Rki-instruments 30-0951RK-O2/CO Manual de usuario descargar pdf (Pagina 4)

4 • 30-0951RK-O2/CO Sample Draw Aspirator Adapter

Description

The sample draw aspirator adapter uses compressed air flowing through a venturi to

draw air into a sample chamber. The sample draw adapter screws directly onto the gas

detector.

Figure 1: Component Location

The sample draw adapter consists of four major components (see Figure 1): the regulator,

aspirator, detector adapter, detector chamber, and flowmeter.

Regulator

The regulator has an inlet port on its left side with a 1/4” tube fitting. The maximum

allowable inlet pressure is 300 psi. A gauge at the bottom of the regulator indicates the

output pressure. The output pressure, and detector flow, can be adjusted using the knob

on the front of the regulator. The detector flow rises or falls as the output pressure is

increased or decreased.

Screw Onto Combus tibl e

Sens or

Pressue Gauge

As p i r at o r

Thumbscrew (3X)

Fl o wmet e r

Pres sure Reg ul at or

Sensor Adapter

Sensor Chamber

Adapter Gasket (in

bottom of adapter)

1/4 O.D. Tube

Co mpr es se d Ai r

Inlet Fitting

Pres su re Adj us t ment

Knob

Aspirator/Sample

Exhaust

(1/8 NPT female)

1/4 O.D. Tube Sample

Inlet Fitting

Chamber O-ring (in top of

chamber)

1 2 3 4 5 6 7

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Rki-instruments 30-0951RK-O2/CO Manual de usuario Pagina 4