Batteries; Dry Gas Vent - Thermo Scientific Prima PRO User Manual

Batteries

Dry Gas Vent

Thermo Fisher Scientific
the system from a controller failure a pair of independent thermal
cutout switches (140°C) is fitted to the RMS body.
The inlet temperature alarm (GasWorks software interface) should be
monitored as this will give an indication that the thermal switches
have tripped. Also, the temperature will oscillate in the 120°C to
140°C region.
The enclosure temperature is monitored by the air conditioner, which
generates an alarm when the temperature is outside the control
window, and an independent temperature sensor, which triggers an
alarm at 40°C.
There are two batteries fitted within the instrument enclosure.
Table A–7. Battery types within the instrument enclosure
Processor Assembly
(Thermo Scientific supply)
Turbo Molecular Pump
(3rd party supply)
Warning!
Neither of these batteries is likely to need replacement during

the lifetime of the instrument or pump respectively.
If a problem occurs, the complete assembly should be

replaced.
No attempt should be made to replace the batteries.

See also the Battery Warning label on the inside of the

instrument door.
All Prima PRO and Sentinel PRO systems have a dry gas vent
connection. Nitrogen (other inert dry gases could be used) is
connected to the vent port on the vacuum system (via a regulator).
When the vacuum system shuts down, it fills with the dry gas (rather
than ambient air). This facilitates a much faster subsequent pump
down.
For hazardous area systems, the dry gas vent has an additional
function. While the system is shut down it is possible for hazardous
Prima PRO & Sentinel PRO Mass Spectrometers User Guide
Hazardous Area Operation
Other Hazardous Area Considerations
Lithium thionyl chloride (Li/SOCl
Type ½ AA
Nominal 1.2Ah
capacity
Nominal voltage 3.6V
Lithium manganese dioxide (Li/MnO
Type Coin cell
Nominal 48mAh
capacity
Nominal voltage 3V
)
2
)
2
A-17