Helium Level Module
The Helium Level module class is a generic class for all readout modules used for any third party level meter. These modules are the communications devices that are used to transmit the data from the devices such as the cryostats to the HLM server through the base stations.
The Helium Level module class has a position type of 2.
Helium content is measured in liquid litres (meaning amount of Helium gas equivalent to that volume of Helium liquid).
| Measurement number | Parameter being measured | Unit |
|---|---|---|
| 1 | CH1 Level (Helium) | % |
| 2 | CH2 Level (optional, LN2) | % |
| 3 | Ch3 Level (optioanl, LN2) | % |
| 4 | not used | |
| 5 | Helium content | litres |
By default, the Helium Level MODULE object class has two object types, ILM module default and Software Level Device.
The ILM module default type is the default type used for the communications devices that are used to transmit the data from the cryostats to the HLM server through the base stations. The modules are connected to the cryostat through a wired connection and communicate with the base stations wirelessly.
Example of an ILM module:
Software level device is a program that reads out the helium or nitrogen levels and stores them into the database in the same way as an ILMmodule.