OL FEL-A Irradiance Standard (250 – 750 nm)

Optronic Laboratories offers a 1000-W FEL-A Irradiance Standard. The spectral irradiance calibration of this lamp covers the 250-750 nm wavelength.

The OL FEL-A uses the OL 410-1000 Precision Lamp Source and OL 61 Lamp Holder. We also recommend the OL 62 FEL Alignment Jig and OL 63 Adjustable Lamp Holder Mount.

SKU: OL FEL-A Category:


Optronic Laboratories offers a 1000-W FEL-A Irradiance Standard. The spectral irradiance calibration of this lamp covers the 250-750 nm wavelength. Each of the 1000-W FEL lamps have a tungsten coiled-coil filament enclosed in a small quartz envelope. The lamp bases have been converted to a medium bi-post base as recommended by the National Institute of Standards and Technology (NIST). This special lamp base improves alignment accuracy, which minimizes uncertainties due to positioning and orientation of the lamp.

@ 250 nm: 0.03 μW/cm<sup>2</sup>nm <br> @ 1000 nm: 25μW/cm<sup>2</sup>nm

32 mW/cm²

800 footcandles

High-Accuracy: ± 1% <br> Super High-Accuracy:± 1% <br> <em>* Uncertainty is relative to NIST Scale</em>

Illuminance:± 1%

< 0.06%/ hour <br> <em>** High stability option available</em>

8.00 Amps DC


OL 410 Precision Lamp Source


OL 410-1000 Precision Lamp Source (1000W)

The OL 410 is a microprocessor-controlled, precision DC lamp source specifically designed to accurately operate tungsten filament lamp standards...



Optronic Laboratories warrants that the standard lamp supplied will be of the kind described or in any specification and drawings approved by Optronic Laboratories and will be free from defects in material and workmanship for 50 hours of use or one (1) year from the date of certified calibration by the original Purchaser, whichever occurs first.* During this period, Optronic Laboratories will at its option either repair, recalibrate, or replace any goods that are found to be defective in material or workmanship, provided the goods are returned to Optronic Laboratories in Orlando, Florida, with all shipping, insurance, and delivery charge prepaid (DDU Orlando, Florida). This Warranty does not extend to batteries, fuses, and glass phototubes (if any), or other items of limited durability, nor does this warranty cover damage to goods caused by leaky or otherwise defective batteries, by Purchaser use of improper batteries and by misuse or abuse, unauthorized alteration, excessive line voltage, excessive temperatures (above 160 degrees F), extreme environmental conditions (such as extremely dusty or wet environment), corrosive atmospheres or servicing by unauthorized personnel. The items returned shall only be accepted when accompanied by a written statement setting forth the nature and suspected cause of the alleged deficiencies. After the initial one (1) year warranty, repairs performed by Optronic Laboratories are covered under a limited ninety (90) day warranty. The warranty repaired (or recalibrated, or replacement) items will be returned DDU to customer. THERE ARE NO OTHER WARRANTIES, EXPRESS OR IMPLIED, (INCLUDING THE WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE OR IMPLIED WARRANTY OF MERCHANTABILITY) OTHER THAN THE WARRANTY SET FORTH HEREIN.