The purpose of the contract is the acquisition (including installation and commissioning) of instruments and their accessories to analyze ambient air quality for the fixed network of ambient air quality monitoring in Wallonia. The targeted compounds are: ozone, nitrogen oxides, suspended particles (PM10; PM2.5). These supplies fall under the CPV code: 38432000 Enumeration (and possible details) of the services to be executed: - delivery - assembly/installation - commissioning - training - after-sales service Lots: The contract is divided into lots. Lot 1: Reference analyzer for ozone (O3) according to standard NBN EN 14625:2024, 18 analyzers. The technical references of these analyzers are detailed in the technical clauses of this special specifications document. Lot 2: Reference analyzer for nitrogen oxides (NO2, NO, and NOx) according to standard NBN EN 14211:2024, 26 analyzers. The technical references of these analyzers are detailed in the technical clauses of this special specifications document. Lot 3: Analyzer for suspended particles PM10 and PM2.5 and their accessories according to standard NBN EN 16450:2017, 30 analyzers, useful accessories. The technical references of these analyzers and their accessories are detailed in the technical clauses of this special specifications document. You can submit an offer for multiple lots. All lots can be awarded to you. You may propose discounts or improvements if multiple lots are awarded: YES. Variants: This contract does not include any authorized, required, or free variants. You cannot introduce a variant. Free variants are prohibited. Any proposed variants will not be considered. Options: This contract does not include any authorized, required, or free options. You cannot introduce an option. Free options are prohibited. Any proposed options will not be considered. Tranches: For each of the three lots, the contract is divided into tranches. The firm or conditional nature of the tranches depends on the certainty of their order by the contracting authority. The conclusion of the contract covers the entire contract but only commits the contracting authority for the firm tranches. The firm tranches are ordered at the time of the contract notification. The conditional tranche(s) may be ordered later, but the contracting authority is not obliged to do so. The contract includes the following firm tranches: Lot 1: Reference analyzer for ozone (O3) according to standard NBN EN 14625:2024, purchase of 16 analyzers. Lot 2: Reference analyzer for nitrogen oxides (NO2, NO and NOx) according to standard NBN EN 14211:2024, purchase of 22 analyzers. Lot 3: Analyzer for suspended particles PM10 and PM2.5 and their accessories according to standard NBN EN 16450:2017, purchase of 26 analyzers, useful accessories. The contract includes the following conditional tranches: Lot 1: Reference analyzer for ozone (O3) according to standard NBN EN 14625:2024, purchase of 2 additional analyzers. Lot 2: Reference analyzer for nitrogen oxides (NO2, NO and NOx) according to standard NBN EN 14211:2024, purchase of 4 additional analyzers. Lot 3: Analyzer for suspended particles PM10 and PM2.5 and their accessories according to standard NBN EN 16450:2017, purchase of 4 additional analyzers and their useful accessories. The order for the conditional tranche(s) will be sent by the contracting authority under the following conditions: identical to the order of the analyzers related to the firm tranches.

LOT-0001
1
Lot 1: Reference analyzer for ozone (O3) according to standard NBN EN 14625:2024, 18 analyzers. The technical references of these analyzers are detailed in the technical clauses of this special specifications document..
Measurement principle: Method of reference specified in directive 2024/2881 and according to specific standard NBN EN 14625:2024.

Performance: The model of the analyzer must comply and have passed all type approval tests (in laboratory and on-site) defined in standard NBN 14625:2024.

Moreover, it must comply with the quality conformity "QAL1" according to but according to standard EN 15267-1: 2023 (standard EN 15267-1 (2009) having been officially withdrawn.)

Thus, the model of the equipment must be listed on the site https://qal1.de/en/main-navigation/start/ and have a valid certificate of conformity.

The device must comply with the safety standards in force in the European Union.

The analyzer must be equipped:
- with a power supply: 230 VAC - 50 Hz
- with a display screen: for reading concentrations, alarms, and operating parameters, graphical, etc.
- with pressure and temperature sensors: to allow automatic correction of measurements in CNTP.
- with internal solenoid valves that can be controlled remotely: "zero", "span" and "sample" pathways.
- with an internal zero-air generation system: to allow automatic checks at zero
- with an internal ozone generation system: to allow automatic checks at the scale point (span).
- with pipe fittings: adapted for tubing with an outer diameter of 6 mm.
- with a 19'' rack mounting system.
- with RS-232 and RJ45 (IP) communication ports.
- with an input filter on the sample path which will be placed in front of the cycle solenoid valves to protect them from dust

Especially concerning the data recording system and transmission to an external acquisition system:

The equipment must be able to record data on its internal memory.

