RKI Instruments 35-3010RK-06-02 Bedienungsanleitung

rkiinstruments.com

35-3010RK-06-02 Sample-Draw

Detector

Part Number: 71-0203RK

Revision: B

Released: 9/10/12

35-3010RK-06-02 Sample-Draw Detector

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

3 and 6 months, but can be required more often or less often

based on your usage.

35-3010RK-06-02 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 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 NOT 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.

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.

a) Absorbent cartridges d) Batteries

b) Pump diaphragms and valves e) Filter elements

c) Fuses

35-3010RK-06-02 Sample-Draw Detector

Table of Contents

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

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

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

Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Flow System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Detection System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Mounting the Sample-Draw Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

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

Wiring the Sample-Draw Detector to a Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

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

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

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

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Low Flow Alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

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

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

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

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

Adjusting the Low Flow Setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Calibration Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Calibration, CO Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

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

Setting the Response Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Returning to Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Calibration, CO2Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

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

Setting the Response Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

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

Calibration, Oxygen Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Setting the Zero Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Setting the Fresh Air Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Returning to Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

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

35-3010RK-06-02 Sample-Draw Detector • 1

Overview

This manual describes the 35-3010RK-06-02 sample-draw detector. This manual also

describes how to install, start up, maintain, and calibrate the detector. 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 35-3010RK-06-02.

WARNING: When using the 35-3010RK-06-02, you must follow the instructions and

warnings in this manual to assure proper and safe operation of the

35-3010RK-06-02 and to minimize the risk of personal injury. Be sure to

maintain and periodically calibrate the 35-3010RK-06-02 as described in

this manual.

Table 1: Specifications

Target Gases & Detection Ranges Oxygen: 0-25% volume

Carbon Monoxide (CO): 0 - 300 ppm

Carbon Dioxide (CO2): 0 - 5,000 ppm

Input Power 24 VDC

Current Draw 200 mA

Output Signals CO channel: 4-20 mA

Oxygen and CO2channels: direct connect

Construction (housing) Fiberglass/polyester (NEMA 4X)

Dimensions 15.44 in. H x 12.55 in. W x 8.31 in. D

Weight 14 lbs.

Sampling Method Sample-draw

Sample Flow 1.2 SCFH (nominal)

Response Time 90% in 30 seconds

Accuracy Oxygen:

± 0.5% O2

Carbon Monoxide:

± 5% of reading or ± 5 ppm CO (whichever is greater)

Carbon Dioxide:

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

2 • 35-3010RK-06-02 Sample-Draw Detector

Description

This section describes the components of the 35-3010RK-06-02 sample-draw detector. The

sample-draw detector consists of the housing, flow system, and detection system.

Figure 1: Sample-Draw 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.

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.

Amp 2

Flow Block

for CO2

IRCO2

Sensor

Preamp

Circuit Board

Amp 1

Charcoal Filter

Hydrophobic Filter

(AcroPak)

Flow Block for

Oxygen and CO

Pump Dummy Plug for

H2S Sensor

CO Sensor

Oxygen Sensor

Dummy Plug for

Combustible Sensor

Exhaust Fitting For1/4"

OD Rigid Tubing

3/4 Conduit Hub, 2X

Inlet Fitting For1/4"

OD Rigid Tubing

Reset Switch

Main Circuit Board

35-3010RK-06-02 Sample-Draw Detector • 3

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 blocks,

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

through the flow system.

Figure 2: Sample-Draw Detector Flow Diagram

INLET Fitting

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 8

for instructions to connect 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 water is drawn

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

CO2

Oxygen

H2S Dummy

Plug

Hydrophobic

Filter

Inlet

Exhaust

Pump

LEL

Dummy

Plug

Flow meter

Flow Block

Bypass

Valve

Pressure Switch

Charcoal

Filter

4 • 35-3010RK-06-02 Sample-Draw Detector

Charcoal Filter

The charcoal filter is located above the main PC board. It is held in place by a metal clip.

The charcoal filter is placed before the CO sensor in the flow system. It scrubs out

interfering gases which may cause the CO sensor to respond, such as H2S or certain

hydrocarbons. Replace the charcoal filter when false high CO readings are noticed,

especially in the presence of H2S.

Pump

The pump is located to the left of the main circuit board near the bottom left of the

sample-draw detector. The pump pulls the gas sample into the sample-draw detector. The

pump operates on 24 VAC, which is generated from the 24 VDC supplied to the sample

draw detector.

Flowmeter

The flowmeter is attached to the main circuit board near the top left corner (see Figure 3).

A ball in the flowmeter column indicates the flow rate to the sensors. The flowmeter

measures the flow in the range 0.2 to 2.0 SCFH (Standard Cubic Feet per Hour). Although

the sample-draw detector will operate down to a flow of 0.6 SCFH, the optimum flow rate

is 1.2 SCFH.

