
Data acquisition software: | Yes |
Lifetime of IR radiation source: | > 40 000 h |
Measurement cuvette: | Aluminium, with measurement ranges ≤1% gold-plated inside |
Cuvette sealing: | Viton O-ring |
Caixa: | High-quality table-top casing, aluminium |
Dimensions (W x H x L): | 171 x 86 x 290 mm |
Peso: | approx. 2 kg |
Gas connections: | PVDF screw-type tube connection for tube Øi 4mm, Øo 6 mm |
Measuring response
Linearity error: | < ± 1% F.S. |
Repeatability: | ± 0.5% F.S. |
Long term stability zero: | < ± 2% F.S. / week |
Long term stability span: | < ± 2% F.S. / month |
Temperature influence of zero point: | < 1% F.S. / 10K |
Temperature influence of span: | < 2% F.S. / 10K |
Cross sensitivity: | < 2% F.S. |
Pressure influence: | < 1.5% / 10hPa of reading |
Warm-up time: | 2 min |
Response time (t90): | ≈ 3 sec |
Sampling frequency by software: | ≤ 10 Hz |
Detection limit: | See below |
Resolution: | 0.5 x detection limit |
Water vapour: | No influence with measurements of CO2 and CH4 |
Electrical features
Power supply: | 24 VDC incl. power plug 100 ~ 240 VAC / 24 VDC |
Average power consumption: | < 1W |
Interface: | USB (standard), RS232 (option) – incl. data transmission cable 1 m |
Analogue voltage output (option): | 0-2V / 0-5V / 0-10V |
Climatic conditions
Operating temperature: | +15 ~ +45 °C |
Storage temperature: | –20 ~ +60 °C |
Operating pressure: | 800 ~ 1200 hPa (mbar) |
Ambient humidity: | 0 ~ 95% rel. humidity // Condensing inside of sensor must be prevented! |
* Analysis of CnHm*
The calibration of sensors for CnHm will be performed with propane. Aromatic hydrocarbons are also measured but with a different weighting. This means that the sensitivity of the sensor is significantly smaller with these gases than with other hydrocarbons.
Tabela de faixas de medição
Faixas de medição / Valor total da escala (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 | Faixas de medição sob consulta |
Módulo infravermelho NDIR Módulo ultravioleta NDUV Módulo ultravioleta NDUV / UVRAS
* Calibração com Propano
Table of Detection Limits (= 3 σ) in Percent of Full Scale
Limites de detecção / % do valor total da escala (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 | Faixas de medição sob consulta |
Módulo infravermelho NDIR Módulo ultravioleta NDUV Módulo ultravioleta NDUV / UVRAS
* Calibração com Propano
Definição de limite de detecção
O Limite de Detecção é o menor valor de medição que pode ser obtido com uma incerteza específica. Esta incerteza inclui a resolução, ruído e estabilidade do sensor de gás para um gás específico e uma faixa de medição específica. Para avaliação do valor limite de detecção, várias medições individuais são feitas nas mesmas condições de medição. Com os resultados de medição única obtidos, é calculado o desvio padrão "Sigma" (σ). Os valores indicados na tabela são iguais ao triplo valor de Sigma.
Recalibrations
The following recalibration intervals are recommended for IR sensors:
Ultraviolet Sensors
Descrição
The RITTER »MultiGas« UV sensor is the world’s first gas analysis module based on miniaturized UV-LEDs. The stability and lifetime of these UV-LEDs enables high-precision gas analyses down to the ppm range. By using two UV-LEDs two gases can be detected simultaneously. Furthermore, with this approach measuring ranges from ppm to Vol.-% can be realized.
In the spectral range from 200 nm to 500 nm, nitrogen oxides (NO + NO2), aromatic hydrocarbons, hydrogen sulphide, ozone, sulphur dioxide and chlorine can be reliably detected with this new sensor platform.
The entire unit can be disassembled for easy maintenance/service.
The individual internal modules are sealed by means of O-ring connections.
In order to achieve an optimum adaptation to the required measuring range, the lengths of the modular measurement cells (= cuvettes) can be implemented in the range of 5 mm (large measurement range in percentage level) up to 250 mm (small measurement range in ppm level).
Cuvettes with a length ≥ 20 mm are coated with a resistant gold layer in order to improve the reflection properties for low concentration level detection. Cuvettes used with aggressive gases are gold-coated as well.
The internal mechanical parts are made out of aluminium, optionally out of stainless steel.
For fast response applications the measuring system delivers a stable result within t90 ≈ 1-2 seconds.
