DTR2000 Portable Raman Spectrometer

GENERAL DESCRIPTION

DTR2000 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.

FEATURES

1.linear CCD with TEC cooling;

2.low noise circuit;

3.Powerful embedded software;

4.Fluorescent background eliminate;

5.Peak searching and indicating;

6.10.1’’ LCD;

7.Android Operation System;

8.USB 2.0;

9.Touch screen  and Keyboard input;

10.Friendly HMI;

11.Battery Endurance > 5 hours;

12.Remote control via LAN;

13.IP67 case;

 

APPLICATIONS

1.Biological science

2.Pharmaceutical engineering

3.Forensic analysis

4.Agriculture and food safety

5.Gemstone

6.Environmental science

 

1 Specifications

DTR2000 System
Interface	USB 2.0/LAN
OS	Android 4.4.2
Battery endurance	>5 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 Kg
Reliability
Spectral stability	σ/μ < 0.5%  (COT 8 hours)
Variation of Spectral intensity in 5 ~ 40 ℃	<±5%
Optics Parameter
Spectral region	250-2400 cm-1
Spectral resolution	6 cm-1
Signal-to-Noise	>200:1 (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	Linear Array Detector
Detectable range	200-1100 nm
Effective pixel	3648
Dynamic range	1300:1
Pixel dimension	8μm×200μm
Full well capacity	100 Ke-
Sensitivity	130 Photon @ 400 nm; 60 Photon @ 600 nm
Exciting Laser
Center Wavelength	785nm (+/-1nm)
FWHM	0.1 nm
Output power	≥450 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

Excited laser intensity: 200 mW

Integrate time: 10 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

 

Fig. 2.1 Raman spectra of acetonitrile

2.2 Spectral Resolution

2.2.1 Raman spectral of Tylenol

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.

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

2.2.2 Raman spectral of petrol

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.

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

3 Reliability

Figure 3.1 and Figure 3.2 showed the temperature reliability testing results of fives DTR2000 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 DTR2000 portable Raman spectrometers

Fig. 3.2 Intensity variation testing from 5 oC to 40 oC of fives DTR2000 portable Raman spectrometers