Method 2 - Hydrogen Analysis

Platinum

Preparation

Rate of temperature increase = 10 °C per minute
Vacuum set point = 10 µmHg
Task No. Action Ramp Rate
(°C / min)
Temperature
(°C)
Time
(Minutes)
1 Flow helium 10 200 10
2 Evacuate, no backfill   100 10
3 Flow hydrogen 10 400 30
4 Evacuate, no backfill   400 30
5 Evacuate, no backfill 10 35 60
6 Leak test, outgas rate
limit = 10 µmHg/min
  35
7 Evacuate, no backfill 10 35 10

Analysis

Requires repeat analysis.

Gas: Hydrogen
Temperature: 35 °C
Heat rate: N/A
   
Equilibration interval: 10 sec
Relative target tolerance: 5.0%
Absolute target tolerance: 5.0 mmHg
   
Repeat analysis: Yes
Fast evacuation: No
Unrestricted evac pressure: 30 mmHg
Evacuation time: 30 min (experience may indicate the need for a longer evac time)
   
Free space: Measure
Incremental dosing: No
Line fit: Enabled for all pressure points
Pressure table (mmHg): 200, 250, 300, 350, and 400

Paladium

Preparation

Rate of temperature increase = 10 °C per minute
Vacuum set point = 10 µmHg
Task No. Action Ramp Rate
(°C / min)
Temperature
(°C)
Time
(Minutes)
1 Evacuate 10 100 30
2 Flow oxygen   100 5
3 Flow oxygen 10 350 30
4 Evacuate   350 15
5 Evacuate 10 100 15
6 Flow hydrogen   100 5
7 Flow hydrogen 10 350 120
8 Evacuate   350 30
9 Evacuate 10 35 30
10 Analysis   35  

Analysis

Gas: Hydrogen
Temperature: 100 °C
Heat rate: N/A
   
Equilibration interval: 10 sec
Relative target tolerance: 5.0%
Absolute target tolerance: 5.0 mmHg
   
Repeat analysis: Yes
Fast evacuation: No
Unrestricted evac pressure: 30 mmHg
Evacuation time: 30 min
   
Free space: Measure
Incremental dosing: No
Line fit: Enabled for all pressure points
Pressure table (mmHg): 120, 155, 190, 225, and 260

Nickel

Preparation

Rate of temperature increase = 10 °C per minute
Vacuum set point = 10 µmHg
Task No. Action Ramp Rate
(°C / min)
Temperature
(°C)
Time
(Minutes)
1 Evacuate 10 100 30
2 Evacuate 10 450 5
3 Flow oxygen   450 120
4 Evacuate   450 30
5 Evacuate 10 35 30
6 Analysis   35  

Analysis

Gas: Hydrogen
Temperature: 35 °C
Heat rate: N/A
   
Equilibration interval: 10 sec
Relative target tolerance: 5.0%
Absolute target tolerance: 5.0 mmHg
   
Repeat analysis: Yes
Fast evacuation: No
Unrestricted evac pressure: 30 mmHg
Evacuation time: 30 min
   
Free space: Measure
Incremental dosing: No
Line fit: Enabled for all pressure points
Pressure table (mmHg): 100, 150, 200, 250, and 300
 
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