Aplicativos
Specifications NDUV Sensor
General features
Measurement technology: | Innovative NDUV Sensor (non-dispersive ultraviolet sensor) |
Detectable gases: |
O3 CL2 H2S SO2 NO2
|
Number of simultaneously detectable gases: | max. 2 |
Measurement ranges: | See below |
Flow rate range: | 1 ltr/d ~ 300 ltr/h – For higher flow rates the sensor can be operated in bypass |
Max. gas inlet pressure: | 300 mbar |
Pressure loss (without additional optional sensors): | 10 @ 100 / 35 @ 200 / 70 @ 300 (mbar @ ltr/h) |
Temperature compensation: | Yes |
Data acquisition software: | Yes |
Lifetime of UV radiation source: | > 8 000 h |
Measurement cuvette: | Stainless steel with silicone coating inside |
Cuvette sealing: | Viton O-ring |
Caixa: | High-quality table-top casing, aluminium |
Dimensions (W x H x L): | 464 x 189 x 305 mm |
Peso: | approx. 6.5+ kg |
Gas connections: | PVDF screw-type tube connection for tube Øi 4mm, Øo 6 mm |
Measuring response
Linearity error: | < ± 1% F.S. |
Repeatability: | ± 0.5% F.S. |
Long term stability zero N2: | < ± 1% F.S. / 24h |
Long term stability span: | < ± 1% F.S. / month |
Temperature influence of zero point: | < 1% F.S. / 10K |
Temperature influence of span: | < 2% F.S. / 10K |
Cross sensitivity: | < 2% F.S. |
Pressure influence: | < 1.5% / 10hPa of reading[/wpml-string] |
Warm-up time: | 1 min (initial), <60 min for full specification |
Response time (t90): | 1.5 – 15 sec[/wpml-string] |
Sampling frequency by software: | ≤ 10 Hz |
Detection limit: | See below |
Resolution: | 0.5 x detection limit |
Electrical features
Power supply: | 24 VDC incl. power plug[/wpml-string] 100 ~ 240 VAC / 24 VDC |
Supply current (peak[/wpml-string]) | <0.4 A |
Average power consumption | < 7.5 W |
Interface: | USB (standard), RS232 (option) – incl. data transmission cable 1 m |
Analogue voltage output (option[/wpml-string]): | 0-2V / 0-5V / 0-10V |
Climatic conditions
Operating temperature: | +25 ~ +45 °C |
Storage temperature: | –20 ~ +60 °C |
Operating pressure: | 800 ~ 1200 hPa (mbar) |
Ambient humidity: | 0 ~ 95% rel. humidity // Condensing inside of sensor must be prevented! |
Specifications H2S Sensor
The H2S sensor works according to the principle of non-dispersive UV absorption (NDUV).
The measuring wavelength used is in the lower nanometer range, which enables inter-ference-free measurements with water vapour and hydrocarbons. This makes the sensor ideal for use in biogas measurements, as accompanying gases such as NH3, CO2, CH4 and H2O do not affect the accuracy of the measurements.
General features
Measurement technology: | Innovative NDUV Sensor (non-dispersive ultraviolet sensor) Dual beam |
Detectable gases: |
H2S SO2
|
Number of simultaneously detectable gases: | max. 2 |
Measurement ranges: | See below |
Flow rate range: | 6 ~ 300 ltr/h – For higher flow rates the sensor can be operated in bypass |
Max. gas inlet pressure: | 300 mbar |
Pressure loss (without additional optional sensors): | 10 @ 100 / 35 @ 200 / 70 @ 300 (mbar @ ltr/h) |
Temperature compensation: | Yes |
Data acquisition software: | Yes |
Lifetime of UV radiation source: | > 8 000 h |
Measurement cuvette: | Stainless steel with silicone coating inside |
Cuvette sealing: | Viton O-ring |
Caixa: | High-quality table-top casing, aluminium |
Dimensions (W x H x L): | 464 x 189 x 305 mm |
Peso: | approx. 6.5+ kg |
Gas connections: | PVDF screw-type tube connection for tube Øi 4mm, Øo 6 mm |
Measuring response
Linearity error: | < ± 1% F.S. |
Repeatability: | ± 0.5% F.S. |
Long term stability zero N2: | < ± 1% F.S. / 24h |
Long term stability span: | < ± 1% F.S. / month |
Temperature influence of zero point: | < 1% F.S. / 10K |
Temperature influence of span: | < 2% F.S. / 10K |
Cross sensitivity: | < 2% F.S. |
Pressure influence: | < 1.5% / 10hPa of reading |
Warm-up time: | 1 min (initial), < 15 min for full specification |
Response time (t90): | 1.5 – 15 sec |
Sampling frequency by software: | ≤ 10 Hz |
Detection limit: | See below |
Resolution: | 0.5 x detection limit |
Electrical features
Power supply: | 24 VDC incl. power plug 100 ~ 240 VAC / 24 VDC |
Supply current (peak): | <0.4 A |
Average power consumption: | < 7.5 W |
Interface: | USB (standard), RS232 (option) – incl. data transmission cable 1 m |
Analogue voltage output (option): | 0-2V / 0-5V / 0-10V |
Climatic conditions
Operating temperature: | +5 ~ +45 °C |
Storage temperature: | –20 ~ +60 °C |
Operating pressure: | 800 ~ 1200 hPa (mbar) |
Ambient humidity: | 0 ~ 95% rel. humidity // Condensing inside of sensor must be prevented! |
Specifications UVRAS Sensor
For the detection of NO an EDL (electrodeless gas discharge lamp) is used. In the EDL, N2 and O2 are converted to NO and produce a selective UV radiation. With this radiation, a cross-sensitivity-free NO measurement is made possible. This method is called UV resonance absorption spectroscopy (UVRAS).
