spectral evolution
PSM Series Si / InGaAs Multiple Array
UV-VIS-NIR Full Range Portable Spectrometers
Technical Specifications

Field Portable Spectrometers forGeology and Environmental Studies

PSM-3500

PSM-2500

PSM-1900

350–2500nm

350–2500nm

350-1900nm

Spectral Resolution

3.5nm (350-1000nm)
10nm @ 1500nm
7nm @2100nm

3.5nm (350-1000nm)
22nm @ 1500nm
22nm @ 2100nm

3.5nm (350-1000nm)
10nm (1000-1900nm)

Spectral Sampling Bandwidth

1.5nm (350-1000nm)
3.8nm @ 1500nm
2.5nm @2100nm

1.5nm (350-1000nm)
6nm @ 1500nm
6nm @ 2100nm

1.5nm (350-1000nm)
3.8nm @ 1500nm

Si Detectors

512 element Si array(350–1000nm)

512 element Si array(350–1000nm)

512 element Si array(350–1000nm)

Spectral Range

InGaAs Detectors

256 element extended wavelength 256 element extended wavelength
array (970–1910nm)
array (970–2500nm)

256 element extended wavelength array (970-1900nm)

256 element extended wavelength
array (1900-2500nm)

FOV Options
Stray light4°, 8°, or 14° lens, 25° fiber optic, 4°, 8°, or 14° lens, 25° fiber
4°, 8°, or 14° lens, 25° fiber
diffuser, integrating sphere
optic, diffuser, integrating sphere optic, diffuser, integrating sphere
0.10%0.10%

0.10%

100 milliseconds

100 milliseconds

100 milliseconds

0.1nm

0.1nm

0.1nm

±0.5 bandwidth±0.5 bandwidth±0.5 bandwidthUSB, BluetoothUSB, BluetoothUSB, Bluetooth

8.5” x 11.5” x 3.25”

8.5” x 11.5” x 3.25”

8.5” x 11.5” x 3.25”

2 each ¼-20 mounting holes
provided

2 each ¼-20 mounting holes
provided

2 each ¼-20 mounting holes
provided

Weight7.3 lbs

7.3 lbs

7.3 lbs

Batteries

Two lithium ion; 7.4V

Two lithium ion; 7.4V

Two lithium ion; 7.4VBattery Operation

Removable battery; minimum 2
hour operation

Removable battery; minimum 2
hour operation

Removable battery; minimum 2
hour operation

On board memory

Storage of 500 spectra

Storage of 500 spectra

Storage of 500 spectra

Minimum Scan Speed
Wavelength Reproducibility
Wavelength Accuracy
Communications interface
Size
Tripod mounting

90 Sutton Street ◊ Unit 4
North Andover, MA 01845 USA
Tel: 978 687-1833 ◊ Fax: 978 945-0372
sales@spectralevolution.com
www.spectralevolution.com

SPECTRAL EVOLUTIONPSM Series Portable Spectrometers
The features you want– the high spectral resolution
and sensitivity you need!

Fast, full featured and flexible– SPECTRAL EVOLUTIONPSM Series Spectrometers are compact and easy tocarry, set up and use– Precise and powerful to analyze
the most demanding geological samples!
abcd

SPECTRAL EVOLUTION PSM Series Portable Spectrometers come with full controls and a removable
LiIon battery (a) for stand-alone data acquisition of up
to 500 spectra without a computer. Weighing in atless than 8 pounds, all PSM Series units are small,lightweight and easy to carry and use. Units come witha hand strap and include reinforced hardware forshoulder straps (b) or for tripod mounting (c). Units
can be ordered with a screw mount FOV lens (4, 8 or14°) or with a removable fiber optic attachment touse with an illuminating reflectance probe (b, d) orintegrating sphere (optional). For true portability,
PSM Series Spectrometers can also be ordered with alightweight backpack (d) or foam padded travel casewith or without wheels. All PSM Series Spectrometers
have both USB and wireless Bluetooth connectivity forremote sensing applications. For easy data processing in the field, we also offer the Getac PS236 ruggedized PDA (d). The PS236 features built in SiRFstar III
GPS, 3 megapixel autofocus camera, e-compass,altimeter and high visibility 480x640 pixel VGA display. Each Getac PS236 comes fully loaded with ourexclusive DARWin CE Mobile-compatible software
package to view and tag scans and control the spectrometer via wireless Bluetooth interface.

► Fast, full spectrum UV-VIS-NIR measurements–
350-2500nm with just one scan

► Lightweight powder-coated aluminum case with low profile► All 100% diode array optics with no moving
gratings for improved field reliability► Software for both Windows-based laptops and Bluetooth—heat exchanger for added durability and temperature stability
compatible personal digital assistant (PDA) for maximum
flexibility► Integral dark shutter for convenient, accuratescans► Membrane control panel for stand-alone operation without► Bluetooth interface for wireless, remote sensing

a computer connection– internal memory holds up to 500
scans!

► High capacity Li-Ion Rechargeable batteries
slide right into the unit– no heavy external batteries to carry around.

► Nylon carrying strap with sturdy, reinforced eyelets foradded security

SPECTRAL EVOLUTION PSM Series Spectrometers use firmly attached diffraction grating-based internal optics with multiple photodiode array detectors. This ensures both high sensitivity and resolution without having to use light-robbing internal fiber optics, ultranarrow slits or moving gratings & prisms that can get knocked out of alignment. PSM-Series Spectrometers can collect spectra in as
little as 100 milliseconds. The exclusive DARWin SP Data Acquisition Module included with each unit allows for full featured instrument control and data handling and is compatible with UNSCRAMBLER for further data manipulation. LABVIEW drivers are also available (please inquire). In the chart below, the PSM-3500 was used to measure reflectance of kaolinite (purple), illite (green), montmorillonite (red) and SRM-1920 (cyan). The DARWin SP Data Acquisition Module allows multiple scans to be charted simultaneously foreasy data analysis