Global Power Technologies START-UP AND OPERATION
302842 Rev0 | Sentinel Page 25 of 61
4.1.3 TARGET OPEN CIRCUIT VOLTAGE CALCULATION
Figure 15 – Data Plate OCV
Once the correction factors have been determined, check the Sentinel TEG’s data plate for the
factory OCV and calculate the target OCV using the formula:
Target OCV = (Factory Set OCV) x (Temperature Correction Factor) x (Altitude Correction Factor)
Example Calculation:
If:
Data Plate OCV = 24 VDC
Current Ambient Temperature = 35°C Temperature Correction Factor = 0.975
Altitude = 0m above sea level Altitude Correction Factor = 1.05
Then:
Target OCV = 24 x 0.975 x 1.05
Target OCV = 24.57 VDC
Note the calculated target OCV in the Performance Log. This will be used during fuel pressure
adjustment—Section 4.3.3.
To maximize the longevity of the Sentinel TEG, do not adjust OCV above 26 VDC.
CAUTION!
Operating the Sentinel TEG with OCV above 26 VDC could adversely affect the
longevity of the unit. Contact GPT if the Sentinel TEG needs to be set above this
point.
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