Powered by the LI-8250 Multiplexer, each Extension Manifold allows multiple chambers or flasks to share a single LI-8250 port—extending the maximum number of chambers from 8 to 36.
Design Your SystemRedefine field research with a long-term soil gas flux research site that includes dozens of chambers distributed over a 2800 square meter footprint—more than 1/4 of a hectare. Additional data points and increased flexibility in site selection let you ask new research questions and have more confidence in the answers.
An Extension Manifold occupies just one port on your LI-8250 Multiplexer but connects to up to 8 chambers at once. A long-term soil gas flux system with 4 Extension Manifolds enables you to collect data from up to 36 separate chambers in various conditions, including treatments and controls.
The LI-8250 Multiplexer has 8 ports. Each multiplexer port can connect to either a chamber or an 8250-01 Extension Manifold. You can have a maximum of 4 extension manifolds connected to the LI-8250 Multiplexer.
Each extension manifold also has 8 ports that can connect to chambers. Since the extension manifold uses 1 multiplexer port, each extension manifold gains you up to 7 more chambers.
With 4 extension manifolds, you can have 32 chambers on extension manifold ports and another 4 chambers on the remaining multiplexer ports.
Interested in measuring trace gas evolution in flasks? The 8250-660 Flask Sampling Kit enables you to use your long-term system for flask measurements too.
Table 1. Total system power requirements.
Typical Power Consumption (W) | |||
---|---|---|---|
Instrument | Idle | Sampling/ Moving | Max/ Warm-up |
8250-01 | 0.8 | 9.2 | 11.0 |
8200-104/C (each) | 0.36 | 4.8 | N/A |
Note: The max listed for the 8250-01 is a typical maximum, there is no additional warm-up power. Chamber power reaches 4.8 W only when opening or closing, not the entire time of sampling.
Table 2. 8250-660 power requirements.
Typical Power Consumption (W) | |||
---|---|---|---|
Instrument | Idle | Sampling/ Moving | Max/ Warm-up |
9982-079 Thermistor Input Module (each) | 0.12 | 0.12 | N/A |
9982-077 Purge Pump (each) | 5.8 | 5.8 | 7.0 |
Flask Sampling Kit Total (each) | 5.92 | 5.92 | 7.12 |
Note: The power requirements for the 9982-077 Purge Pump are based on the pump being configured to run in the user interface. If the pump is not configured to run, it will use no power.
Specifications subject to change without notice.
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