But above all, the analyzer will be 100% compatible with the data acquisition system of the ENVEA brand (including all products of the ENVEA "XR" range. E.g.: SAM LITE, SAM LX, etc.).

The dedicated protocol will allow for the acquisition of data, technical parameters, all defects, and all alarms as well as the sending of commands to enable automatic checks via "zero" and "span" paths.

This protocol must be available in IP (RJ45 port) as well as in RS (RS-232) and will be fully operational. Therefore, it must be listed in the list of digital protocols developed by ENVEA.

This ENVEA catalogue is available to the ISSeP and these aspects will be verified.

The successful bidder must also provide:
- installation in 19'' racks of the measurement stations, commissioning and connection to the data acquisition system (ENVEA);
- a one-day training for eight people presenting the analyzer, its operation, its use, its main failures, its preventive maintenance, etc.;
- the operating manual in 2 copies in French or English including:
 the fluid circuit of the analyzer;
 the technical characteristics;
 the communication protocol (RS / IP);
 the description of normal operations;
 the description of the operation of internal elements
 the description of the mounting of spare parts;
 the schematic diagrams of the electronic circuits;
 the troubleshooting check list;
 the list of spare parts;
 the description of preventive and corrective maintenance.
- the control sheet with tested parameter values from the manufacturer before the device is shipped.

LOT-0002
2
Lot 2: Reference analyzer for nitrogen oxides (NO2, NO and NOx) according to standard NBN EN 14211:2024, 26 analyzers. The technical references of these analyzers are detailed in the technical clauses of this special specifications document..
Measurement principle: Method of reference specified in directive 2024/2881 and according to specific standard NBN EN 14211:2024.

Performance: The model of the analyzer must comply and have passed all type approval tests (in laboratory and on-site) defined in standard NBN 14211:2024.

Moreover, it must comply with quality conformity "QAL1" according to standard EN 15267-1: 2023 (standard EN 15267-1 (2009) having been officially withdrawn.)

Thus, the model of the equipment must be listed on the site https://qal1.de/en/main-navigation/start/ and have a valid certificate of conformity.

The device must comply with the safety standards in force in the European Union.

The analyzer must be equipped:
- with a power supply: 230 VAC - 50 Hz
- with a display screen: for reading concentrations, alarms, and operating parameters, graphical, etc.
- with pressure and temperature sensors: to allow automatic correction of measurements in CNTP.
- with internal solenoid valves that can be controlled remotely: "zero", "span" and "sample" pathways.
- with an internal zero-air generation system: to allow automatic checks at zero.
- with an internal system allowing the injection of a control gas under pressure to enable automatic checks at the scale point (span). Thus, a control/regulation element must be present for the gas injection ("span" path). For example, this regulation will be carried out by critical orifice or manually via a rotameter.
- with pipe fittings: adapted for tubing with an outer diameter of 6 mm.
- with a 19'' rack mounting system.
- with RS-232 and RJ45 (IP) communication ports.
- with an input filter on the sample path placed in front of the cycle solenoid valves to protect them from dust

Especially concerning the data recording system and transmission to an external acquisition system:

The equipment must be able to record data on its internal memory.

But above all, the analyzer will be 100% compatible with the data acquisition system of the ENVEA brand (including all products of the ENVEA "XR" range. E.g.: SAM LITE, SAM LX, etc.).

The protocol allows for the acquisition of data, technical parameters, all defects, and all alarms as well as the sending of commands to enable automatic checks via "zero" and "span" pathways.

This protocol must be available in IP (RJ45 Ethernet) as well as in RS (RS-232) and will be fully operational. Therefore, it must be listed in the list of digital protocols developed by ENVEA.

This ENVEA catalogue is available to the ISSeP and these aspects will be verified.

