1 General Specifications
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 可选配件 (installed inside of the sensor casing)

General Specifications

1.1. Casing Types

类型 3

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 4_i / 6_o mm	PVDF screw-type tube connection for tube Ø 4_i / 6_o mm
Interfaces	USB ( Standard) / RS232 ( Option)	USB ( Standard) / RS232 ( Option)
Power	24 V DC	24 V DC

⁽¹⁾ May be larger with cuvettes for ppm measurement ranges
⁽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 C_nH_m^* CF₄ SF₆ H₂O	1
xxx = duo IR2	2742	CO₂ CO N₂O CH₄ C_nH_m^* CF₄ SF₆ H₂O	2
xxx = trio IR3	2743	CO₂ CO N₂O CH₄ C_nH_m^* 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 C_nH_m^* CF₄ SF₆ H₂O	1	O₃ Cl₂ ≤ 5% SO₂ NO₂	1
xxx = trio IR1 + UV2	na	CO₂ CO N₂O CH₄ C_nH_m^* CF₄ SF₆ H₂O	1	O₃ Cl₂ ≤ 5% SO₂ NO₂	2

^* Calibration with Propane

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 C_nH_m^* CF₄ SF₆ H₂O	1	H₂S	1
xxx = duo IR1 + (H₂S ≤1% / NO)	2960	CO₂ CO N₂O CH₄ C_nH_m^* CF₄ SF₆ H₂O	1	H₂S ≤ 1% NO	1

^* Calibration with Propane

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 C_nH_m^* CF₄ SF₆ H₂O	1
xxx = Mod IR2	2814	CO₂ CO N₂O CH₄ C_nH_m^* CF₄ SF₆ H₂O	2
xxx = Mod IR3	2815	CO₂ CO N₂O CH₄ C_nH_m^* 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

^* Calibration with Propane

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

⁽¹⁾ Casing type depends on the type and number of built-in sensor modules

Part 5 Built‐in Options

Option Type: RITTER MultiGas xxx	Article No.	Name	测量范围
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

⁽¹⁾ Casing type depends on the type and number of built-in sensor modules
⁽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 C_nH_m^* 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 C_nH_m^* 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-%

红外模块 NDIR 紫外线模块 NDUV 紫外线模块 NDUV / UVRAS

^* 用丙烷校准

Disadvantages of electrochemical (EC) sensors in comparison to the optical gas sensors RITTER »MultiGas«

EC sensors become “blind” over time and then display a constant value, usually zero. This suggests misleadingly a stable zero point.
EC sensors must therefore be replaced preventatively every 0.5 – 2 years, after replacement the sensor must be recalibrated, as the tolerances of EC sensors are relatively high. This causes supplementary additional costs.
With EC sensors, mutual influence and deterioration occur by different gases, e.g. NO₂ damages the SO₂ sensor and vice versa.
In many countries (e.g. in China) EC sensors are forbidden by law with governmental inspection and approval measurements, because they show too low values if they are contaminated or aged. The user then receives “false positive” values.
The lifetime of the EC cells is already reduced during storage; therefore, the storage should only be a few weeks.
The response time (t90) is relatively long compared to the optical measuring methods – mostly about 30 sec. Optical systems are in the range < 5 sec.
Due to the measuring principle of the EC sensors there is always a chemical reaction between the test gas and the sensor. By this reaction, small quantities of the test gas components are converted. For example, CO is converted into CO₂. With low quantities of test gas, measurements beyond the gas sensor can therefore be influenced because fewer CO molecules are present in the gas sample.

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.

请注意: 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 / 数据表 / 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 Ø_i 4mm/Ø_o 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
请注意： 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:
1. USB cable to the socket “USB”
2. RS232 cable to the socket “RS 232” (选项 )
Connect the gas source to the gas inlet port of the sensor by using the provided tubing as follows:
1. Unscrew the screw cap from the gas inlet port.
2. Slide the screw cap onto the end of the tube with the thread of the screw cap facing the tube end.
3. Push the tube onto the cone in the center of the gas inlet port.
4. Slide the screw cap to the gas inlet port and screw it hand-tightly in place.
如果适用：将传感器的气体出口连接到其他组件，例如气体采样袋、排气管等。
- 管与气体出口的连接以与上述相同的方式进行。
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

描述

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.

应用程序

Biogas / natural gas analysis
Environmental and Process Measurement
TOC analysers
Continuous Emission Monitoring (CEM)
Elemental analysis
Industrial gas analysis

Specifications

General features

Measurement technology:	Innovative NDIR Sensor (non-dispersive infrared sensor)
Detectable gases:	CO₂ CO N₂O CH₄ C_nH_m^* 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
套管:	High-quality table-top casing, aluminium
Dimensions (W x H x L):	171 x 86 x 290 mm
重量:	approx. 2 kg
Gas connections:	PVDF screw-type tube connection for tube Ø_i 4mm, Ø_o 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 (选项) – incl. data transmission cable 1 m
Analogue voltage output (选项):	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 C_nH_m^*

The calibration of sensors for C_nH_m 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.

