- Truly compact: 4.60" (117 mm) diameter - same
as a CD!
- Self-contained, battery powered
- Total UV energy density, Joules/cm2
- Peak UV irradiance, Watts/cm2
- Measures four UV ranges simultaneously - UVA, UVB,
- Low battery indicator
- User-replaceable lithium batteries
- User-selectable data displays
- Measure UV curing system performance
- Determine UV lamp efficiency
- Establish UV level for proper curing
- Measure UV spectral distribution
- Meet ISO 9000 requirements
The EIT UV Power Puck is a self-contained, electro-optic instrument
designed to measure and display peak UV irradiance and total
UV energy density used in the UV curing process. The Power Puck's
unique compact design, only 4.60 inches in diameter and 1/2
inch high, allows it to be placed directly in most curing environments.
The instrument operates successfully in the extremes of UV and
thermal radiation often encountered in UV curing systems.
A carefully designed optical sensing system measures total
UV dosage on 4 different channels simultaneously. These four
different channels represent four different UV bandwidths of
interest for most curing applications: UVA (320-390nm), UVB
(280-320nm), UVC (250-260nm) and UVV (395-445nm). The output
of the sensing system is converted to digital form and displayed
on the LCD by scrolling through a user-friendly menu. Total
UV dosage, measured in Joules/cm2, is the result of the integrated
irradiance during exposure time. It is how much actual UV energy
was impinged on the unit from the time it encountered UV until
the time the UV source was removed. The UV Power Puck also has
the distinct advantage of being the only radiometer able to
monitor the peak irradiance in Watts/cm2 in each bandwidth.
This allows the operator to determine not only the total energy
density, but also how that energy density is delivered; i.e.,
what irradiance at what wavelength.
Why Use a Radiometer?
When product is passed through a curing system and the resulting
cure is satisfactory, the operator normally does not know what
UV level was required to obtain this cure. Therefore, he may
not be able to repeat this process successfully next week or
next month. With the use of a radiometer, the operator can immediately
quantify the process. After product is cured satisfactorily,
the operator exposes the radiometer to the same UV process.
The UV level readings are displayed on the radiometer.
Because of the data provided by the radiometer, true process
control can be achieved. At start-up each day, the operator
exposes the radiometer to the curing process, takes readings,
and observes if the readings are within his curing parameters
for a satisfactory cure for the particular product to be run.
The operator can make adjustments by changing length of exposure
time, cleaning reflectors, or even relamping in order to obtain
the desired UV levels, thereby assuring consistency in the curing
process. The radiometer quantifies the UV curing system, and
takes a great deal of guesswork out of the overall curing process.
The EIT UV Power Puck is very easy to use. Simply push the
"Reset" button and send the unit through a curing
system, either conveyorized or stationary. The unit begins accumulating
data when the UV irradiance encountered is greater than its
built in threshold. After the Power Puck has been passed through
the UV process, the results of its measurements can be easily
accessed by touching the "Select" button to scroll
through a simple menu. Measurements displayed will be the UV
bandwidth being monitored, the total UV energy density in Joules/cm2,
and the peak UV irradiance in Watts/cm2 . If a low
battery condition exists, this will also be displayed.
The unit will time itself out after approximately two minutes
of non-use to conserve battery life. After the unit times itself
out, the measurements obtained by the Power Puck for all bandwidths
on all menus can still be accessed by pushing the "Select"
button again. This information will remain available until the
user pushes the "Reset" button to initiate a new reading.
The unit is able to withstand extremely demanding operating
conditions. Since the internal temperature should not exceed
80°C, a safety, audible high temperature alarm will provide
a warning that the unit is approaching an unsafe internal temperature.
The EIT UV Power Puck can accommodate energy irradiance levels
up to 5W/cm2. An optional 10W/cm2 version
is available. Also available are several low power options.
Total energy density range is 0 to 250 Joules/cm2
for each UV range.
The Power Puck is battery powered using lithium, user-replaceable
batteries. A weak battery will trigger a "Lo Batt"
warning to appear on the display. Data remains valid even in
"Lo Batt" status. When the battery voltage affects
data integrity, zeros are displayed in all locations.
The EIT UV Power Puck comes in a protective foam-lined carry
POWER PUCK® RADIOMETER
UVA, UVB, UVV - 5mW/cm2 to 5W/cm2
UVC - 5mW/cm2 to 1W/cm2
10 Watt Version:
UVA, UVB, UVV - 10mW/cm2 to 10W/cm2
UVC - 10mW/cm2 to 1W/cm2
Low Power Versions:
UVA, UVB, UVV - 50uW/cm2 to 10mW/cm2
UVC - 50uW/cm2 to 10mW/cm2
- OR -
UVA, UVB, UVV - 100uW/cm2 to 100mW/cm2
UVC - 50uW/cm2 to 10mW/cm2
Total Energy Density 0 to 250 Joules/cm2
UVA, UVB, UVV - 0 to 5W/cm2
UVC - 0 to 1W/cm2
Internal Radiometer Temperature Degrees Celsius (80ÉC max.)
Lo Batt Indicator
button switch allows user to obtain data from all display
modes in each of the four spectral ranges
typical, +/-10% guaranteed
internal. The EIT UV POWER PUCK will tolerate much higher
external temperatures for short periods. A safety audible
alarm will sound if internal temperature rises above a safe
4 minutes RUN mode; 2 minutes DISPLAY mode
user replaceable lithium cells, Duracell DL2450, Sanyo CR
2450 or equivalent
1500 readings with typical use
diameter x .50" high (11.68cm x 1.27cm)
oz. (333.11 grams)
steel and aluminum
polyurethane interior. Soft, scuff-resistant nylon exterior
x 4.7"H x 8.25"D (30.48 x 11.94 x 20.96cm)