RKI Instruments 35-3001-09 User Manual

35-3001-09

Oxygen/Hydrogen Sulfide

Sample-Draw Detector

Operator’s Manual

Part Number: 71-0330
Revision: P2
Released: 9/17/14

www.rkiinstruments.com

WARNING

Read and understand this instruction manual before operating
detector . Improper use of the dete ctor could result in bodily harm
or death.

Periodic calibration and maintenance of the detector is essential
for proper operation and correct readings. Please calibrate and
maintain this detector regularly! Frequency of calibration
depends upon the type of use you have and the sensor types.
T ypical calibration frequencies for most applications a re between
3 and 6 months, but can be required more often or less often
based on your usage.

35-3001-09 Oxygen/Hydrogen Sulf ide Sample-Draw Detect or

Product Warranty

RKI Instruments, Inc. warrants gas alarm equipment s old by us t o be free from def ects in material s,
workmanship, and performance for a period of one year from date of shipment from RKI
Instruments, Inc. Any parts found defective within that period will be repaired or replaced, at our
option, free of charge. This warrant y does not apply to those items which by their nature are subject
to deterioration or consumption in normal service, and which must b e cleaned, repaired, o r replaced
on a routine basis. Examples of such items are:

Warranty is voided by abuse including mechanical damage, alteration, rough handling, or repair
procedures not in accordance with the operator’s manual. This warranty indicates the full extent of
our liability, and we are not responsible for removal or replacement costs, local repair costs,
transportation costs, or contingent expenses incurred without our prior approval.

THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER
WARRANTIES AND REPRESENTATIONS, EXPRESSED OR IMPLIED, AND
ALL OTHER OBLIGATIONS OR LIABILITIES ON THE PART OF RKI
INSTRUMENTS, INC. INCLUDING BUT N OT LIMITED T O, THE WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN
NO EVENT SHALL RKI INSTRUMENTS, INC. BE LIABLE FOR INDIRECT,
INCIDENTAL, OR CONSEQUENTIAL LOSS OR DAMAGE OF ANY KIND
CONNECTED WITH THE USE OF ITS PRODUCTS OR FAILURE OF ITS
PRODUCTS TO FUNCTION OR OPERATE PROPERLY.

a) Absorbent cartridges d) Batteries
b) Pump diaphragms and valves e) Filter elements
c) Fuses

This warranty covers instruments and parts sold to users by authorized distributors, dealers, and
representatives as appointed by RKI Instruments, Inc.

We do not assume indemnification for any accident or damage caused by the operation of this gas
monitor, and our warranty is limited to the replacement of parts or our complete goods.

35-3 001 -09 Oxygen/Hydrogen Sulfide Sample-Draw Detector

Table of Contents

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

External Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Internal Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Mounting the Sample-Draw Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Removing the Inlet Fitting Tubing Stub, if Necessary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Connecting the Sample Lines to the Sample-Draw Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Wiring the Sample-Draw Detector to a Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Introducing Incoming Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Setting the Zero Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Preventive Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Replacing Components of the Sample-Draw Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Adjusting the Low Flow Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Calibration Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Calibration, Oxygen Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Preparing for Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Setting the Fresh Air Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Setting the Zero Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Returning to Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Calibration, H2S Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Preparing for Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Setting the Zero Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Setting the Response Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Returning to Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

35-3001-09 Oxygen/Hydrogen Sulf ide Sample-Draw Detect or

Overview

This operator’s manual describes the 35-3001-09 oxygen/hydrogen sulfide sample-draw detector.
This manual also describes how to install, start up, maintain, and calibrate the sample-draw detector
when using it with a gas monitoring controller. A parts list at the end of this manual lists
replacement parts and accessories for the sample-draw detector.

Specifications

Table 1 lists specifications for the oxygen/hydrogen sulfide sample-draw detector. See the
controller Operator’s Manual for information specific to the controller.

Table 1: Specifications

Target Gases and Detection Range Oxygen: 0 - 25% volume

Hydrogen Sulfide: 0 - 100 ppm
Input Power 24 VDC Nominal (18.5 VDC - 30 VDC)
Construction (housing) Fiberglass/polyester (NEMA 4X)
Dimensions 8.5 in. H x 6.5 in. W x 4.25 in. D
Weight 4.5 lbs.
Sampling Method Sample-draw
Sample Flow 3.0 SCFH typical, with no inlet or exhaust line
Flow to Sensor 1.0 SCFH (nominal)
Maximum Recommended Inlet/

Exhaust Line Length for
1/4” O.D. x 1/8” I.D. Tubing

* RKI Instruments, Inc. does not recommend installing this tubing

size on both the inlet and exhaust.

Maximum Recommended Inlet/
Exhaust Line Length for
1/4” O.D. x 0.170” I.D. Tubing

Response Time 90% in 30 seconds
Accuracy Oxygen

± 0.5 % O

Hydrogen Sulfide:

± 5% of reading or ± 2 ppm H

Inlet

50 feet 0 feet

Inlet
50 feet 50 feet
75 feet 0 feet

:

2

S (whichever is greater)

2

Exhaust

Exhaust

WARNING: When using the 35-3001-09, you must follow the instructions and warnings in

this manual to assure proper and safe operation of the 35-3001-09 and to
minimize the risk of personal injury. Be sure to maintain and periodically
calibrate the 35-3001-09 as described in this manual.

35-3001-09 Ox y g e n / H y d r o g e n S u l f i d e Sample-Draw Det e c t or • 1

Description

This section describes th e components of the oxygen/hydrogen sulfide sample-draw detector.