测量范围表

	测量范围 / 满分值 (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
C_nH_m^*
CF₄
SF₆
H₂O	根据要求提供测量范围

红外模块 NDIR 紫外线模块 NDUV 紫外线模块 NDUV / UVRAS

^* 用丙烷校准

Table of Detection Limits (= 3 σ) in Percent of Full Scale

	检测限 / 满刻度值的百分比 (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%
C_nH_m^*	< 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	根据要求提供测量范围

红外模块 NDIR 紫外线模块 NDUV 紫外线模块 NDUV / UVRAS

^* 用丙烷校准

检测限的定义

检测极限是在特定的不确定度下可以获得的最小的测量值。这个不确定性包括气体传感器对特定气体和特定测量范围的分辨率、噪音和稳定性。为了评估检测极限值，需要在相同的测量条件下进行多次单次测量。根据获得的单次测量结果，计算出标准偏差 "Sigma"（σ）。表中给出的数值等于Sigma的三倍量。

Recalibrations

The following recalibration intervals are recommended for IR sensors:

Zero-point: Weekly with inert gas, e.g. Nitrogen
The recalibration of the zero point is described in the software manual.
End-point (full scale): Every 3 months with suitable calibration gas

Ultraviolet Sensors

描述

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.

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.

应用程序

Biogas / natural gas analysis
Environmental and Process Measurement
TOC analysers
Continuous Emission Monitoring (CEM)
Elemental analysis
Industrial gas analysis

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
套管:	High-quality table-top casing, aluminium
Dimensions (W x H x L):	464 x 189 x 305 mm
重量:	approx. 6.5+ kg
Gas connections:	PVDF screw-type tube connection for tube Ø_i 4mm, Ø_o 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
套管:	High-quality table-top casing, aluminium
Dimensions (W x H x L):	464 x 189 x 305 mm
重量:	approx. 6.5+ kg
Gas connections:	PVDF screw-type tube connection for tube Ø_i 4mm, Ø_o 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 (选项) – incl. data transmission cable 1 m
Analogue voltage output (选项):	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
套管:	High-quality table-top casing, aluminium
Dimensions (W x H x L):	171 x 86 x 290 mm
重量:	approx. 2 kg
Gas connections:	PVDF screw-type tube connection for tube Ø_i 4mm, Ø_o 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:	500 ppm NO₂ < 2 ppm 100 ppm SO₂ < 2 ppm 100 ppm N₂O < 10 ppm 20 °C D.P. H₂O < 10 ppm
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 (选项) – 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!

测量范围表

	测量范围 / 满分值 (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

红外模块 NDIR 紫外线模块 NDUV 紫外线模块 NDUV / UVRAS

^* 用丙烷校准

⁽¹⁾ Full Scale (FS)

Other ranges on request

Table of Detection Limits (= 3 σ) in Percent of Full Scale

	检测限 / 满刻度值的百分比 (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%

红外模块 NDIR 紫外线模块 NDUV 紫外线模块 NDUV / UVRAS

^* 用丙烷校准

检测限的定义

1) Zero to Full Scale (FS)

Recalibrations

The following recalibration intervals are recommended for UV sensors:

Zero-point:
- Concentrations < 300 ppm: Every 48 hours with inertgas, e.g. Nitrogen
- Concentrations ≥ 300 ppm: Every 24 hours with inertgas, e.g. Nitrogen
End-point (full scale): Every 3 months with suitable calibration gas

可选配件 (installed inside of the sensor casing)

8.1. 氧传感器

除了 RITTER MultiGas NDIR 或 NDUV 传感器之外，氧气传感器是一个可选的传感器模块。测得的氧气浓度显示在提供的软件中。有两个版本可用：

a) 非腐蚀性气体规范

测量技术:	电化学传感器
测量范围 (标准版本):	0 – 25% or 0 – 100%
测量精度:	±2% 跨度（满量程）
决议:	< 0.5% 跨度（满量程）
响应时间 (t90):	≈ 15 s; 汽车版 ≈ 5 s
终身:	约5年

Hier steht mein Test

b) H₂S和类似酸性气体的规格

测量技术:	电化学传感器
测量范围 (H₂S 耐用版本):	0.5 – 35%
测量精度:	±2% 跨度（满量程）
决议:	< 0.5% 跨度（满量程）
响应时间 (t90):	≈ 15 s; 汽车版 ≈ 5 s
终身:	约5年

