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vacuum_controll

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vacuum_controll [2026/05/08 09:40] – [TPG 361] simonvacuum_controll [2026/05/09 12:36] (current) – [Pressurization Checklist] ari
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 As a solenoid valve funtions the **0211** from Bürkert,  it is a normally closed device, meaning applying energy will open the device. If it's Powered on it connects the pump to the chamber. Furthermore, the vacuum pump and the solenoid valve are both controlled via the PDU, while the single gauge is controlled via a LabVIEW Script via the server. As a solenoid valve funtions the **0211** from Bürkert,  it is a normally closed device, meaning applying energy will open the device. If it's Powered on it connects the pump to the chamber. Furthermore, the vacuum pump and the solenoid valve are both controlled via the PDU, while the single gauge is controlled via a LabVIEW Script via the server.
  
-===== Starting Procedure =====+===== Depressurization Checklist ===== 
 + 
 +  - Ensure that cryocooler is off and cryostat is at room temps! 
 +  - Turn on main power switch on HiCube Eco 80 
 +  - Wait for DCU to complete self-test of system 
 +  - Check if venting is off under parameter 012 “Enable vent” => off 
 +  - Turn on roughing pump: Select parameter 010 “Pumping station” => on  
 +  - Once we reach pressures !!< 5 mbar!!, select parameter 023 “ motor pump” and turn on turbomolecular pump 
 +  - Ideally, we want pressure to drop to lower 10^(-6) mbar range  
 + 
 + 
 + 
 + 
 +===== Pressurization Checklist ===== 
 + 
 +  - Turn cryocooler off and wait for temperatures to reach ~ 280 K 
 +  - Turn off Turbomolecular pump and wait for RPMs to go to zero 
 +  - Turn off roughing pump 
 +  - Vent the system 
  
-First turn the vacuum pump on, and then make sure that the Turbomolacularpump is turned off. Only start the vacuum pump when you are sure that the Turbo is off, then start the compressor pump, when the pressure reaches the lower single digits (5 mbar >) turn the Turbomolacularpump on. 
 ===== TPG 361 ===== ===== TPG 361 =====
 The pressure within the Cryostat is monitored with a **Single Gauge TPG361** from **Pfeiffer Vaccum**, which uses a PKR 251 FPM-sealed, DN 25 ISO-KF gauge sensor. The maximum pressure applies to inert gases and temperatures below 55 °C and is corrosion resistant. The TPG361 is designed for installation to a 19“ rack chassis adapter according to DIN 41494 and provides serial communication via R485 (24V, 5-pin circular), USB and Ethernet interfaces.It is used to measure the pressure inside the chamber. The pressure within the Cryostat is monitored with a **Single Gauge TPG361** from **Pfeiffer Vaccum**, which uses a PKR 251 FPM-sealed, DN 25 ISO-KF gauge sensor. The maximum pressure applies to inert gases and temperatures below 55 °C and is corrosion resistant. The TPG361 is designed for installation to a 19“ rack chassis adapter according to DIN 41494 and provides serial communication via R485 (24V, 5-pin circular), USB and Ethernet interfaces.It is used to measure the pressure inside the chamber.
vacuum_controll.1778226001.txt.gz · Last modified: by simon

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