There are many applications where the accurate, repeatable measurement of gas density is essential. From blending of fuel, to product quality, to Hydrogen purity and replacement in utility turbines, Yokogawa's family of Gas Density products allow you to make accurate measurements with superior reliability and ease of maintenance and operability.
The Model GD402 gas density analyzer and Model GD40 detector not only provide continuous measurement of gas density, but also several other valuable parameters, including specific gravity and molecular weight. The GD40 detector is designed for intrinsically safe and flameproof, explosion protected applications. It is designed to be virtually maintenance free for all accepted applications.
The Model GD402 is a rugged microprocessor-based converter designed in two versions to meet both general area and explosion-proof application requirements. In addition to the display of several key data items, the converter also provides the choice of three different means for calibration: automatic; semi-automatic and one-touch manual operation.
- Proven Design
- Many detector features
- Simple, user-friendly interface
- Low installation cost
Measuring object | Gas density of all gases except for corrosive and acetylene gas | ||||||
Measuring principle | Vibration type (resonant frequency) | ||||||
Sample gas conditions |
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Measuring range | Gas density: 0 to 6 kg/m3 | ||||||
Output signal |
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Contact output | Signals for Maintenance, Fail, Hi/Low alarm | ||||||
Contact input | Signal for switching between the Hydrogen Purity meter and the Replacement meter | ||||||
Calibration | Manual(one-touch), Semi-automatic, Automatic calibration | ||||||
Explosion-proof approval Converter |
Rain-proof for outdoor use, equivalent to IP65 / NEMA 4X Ambient temperature :-10 to 55℃ Ambient humidity : 5 to 95%RH
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Explosion-proof approval detector |
Rain-proof for outdoor use, equivalent to IP65 / NEMA 4X Ambient temperature :-10 to 60℃ Ambient humidity : 5 to 95%RH
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Power supply | 100 to 240 V AC, 24V DC, 50/60 Hz |
Performance
Linearity | ±1% of F.S. |
Repeatability | ±0.001 kg/m3 or ±0.5% of F.S. whichever is greater |
Long term stability | ±0.003 kg/m3 per month |
Response time 90% | Approx. 5 sec |
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