User Manual

35-3010RKA-06 Sample-Draw Detector • 3

An aluminum subpanel is mounted to the interior of the housing. The sam ple-draw

detector’s internal components are mounted to the subpanel.

Flow System

The sample-draw detector’s flow system consists of the INLET fitting, hydrophobic filter,

charcoal filter, pump, flowmeter, bypass valve, status lights, pressure switch, flow block,

and EXHAUST fitting (see Figure 1). Figure 2 illustrates how the gas sample moves

through the flow system.

Figure 2: Sa mple-Draw Detector Flow Diagram

INL E T Fitt in g

The INLET fitting on the bottom of the housing allows the gas sample to enter the sample-

draw detector. The INLET fitting accepts 1/4 in. rigid tubing. See “Installation” on page 9

for instructions to co nnect tubing to the INLET fitting.

Hydrophobic Filter

The hydrophobic filter is to the left of the main circuit board. It is held in place by a metal

clip. It prevents water and other liquids from contaminating the flow system. Replace the

filter when it appears dirty, discolored, or clogged. If a liquid other than wa ter is drawn

into the filter, replace the filter as soon as possible.

Oxygen

Dum my

Plug

Hydrophobic

Filter

Inlet

Exhaust

Pump

Dum my

Plu g

Flow m eter

Flow B lock

Bypass

Valve

H2S

Pre ssure Switc h

Charcoal

Filter

LEL