gas_handling_system
Differences
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| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
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gas_handling_system [2017/01/31 12:03] pereira [Filling Ion Chamber with Gas] |
gas_handling_system [2017/06/07 13:15] pereira |
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| * The display unit for the pressure at the pump has a needle indicator and is mounted under the [[Stations# | * The display unit for the pressure at the pump has a needle indicator and is mounted under the [[Stations# | ||
| * Ensure that the main valves on the gas bottles are open (see pictures below) | * Ensure that the main valves on the gas bottles are open (see pictures below) | ||
| + | * Open valves downstream of regulators in each bottle | ||
| * Ensure that the gas bottles are not empty | * Ensure that the gas bottles are not empty | ||
| * The gas regulators are not normally adjusted. They should all be set to provide a pressure around 20 psi | * The gas regulators are not normally adjusted. They should all be set to provide a pressure around 20 psi | ||
| Line 79: | Line 80: | ||
| * Click on the tab labeled **Slot 8 (M-card) IC** to access the page with the pressure set point control | * Click on the tab labeled **Slot 8 (M-card) IC** to access the page with the pressure set point control | ||
| * Enter the desired pressure (typically 300 Torr) in the field under the knob labeled Set Point | * Enter the desired pressure (typically 300 Torr) in the field under the knob labeled Set Point | ||
| - | * Click button labeled **AUTO Mode** on left to start filling/ | + | * Click button labeled **Update Set Point** |
| + | * Click button labeled **Return to AUTO Mode** on left to start filling/ | ||
| * Click the **Valves** tab at the top of the LabView window to return to the overview display of the gas handling system to monitor filling. The flow readings for MFC #1 will increase and eventually disappear as the readout value overflows the display field (this is normal behavior) | * Click the **Valves** tab at the top of the LabView window to return to the overview display of the gas handling system to monitor filling. The flow readings for MFC #1 will increase and eventually disappear as the readout value overflows the display field (this is normal behavior) | ||
| - | * If necessary, the filling process can be stopped at any time by pressing the valve button labeled **Close MFC #1** | ||
| * Open **valve 9** | * Open **valve 9** | ||
| + | * If necessary, the filling process can be stopped at any time by pressing the valve button labeled **Close MFC #1** | ||
| * The filling process will take several minutes | * The filling process will take several minutes | ||
| Line 111: | Line 113: | ||
| * Fill CRDCs | * Fill CRDCs | ||
| * Enter the desired fill pressure and start the automatic filling process | * Enter the desired fill pressure and start the automatic filling process | ||
| - | * Click the **Zero Sensor** button | ||
| * Click on the tab labeled **Virtual Ch. 0 (CRDC)** to access the page with the pressure set point control | * Click on the tab labeled **Virtual Ch. 0 (CRDC)** to access the page with the pressure set point control | ||
| * Enter the desired pressure (typically 40 Torr) in the field under the knob labeled **Set Point** | * Enter the desired pressure (typically 40 Torr) in the field under the knob labeled **Set Point** | ||
| + | * Click button labeled **Update Set Point** | ||
| * Click button labeled **Return to AUTO Mode** on left to start filling/ | * Click button labeled **Return to AUTO Mode** on left to start filling/ | ||
| * Click the **Valves** tab at the top of the LabView window to return to the overview display of the gas handling system to monitor filling. The flow readings for MFC #2 and MFC #3 will increase. The LabView application controls the gas mixing ratio based on the flow ratio (scaled with a calibration constant) | * Click the **Valves** tab at the top of the LabView window to return to the overview display of the gas handling system to monitor filling. The flow readings for MFC #2 and MFC #3 will increase. The LabView application controls the gas mixing ratio based on the flow ratio (scaled with a calibration constant) | ||
| - | * If necessary, the filling process can be stopped at any time by pressing the valve button labeled **Close MFCs #2 & #3** | ||
| * Open **valve 25** | * Open **valve 25** | ||
| + | * If necessary, the filling process can be stopped at any time by pressing the valve button labeled **Close MFCs #2 & #3** | ||
| * The filling process will take several minutes | * The filling process will take several minutes | ||
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| * Open **valves 6 and 22** | * Open **valves 6 and 22** | ||
| - | * Enter S3 vault and close main valves | + | * Enter S3 vault and close valves |
| ===== Tracking Gas bottles pressures ===== | ===== Tracking Gas bottles pressures ===== | ||
gas_handling_system.txt · Last modified: 2023/05/11 11:29 by pereira
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