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VITIATION SENSING DEVICE
Flame Supervision Devices
9
Chemical Engineering
Professional
11/06/2015

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Term
VITIATION SENSING DEVICE
KEYWORDS
Definition
NORMALLY A TWO PORT PILOT BURNER
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Term
VITIATION SENSING DEVICE HOW IT WORKS (In 2 ways)
Definition
PILOT FLAME LIFTS OFF FROM THERMOCOUPLE OR ELECTRODE TIP. SEARCHING FOR OXYGEN CLOSING THE ELECTROMAGNETIC GAS VALVE OR ACTING THE FLAME RECTIFICATION CIRCUIT IN RESPONSE TO INCREASING POCs,WHERE THE APPLIANCE IS LOCATED.(USUALLY WITH DECREASE OF 1.5-2% IN OXYGEN LEVELS.
Term
VITIATION SENSING DEVICE WHERE FOUND
Definition
FITTED ON  BOILERS,FIRES, WATER HEATERS, W.A.U [image][image] [image] [image]
Term
VITIATION SENSING DEVICE
TESTS
Definition
PILOT FLAMES SHOULD BE BLUE AND SHARP
WITH FLAME AT BURNERS EDGE.
[image]
Term
Vitiation Sensing Device Recognition
Definition
,REPLACED AS A WHOLE UNIT. CANNOT BE DISMANTLED.
Term
Vitiation Sensing Device
BBU's
Definition
BBU versions have a SNIFFER TUBE from the DRAUGHT DIVERTER connected to the air inlet
Term
Vitiation sensing device Background to development
Definition
European Gas Directive ruling from 1/1/96 all appliances connected to a flue for the dispersal of POCs must be so constructed that in abnormal draught conditions there is no release of POCs in a dangerous quantity into the room concerned.
Term
Vitiation sensing device 2 devices developed
Definition
Oxygen depletion system (ODS) also known as oxy pilot, anti-vitiation device or atmospheric sensing device (ADS) •Thermal Backflow Prevention Device also known as a TTB stat (TTB comes from the Dutch term 'Themishe terugslag beveiliging').
Term
VITIATION
Meaning of.....
Definition
LACKING IN OXYGEN
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