RKI Instruments 35-3001-05-03 Operator's Manual

35-3001-05-03

Carbon Dioxide Sample-Draw Detector

Operator’s Manual

Part Number: 71-0413
Revision: 0
Released: 8/4/17

www.rkiinstruments.com

WARNING

Read and understand this instruction manual before operating
detector. Improper use of the detector 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.
Typical calibration frequencies for most applications are between
6 and 12 months, but can be required more often or less often
based on your usage.

35-3001-05-03 Carbon Dioxide Sample-Draw Detector

Product Warranty

RKI Instruments, Inc. warrants gas alarm equipment sold by us to be free from defects in materials,
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 warranty does not apply to those items which by their nature are subject
to deterioration or consumption in normal service, and which must be cleaned, repaired, or 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 W ARRAN T Y 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 TO, 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.

35-3001-05-03 Carbon Dioxide Sample-Draw Detector

Table of Contents

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

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

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

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

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

Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Mounting the Carbon Dioxide Sample-Draw Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Connecting the Sample Lines to the Sample-Draw Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Wiring the Carbon Dioxide Sample-Draw Detector to a Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Introducing Incoming Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Setting the Zero Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Preventive Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Replacing Components of the Carbon Dioxide Sample-Draw Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Adjusting the Low Flow Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Removing the Particle Filter’s Tubing Stub, if Necessary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Calibration Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Preparing for Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Setting the Zero Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Setting the Response Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Returning to Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

35-3001-05-03 Carbon Dioxide Sample-Draw Detector

Overview

This operator’s manual describes the 35-3001-05-03 carbon dioxide 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 carbon dioxide sample-draw detector. See the controller
Operator’s Manual for information specific to the controller.

Table 1: Specifications

Target Gas and Detection Range Carbon Dioxide (CO

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)

Low Flow Setpoint 0.6 ± 0.1 SCFH

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

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

Response Time 90% in 30 seconds

Inlet

100 feet 0 feet

50 feet 50 feet

Inlet

100 feet 100 feet

): 0 - 5% volume

2

Exhaust

Exhaust

Accuracy ± 5% of reading or ± 2% of full scale (whichever is greater)

W ARNIN G: When using the 35-3001-05-0 3, you mus t follow the ins truction s and warnin gs in

this manual to assure proper and safe operation of the 35-3001-05-03 and to
minimize the risk of personal injury. Be sure to maintain and periodically
calibrate the 35-3001-05-03 as described in this manual.

35-3001-05-03 Car bon Dioxide Sample-Draw Detecto r • 1

Description

Oxygen
Sensor
Terminal
Strip

Pum p

Mounting

Foot, 4X

_

O
X
Y
G
E
N

B

+

W

OXY

+

RS

IR CO2
Flow Block

IR CO 2
Sensor P CB

BG

Detector/Amp
Terminal Strip
(Factory W ired)

+

+

AMP

AMP 2

S

Sensor Flow

Control Valve

Fail LED

Pilot LED

Pump Reset

Switch

Flowmeter

PressureSwitch

Adjustment Screw

(behind PCB)

R BG

Interconnect
Terminal
Stri p

OXY

GW

+

+

AMP 1

S

+

S

AMP 2

This En d T o

Inlet Fitting

Flowmeter Circuit

Board Connector

Pum p Connector

LEL/ IR

W

Particle Filter

LEL/ IR

W

3/4" Conduit Hub

IR CO2
Sensor
(inside b lock)

Exhaust

Fitting

Inlet

Fitting

EXHAUST

INLET

Hydrophobic

Filter

This section describes the components of the carbon dioxide sample-draw detector.

Figure 1: Carbon Dioxide Sample-Draw Detector Component Location

2 • 35-3001-05-03 Carbon Dioxide Sample-Draw Detector

External Components

Pump

IR CO2
Sensor

Flowmeter

Particle Filter

Flowmeter PCB

Exhaust

Pres su re Switch

Hydrophobic Filter

Inlet

Restrictor

Sensor

Flow

Control

Valve

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 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 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 sample fittings
accept 1/4 in. rigid tubing. See the Installation section on page 6 to connect tubing to the sample
fittings.

Particle Filter

A particle filter with a tubing stub on one end is shipped with the instrument but it is not factory
installed. If the particle filter is installed directly to the inlet fitting, the tubing stub must be used. If
the particle filter is installed somewhere else, like at the end of the inlet line, the tubing stub can be
used or removed.

Conduit Hub

One 3/4” conduit hub is located on the right side of the bottom of the housing. It is used for 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.

Figure 2: Carbon Dioxide Sample-Draw Detector Flow Diagram

35-3001-05-03 Car bon Dioxide Sample-Draw Detecto r • 3