The subject of the order is Supply of a system for gas exchange analysis from agricultural land using the vortex covariance method for the needs of the Institute of Agrophysics B. Dobrzański Polish Academy of Sciences in Lublin.

A detailed description of the subject of the order is attached as Annex 1 to this ToR.

Source of financing

- Project implemented under financial means for the purchase of science and research apparatus constituting a large research infrastructure for 2019 granted by the Minister of Science and Higher Education - targeted subsidy for the implementation of the investment named: "Purchase of a system for analysis of gas exchange from agricultural land using the vortex covariance method" .

The Contracting Authority reserves the possibility of canceling the tender based on art. 93 par. 1a of the Act of 29.1.2004 - Public Procurement Law (Journal of Laws of 2018, item 1986 as amended).

The subject of the contract includes:

1 CO analyzer 2 and H2O

1.1 Accuracy of reading in the range of 1-2%

1.2. Measures at a frequency of up to 20 Hz

1.3 Power consumption enabling operation in a field without 230V power supply

1.4. Minimum operating temperature range: -25 to 40 about C.

1.5 Cable length: minimum 5 m.

1.6. Mounting elements for mounting the sensor on the mast.

2 CH4 analyzer

2.1. Minimum measuring range 0 - 40 ppm

2.2 Power consumption enabling work in the field without 230V power supply

2.3. Enables measurement at 20 Hz or higher

2.4. Minimum operating temperature range: -25 to 40 about C.

2.5. Cable length: 5 m min.

2.6. Mounting elements for mounting the sensor on the mast.

3 Sonic anemometer with instrumentation and mimimum 5m cable

3.1. Minimum measuring range 0-45 m / s

3.2. Frequency of 3D measurement: 40 Hz

3.3 Minimum resolution: 0.01 m / s

3.4. Minimum operating temperature range: -30 to 40 about C.

3.5. Ability to communicate after RS-485

4 Solar radiation balance

4.1. The minimum spectral range from 0.3 to 2.8 μm for a ferry short-wave and 4.5-42 μm (for long-wave ferry)

4.2 Sensitivity 5-20 μV / W / m 2

5 Humidity and air temperature sensor with sun visors

5.1. Accuracy of RH measurement of 1.5% and accuracy of temperature measurement of 0.2C

5.2 Response time in the air 20-60s

6 Humidity, temperature and salinity sensors

7 Rain gauge

8 PAR radiation sensor

9 Datalogger for collecting data from individual sensors

10 System power supply elements (batteries, solar panel) and instrumentation allowing installation of sensors 2-4 m high above the field surface

11 Interface with software for determining gas streams from analyzers and statistical analysis of data from measuring devices

12 Minimum one-day training in assembling and operating the system for three people