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GPro 500 Moisture Sensor
Features
- Tunable Diode Laser spectroscopy
- Simple installation
- In situ measurement
- SpectraID technology
- Low nitrogen purging consumption
- Predictive ISM diagnostics
Direct measurements in the gas stream
The GPro 500 Moisture TDL allows drift-free, virtually maintenance-free operation in dry storage applications by allowing the measurement of water vapor at ppm levels to protect your assets from corrosion damage in applications including:
Process control
Cl2 storage
EDC storage
Features and Benefits
Tunable Diode Laser spectroscopy
Dependable, industry-proven technology
Simple installation
Thanks to probe design and single flange connection
In situ measurement
Direct measurements in the gas stream are fast and reliable
SpectraID technology
For highly reliable O2 measurement
Low cost of ownership
No sampling or conditioning equipment. Annual verification and periodic optics cleaning are the only maintenance
Low nitrogen purging consumption
For lower operation costs
Predictive ISM diagnostics
Continually monitor optical path quality to determine when cleaning will be required
Specifications & Spare Parts
| Effective path length | Probes: 100, 200, 400 mm (3.94″, 7.87″, 15.75″) Wafer cell: 50, 80, 100 mm (1.96″, 3.15″, 3.94″)Extractive cell: 200, 400, 800, 1000mm, 10m |
| Lower Detection Limit | 5 ppm-v |
| Measurement range | 0-200,000 ppm (0-2%) |
| Accuracy | 2% of reading or 10 ppm, whichever is greater |
| Linearity | Better than 1% |
| Resolution | 5 ppm-v |
| Drift | Negligible (<2% of measurement range between maintenance intervals) |
| Sampling rate | 1 second |
| Response time (T90) | H2O in N2 1% to 0% in <4 sec |
| Repeatability | ±0,25% of reading or 50 ppm-v O2 (whichever is greater) |
| Process pressure range | 0.8 bar – 2 bar (abs)/11.6 psi – 29. psi (abs) |
| Process temperature range | 0-250 ºC(32-482 ºF) Optional(for probe instalation) 0-600 ºC (0-1112 ºF) with additional thermal barrier |



