Light meter pod

The Light Meter Pod connects to any PowerLab unit with Pod ports (8-pin DIN inputs). PowerLab and MacLab units without available Pod ports require the Pod Expander.

Features

• Incorporates four low pass filters to remove any high frequency interference, for example, from room lights.
• The ability to record the flickers associated with fluorescent lights with the low pass filter off.
• Four gain settings (200 lux - 200 klux)

System compatibility

The Light Meter Pod connects to any PowerLab hardware units with Pod ports (8-pin DIN inputs). PowerLab and MacLab (except 4s, 8s and 16s) units without Pod ports require the FE305 Pod Expander.
The Light Meter Pod is supported by the following versions of ADInstruments
software:

WINDOWS

• LabChart v6 or later
• Chart v3.4.8 or later
• Scope v3.6.3 or later
• LabTutor v1.4 or later

MACINTOSH

• LabChart v6 or later
• Chart v3.6.3 or later
• Scope v3.6.3 or later

Transducer compatibility

The Light Meter Pod is recommended for operation with the MLT331 Light Meter probe.

Applications

Monitoring low and high light levels and changes from daylight, room lights measuring light intensity through solutions.

Theory of operation

The Light Meter Pod measures the current across an illuminated photodiode and outputs an analog voltage DC signal proportional to the light intensity, lux (lx). The Pod has four Gain settings (200 lx - 200 klx) and incorporates four low pass filters to remove any high frequency interference from room lights if required. Select low pass filter “None” to record the flickers associated with fluorescent lights.

Operating instructions

Connect the Light Meter Probe to the BNC connector on the rear panel of the Light Meter Pod. Connect the 8-pin DIN cable from the rear panel of the Light Meter Pod to a PowerLab Pod port (or to one of the Pod ports of a Pod Expander connected to the PowerLab). Do not connect other devices such as Front-ends or Instruments to the BNC connector on the channel used by the Pod. When the LabChart software is activated the Light Meter Pod window (Figure 1) can be accessed from the Channel function pop-up menu.