Light Measurement Detectors

ILT detectors are designed to emit low levels of current in the pico-amp to milli-amp range which is then converted to calibrated optical units such as lux, W, W/cm2, etc., when used with ILT light meters. Detector assemblies typically include a sensor, filter, optic and calibration.

Example of a calibrated detector assembly for lux: "SED033/Y/W" includes the “SED033” 33mm² silicon photodiode detector, the “Y” photopic correction filter with the “W” Diffuser and calibration. (Note: “/U” indicates an uncalibrated sensor).

The SED and SPM type optical detector housings are made of black anodized aluminum, with female filter threads (1¼-24), a tripod mount (¼-20), and two end mounts (#8-32). Only these housings allow for filter selection/swapping and underwater modification. All underwater modified detectors (SUD) require the W wide-eye diffuser in addition to any other filters and come special order in 10, 50 or 100 foot lengths.

The below four versions do not have removable, swappable filters and cannot be made waterproof:

The SCD type optical detectors are in a 42 x 19 x 14 mm housing.

The SSD type optical detectors are ultra-low profile (31 x 41 x 4.3 mm) detectors for UV measurements.

The XSD type optical detectors are in a 15 x 42 mm dia. housing with M6X1 tapped hole for mounting.

SPD type detectors are in a 121 x 19 mm dia. pen style housing.

