Vessels
The Vessel object class is for vessels, also called dewars, which mobile tanks specially made for storing liquid helium or nitrogen. They are insulated and therefore they keep the Helium at a low temperature passively.
The vessel class has a position type of 2 and no display priority.
Example of a vessel:
The amount of gas in vessels is measured in liquid litres.
The Vessel object class has two object types by default: Helium Vessel default and Nitrogen Vessel default. These are default types for vessels storing liquid helium and nitrogen, respectively. Both object types have the value of OT_VOLUME at 100.
| Attribute | Type | Note |
|---|---|---|
| OB_ID | integer | |
| OB_OBJECTTYPE_ID | integer | |
| OB_NAME | string | |
| OB_COMMENT | string | |
| OB_POSINFORMATION | string | |
| OB_ACTIVE | boolean | 1 = is on campus (changed by balance program) |
| OB_MINVALUE | double | Resistance in Ohm |
| OB_MAXVALUE | double | Resistance in Ohm |
| OB_CRITVALUE | double | minimum level for autofill in % |
| OB_TARE | double | Tare in kg |
| OB_SPAN1 | double | analog pressure sensor |
| OB_ZERO1 | double | analog pressure sensor |
| OB_ENABLED2 | boolean | parameters valid |
| OB_ENABLED3 | boolean | display reversed |
| OB_SHORTINTERVAL | integer | short measurement interval in s (filling) |
| OB_LONGINTERVAL | integer | long measurement interval in minutes (normal) |
| OB_QUENCHTIME | integer | in ms |
| OB_QUENCHCURRENT | integer | in mA |
| OB_WAITTIME | integer | in ms |
| OB_MEASCURRENT | integer | in mA |
| OB_ADCLOOP | integer | number of cycles for integrations (40 is o.k.) |
| OB_FILLTIMEOUT | integer | timeout for autofill in minutes |
| OB_INSTALLED | TDateTime | |
| OB_SERNO | String |