RKI Instruments 65-2484RK User Manual

Part Number: 71-0252RK
Revision: 0

65-2484RK

Multi Point Detector

Operator’s Manual

Released: 7/18/14

RKI Instruments, Inc.

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.

65-2484RK Multi Point Detec tor

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 fr o m date of shipment
from RKI Instruments, Inc. Any parts found defective withi n tha t 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 ser v ice, and
which must be cleaned, repaired, or replaced on a routine basis. Examples of such items
are:

W arranty 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 , a nd we are not r esponsible for removal or r eplacement costs,
local repair costs, transportation costs, or contingent expenses incurred without our prior
approval.

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

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 no t as su me indemnif ic a t ion for any accident or d amage caused b y t he op e r a t ion of
this gas monitor, and our warranty is limited to the replacement of parts or our complete
goods.

65-2484RK Multi Point Detector

Table of Contents

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

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

Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Detectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Conduit Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Junction Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Mounting the Multi-Point Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Wiring the Multi-Point Detector to a Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Introducing Incoming Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Setting the Zero (Fresh Air) Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Replacing Components of the Multi-Point Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Calibration, LEL, CO, and H2S Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Preparing for Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Setting the Zero Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Setting the Response Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Returning to Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Calibration, Oxygen Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Preparing for Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Setting the Fresh Air Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Setting the Zero Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Returning to Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Calibration, ESM-01 Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Preparing for Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Setting the Zero Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Setting the Response Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Returning to Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

65-2484RK Multi Point Detec tor

Overview

This manual describes the 65-2484RK multi point direct connect detector. This manual
also describes how to install, start up, maintain, and calibrate the detector when it is used
with a gas monitoring controller. A parts list at the end of this manual lists replacement
parts and accessories for the detector.

Specifications

WARNING: Do not use this product in a manner not specified in thi s instruction

Table 1 lists specifications for the multi-point detect or.

manual.

65-2484RK Multi Point Detector • 1

Table 1: Specifications

Target Gas 65-2484RK-01: LEL/O

65-2484RK-02: LEL/O
65-2484RK-03: LEL/O
65-2484RK-04: LEL/O
65-2484RK-05: LEL/O
65-2484RK-06: LEL/O

65-2484RK-11: LEL (IR CH
65-2484RK-12: LEL (IR CH
65-2484RK-13: LEL (IR CH
65-2484RK-14: LEL (IR CH
65-2484RK-15: LEL (IR CH
65-2484RK-16: LEL (IR CH

65-2484RK-21: LEL/H
65-2484RK-22: LEL/H
65-2484RK-23: LEL/H
65-2484RK-24: LEL/H
65-2484RK-25: LEL/H
65-2484RK-26: LEL/H

S/AsH3, methane calibration standard for LEL

2/H2

S/Cl2, methane ca libration s tandard for LE L

2/H2

S/HCN, methane calibration standard for LEL

2/H2

S/NH3, methane calibration standard for LEL

2/H2

S/PH3, methane calibration standard for LEL

2/H2

S/SO2, methane calibration standard for LEL

2/H2

)/O2/H2S/AsH3, methane cali bration for LEL

4

)/O2/H2S/Cl2, methane calibration for LEL

4

)/O2/H2S/HCN, methane calibration for LEL

4

)/O2/H2S/NH3, methane calibration for LEL

4

)/O2/H2S/PH3, methane calibration for LEL

4

)/O2/H2S/SO2, methane calibration for LEL

4

S/CO/AsH3, methane calibration standard for LEL

2

S/CO/Cl2, methane calibration standard for LEL

2

S/CO/HCN, methane calibration standard for LEL

2

S/CO/NH3, methane calibration standard for LEL

2

S/CO/PH3, methane calibration st andard for LEL

2

S/CO/SO2, methane calibration standard for LEL

2

65-2484RK-31: LEL (IR CH
65-2484RK-32: LEL (IR CH
65-2484RK-33: LEL (IR CH
65-2484RK-34: LEL (IR CH
65-2484RK-35: LEL (IR CH
65-2484RK-36: LEL (IR CH