Part Number/Description	Spectral Range	Specifications
SCD110/U, ILT1700, ILT2400, ILT5000 Illuminance Probe	400-700 nm, Photopic	5.8 mm² active area silicon detector with built in CIE VIS response filter in wand style detector housing. Dimensions: 43 x 19 x 15 mm. UNCALIBRATED.
SCD144/U, ILT1700, ILT2400, ILT5000 Bilirubin Phototherapy Probe	422-488 nm, 450 nm peak	5.8 mm² active area silicon detector with built in filter in wand style detector housing. Dimensions: 43 x 19 x 15 mm. UNCALIBRATED.
SCD145/U, ILT1700, ILT2400, ILT5000 Phototherapy Probe	360-525 nm, 450 nm peak	5.8 mm² active area silicon detector with built in filter in wand style detector housing. Dimensions: 43 x 19 x 15 mm. UNCALIBRATED.
SED005/U, ILT1700, ILT2400, ILT5000 UV-Visible GaAsP Detector	250-675 nm, 610 nm peak	5.2 mm² detector with quartz window. Dimensions: 29 x 42 mm dia. UNCALIBRATED.
SUD005/U, Underwater version		Example of an ILT Underwater Detector - SUD033/U
SED007/U, ILT1700, ILT2400, ILT5000 IR InGaAs Detector	850-1700 nm, 1455 nm peak	7 mm² detector with spectral range from 850-1700nm. Dimensions: 29 x 42 mm dia. UNCALIBRATED.
SUD007/U, Underwater version		Example of an ILT Underwater Detector - SUD033/U
SED033/U, ILT1700, ILT2400, ILT5000 Broadband Silicon Detector	200-1100 nm, 950 nm peak	33 mm² silicon detector with quartz window. Dimensions: 29 x 42 mm dia. UNCALIBRATED.
SUD033/U, underwater version		Example of an ILT Underwater Detector - SUD033/U
SED100/U, ILT1700, ILT2400, ILT5000 Broadband Silicon Detector	200-1100 nm, 950 nm peak	100 mm² (1 cm2) silicon detector with quartz window. Dimensions: 29 x 42 mm dia. UNCALIBRATED.
SUD100/U, underwater version		Example of an ILT Underwater Detector - SUD033/U
SED185/U, ILT1700, ILT2400, ILT5000 Gold Cathode Detector	160-240 nm, 185 nm peak	50 mm² active area Au Cathode Vacuum photodiode with quartz window (visible blocking). Good stability in high ozone / UV environment. Dimensions: 61 x 42 mm dia. UNCALIBRATED.
SED220/U, ILT1700, ILT2400, ILT5000 Solar Blind Detector	160-320 nm, 220 nm peak	50 mm² active area Vacuum photodiode with fused silica window (visible blocking). Dimensions: 53 x 42 mm dia. UNCALIBRATED.
SUD220/U, underwater version		Example of an ILT Underwater Detector - SUD033/U
SED240/U, ILT1700, ILT2400, ILT5000 Solar Blind Detector	185-320 nm, 240 nm peak	50 mm² active area Vacuum photodiode with quartz window (visible blocking). Dimensions: 61 x 42 mm dia. UNCALIBRATED.
SUD240/U, underwater version		Example of an ILT Underwater Detector - SUD033/U
SED254/U, ILT1700, ILT2400, ILT5000 Narrow Band UVC Detector	249-259 nm, 254 nm peak	3.6 mm² active area narrow band (254 nm filtered diode). Dimensions: 29 x 42 mm dia. UNCALIBRATED.
SUD254/U, underwater version		Example of an ILT Underwater Detector - SUD033/U
SED270/U, ILT1700, ILT2400, ILT5000 SiC UV Detector	215-355 nm, 265-270 nm peak	2 mm² active area SiC photodiode (visible blocking). Dimensions: 29 x 42 mm dia. UNCALIBRATED.
SUD270/U, underwater version		Example of an ILT Underwater Detector - SUD033/U
SED270C/U, ILT1700, ILT2400, ILT5000 SiC UV Detector	230-280 nm, 265 nm peak	2 mm² active area UVC filtered SiC (photodiode) visible blocking. Dimensions: 29 x 42 mm dia. UNCALIBRATED.
SUD270C/U, underwater version		Example of ILT Underwater Detector - SUD033/U
SED623/U, ILT1700, ILT2400, ILT5000 Thermopile Detector	200-4200 nm, flat > 700 nm	4 mm² thermopile detector with quartz window. Dimensions: 69 x 42 mm dia. UNCALIBRATED.
SED624/U, ILT1700, ILT2400, ILT5000 Thermopile Detector	0.2-40 micron, flat > 1.0 micron	4 mm² thermopile detector with KBr window. Dimensions: 69 x 42 mm dia. UNCALIBRATED.
SPD025F/U, ILT1700, ILT2400, ILT5000 Radiance Pen Probe	400-1064 nm Flat	1.2 mm² silicon detector in pen-like housing with radiance optics and built in filter. Dimensions: 92 mm x 21 mm dia. UNCALIBRATED
SPD025Y/U, ILT1700, ILT2400, ILT5000 Contact Luminance Pen Probe	400-700 nm Photopic	1.2 mm² silicon detector in pen-like housing with luminance optics and built in filter. Dimensions: 92 mm x 21 mm dia. UNCALIBRATED
SPM068, ILT1700, ILT2400, ILT5000 Photomultiplier Detector	230 - 700 nm, 400 nm peak	Switchable-gain UV Enhanced photomultiplier detector with self-contained power supply and expanded spectral range (for 2016). Dimensions: 100 mm x 42 mm dia. UNCALIBRATED.
SPM068_01, ILT1700, ILT2400, ILT5000 Photomultiplier Detector	230 - 870 nm, 400 nm peak	Switchable-gain UV Enhanced photomultiplier detector with self-contained power supply and expanded spectral range (for 2016). Dimensions: 100 mm x 42 mm dia. UNCALIBRATED.
SSD001/U, ILT1700, ILT2400, ILT5000 Slin UV Probe	260-400 nm nm, 370 nm peak	0.64 mm² silicon detector with built-in UV filter,built-in ultra thin ND filter. 31 x 41 x 4.3 mm. UNCALIBRATED
XSD140 Low profile UV sensor series	Varies by filter selection	The XSD140 sensors include a 2.4x2.8 silicon sensor with sensitivity over the range for 320 to 730 nm. Standard filtered versions available for UV LED/UV curing, germicidal and photoresist/lithography for UV measurements.