Appendix A: Joey Dosimeter; What Is The Joey Dosimeter; Checking Light Intensity - Respironics Wallaby 3 Manual Profesional

What is the Joey Dosimeter?

The Joey Dosimeter is a wide-band spectroradiometer used to measure the light wavelengths emitted
from the fiber optic light panel in a phototherapy system. Checking light output helps ensure proper
results from therapy.
The meter measures light intensity in units of microwatts per square centimeter per nanometer
2
(µW/cm /nm). The Joey has one scale ranging from 00.0 to 99.9 µW/cm
The light intensity (µW/cm
You should measure light output whenever there is a change that affects the phototherapy light output
and prior to each new patient use. The light output should be checked on both Light Level 1 and Light
Level 2. See Checking Light Intensity to verify minimum acceptable light level.
Joey is a trademark of Respironics, Inc.

Checking Light Intensity

You should measure the light output of the Wallaby System:
Prior to each new patient use
After anything occurs that could impact light output, such as
-
The cleanliness of the fiber optic light panel is questionable
-
The fiberoptic light panel has been scratched or otherwise damaged
-
There has been a change in the line voltage
IMPORTANT! Variations within the lamps can affect the lamp life and light output. The
vibrations and mechanical shocks can also affect the lamp life. Do not use non-recommended
lamps at any time. These lamps may not only affect the light output, but may also affect the
entire phototherapy system.
IMPORTANT! To ensure accurate light intensity measurements the Joey Dosimeter must be
calibrated yearly.
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Appendix A: Joey
2
/nm) is read directly from the digital display.
Appendix A: Joey™ Dosimeter
 Dosimeter
2
/nm (425-550 nanometers).