Bypass Valve

The bypass valve is to the left of the flowmeter. The bypass valve adjusts the flow rate to

the sensors. Use a flat-blade screwdriver to adjust the bypass valve.

NOTE: The bypass valve allows fine adjustments of the flow rate. For a wider range of

adjustment, use the flow adjust potentiometer (see Figure 3).

Status Lights

Two status lights are above the flowmeter.

Pilot Light

The green Pilot light is on when the sample-draw detector is receiving power.

Fail Light

The red Fail light is on when the sample flow rate is below the low flow level.

NOTE: The factory set low flow level is 0.6 SCFH (±0.2). See “Adjusting the Low Flow

Setting” on page 17 to adjust this setting.

Pressure Switch

The pressure switch is mounted to the opposite side of the main circuit board. The

pressure switch monitors the flow rate to the sensors.

If the flow rate falls below the preset low flow level, the pressure switch causes the fail

relay to interrupt the sensor signal for the CO2and oxygen channels and the 4-20 mA

signal for the CO channel. This causes a downscale reading at the monitor on these

channel. The low flow level is factory-set at 0.6 SCFH (±0.2 SCFH).

35-3010RK-06-02 Sample-Draw Detector • 5

Flow Blocks

Both flow blocks are located in the lower right corner of the sample-draw detector. The

oxygen and CO sensors are installed in the larger flow block. The smaller flow block

houses the IR CO2sensor. The flow blocks route the sampled air to each sensor.

EXHAUST Fitting

The EXHAUST fitting on the bottom of the housing allows the gas sample to exit the

sample-draw detector. The EXHAUST fitting accepts 1/4 in. rigid tubing. See

“Installation” on page 8 to connect tubing to the EXHAUST fitting.

Detection System

The detection system consists of the gas sensors, preamp circuit board, and the main

circuit board.

Combustible Gas Sensor

The combustible gas sensor is normally installed in the lower left of the larger flow block.

In this model, the combustible sensor has been replaced by a dummy plug.

Oxygen Sensor

The oxygen sensor is installed in the lower right of the larger flow block. It consists of a

cylindrical body which houses the detection elements and a cable which terminates in a

round 7-pin male connector. The sensor connector mates to a 7-position socket that is

wired to the main PCB.

Hydrogen Sulfide Gas Sensor

The hydrogen sulfide sensor is normally installed in the upper right of the larger flow

block. In this model, the sensor has been replaced by a dummy plug.

Carbon Monoxide Sensor

The carbon monoxide gas sensor is installed in the upper left side of the flow block. It has

4 pins which mate with sockets in the preamp circuit board.

Carbon Dioxide Sensor

The infrared carbon dioxide sensor is installed in the smaller flow block. A small circuit

board with a cable mates to it and retains it in the block. The cable is wired to the main

PCB.

Preamp Circuit Board

The preamp circuit is used to connect the CO sensor to the main circuit board and to

secure the sensor in the flow block. Two cables mate to the main circuit board: the one on

the left is for the CO sensor signal and the one of the right is for the H2S sensor signal.

Since there is no H2S channel, the cable on the right is not used.

6 • 35-3010RK-06-02 Sample-Draw Detector

Main Circuit Board

Figure 3: Main Circuit Board

The main circuit board includes the interconnect terminal strip, sensor/transmitter

terminal strip, amp 1 circuit, amp 2 circuit, pump terminal strip, relay, and reset switch.

NOTE: The flowmeter and status lights are mounted to the main circuit board but are

considered part of the flow system.

Interconnect Terminal Strip

The interconnect terminal strip is the sixteen-point terminal strip near the bottom edge of

the main circuit board. Use the interconnect terminal strip to connect the sample-draw

detector to power and an external device.

Sensor/Transmitter Terminal Strip

The sensor/transmitter terminal strip is the sixteen-point terminal strip near the right

edge of the circuit board. Use the transmitter terminal strip to connect sensors or

transmitters to the main circuit board.

NOTE: The sensors and transmitters are factory wired to the sensor/transmitter

terminal strip. See “Wiring the Sample-Draw Detector to a Controller” on page 9

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

Test Point CAL + 2

Amp 1

(CO)

Zero Span Zero

Fail LED

Sensor/Transmitter

Terminal Strip

Pressure Switch

Reset

Switch

Pilot LED

Amp2

(H2S)

Span

Test Point CAL + 1

Test Point CAL - 2

Test Point CAL -1

ACTerminal

Strip Not Used

Interconnect Terminal

Strip

Low Flow Adjust

Flow Adjust Pot

Flowmeter

Pump Terminal Stip

Relay

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