65-2484RK-41: LEL/O
65-2484RK-42: LEL/O
65-2484RK-43: LEL/O
65-2484RK-44: LEL/O
65-2484RK-45: LEL/O
65-2484RK-46: LEL/O

65-2484RK-51: LEL (IR CH
65-2484RK-52: LEL (IR CH
65-2484RK-53: LEL (IR CH
65-2484RK-54: LEL (IR CH
65-2484RK-55: LEL (IR CH
65-2484RK-56: LEL (IR CH

)/H2S/CO/AsH3, methane calibration for LEL

4

)/H2S/CO/Cl2, methane calibration for LEL

4

)/H2S/CO/HCN, methane calibration for LEL

4

)/H2S/CO/NH3, methane calibration for LEL

4

)/H2S/CO/PH3, methane calibration for LEL

4

)/H2S/CO/SO2, methane cali bration for LEL

4

/CO/AsH3, methane calibration standard for LEL

2

/CO/Cl2, methane cal i b ration standard for LEL

2

/CO/HCN, methane calibration standard for LEL

2

/CO/NH3, methane calibration standard for LEL

2

/CO/PH3, methane calibration standard for LEL

2

/CO/SO2, methane calibration standard for LEL

2

)/O2/CO/AsH3, methane calibration for LEL

4

)/O2/CO/Cl2, methane calibration for LEL

4

)/O2/CO/HCN, methane calibration for LEL

4

)/O2/CO/NH3, methane calibration for LEL

4

)/O2/CO/PH3, methane calibration for LEL

4

)/O2/CO/SO2, methane calibration for LEL

4

*Note: Since the 65-2484RK is a direct connect detector, the calibration is done at the
controller.

2 • 65-2484RK Multi Po int Detector

Table 1: Specifications

!

Sampling

Diffusion

Method
Detection

Range

LEL: 0 to 100 %LEL (lower explosive limit)
O

: 0 to 25 %volume

2

CO: 0 to 300 ppm (parts per million)

S: 0 to 100 ppm (parts per million)

H

2

: 0 - 1.50 ppm

AsH

3

: 0 - 3.00 ppm

Cl

2

HCN: 0 - 15.0 ppm

: 0 - 75.0 ppm

NH

3

PH

: 0 - 1.00 ppm

3

: 0 - 6.00 ppm

SO

2

Response Time 90% in 30 seconds
Accuracy Catalytic Combustible Gas

± 5% of reading or ± 2% LEL (whichever is greater)
IR Combustible Gas

:
± 5% of reading or ± 2% of full scale (whichever is greater)
Oxygen
± 0.5% O

:

2

Carbon Monoxide:
± 5% of reading or ± 5 ppm CO (whichever is greater)
Hydrogen Sulfide:
± 5% of reading or ± 2 ppm H2S (whichever is greater)

ESM-01

:

± 10% of reading or ± 5% of full scale (whichever is greater)

:

Operating
Temperature

23°F to 104°F (-5°C to 40°C)

NOTE: The following symbol on the detector label is a caution to the user to refer to this

documentation for installation and operation instructions:

W ARNING: When using the 65-2484RK, you must follow the instructions and warnings

in this manual to assure proper and safe operation of the 65-2484RK and to
minimize the risk of personal injury. Be sure to maintain and period ically
calibrate the 65-2484RK as described in t hi s manual.

65-2484RK Multi Point Detector • 3

Description

This section describes the multi-point detector. It consists of the detectors, the terminal
strips, the conduit seal, and the junction boxes.

Detectors

This section describes the components of the various detectors that are used with each
model of the 65-2484RK.

