
The GPro 500 hydrogen sulfide (H2S) gas analyzer is a unique tunable diode laser spectrometer designed for direct measurement of H2S in gas streams. It uses a folded-path laser beam design for simple installation and accurate H2S measurement.
Top Performance in H2S Measurement
An H2S analyzer for challenging applications, the GPro 500 provides a reliable measurement in catalytic reformers and coke oven gas measurements.
Low Maintenance and Operating Costs
This H2S gas analyzer is designed to operate in situ without a maintenance-prone conditioning system, reducing the total cost of ownership.
Easy Installation
The GPro 500 is an alignment-free TDL gas analyzer, meaning that the typical challenges of TDL installation and alignment are significantly reduced.
Gas Measured | Hydrogen sulfide |
Lower Detection Limit | 20 ppm-v |
Measurement range | 0-50% |
Accuracy | 2% of reading or 20 ppm, whichever is greater |
Linearity | Better than 1% |
Resolution | 20 ppm-v |
Drift | Negligible (<2% of measurement range between maintenance intervals) |
Sampling rate | 1 second |
Response time (T90) | H₂S in N₂ 1% to 0% in <4 seconds |
Repeatability | ±0.25% of reading or 100 ppm-v H₂S (whichever is greater) |
Process pressure range | 0.8 bar - 3 bar (abs)/11.6 psi - 29 psi (abs) |
Process temperature range | 0-250 °C (23-482 °F); optional (for probe installation) <br>0-600 °C (0-1112 °F) with additional thermal barrier |
Effective path length | 50 mm - 10 m, depending on adaption |
Process Adaption or Sensor | Sensor |