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The
PR-524 is the next generation in portable, hand-held photometry. It
combines illuminance and luminance measurement capabilities with
cutting edge technology by featuring a 1.5" x 2.3" back-lit
touch screen display, USB interface, Secure Digital (SD) card slot
for measurement storage, multiple measuring head capability and
rechargeable Li battery. The only button on the PR-524 is the Measure button.
Features
Back Lit / Touch Screen Display
All instrument set-up,
measurement setup and file operations are performed via menus on the
touch screen display. The built-in back light makes it convenient for
working in dark ambient environments.
USB Interface
The PR-524 can be
controlled from a PC over the built-in USB interface. We've also
included an ASCII based Remote Mode control language and driver that
emulates a serial (COM:) port. For example, the PR-524 you can
control using Windows HyperTerminal.
Secure Digital Storage
Over 50,000 measurements
can be stored on the 32 MByte Secure Digital (SD) card supplied with
the PR-524.
Multiple Measuring Heads
If your application
requires a multi-spot measurement such as projector uniformity, the
PR-524 can be fitted with up to 15 remote measuring heads - all under
the control of a PC communicating with the base unit over the USB
interface. Each remote detector is individually addressed.
AutoSync® Source
Rate Synchronization
For the measurement of
non-DC sources, the PR-524 will automatically determine the source
refresh or update rate and automatically adjust the PR-524
measurement parameters insuring accurate and repeatable measurements.
Remote Trigger
When it is necessary to
either perform a hands off measurement or to measure a flashing
source such as a camera flash, the PR-524 can be triggered remotely,
and once triggered, will send a pulse to the remote source. Or, it
can be used simply as remote trigger.
Luminance Measurements
For luminance
measurements, the optional PR-522 SpotMate replaces the standard
illuminance accessory. The PR-522 features true Pritchard Optics for
unambiguous target alignment capability and can be provided with one
of four measuring fields (apertures )- 2°, 1°, ½°
or ¼°. For luminance measurements that are inaccessible to
line-of-sight measurements, an optional fiber probe accessory can be
utilized and for applications where it is necessary to make
measurements of self emissive devices in an environment where the
ambient light cannot be extinguished, a contact measurement Micro
Reader Probe accessory can be employed. The PR-524 and the PR-522 can
be ordered as a system, the PR-520
Remote Mode
If you need to include the
PR-524 into an ATE environment, we provide software that creates a
COM port when the PR-524 is connected to your PC using the USB
interface. Simply send a command string to the virtual COM port using
ACII characters and the PR-524 will perform the measurement and
return the data requested in the command string. This capability,
unique among hand held portable photometers, gives you complete
control of the instrument and data returned from the measurement.
Applications
-
Area Illumination
- Projector
Output
- Architectural
Lighting
- Projector
Uniformity
- Screen
Brightness
Standard
Equipment
Specifications (subject
to change)
Standard
Equipment |
PR-524
Photometer with Cosine Receptor Head, Lithium-ion battery, Secure
Digital (SD) card, carrying case, AC Adaptor, SD 'Explorer' PC software |
Display |
1.3 x 2.3 i
LCD inch back lit touch screen |
Digital
Resolution |
20 bits |
Sync
Range |
20 to 400 Hz |
Measurement
Modes |
Illuminance
(footcandles and lux - standard)
Luminance
(footlamberts and cd/m2
- optional with PR-522, FP-524 or MR-524) |
Options |
PR-514
Remote Heads (up to 15), LR-522 SpotMate, FP-524 Fibre Probe, MP-524
Micro Reader Probe |
Illuminance
Range |
0.01 -
300,000 lux (0.001 - 30,000 footcandles) |
Illuminance
Accuracy |
+/- 2% when
measuring NIST traceable illuminance standard at 2856 Kelvin
(Illuminant A) |
Repeatability |
1% at 0.05%
lux (0.005 footcandles) |
Interface |
USB |
Measurement
Storage |
Internal,
Secure Digital (SD)
Capacity:
Internal:
100 Measurement Buffer (while unit is on).
External:
For a 32M Card: Approx. 53,000 measurements (approx. 600 bytes per measurement) |
Power |
Rechargeable
lithium ion battery - charges in the PR-524 while connected to the
external supply (AC-520). |
Battery
Life |
6 hours
continuous use (without back light) |
Weight |
255g
without battery |
Dimensions |
Main Body:
175 x 76.2 mm
Measuring
Head: 55.1x76.2 mm |
Operating
Temperature |
5 - 35 degC |
PR-522
SpotMate Specifications |
Optics |
Pritchard
Optical System - Through the Lens Alignment |
Measuring
Angle |
1o |
Field of
View (FOV) |
10o |
Luminance
Range |
Aperture (deg) |
Range (fl) |
2 |
|
1 |
0.067 - 2,014,000 |
1/2 |
0.268 - 8,056,000 |
1/4 |
1.07 - 110,399,000 |
|
Focus Range |
356 mm to infinity |
Spot
Size |
5.7mm @ 356
mm from target |
Measuring
Distance Versus Spot Size |
Aperture (deg) |
Minimum
Spot Size (mm) |
2 |
|
1 |
5.77 |
1/2 |
3.52 |
1/4 |
1.76 |
|
Schematic |