Rki-instruments 30-0951RK-H2S Manual de usuario descargar pdf (Pagina 4)

4 • 30-0951RK-H2S 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 Combustible

Sensor

Pressue Gauge

As p i r a t or

Thumbscrew (3X)

Fl owmete r

Pr es su re Regul at or

Sens or Adapter

Sensor Chamber

Adapter Gasket (in

bottom of adapter)

1/4 O.D. Tube

Co mpr es s e d Ai r

Inlet Fitting

Pr es sure Adj us t men t

Knob

Aspirator/Sample

Ex haus t

(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-H2S Manual de usuario Pagina 4