ASD FieldSpec 4 Wide-Res Field Spectroradiometer
30 nm SWIR resolution offers a cost-effective solution
The 3 nm VNIR, 30 nm SWIR spectral resolution of the ASD FieldSpec® 4 Wide-Res field spectroradiometer, is a cost-effective solution for the analysis of any material with broad spectral features. General vegetation analysis and water column studies are common application areas that are associated with broader spectral features. The ASD FieldSpec 4 Wide-Res field spectroradiometer can be utilized for many of the same applications as the Standard-Res model although the characterization of material with sharper spectral features will be less precise. The ASD FieldSpec 4 Wide-Res is not recommended for the analysis of materials and compounds with narrow or sharp geological spectral features in the SWIR range such as alteration mineralogy or atmospheric/gas studies.
Because of its wider optical slit the ASD FieldSpec Wide-Res field spectroradiometer delivers the best signal throughput of any ASD FieldSpec spectroradiometer. High throughput benefits measurements taken in low illumination conditions.
This instrument is available at a significantly lower price point than other ASD FieldSpec 4 models, which makes it an attractive option when budgets are tight.
In addition to being a cost-effective field spectroradiometer, the ASD FieldSpec 4 Wide-Res also functions well as a rugged, field spectrometer for accurate contact reflectance or non-solar stand-off measurements
|Spectral Range||350-2500 nm|
|Spectral Resolution||3 nm @ 700 nm
30 nm @ 1400/2100 nm
|Sampling Interval||1.4 nm @ 350-1000 nm
1.1 nm @ 1001-2500 nm
|Scanning Time||100 milliseconds|
|Stray light specification||VNIR 0.02%, SWIR 1 & 2 0.01%|
|Wavelength reproducibility||0.1 nm|
|Wavelength accuracy||0.5 nm|
|Maximum radiance||VNIR 2X Solar, SWIR 10X Solar|
|Detectors||VNIR detector (350-1000 nm): 512 element silicon array
SWIR 1 detector (1001-1800 nm): Graded Index InGaAs Photodiode, Two Stage TE Cooled
SWIR 2 detector (1801-2500 nm): Graded Index InGaAs Photodiode, Two Stage TE Cooled
|Input||1.5 m fiber optic (25° field of view). Optional narrower field of view fiber optics available.|
|Noise Equivalent Radiance (NEdL)||VNIR 1.0 X10-9 W/cm2/nm/sr @700 nm
SWIR 1 1.5 X10-9 W/cm2/nm/sr @ 1400 nm
SWIR 2 2.8 X10-9 W/cm2/nm/sr @ 2100 nm
|Weight||5.44 kg (12 lbs)|
Wavelength, absolute reflectance, radiance*, irradiance*. All calibrations are NIST traceable. (*radiometric calibrations are optional)
Windows® 7 64-bit laptop (instrument controller)
One year full warranty including expert customer support
ASD FieldSpec 4 Wide-Res Field Spectroradiometer
Probes and Lighting
The ASD Contact Probe is designed for contact measurements of solid raw materials such as minerals, grains, other granular materials. Its innovative optical design minimizes measurement errors associated with stray light and allows for measurement of samples through clear and transparent plastic bags.
In addition to the standard contact probe, ASD also offer the Hi-Brite contact probe and the Plant Probe.
All contact probes are available with a ruggedized cable feed and cable, designed for applications that involve extra cold or harsh temperatures. (see image below specifications)
|Length||10" ( 25.4 cm)|
|Weight||1.5 lbs (.7 kg)|
|Power requirements||12-18 VDC, 6.5 W|
|Lightsource type/Life (approx.)||Halogen bulb/1500 hours|
|Halogen bulb color temperature||2900 K|
|Spot size||10 mm|
The ASD Muglight is designed for analysis of raw materials requiring reflectance and absorbance measurements. It can measure samples through glass vials, or using the ASD sampling tray adapter. It's unique and innovative design minimizes measurement errors associated with stray light and specular reflected components.
For users requiring higher intensity illumination, ASD also offers the Hi-Brite Muglight.
|Size||5.5” x 3.7” (14cm x 9.4cm)|
|Weight||2.91 lbs (1.3 kg)|
|Power requirements||Input power 5.5 W, bulb 4 W|
|Light source (type/life) approx.||Tungsten Quartz Halogen b/1500rs|
|Bulb color temp||2900 K|
|Spot size||12 mm|
When your application requires analysis of irregularly shaped or non-homogeneous samples, the ASD Turntable is ideal for obtaining a highly accurate average. Especially useful for instrument owners in the grain, agriculture, pulp and paper, food, plastics and mining industries.
The Turntable offers:
- 53.2 mm sampling spot size
- Rotates at 22 RPM
- Fits up to a 150mm sample dish
- Compact (8"x11"x11" or 20.32 cm x 27.94 cm x 27.94 cm) footprint.
The Turntable comes standard with a 4000 hour halogen light source and one standard 150 mm x 15 mm Petri dish.
The same great design and functionality as ASD's standard contact probe
with a lower intensity bulb position for non-destructive data collection from live vegetation and other heat sensitive targets.
ASD's Leaf Clip assembly is designed specifically for use with the Plant Probe to simplify the process of collecting spectra on live vegetation. The unique design includes a gentle trigger lock/release gripping system for holding the target sample in place without removing the leaf from its habitat, or inflicting damage.
The Fiber Optic Illuminator is a portable, external light source designed for use with ASD instruments and sampling accessories that do not have a built-in light source.
|Length||11.43 cm (4.5 inches)|
|Width||8.255 cm (3.25 inches)|
|Weight||292 grams (10.3 ounces)|
ASD offers multiple pistol grip options for superior ease-of-use and adaptability to a variety of environmental and situational elements, when using your FieldSpec® and FieldSpec HandHeld instruments. All pistol grip designs include the quick-connect/disconnect fiber optic cable snap-in feature, pistol grip clip assembly for safely and securely affixing the pistol grip to your waist-belt on the back pack, and many offer a built-in bulls-eye level for added precision.