Setting the purge gas controls
You must connect a source of purge gas (dry air or nitrogen) to purge your instrument of moisture and other environmental contaminants. For best results, the purge gas should be dried to a dew point of -70 °C (-94 °F) or below. Use the following instructions to set the purge gas controls.
| We recommend that you maintain seal and desiccation and/or purge your instrument at all times. Equipment damage due to failure to maintain seal and desiccation and/or purge is not covered under the warranty. If you have questions about this requirement, please contact us. |
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Avoid hazard. Never use a flammable gas to purge your instrument. The purge gas must be free of moisture, oil, carbon dioxide, and other reactive or infrared-absorbing materials. To prevent laser damage, use only dry air or nitrogen to purge your instrument. |
- Open the shutoff valve.
- Adjust the pressure regulator until the gauge indicates that the pressure is between 0.7 and 1.4 bar (70 to 140 kPa, or 10 to 20 psig).
| Flow rates greater than 10 scfh can cause vibration that can affect data quality. We recommend keeping the flow rate at approximately 10 scfh. |
- Set the flowmeter to 10 scfh.
