Vapor Leak Indicator - Brooks Instrument SFP33 Manual De Instalación Y Funcionamiento

Instruction and Operation Manual
X-PR-SFP-eng
Part Number: 541B070AAG
September, 2016

3-3 Vapor Leak Indicator

Strong mineral acids
Inorganic bases
Inorganic oxidizing agents
Salt solutions
Aldehydes
Organic acids
A Vapor Leak Indicator is included in the wall of the electronics housing. Its
purpose is to provide an indication that corrosive vapors have
contaminated the electrical compartment. The normal color of the indicator
is yellow. The chemical contained in the indicator is very sensitive to
corrosive ions and will change color to black in the presence of these ion
vapors.
Corrosive vapors can damage the sensor electronics, which can result in
measurement errors or a complete failure of the unit. The transmitter
should be replaced as soon as possible once the indicator turns from
YELLOW to BLACK as shown below.
CLEAN
"Yellow"
Figure 3-1 SFP Corrosive Vapor Indicator.
Section 3 Operation
Brooks
Anhydrides
Aromatics
Alcohols
Ketones
Esters
Fluoro and Chlorocarbons
CONTAMINATED
"Black"
®
SFP
3-3