The successful bidder must also provide:
- installation in 19'' racks of the measurement stations, commissioning and connection to the data acquisition system (ENVEA SAM)
- a one-day training for eight people presenting the analyzer, its operation, its use, its main failures, its preventive maintenance, etc.;
- the operating manual in 2 copies in French or English including:
 the fluid circuit of the analyzer;
 the technical characteristics;
 the communication protocol (RS / IP);
 the description of normal operations;
 the description of the operation of internal elements
 the description of the mounting of spare parts;
 the schematic diagrams of the electronic circuits;
 the troubleshooting check list;
 the list of spare parts;
 the description of preventive and corrective maintenance.
- the control sheet with tested parameter values from the manufacturer before the device is shipped.

LOT-0003
3
Lot 3: Analyzer for suspended particles PM10 and PM2.5 and their accessories according to standard NBN EN 16450:2017, 30 analyzers, useful accessories. The technical references of these analyzers and their accessories are detailed in the technical clauses of this special specifications document..
Measuring Principle :
Measurement optical method.
Any other measuring principle (e.g. beta radiation, microbalance) will not be accepted.

The proposed measurement method must be acknowledged and demonstrated to be equivalent to the reference method according to the specific standard NBN EN 16450:2017. The measurement of PM10 and PM2.5 fractions must be carried out simultaneously by the same instrument.

Performance :
The analyzer model must be compliant and must have passed all type approval tests (in the laboratory and on-site) defined in standard NBN 16450:2017.

Additionally, it must meet quality compliance "QAL1" according to the standard EN 15267-1:2023 (the standard EN 15267-1 (2009) has been officially withdrawn.)

Consequently, the equipment model must be listed on the site https://qal1.de/en/main-navigation/start/ and hold a valid certificate of compliance.

The equipment must also be included in the list of compliant devices for regulatory air quality measurement defined and published by LCSQA (Laboratoire Central de Surveillance de la Qualité de l’Air, France) as per the update of 09/07/2025.

The device must comply with safety standards in force within the European Union.

The analyzer must be equipped with:
- A power supply: 230 VAC – 50 Hz
- A display screen: for reading concentrations, alarms, and operating parameters, graphical, …
- Pressure and temperature sensors: to allow for automatic correction of measurements in standard conditions.
- A relative humidity sensor present in the sampling flow to control the humidity of the analyzed aerosol.
- A mounting system for 19’’ racks.
- Communication ports of type RS-232 and RJ45 (IP).

Particularly regarding the data recording and transmission system to an external acquisition system:

The equipment must be able to record data on its internal memory.

Moreover, the analyzer will be 100% compatible with the data acquisition system from the brand ENVEA (including all products from the ENVEA “XR” range, e.g. SAM LITE, SAM LX, etc.).

The protocol allows for data acquisition, technical parameters, all defects and all alarms as well as sending commands for automatic controls via the “zero” and “span” channels.

This protocol must be available in IP (RJ45 ethernet) as well as in RS (RS-232) and will be fully operational. Therefore, it must be listed in the list of digital protocols developed by ENVEA.

This ENVEA catalog is made available to ISSeP and these aspects will be verified.

The contractor must also provide:
- all equipment necessary for the installation of the analyzer on site (cable gland, sealing system, screws, etc.);
- installation in 19’’ racks of the measurement stations, commissioning and connecting to the data acquisition system (ENVEA SAM);
- a one-day training for eight people presenting the analyzer, its functioning, its use, its main failures, its preventive maintenance, etc.;
- the user manual in 2 copies in French and potentially at least one other language, for example in English, including:
 the fluid circuit of the analyzer;
 the technical characteristics;
 the communication protocol (RS / IP);
 the description of normal operations;
 the description of the functioning of internal components;
 the description of the assembly of spare parts;
 the schematics of electronic circuits;
 the troubleshooting list;
 the list of spare parts;
 the description of preventive and corrective maintenance.
- the control sheet with the original parameter values tested by the manufacturer before shipping the device.

The contractor must also provide the following technical accessories:
- a maintenance kit for normal operation during a period of two years.
- a portable control kit intended for the field to guarantee the quality of the optical measurement of the analyzer.
- a flow control kit intended for the field,
- a circuit sealing control kit intended for the field,
- a weather probe control and/or calibration kit,
- a kit allowing for an "air zero" check intended for the field.