Optional accessories

Optional accessories may be included with your system. If not, they are available form LI-COR or your distributor.

6400-03 Rechargeable battery

The 6400-03 rechargeable batteries are 12 volt lead acid batteries. Batteries are charged prior to shipping, but may discharge during shipping and storage. It is a good idea to test your batteries to make sure they are charged.

The 6400-03 batteries require the LI‑6020 Battery Charger for recharging. One 6400-03 battery provides approximately 3-4 hours of battery life at 25 °C, depending on pump usage or wireless card usage.

NOTE: There are 2 battery connectors in the case. You can attach a second, fully charged battery before removing the discharged battery to provide uninterrupted operation.

LI‑6020 Battery charger

The LI‑6020 can charge up to four 6400-03 batteries at a time. It is compatible with 115 and 230 VAC main power.

Soil temperature probes

The Omega Soil Temperature Probe (6000-09TC) is a 2-wire thermocouple sensor that can be wired to the auxiliary sensor interface for survey measurements.

• See Connecting the Omega soil temperature probe to connect to the auxiliary sensor interface.

The 8100-203 and 8150-203 soil temperature probe has a 2-wire adapter cable for connection to the auxiliary sensor interface. Alternatively, the connector can be removed for installation into a long-term chamber when using the multiplexer.

• The 8100-203 is a bare wire thermistor used for single-chamber long term measurements. It connects to the auxiliary sensor interface (see Connecting the 8100-203 soil temperature probe).
• The 8150-203 thermistor probe has a plug for direct connection to the 8100-104/C Long Term Chambers when used with the multiplexer (see Connecting the 8150-203 soil temperature probe).

Soil moisture probes

The GS1 Soil Moisture Sensor (Decagon Devices, Inc., Pullman, WA) is a dielectric sensor that measures volumetric water content of the soil.

• The 8100-205 probe has a 3-wire connector for connection to the auxiliary sensor interface on the LI-8100A (see Connecting the GS1 soil moisture probe).
• The 8150-205 probe has a plug for direct connections to the 8100-104/C Long Term chambers when used with the multiplexer (see Connecting the GS1 soil moisture probe).

The ECH2O Model EC-5 soil moisture probe (Decagon Devices, Inc., Pullman, WA) is a dielectric sensor that measures volumetric water content of the soil.

• The 8100-202 probe has a 3-wire connector for connection to the auxiliary sensor interface on the LI-8100A (see Connecting the EC-5 soil moisture probe).
• The 8150-202 probe has a plug for direct connection to the 8100‑104/C Long Term chambers when used with the multiplexer (see Connecting the EC-5 soil moisture probe).

The Delta-T ThetaProbe is a more durable sensor that provides a more precise measurement of volumetric water content.

• The 8100-204 probe has bare wire leads, and is for use with the auxiliary sensor interface (see Connecting the Delta-T ThetaProbe).
• The 8150-204 probe has a connector pre-installed for direct connection to the 8100-104/C long-term chambers when used with the multiplexer (see Connecting the Delta-T ThetaProbe).

8100-104 and 8100-104C conversion kits

The 8100-104 long-term chamber’s opaque “bowl” can be swapped out with the clear bowl used on the 8100-104C long-term chamber (using part number 8100-910), and vice versa (using part number 8100-911). Each kit includes the replacement chamber bowl and all mounting hardware required.

Wireless communications package1 May not be available in all areas.

The wireless communications package (part number 8100-565) includes 8100-570 Apple iPod Touch (32 GB), serial cable (part number 392-10587), USB-to-RS232 adapter (part number 6400-27), wireless card (part number 8100-552), and iPod Micro Case (part number 8100-571).

GPS mapping kit

The mapping kit (part number 8100-405) is an accessory for use with the LI-8100A Automated Soil CO₂ Flux System when making survey measurements with the 8100-102 or 8100-103 chamber or for continuous measurements. The mapping kit adds geographical data (latitude, longitude, speed, and direction) to observations of soil CO₂ flux or CO₂ concentration. The mapping kit can be used with the survey chambers to map soil CO₂ flux data across the area of interest, or it can be used in a continuous measurement mode (without a chamber) to map CO₂ concentrations across a transect.

The mapping kit includes a GPS receiver (part number 9981-185), mounting bracket (part number 9981-211), 12-pin Eurofast splitter cable (part number 392-12388), and spare parts kit (part number 9981-186) with intake tube and connectors. See The GPS accessory for details.