A combination of both the UVRAS and NDUV technology allows the simultaneous gas analysis of NO, NO2 and SO2 in the lower ppm range which is particularly important in flue gas analysis (Continuous Emission Monitoring, CEM).
General features
Measurement technology: | Innovative NDIR Sensor (non-dispersive infrared sensor) |
Detectable gases: |
SO2 NO2 NO
|
Number of simultaneously detectable gases: | max. 3 per sensor unit |
Measurement ranges: | See below |
Flow rate range: | 1 ltr/d ~ 300 ltr/h – For higher flow rates the sensor can be operated in bypass |
Max. gas inlet pressure: | 300 mbar |
Pressure loss (without additional optional sensors): | 10 @ 100 / 35 @ 200 / 70 @ 300 (mbar @ ltr/h) |
Temperature compensation: | Yes |
Data acquisition software: | Yes |
Lifetime of IR radiation source: | > 40 000 h |
Measurement cuvette: | Aluminium, with measurement ranges ≤1% gold-plated inside |
Cuvette sealing: | Viton O-ring |
Caixa: | High-quality table-top casing, aluminium |
Dimensions (W x H x L): | 171 x 86 x 290 mm |
Peso: | approx. 2 kg |
Gas connections: | PVDF screw-type tube connection for tube Øi 4mm, Øo 6 mm |
Measuring response
Linearity error: | < ± 1% F.S. |
Repeatability: | ± 0.5 % F.S. |
Long term stability zero N2: | < 3 ppm / 24h |
Long term stability span: | < ± 1 % F.S. / month |
Temperature influence of zero point: | < 1 % F.S. / 10 K |
Temperature influence of span: | < 2 % F.S. / 10 K |
Cross sensitivity: | |
Pressure influence: | < 1.5% / 10 hPa of reading |
Warm-up time: | 1 min (initial), < 60 min for full specification |
Response time (t90): | 1.5 ~ 15 sec |
Sampling frequency by software: | ≤ 10 Hz |
Detection limit: | See below |
Resolution: | 0.5 x detection limit |
Electrical features
Power supply: | 24 VDC incl. power plug 100 ~ 240 VAC / 24 VDC |
Supply current (peak): | 1.5 A |
Inrush current: | 0.2 ~ 0.7 A |
Power consumption: | 36 W |
Interface: | USB (standard), RS232 (option) – incl. data transmission cable 1 m |
Analogue voltage output (option[/wpml-string]): | 0-2V / 0-5V / 0-10V |
Climatic conditions
Operating temperature: | +5 ~ +40 °C |
Storage temperature: | –20 ~ +60 °C |
Operating pressure: | 800 ~ 1200 hPa (mbar) |
Ambient humidity: | 0 ~ 95% rel. humidity // Condensing inside of sensor must be prevented! |
Tabela de faixas de medição
Faixas de medição / Valor total da escala (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 | |
O3 | |||||||||||||||
CL2 | |||||||||||||||
H2S | |||||||||||||||
SO2 | |||||||||||||||
NO2 | |||||||||||||||
NO |
Módulo infravermelho NDIR Módulo ultravioleta NDUV Módulo ultravioleta NDUV / UVRAS
* Calibração com Propano
(1) Full Scale (FS)
Other ranges on request
Table of Detection Limits (= 3 σ) in Percent of Full Scale
Limites de detecção / % do valor total da escala (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 | |
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% |
Módulo infravermelho NDIR Módulo ultravioleta NDUV Módulo ultravioleta NDUV / UVRAS
* Calibração com Propano
Definição de limite de detecção
O Limite de Detecção é o menor valor de medição que pode ser obtido com uma incerteza específica. Esta incerteza inclui a resolução, ruído e estabilidade do sensor de gás para um gás específico e uma faixa de medição específica. Para avaliação do valor limite de detecção, várias medições individuais são feitas nas mesmas condições de medição. Com os resultados de medição única obtidos, é calculado o desvio padrão "Sigma" (σ). Os valores indicados na tabela são iguais ao triplo valor de Sigma.
