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installation_fp_sci [2023/08/18 10:17]
noji [Zeroing PTs]
installation_fp_sci [2023/08/18 10:19] (current)
noji [Zeroing PTs]
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   * When readings of the capacitance manometers (PT1 [S800_GHS:CMG_D2708A:VP_RD], PT2 [S800_GHS:CMG_D2703A:VP_RD], and PT3 [S800_GHS:CMG_D2708C:VP_RD]) are off (e.g. 1 Torr when pumped down), these need to be zeroed.   * When readings of the capacitance manometers (PT1 [S800_GHS:CMG_D2708A:VP_RD], PT2 [S800_GHS:CMG_D2703A:VP_RD], and PT3 [S800_GHS:CMG_D2708C:VP_RD]) are off (e.g. 1 Torr when pumped down), these need to be zeroed.
-  * The relevant PVs are "ZERO_CMD" instead of "VP_RD", e.g. S800_GHS:CMG_D2708A:ZERO_CMD for PT1. Send "1" to zero these PTs. 
   * **Before “zeroing” a pressure gauge. Make sure it is completely bottomed out.** This would correspond to the GHS being in “Vent” mode and the TMP being on. If the IG is on and shows that the system is under High Vacuum (<10-3 Torr) you can go ahead and zero the gauge.   * **Before “zeroing” a pressure gauge. Make sure it is completely bottomed out.** This would correspond to the GHS being in “Vent” mode and the TMP being on. If the IG is on and shows that the system is under High Vacuum (<10-3 Torr) you can go ahead and zero the gauge.
-  * Here are instructions by Josh:+  * Here are instructions with screenshots by Josh:
     * {{::zeroingpressuregauges1.png|}}     * {{::zeroingpressuregauges1.png|}}
     * {{::zeroingpressuregauges2.png|}}     * {{::zeroingpressuregauges2.png|}}
     * {{::zeroingpressuregauges3.png|}}     * {{::zeroingpressuregauges3.png|}}
 +  * The relevant PVs are "ZERO_CMD" instead of "VP_RD", e.g. S800_GHS:CMG_D2708A:ZERO_CMD for PT1. Send "1" to zero these PTs.
  
 ====== Opening/closing FP chamber ====== ====== Opening/closing FP chamber ======
installation_fp_sci.txt · Last modified: 2023/08/18 10:19 by noji