8.2. 压力传感器

气体压力的变化导致每体积分子数的变化，从而导致气体密度的变化。这种密度变化反过来又对传感器的浓度测量结果有很大影响。通过测量样品池（比色皿）内的气体压力，对浓度测量值进行补偿/校正。

压力传感器是一个传感器模块，可作为RITTER MultiGas NDIR或NDUV传感器的附加选项。测量的压力值显示在提供的软件中。有两个版本可供选择。

a) 非腐蚀性气体规范

测量范围:	800 – 1,200 mbar 绝对的
测量精度:	±1% 跨度（满量程）
决议:	<1 mbar
响应时间 (t90):	1 s
	包括温度补偿

b) H₂S和类似酸性气体的规格

测量范围:	0.2 – 3.5 bar 绝对的
测量精度:	±1% 跨度（满量程）
决议:	2 mbar
响应时间 (t90):	1 s
	包括温度补偿

8.3. 湿度传感器

湿度传感器是一个传感器模块，可作为RITTER MultiGas NDIR或NDUV传感器的附加选项。测量的湿度值（绝对值和相对值）会在提供的软件中显示。

规格

测量技术:	聚合物湿度传感器
测量范围:	0-100% rH
测量精度:	±2% rH 跨度（满量程）
决议:	±1% RH
响应时间 (t90):	12 s
	包括温度补偿
指示值（在软件中）:	绝对的 (% absH) 和相对湿度 (% rH)

8.4. 模拟电压输出

对于与模拟数据采集设备的连接，模拟电压输出端口可提供以下电压水平。

0–2V
0–5V
0–10V

电压范围是根据订单预设的，用户不能改变。

模拟电压输出模块允许在4个独立的通道同时输出多达4个不同的数值。

3 x 气体浓度信号 (不包括氧传感器)
1 x 来自湿度传感器的湿度值

请注意：将各自的气体浓度测量值分配给各个通道。这些分配在传感器单元的校准协议中说明。

在模拟电压输出的插座和插头上为气体浓度测量的通道分配触点。

联系号码	分配给通道	电缆的电线颜色
1	渠道 1	白色
2	渠道 2	绿色
3	渠道 3	黄色
4	渠道 4	灰色
5	ground	棕色

连接电缆在交付时带有明线，可与用户的模拟数据采集设备连接。

8.5. 传感器外壳的加热和恒温处理

为了避免潮湿的气体在传感器内部凝结，可以对传感器外壳进行加热和恒温处理。作为标准配置，温度控制器预设为50°C；可根据要求提供更低的温度。

加热元件和温度控制器被安装在测量比色皿的支架上。

规格

温度控制器	30-50°C
控制精度	± 0,2 K
加热功率	12 Watt / 30 带外部加热元件的瓦特

General Specifications

1.1. Casing Types

1.2. Dimensions

1.3. Assignment of Sensor Types to possible Sensor Combinations

Part 1: Pre‐configured SensorsIncl. casing type 1 with gas connection fittings, data port, power supply Ready for use

Part 2: Pre‐configured SensorsIncl. casing type 2 with gas connection fittings, data port, power supply Ready for use

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

Part 4: Casings for Sensor Modules assembled according to Customer Specification

Part 5 Built‐in Options

Part 6: Accessories / Options

Disadvantages of electrochemical (EC) sensors in comparison to the optical gas sensors RITTER »MultiGas«

Preventive / Protective Measures regarding the Gas to be measured

Scope of Supply

Setup

Infrared Sensors

描述

应用程序

Specifications

General features

Measuring response

Electrical features

Climatic conditions

测量范围表

Table of Detection Limits (= 3 σ) in Percent of Full Scale

检测限的定义

Recalibrations

Ultraviolet Sensors

描述

应用程序

Specifications NDUV Sensor

General features

Measuring response

Electrical features

Climatic conditions

Specifications H2S Sensor

General features

Measuring response

Electrical features

Climatic conditions

Specifications UVRAS Sensor

General features

Measuring response

Electrical features

Climatic conditions

测量范围表

Table of Detection Limits (= 3 σ) in Percent of Full Scale

检测限的定义

Recalibrations

可选配件 (installed inside of the sensor casing)

8.1. 氧传感器

a) 非腐蚀性气体规范

b) H2S和类似酸性气体的规格

8.2. 压力传感器

a) 非腐蚀性气体规范

b) H2S和类似酸性气体的规格

8.3. 湿度传感器

8.4. 模拟电压输出

8.5. 传感器外壳的加热和恒温处理

Part 1: Pre‐configured Sensors
Incl. casing type 1 with gas connection fittings, data port, power supply Ready for use

Part 2: Pre‐configured Sensors
Incl. casing type 2 with gas connection fittings, data port, power supply Ready for use

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

Specifications H₂S Sensor

b) H₂S和类似酸性气体的规格

b) H₂S和类似酸性气体的规格