Light Measurement
PR-810
Overview
The PR-810 is one in our new family of filter photometers that further extends and enhances our reputation for providing world class photometers that serve a diverse range of markets from aerospace to agriculture. As with all our photometers, the PR-810 features the Pritchard optical system for unparalleled target alignment. With the Pritchard system, the alignment and measuring optics are one in the same, so there is no misrepresentation of what is being measured.
The PR-805 uses a high sensitivity PMT detector and incorporates four automated apertures, enabling the selection of the most appropriate measurement spot size.
Features
New Design
The PR-810 is unlike any of our previous Photo Multiplier Tube (PMT) based photometers - it's battery powered! The Lithium-Ion battery provides more that 12 hours of continuous operation providing the ultimate in portability. It also features a full color touch screen display, and 75 mm objective lens focusable from 355 mm to infinity.
Other hardware features include AutoSync® for automatically synchronizing to the source refresh rate insuring the utmost accuracy, an optional External Trigger Port allowing remote measurement activation from either a push button or peripheral device, a Secure Digital (SD) port for measurement storage.
Sensitivity
Low light applications are no problem for the PR-810. Using the largest of the 4 fully automated apertures, the PR-810 can measure down to 0.00034 cd/m². A fully automated Neutral Density (ND) filter turret provides 3 decades of source attenuation (10X, 100X and 1000X attenuation) resulting in 9 Million:1 dynamic range, wide enough for any contrast measurement task.
Connectivity
For help in communicating with the outside world, the PR-810 is supplied with a USB interface and driver. The driver establishes a virtual COM port making control of the PR-810 as easy as communicating over RS232. If a traditional RS232 interface is a must, it can be supplied to complement the USB interface. Want to go wireless? A Class 1 Bluetooth interface can be added for control of the PR-810 up to 100 meters away.
For control of the PR-810, an on-board protocol - Remote Mode Software - allows you to make measurements and get the data you need by sending and receiving simple ASCII text commands making integration into an ATE or other environment a snap.
Manufactured by Photo Research
Specifications
Detectors | Photomultiplier Tube (PMT) |
|---|---|
Optics | Pritchard optical system |
Digital Resolution | 16 bits |
Standard Apertures | 3°, 1°, 0.25°, 0.125° |
Optional Apertures | 2°, 1°, 0.2°, 0.1° |
Luminance Range | 0.00034 to 1,776,000 cd/m² † |
Luminance Accuracy | ± 4% * |
Luminance repeatability | ≤ 1% * |
Display | 57 x 75mm Colour Touch Screen Display |
Battery | Rechargeable Lithium-ion. (≥ 12 hours continuous operation) |
Weight | 1.7 kg |
Operating Temperature | 1° to 35° C |
† Luminance values are for 10:1 signal to RMS noise against an Illuminant A based (2856K) NIST traceable luminance standard
* Stated luminance accuracy and repeatability at 0.0086 cd/m² with 3° aperture.
PR-810 Field Coverage (mm)
| Standard Apertures | ||||
|---|---|---|---|---|---|
Accessory | Working Distance | 1° | 1/2° | 1/4° | 1/8° |
