________________________________________________
_______________________________________________
Instruction Manual MM850341 ed.01a
___________________________________________31____________________________________________
Air purge system with 1” ½ BSPP F adapter cat. EE290079
Air purge system cat. EE290077
It's important to use very clean air to prevent dirt from depositing on the main lens. Every particle in the air could
obstruct part of the diffuser, and modify the aerodynamic characteristics in the air flux. So, the flux would be
modified, and dirt air could reach the lens. The air system must be periodically checked. To add a filtering system
is strongly recommended.
Eurotron
can supply an air filtering system (cod. EE290015) to be used on the already present air network. This
system needs dry and clean air at a pressure up to 10 bar. If a compressed air network isn't available, a fan
generating system can be used.
According to the application, it could be necessary to cool the thermometer using an air flow. The maximum
pressure for an air purge system is 0.7 bar. Just for a normal air purge, only the tenth part of this flow is required.
Remember that the air tube must have a diameter bigger enough not to have flow losses.
I
MPORTANT
N
OTE
:
W
HEN A PURGE AIR IS USED
,
IT MUST BE CLEAN AND DRY
. T
HE DIFFUSOR PRODUCES A LAMINAR FLOW THAT KEEPS THE LENS
CLEAN
. I
F THE AIR ISN
'
T PERFECTLY CLEAN
,
TRACKS OF OIL AND DIRT MAY DEPOSIT ON THE LENS
.
I
MPORTANT
N
OTE
:
W
HEN MEASURING TEMPERATURES INSIDE OVENS
,
DO NOT USE ANY AIR COMING FROM THE FAN OF THE OVEN
. T
HE AIR FROM
THE OVEN
,
IN FACT
,
MAY VARY
,
AND THE PRESSURE ON THE THERMOMETER MAY BE NOT SUFFICIENT TO GRANT ITS CLEANING
AND COOLING
.
