Videos

The following videos provide operating information for the LI-6800 Portable Photosynthesis System.

In this page:

Getting Started
Leaf Chambers
Configurations
Measurements
Data
Maintenance
Aquatic Chamber
Soil Chamber

Getting started

Unpacking the LI-6800

See what is included with the LI-6800 Portable Photosynthesis System.

Introduction to the Chemicals used in the LI-6800

An overview of the chemicals used in the LI-6800 Portable Photosynthesis System.

Installing the LI-190R

The LI-190R Quantum Sensor measures ambient PPFD on the LI-6800. This video shows how to install it.

LI-6800 Software Overview

An tour of the instrument software version 2.1.

Warmup Tests

LI-6800 warmup and system tests can help confirm that everything is working before you collect data.

Power Options for the LI-6800

The power options for the LI-6800 include batteries, power adapter, or a user-supplied power source.

Controlling the LI-6800 with a Computer

This video shows how to control the LI-6800 from a computer, smart phone, or tablet using a VNC (Virtual Network Computing) application.

Connecting an Auxiliary Air Supply

This video shows how to connect an external source of conditioned air to the LI-6800 air inlet.

Installing chambers

Installing the 3x3 cm Chamber and Light Source

Demonstration of how to install the 6800-12A 3×3 cm Chamber and 6800-02 Light Source.

Installing the Fluorometer

Demonstration of how to install the Fluorometer Chamber.

Swapping Leaf Chamber Springs

You can swap out the springs if you need more or less closure pressure on a leaf. This video shows how.

Installing the Bryophyte Chamber

The bryophyte chamber (6800-24) mounts directly to the sensor head, as shown in this video.

Configurations

Configuring a Light Source to Track Ambient Light

You can configure the LI-6800 so the light source tracks ambient light, as measured by the attached LI-190R.

Setting Stability Criteria

A quick overview of stability criteria and how to use them with the LI-6800.

Prompts, Constants, and Computed Values

A tour of the prompts, constants, and computed values in the LI-6800.

Introduction to Range Matching

Overview of the range matching feature.

Running Background Programs on the LI-6800

This video introduces the background program builder and shows how to control the LI-6800 using a program.

Measurement examples

How to Take a Basic Survey Measurement

Demonstration of a basic survey measurement.

Measuring Electron Transport Rate (ETR)

When you are ready to measure electron transport rate (ETR), this video reviews the settings and considerations for making the measurement.

Measuring Non-photochemical Quenching (NPQ)

Non-photochemical quenching (NPQ) is easy to measure with the LI-6800; this video shows how.

Using the Dynamic Assimilation™ Technique

An introduction and guide to the Dynamic Assimilation™ Technique (DAT).

Data files

Viewing Logged Data on the Instrument

You can work with data files directly on the LI-6800 console. This video shows how.

Transferring Data from the LI-6800 using a USB Device or Ethernet

Demonstration of how to download data from the LI-6800 using either a portable USB drive or Ethernet.

Maintenance

Maintenance Overview

Demonstration of basic maintenance procedures.

Changing Leaf Chamber Gaskets

Leaf chamber gaskets should be replaced if they are torn or compressed. This video shows how.

Extending the Soda Lime

You can refresh, or extend, the soda lime to get better CO₂ scrubbing capabilities. This video shows how to do it.

Replacing Column Filters

The chemical columns, which contain substances to condition the air, have internal filters. If a filter is clogged, you can replace it with spares from the kit.

Replacing Head Air Filters

The head, where chambers and tubes attach, has two internal air filters that can be replaced with spares from the kit.

Replacing the Leaf Temperature Thermocouple

If the leaf temperature thermocouple is not detected, it might need to be replaced with a spare from the kit. This video shows how to do it.

Replacing the Console Air Filter

The console has the main air intake filter. A replacement is included with spares from the kit. This video shows how to do it.

Cleaning the Screen

You can clean the LI-6800 display with common screen cleaners. This video shows how.

Cleaning the LI-6800 Analyzers

Demonstration of how to clean the LI-6800 IRGAs.

Aquatic chamber

Introduction to the Aquatic Chamber

This video introduces the Aquatic Chamber and describes how to directly measure CO₂ assimilation by algae in an aquatic suspension.

Using the Aquatic Chamber

This video shows how to install the aquatic chamber, measure an algae sample, and maintain the chamber.

Soil CO₂ flux chamber

Installing the Soil CO₂ Flux Chamber

This video shows how to install the soil CO₂ flux chamber on the LI-6800 head.

Overview of the Soil CO₂ Flux Chamber Software

This video provides an overview of the software used to make soil CO₂ flux measurements with the soil chamber.

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