Joey Dosimeter
Instructions for Use
Description
The Joey Dosimeter is a wide-band spectroradiometer used in neonatal phototherapy.
The response curve of the sensor is between 425nm – 475nm with the peak at 450nm.
The meter measures irradiance in units of microwatts per centimeter per square
nanometer (µw/cm²/nm).
The Joey Dosimeter should only be used to measure the irradiance of the wavelengths
of blue light, 425nm – 475nm, and for no other purpose.
Use with Fiber Optic Phototherapy Devices
1. Place the photosensor face down on the fiber optic panel.
2. Press the “PUSH TO READ” button.
3. The Joey Dosimeter measuring device has one scale ranging from 00.0 to 99.0 µw/cm²/nm
(425-475). The light intensity (µw/cm²/nm) can be read directly from the digital display.
NOTE:
A “LO BAT” signal will be displayed if the battery needs to be changed.
Output measurements should be taken whenever there is a condition that may affect the
phototherapy light output such as but not limited to:
1. Before each patient use
2. Operating hours of phototherapy device
3. Cleanliness of device’s optical system
4. Condition of light emitting pad.
Battery Information
The Joey Dosimeter operates with a single nine volt (9V) nonrechargeable battery.
Replacing the Battery
1. Remove the battery compartment cover on the lower back side of the Joey Dosimeter.
2. Lift out the 9-volt battery and replace it with a battery of the same type.
3. Replace the battery compartment cover.
Maintenance
Cleaning
Avoid getting fingerprints, grease, or dust on the sensor. A dirty sensor will result in false low
intensity readings. Clean the sensor with a water dampened lens paper and then wipe dry.
DO NOT immerse in water or apply any water or commercial cleaning agents directly
to the sensor and/or digital display, as this will cause damage to the device.