Sensor Flow

Control Va lv e

Pump Reset

Pressure Swit ch

Adjustment Screw

(behind PCB)

Hydrophobic

Flow Baffle

This End To

Inlet Fitting

Fail LED

Pilot LED

Switch

Flowmeter

Filt er

Flowmeter Circuit

Board Connector

S

S

+

+

AMP 2

AMP

S S R

+

+

AMP 1

AMP 2

W

+

B

_

O
X
Y
G
E
N

+

OXY

WG

+
OXY

W

LEL/ IR

W

LEL/ IR

G BR

G B

Mounting
Foot, 4X

Oxygen Sensor
Terminal Strip

Pump Connector

Pump

H2S Sensor
(inside block)

H2S Amplifier

H2S Flo w
Block

Oxyg en
Sensor

Oxyg en Flow
Block

Detector/Amp
Terminal Strip
(Factory Wired)

Interconnect
Terminal
Strip

Particle F ilter

INLET

Inlet

Fitting

EXHAUST

Exhaust

Fitting

Figure 1: Oxygen/Hydrogen Sulfide Sample-Draw Detector Component Location

External Components

This section describes the sample-draw detector’s external components.

Housing

The sample-draw detector’s fiberglass housing is weather- and corrosion-resistant. It is suitable fo r

2 • 35-3001-09 Oxygen/Hydro gen Sulfide Sample- Draw Detector

3/4" Conduit Hub

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 LEDs 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.

Sample Fittings

The sample fittings are located on the left side of the bottom of the housing. The inlet fitting is near
the front of the housing and the exhaust fitting is near the back of the housing. The inlet fitting has
a short factory installed tubing stub for use with the particle filter. The sample fittings accept 1/4 in.
rigid tubing. See the Installation section on page 7 to connect tubing to the sample fittings.

Inlet Fitting Tubing Stub

A short tubing stub comes factory installed in the inlet fittin g. It is used for connecting the particle
filter. If the particle filter is not used, or if you install the particle filter in a different location, the
tubing stub needs to be removed and replaced with tubing.

Conduit Hub

One 3/4” conduit hub is located on the right sid e of the bottom of the hous ing. It is used fo r routing
wiring into the housing by using conduit or an appropriate cable bushing.

Internal Components

This section describes the sample-draw detector’s internal components (see Figure 1). Figure 2
illustrates how the gas sample moves through the flow system.

Exhaust

Inlet

Particle Filter

Pressure Switch

Flowmeter PCB

Sensor Flow

Control Valve

Hydrop hob i c Fil ter

Restrict or

Pump

Flowmeter

H2S

Sensor

Flow Baffle

Oxygen

Sensor

Figure 2: Oxygen/Hydrogen Sulfide Sample-Draw Detector Flow Diagram

Main Circuit Board

The main circuit board includes the detect or/amp terminal strip, intercon nect terminal st rip, oxygen
sensor terminal strip, pump connector, and flowmet er circuit board connector (see Figure 1).

35-3001-09 Ox y g e n / H y d r o g e n S u l f i d e Sample-Draw Det e c t or • 3

Detector/Amp Terminal Strip

The detector/amp terminal strip is the upper twelve-point terminal strip in the bot tom right corner
of the main circuit board. Use the detector/amp terminal strip to connect the hydrogen sulfide
sensor to the main circuit board.

NOTE: The hydrogen sulfide sensor is factory-wired to the main circuit board. See the

“Installation” section on page 7 for all wiring procedures related to the sample-draw
detector.

Interconnect Terminal Strip

The interconnect terminal strip is the lower twelve-point terminal strip in the bottom right corner of
the main circuit board. Use the interconnect termin al stri p to con n ect the sam ple-draw detector to a
controller.

Oxygen Sensor Terminal Strip

The oxygen sensor terminal strip is a two-point terminal strip in the upper right corner of the main
circuit board. Use the oxygen sensor terminal strip to connect the oxygen sensor to the main circuit
board.

NOTE: The oxygen sensor is factory-wired to the main circuit board. See the “Installation”

section on page 7 for all wiring procedures related to the sample-draw detector.

Pump Connector

The pump connector is the two-point connector below the oxygen terminal strip in the upper right
corner of the main circuit board. Use the pump co nnector to connect the pump to the main circuit
board.

NOTE: The pump is factory-wired to the main circuit board. See “Installation” on page 7 for all

wiring procedures related to the sample-draw detector.

Flowmeter Circuit Board Connector

The flowmeter circuit board connector is a six-position connector in the upper left corner of the
main circuit board. Use the flowmeter circuit board connector to connect the flowmeter circuit
board to the main circuit board.

NOTE: The flowmeter circuit board is factory wired to the main circuit board. See “Installation”

on page 7 for all wiring procedures related to the sample-draw detector.

Flowmeter Circuit Board

The flowmeter circuit board is mounted to the left side of the main circuit board using standoffs. It
includes the flowmeter, sensor flow control valve, status LEDs, pressure switch, and pump reset
switch.

Flowmeter

The flowmeter is mounted to the right side of the flowmeter circuit board. You can see it through
the window in the door. A ball in the flowmeter column indicates the flow rate to the sensor. The
flowmeter measures the flow in the range 0.2 to 2.0 SCFH (Standard Cubic Feet per Hour). The
optimum flow rate is 1.0 SCFH.

4 • 35-3001-09 Oxygen/Hydro gen Sulfide Sample- Draw Detector