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Nitrogen dioxide Filter Change Indicator (BTI-AFT) is filter change indicator with auxiliary filter trap designed to provide real time indication of breakthrough of toxins

Nitrogen dioxide Breakthrough Indicator with Auxiliary Filter Trap (BTI AFT)

Nitrogen dioxide Filter Change Indicator with Auxiliary Filter Trap

Item No. 669

Product Features
Minimum detectable limit: 0.5ppm•hr
Color Change: off white to gray to black
Dimensions: Part A: 89.9mm (3.5in), diameter 24.5mm (1.0in)
Part B: 41mm (1.6in), diameter 81mm (3.2in)
Service life: 2 years

$120.54

Nitrogen dioxide Breakthrough Indicator (BTI-AFT) is filter change indicator with auxiliary filter trap designed to provide real time indication of the breakthrough of toxic gases and vapors. Indicator is equipped with auxiliary filter trap to ensure no gases or vapors escape to the outside environment while the indicator changing color.

How the BTI AFT works?

When filter is consumed, toxic gases and vapors breakthrough it. The contaminated air then enters the BTI AFT and chemically reacts with the indicating sensor. Producing vivid color change, alerting the user to change the filter.

How to use the BTI AFT?

  1. Remove bottom protective red plug from the bottom of the breakthrough indicator.
  2. Screw in the male NPT threading at the bottom of the indicator into same female threading at the outlet of your filter.
  3. Replace filter when the breakthrough indicator changes Color.

why is it essential to use filter change indicator & how to install it into your filter →
Learn more

Product Specifications

aWeight:118g (4.2oz)
bDimensions:Part A: 89.9mm (3.5in), diameter 24.5mm (1.0in

Part B: 41mm (1.6in), diameter 81mm (3.2in)

cInlet dimensions:¾” MNPT
dOperating temperature:4oC to 32oC (39oF to 89.6oF)
eOperating humidity:5% RH to 85%RH
fMinimum detectable limit:0.5ppm•hr at 30 cm/sec face velocity
gColor change:Off white to gray to black
hStorage temperature:4oC to 25oC, (39oF to 77oF)
iShelf life:1 yea at 4oC to 25oC, (39oF to 77oF)
jService life:14 months

Nitrogen dioxide BTI. Drum type filter change indicator Useful Link

Nitrogen dioxide BTIS. for ductless hood and fume extractor filters.

Useful Link

NIOSH

Nitrogen dioxide Breakthrough Indicator (BTI-AFT)

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