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| Product Name | Yoke UV752N spectroPhotoMeter | YUEFENG 770S UV-Visible SpectroPhotometer |
| Product Price | In coming | $2591.00 |
| Details | Details | |
| Model comparison | ||
| Spectral Type | UV-Vis | UV-Vis |
| Optical Path | Single-Beam | Pseudo-Double-Beam |
| Dispersion | Grating | Grating |
| Detection | Scanning | Scanning |
| Light Source | Tungsten Deuterium | Tungsten Deuterium |
| Wavelength | 190-1100nm | 190-1100nm |
| Accuracy | ≤2nm | ≤0.5nm |
| Bandwidth | 2-4nm | ≤2nm |
| Detector | Phototube | |
| Stray Light | ≤0.5%T | ≤0.2%T |
| Parameter comparison | ||
| Optical inspection system | Eliminate color difference Czerny-Turner (1200L/mm grating) | Proportional double beam of light, 1200/mm Holographic grating |
| Light spectrum bandwidth | 4nm | |
| wavelength Range | 195~1020nm | |
| Wavelength accuracy | ±2nm | |
| Wavelength, repeability | 1nm | |
| Photometric Range | 0~200%T、-0.301~2.000A | 0.0%(T)~200.0%(T)；-0.301~4.000(A) |
| Photometric accuracy | 0.5%T | |
| Luminosity, sexual repeability | 0.2%T | |
| stray light | ≤0.3%T@360nm | ≤ 0.15% (T) (at 220 nm, as NaI) (at 360 nm, as NaNO2) |
| Noise level | 100%≤0.2%T | 100%(T):≤0.2%(T) 0%(T):≤0.1%(T) |
| stability | ±0.002A/h@500nm | |
| Baseline flatness | ±0.002A/h @500nm | ±0.002A(200nm~1090nm) |
| Operating Mode | T、A、C | |
| printout | Thermal printer (parallel port) optional | RS232 printing interface |
| display | 4-Bit LCD LED display | |
| Illuminant | Imported tungsten lamp, imported deuterium lamp | Deuterium lamp, tungsten halogen lamp |
| dimensions | Length 50cm, Width 33cm, Height 30cm | |
| weight | 12kg | |
| drift | ≤0.1%T | ≤ 0.0009A/0.5h (2h after startup, 250nm, 500nm) |
