ADC BioScientific has developed the SRS series, the SRS-1000 and SRS-2000, two truly portable soil respiration systems that offer researchers superior performance for a variety of applications including spatial distribution studies.

The SRS-1000 is a truly portable soil respiration measurement system.

The ultra compact design, weighing only 2kg, makes the SRS-1000 suitable for even the most remote field locations. It will work continuously for up to 10 hours from a single battery charge.

It is light enough to be carried by a shoulder strap or even worn on a belt.

Working in an “Open system” operational mode means that the SRS-1000 provides highly accurate analysis in both low and high activity soils.

A graphical display allows easy monitoring of soil flux trends and the real time plotting of experimental curves.

The SRS-2000 features additional facilities for more sophisticated soil flux experiments.

Both CO2 and H2O can be automatically controlled inside the chamber. They can be controlled at single concentrations or automatically at sequential levels.

This allows soil flux to be determined at different CO2 concentrations, whilst the ability to dry air within the chamber prevents condensation occurring when working with soils of high moisture content.

For working with soils with extremely high levels of CO2 flux an extended 0-3000ppm CO2 range is provided with the SRS-2000.

The SRS-2000 features a number of expanded graphical functions further enhancing the versatility and interactivity of the system.

Despite these additional features the SRS-2000 weighs only 4.4kg and will work continuously for up to 16 hours from a single charge.

• Lightweight and compact
• 16 hour battery charge life
• Insensitive to wind
• Almost unlimited data storage
• Integral CO2 chamber analyzer
• Graphical display
• Humidity control for wet soils
• Can be used with either PVC or stainless soil collars

SRS-1000

         Wflux (mmol m-2 s -1 Soil water vapor flux

         Ce (µmol s-1) Soil respiration

         NCER (µmol m-2 s-1) Net Carbon Exchange Rate

         CO2 – 0 – 2000 ppm, 1 ppm resolution, IRGA Measurement

         H2O – 0 -75 mbars, 0.1 mbar resolution, laser trimmed moisture sensors

         PAR – 0 – 3000 µmol m-2 sec-1, silicon photocell

         Soil Temp – -5oC to 50oC, Thermistor soil temperature probe

         Flow rate – 68 to 340 µmol m-2 s-1

SRS-2000

         Wflux (mmol m-2 s -1Soil water vapor flux

         Ce (µmol s-1) Soil respiration

         NCER (µmol m-2 s-1) Net Carbon Exchange Rate

         Automatic CO2  response curves

         Sequential control levels and dwell time control

         Controls chamber CO2 levels up to 2,000 ppm

         Controls chamber H2O levels above and below ambient

         CO2 – 0 – 3000 ppm, 1 ppm resolution, IRGA Measurement

         H2O – 0 -75 mbars, 0.1 mbar resolution, laser trimmed moisture sensors

         PAR – 0 – 3000 µmol m-2 sec-1, silicon photocell

         Soil Temp – -5oC to 50oC, Thermistor soil temperature probe

         Flow rate – 68 to 340 µmol m-2 s-1

Gas exchange:

CO2:

Infrared gas analyzer 1ppm resolution

SRS-SD1000 0-2000ppm

SRS-SD2000 0-3000ppm

H2O:

0-75mbar, 0.1mbar resolution Two fast response water sensors

Other sensors:

Chamber temperature:

0oC to 50oC. Precision thermistor

Soil temperature:

5oC to 50oC. Precision thermistor

PAR:

0-3000 μmols/m2 sec silicon photocell

Automated environmental control:
(SRS-SD2000 only):

Programming:

Automatic and independent control of CO2 and H2O within the soil chamber. Single and sequential control levels.

CO2:

Up to 2000ppm by integral elevated CO2 supply system.

H2O:

Above and below ambient conditions by on-board self indicating conditioning chemicals.

Flow rate to chamber:

0-500 ml/min

Warm up time:

5 minutes @ 20oC

Display:

Graphic display 240 x 64 super twist LCD

Recorded data:

Removable SD cards typically store 16 million sets of data on a 1Gb card

Data output:

Direct from SD cards and via USB

Battery:

SRS-SD1000 2.6Ah lead acid 12V battery. 10 hr battery life

SRS-SD2000 6.8Ah lead acid 12V battery. 16 hr battery life

Battery charger:

90-260V, 50/60Hz

Operating temperature range:

5oC to 45oC

Console:

Dimensions

SRS1000-SD 230 x 110 x 140cm

SRS2000-SD 230 x 110 x 170cm

Weight:

SRS-SD1000 2.4kg

SRS-SD2000 4.4kg

Chamber construction:

Collar stainless steel Upper chamber cast Acrylic

Volume:

1 liter

Diameter:

130mm

Height:

Collar 75mm

Upper chamber 70mm

Weight:

Collar 325g

Upper chamber 320g