Portable Cooled Raman Spectrometer

DTR3000

FEATURES

Ø Ultra-high sensitive FFT-CCD with TEC cooling;

Ø Ultra-low noise circuit;

Ø Powerful embedded software;

Ø Fluorescent background eliminate;

Ø Peak searching and indicating;

Ø 10.1’’ LCD;

Ø Android 4.0 OS;

Ø USB 2.0;

Ø Touch operation;

Ø Friendly HMI;

Ø Battery Endurance > 3 hours;

Ø Remote control via LAN;

Ø IP67 case;

APPLICATIONS

Ø Biological science

Ø Pharmaceutical engineering

Ø Forensic analysis

Ø Agriculture and food safety

Ø Gemstone

Ø Environmental science

 

GENERAL DESCRIPTION

DTR3010 portable Raman spectrometer is suitable for field operation. The outstanding reliability makes the detection result much accurate. The excellent low stray light conditions that enable the spectrometer has a wide range of application, especially in the biochemical analyzer, food safety, pharmaceutical engineering. The multi-function software facilitated the spectral analysis process in application. The remote experiment through internet access makes the bald test item much easier.

 

1 Specifications

DTR3010 System
Interface	USB 2.0/LAN
OS	Android 4.4.2
Battery endurance	>3 h
Integration time	4ms - 120s
Supply voltage	DC 19V(+/-5%)
Operating temperature	5~40 ℃
Operating humidity	< 95%
Size (L*W*H)	30×22.5×13.2 cm3
Weight	7.5 Kg
Reliability
Spectral stability	σ/μ < 0.5%  (COT 8 hours)
Temperature stability	Spectral shift ≤ 1 cm-1 (10-40 ℃)
Variation of Spectral intensity in 5 ~ 40 ℃	<±5%
Optics Parameter
Spectral region	250-2400 cm-1
Spectral resolution	2 cm-1@900nm
Signal-to-Noise	>3000:1 (918 cm-1 of Acetonitrile,10s accumulation, 200mW)
Incidence slit	50 μm
Optical system	f/4 Crossed Symmetrical Czerny-Turner
Focal length	98 mm for incidence and output
Detector
Type	Ultra-high sensitive FFT-CCD with TEC cooling
Detectable range	200-1100 nm
Effective pixel	2048*64
Dynamic range	50000:1
Pixel dimension	14μm×14μm
Full well capacity	300 Ke-
Sensitivity	QE>40%, 6.5 μV/e-
Exciting Laser
Center Wavelength	785nm (±0.5nm)
FWHM	0.08 nm
Output power	≥500 mW
Power stability	σ/μ <±0.2%
Raman Probe
Working distance	6 mm
Rayleigh scattering resistance	OD>8
Numerical Aperture	0.3
Aperture	7mm

 

2 Optical Performance

2.1 General spectral performance

Figure 1 Raman spectra of acetonitrile

 

Excited laser intensity: 200 mW

Integrate time: 5 s

Boxes car: 3 times

 

Spectral range: 250-2400 cm^-1

918 cm^-1 FWHM: 9 cm^-1

918 cm^-1 intensity: 28886 count

Noise: 89 count

S/N: 324

 

Figure 2 Sensitive of DTR3010 vs DTR2000

Figure 3 Noise of DTR3010 vs DTR2000

2.2 Spectral Resolution

2.2.1 Raman spectral of Tylenol

Fig.2.2 Raman spectrum of Tylenol,the vibration mode 1610/1615 cm^-1 can be resolved.

 

Excited laser intensity: 200 mW

Integrate time: 10 s

Boxes car: 1 time

Raman spectra of Tylenol showed the resolution condition in the long wavelength region. That is better than 6 cm^-1.

2.2.2 Raman spectral of petrol

Fig.2.3 Raman spectrum of petrol 93#, the vibration mode 723/732/742cm^-1 can be resolved.

 

Excited laser intensity: 200 mW

Integrate time: 10 s

Boxes car: 1 time

 

Raman spectra of petrol 93# showed the resolution condition in the short wavelength region.

3 Reliability

    Figure 3.1 and Figure 3.2 showed the temperature reliability testing results of fives DTR3010 portable Raman spectrometers. The testing temperature range was from 5 ^oC to 40 ^oC. The spectrometer was kept more than 1 hour at every temperature spots. Acetonitrile was used as the standard sample in the testing. The testing results were calculated using 918 cm^-1 of acetonitrile. The wavenumber shift was 1 cm^-1 or less(as show in Fig. 3.1). The peak intensity variation was less than 10% (as show in Fig. 4).

Fig. 3.1 Wavenumber shift results testing from 5 ^oC to 40 ^oC of fives DTR3010 portable Raman spectrometers

Temperature range: 5-40 centigrade

Wavenumber shift: < 1 cm^-1

Figure 4 Intensity variation testing from 5 ^oC to 40 ^oC of three DTR3010 portable Raman spectrometers

Figure 5 Intensity variation -10 ^oC to 40 ^oC of DTR3010 portable Raman spectrometers, sample is alcohol.