MS-75 | 355 mm 305 m | 15.75 - 15960 | 2.63 - 2660 | 1.32 - 1330 | 0.658 - 655 |
SL-0.5X | 91.4 mm to 137 mm | 4.5 - 7.62 | 0.75 - 1.27 | 0.375 - 0.635 | 0.188 - 0.318 |
SL-1X | 46 mm to 66 mm | 2.67 - 3.96 | 0.445 - 0.660 | 0.226 - 0.330 | 0.111 - 0.165 |
MS-2.5X | 46 mm | 1.53 | 0.225 | 0.128 | 0.064 |
MS-5X | 28 mm | 0.867 | 0.145 | 0.072 | 0.036 |
MS-7.5 | 100 mm 30.5 m | 52.6 - 1590 | 8.8 - 2660 | 4.4 - 1330 | 3.5 - 665 |
|
| Optional Apertures | ||||
|---|---|---|---|---|---|---|
Accessory | Working Distance | 2° | 1° | 0.2° | 0.1° | 1 x 0.33° |
MS-75 | 355 mm 305 m | 10.5 - 10640 | 5.25 - 5320 | 1.05 - 1064 | 0.525 - 532 | 5.25 x 1.73 - 5320 x 1760 |
SL-0.5X | 91.4 mm to 137 mm | 3.0 - 5.08 | 1.50 - 2.54 | 0.3 - 0.508 | 0.075 - 0.127 | 1.50 x 0.495 - 2.54 x 0.838 |
SL-1X | 46 mm to 66 mm | 1.78 - 2.64 | 0.89 - 1.32 | 0.178 - 0.264 | 0.089 - 0.132 | 0.89 0.294 - 1.32 x 0.436 |
MS-2.5X | 46 mm | 1.02 | 0.51 | 0.102 | 0.051 | 0.168 |
MS-5X | 28 mm | 0.578 | 0.289 | 0.058 | 0.0289 | 0.095 |
MS-7.5 | 100 mm 30.5 m | 35.1 - 10600 | 17.5 - 5320 | 2.2 – 1064 | 1.75 - 532 | 17.5 x 5.8 - 5320 x 1760 |
PR-810 Photometric Sensitivity Range (in cd/m2)
| Standard Apertures |
| |||
|---|---|---|---|---|---|
Accessory | 3° | 1/2° | 1/4° | 1/8° | |
MS-75 | 3.4x10-4 to 3,080 | 1.2x10-2 to 110,000 | 4.9x10-2 to 445,000 | 0.20 to 1,750,000 | |
SL-0.5X | 3.4x10-4 to 3,080 | 1.2x10-2 to 110,000 | 4.9x10-2 to 445,000 | 0.20 to 1,750,000 | |
SL-1X | 3.4x10-4 to 3,080 | 1.2x10-2 to 110,000 | 4.9x10-2 to 445,000 | 0.20 to 1,750,000 | |
MS-2.5X | 8.5x10-4 to 7,700 | 3.1x10-2 to 277,000 | 0.12 to 1,110,000 | 0.50 to 4,440,000 | |
MS-5X | 1.4x10-3 to 12,330 | 4.9x10-2 to 445,000 | 0.19 to 1,750,000 | 0.79 to 7,100,000 | |
MS-7.5 | 3.4x10-4 to 3,080 | 1.2x10-2 to 110,000 | 4.9x10-2 to 445,000 | 0.20 to 1,750,000 | |
LA-800 | 3.4x10-4 to 3,080 | 1.2x10-2 to 110,000 | 4.9x10-2 to 445,000 | 0.20 to 1,750,000 | |
FP-800 | 8.5x10-4 to 7,700 | 3.1x10-2 to 277,000 | 0.12 to 1,110,000 | 0.50 to 4,440,000 | |
CR-800 (in Lux) | 2.1x10-3 to 19,300 | 7.7x10-2 to 697,000 | 0.30 to 2,780,000 | 1.24 to 11,100,000 | |
| Optional Apertures | ||||
|---|---|---|---|---|---|
Accessory | 2° | 1° | 0.2° | 0.1° | 1 x 0.33° |
MS-75 | 7.7x10-4 to 6,950 | 3.1x10-3 to 27,750 | 7.7x10-2 to 695,000 | 0.30 to 2,770,000 | 2.8x10-2 254,000 |
SL-0.5X | 7.7x10-4 to 6,950 | 3.1x10-3 to 27,750 | 7.7x10-2 to 695,000 | 0.30 to 2,770,000 | 2.8x10-2 254,000 |
SL-1X | 7.7x10-4 to 6,950 | 3.1x10-3 to 27,750 | 7.7x10-2 to 695,000 | 0.30 to 2,770,000 | 2.8x10-2 254,000 |
MS-2.5X | 1.9x10-3to 17,330 | 7.7x10-3 to 69,500 | 0.19 to 1,730,000 | 0.78 to 6,935,000 | 8.4x10-2 to 637,000 |
MS-5X | 3.10x10-3 to 27,750 | 1.2x10-2 to 110,000 | 0.30 to 2,700,000 | 1.23 to 11,000,000 | 0.11 to 1,017,000 |
MS-7.5 | 7.7x10-4 to 6,950 | 3.1x10-3 to 27,750 | 7.7x10-2 to 695,000 | 0.30 to 2,770,000 | 2.8x10-2 254,000 |
LA-800 | 7.7x10-4 to 6,950 | 3.1x10-3 to 27,750 | 7.7x10-2 to 695,000 | 0.30 to 2,770,000 | 2.8x10-2 254,000 |
FP-800 | 1.9x10-3to 17,330 | 7.7x10-3 to 69,500 | 0.19 to 1,730,000 | 0.78 to 6,935,000 | 8.4x10-2 to 637,000 |
CR-800 (in Lux) | 4.8x10-3 to 43,500 | 1.9x10-2 to 174,000 | 0.48 to 4,350,000 | 1.94 to 21,000,000 | 0.18 to 16,00,000 |
*Minimum values are determined at 10% precision. Maximum values are determined using the ND-3 filter.