RKI Instruments 35-3000RKA-H2S - Manual (Page 2)

2 • Sample-Draw Hydrogen Sulfide Gas Detection
Description
This section describes the components of the sample-draw hydrogen sulfide gas detector.
The sample-draw detector consists of the housing, flow system, and detection system.
Figure 1: Sample-draw Hydrogen Sulfide Gas Detector Component Location
Housing
The sample-draw detector’s fiberglass housing is weather- and corrosion-resistant. It is
suitable for installation where general purpose equipment is in use.
The housing door is hinged on the left side and is secured by two latches on the right side.
The flowmeter and status lights are visible through a window in the housing door.
Four mounting feet are attached to the back of the housing (one at each corner). Use the
mounting feet to install the housing to a vertical surface. Use the two conduit hubs on the
bottom of the housing to make wiring connections.
An aluminum subpanel is mounted to the interior of the housing. The sample-draw
detector’s internal components are mounted to the subpanel.
Tra nsmitter
Te rminal Stri p
Interconnect Terminal
Stri p
Ma in Circu it Bo ard
SPAN
G
O XY
24V
FB
4/20 BATT
BK R D W
TOXIC
ZERO
TOX IC
OXY
Pilot L ED
Bypass va lve
Flowme ter
3 /4" Conduit
H ub, 2X
JUM PER PINS FOR
FACTORY USE
ONL Y
Particl e filter
Tra nsmitter
Pum p/flow switch
terminal block Flow Alarm Setpoint
Adjustment
Potentiometer
Mounting Foot,
4X
Flow Ad just
Potentiome ter
Fail LED
Exhaust
Inlet
Se nsor
C onnector
Span Pot
Zer o Pot
Test Points
1 00 - 500 mV ra nge
N ot U sed
Hyd rogen Sulfide Se nso r
Fa cto ry Se t Po t