1) Zero to Full Scale (FS)
Recalibrations
The following recalibration intervals are recommended for UV sensors:
Opções (installed inside of the sensor casing)
8.1. Sensor de oxigênio
O sensor de oxigênio é um módulo de sensor disponível como opção, além de um sensor NDIR ou NDUV MultiGas RITTER. A concentração de oxigênio medida é exibida no software fornecido. Há duas versões disponíveis:
a) Especificações para gases não agressivos
Tecnologia de medição: | Sensor eletroquímico |
Faixas de medição (Versão padrão): | 0 – 25% or 0 – 100% |
Precisão da medição: | ±2% de extensão (escala completa) |
Resolução: | < 0.5% de extensão (escala completa) |
Tempo de resposta (t90): | ≈ 15 s; versão automotiva ≈ 5 s |
Tempo de vida: | aprox. 5 anos |
b) Especificações para H2S e gases ácidos similares
Tecnologia de medição: | Sensor eletroquímico |
Faixas de medição (H2S versão resistente): | 0.5 – 35% |
Precisão da medição: | ±2% de extensão (escala completa) |
Resolução: | < 0.5% de extensão (escala completa) |
Tempo de resposta (t90): | ≈ 15 s; versão automotiva ≈ 5 s |
Tempo de vida: | aprox. 5 anos |
8.2. Sensor de pressão
Uma mudança na pressão do gás causa uma mudança no número de moléculas por volume e, portanto, uma mudança na densidade do gás. Esta mudança na densidade, por sua vez, tem uma influência significativa no resultado da medição da concentração pelo sensor. Ao medir a pressão de gás dentro da célula da amostra (cubeta), o valor da medição da concentração é compensado / corrigido.
O sensor de pressão é um módulo sensor disponível como opção, além de um sensor RITTER MultiGas NDIR ou NDUV. O valor da pressão medida é exibido no software fornecido. Há duas versões disponíveis:
a) Especificações para gases não agressivos
Faixa de medição: | 800 – 1,200 mbar abs. |
Precisão da medição: | ±1% de extensão (escala completa) |
Resolução: | <1 mbar |
Tempo de resposta (t90): | 1 s |
Incl. compensação de temperatura |
b) Especificações para H2S e gases ácidos similares
Faixa de medição: | 0.2 – 3.5 bar abs. |
Precisão da medição: | ±1% de extensão (escala completa) |
Resolução: | 2 mbar |
Tempo de resposta (t90): | 1 s |
Incl. compensação de temperatura |
8.3. Sensor de Umidade
O sensor de umidade é um módulo sensor disponível como opção, além de um sensor RITTER MultiGas NDIR ou NDUV. Os valores de umidade medida (absoluta e relativa) são exibidos no software fornecido.
Especificações
Tecnologia de medição: | Sensor de umidade polimérica |
Faixa de medição: | 0-100% rH |
Precisão da medição: | ±2% rH de extensão (escala completa) |
Resolução: | ±1% RH |
Tempo de resposta (t90): | 12 s |
Incl. compensação de temperatura | |
Valores indicados (em software): | absoluto (% absH) e umidade relativa (% rH) |
8.4. Tensão analógica de saída
Para conexão a um dispositivo analógico de aquisição de dados, a porta analógica de saída de tensão fornece, alternativamente, os seguintes níveis de tensão:
A faixa de tensão é predefinida de acordo com a ordem e não pode ser alterada pelo usuário.
O módulo de saída de tensão analógica permite a saída simultânea de até 4 valores diferentes em 4 canais separados:
Por favor, observe: As atribuições das respectivas medições de concentração de gás para os respectivos canais. Essas atribuições estão indicadas no Protocolo de Calibração da unidade sensora.
Atribuição de contatos aos canais das medidas de concentração de gás no soquete e no plugue da Saída de Tensão Analógica:
Nº de contato | Atribuição ao canal | Cores do Cabo de Fio |
---|---|---|
1 | canal 1 | branco |
2 | canal 2 | verde |
3 | canal 3 | amarelo |
4 | canal 4 | cinza |
5 | massa | marrom |
O cabo de conexão é entregue com fios abertos para ser conectado ao dispositivo analógico de aquisição de dados do usuário.
8.5. Aquecimento e termostato da carcaça do sensor
Para evitar a condensação de gás úmido dentro do sensor, a carcaça do sensor pode ser aquecida e termostato. Como padrão, o controlador de temperatura é pré-ajustado para 50°C; temperaturas mais baixas são possíveis mediante solicitação.
O elemento de aquecimento e o controlador de temperatura são montados no suporte da cubeta de medição.
Especificações
Controlador de temperatura | 30-50°C |
Precisão do controle | ± 0,2 K |
Poder de aquecimento | 12 Watt / 30 Watt com elemento de aquecimento externo |