61-0140RK LEL Detector

LEL Detector

Figure 1: 61-0140RK LEL Detector Component Location

The combustible gas detector is a catalytic type detector that produces an electrical output
that corresponds to the detection range. It is packaged in a 1/2 inch NPT nipple with a
sintered metal flame arrestor on one end allowing ambient air to diffuse into the detector.
The flame arrest or al so co ntai n s any s park s whi ch may occur within the detect or. The 1/2
inch NPT mounting threads at the top of the detector allow you to install it in the bottom
conduit hub of the junction box with the use of a 3/4 in. x 1/2 in. NPT reducer. A
rainshield screws onto the bottom of the detector (flame arrestor end). The rainshield
helps protect the detector from rain and debris in the monitoring environment. Four color­coded leads extend from the top of the detector. The leads allow you to connect the
detector to the terminal block.

4 • 65-2484RK Multi Po int Detector

61-0190RK IR LEL Detector

IR LEL Detector

Figure 2: 61-0190RK IR LEL Detector Component Location

The infrared LEL detector is made up of a miniature infrared combustible gas LEL
detector housed and encapsulated in a pipe nipple. The pipe nipple has 3/4” NPT thr eads
on each end and a 1 1/4” hex that allows removal or installation of the detector with a
wrench. A por ous flame arr e stor t hat is coat ed wit h a hydr o phobic f ilm that re pels liquids
is on one end of the detector and allows sample gas to enter the detector. The flame
arrestor also contains any sparks which may occur within the detector. Four color coded
leads, red, white, green, and black, extend from the other end of the detector. The leads
allow you to connect the detector to the terminal block. To distinguish the propane
detector from the methane detector (in case the replacement sensor label that is applied to
one of the leads is lost), a short length of red shrink tubing is ap plied to the white wire of
the propane detector near where the wire comes out of the nipple.

65-2484RK Multi Point Detector • 5

Oxygen Detector

The detector consists of the oxygen sensor, the detector housing body, detector housing
cap, and cap gasket.

Detector Housing Body

Cap Gasket

Pl ug-in Ox ygen Sensor

Detect or Housing Cap

Flame Arrestor
Guard

Figure 3: Oxygen Detector Component Location

Detector Housing Body

The detector housing body protects the electronic components within the housing. Use the
mounting threads at the top of the housing to screw the oxygen detector into the 3 /4”
NPT hub on the bottom of the junction box. Two wires extend from the top of the detector
housing body . Use these wires to connect the oxygen detector to the terminal block. One of
the wires is white and one of the wires is green.

The housing includes two sockets installed on a circuit board. These sockets accept the
plug-in sensor’s two pins to provide electrical connection for the sensor. The circuit board
with the sockets conditions the sensor’s signal before the signal reaches the controller.

Housing Cap & Cap Gasket

The housing cap screws onto the detector housing. It retains the plug-in sensor and
protects it from damage. A foam gasket is installed inside the ho using cap that seals
against the sensor face. The housing cap also includes a flame arrestor which contains any
sparks that may occur within the detector and a flame arrestor guard which protects the
flame arrestor from damage. Unscrew the detector cap to access the plug-in sensor for
maintenance or replacement. A cap gasket seals the interface between the housing and
cap.

Plug-in Oxygen Sensor

The plug-in sensor is secured in the detector assembly by the housing cap. It has two pins
that mate with the sockets in the detector housing body. Through a series of chemical and
electrical reactions, the sensor produces an electrical output that corresponds to the
detection range of the transmitter.

6 • 65-2484RK Multi Po int Detector

H2S Detector

r

The detector consists of the detector housing body, detector housing cap, cap gasket,
rubber boot, spacer, and H

Detector Housing Body

S sensor.

2

Cap Gasket

H2S Plug-inSensor

Spacer

Rubber Boot

Detector
Housing Cap

Flame
Arresto
Guard

Figure 5: H

Detector Housing, Housing Cap, & Cap Gasket

S Detector Component Location

2

The detector housing protects the sensing components within the housing. Use the
mounting threads at the top of the housing to screw the H

S detector into a 3/ 4” NPT hub.

2

Use the removable cap near the bottom of the housing to access the sensor for
maintenance or replacement. The cap protects the sensor from damage and includes a
flame arrestor which contains any sparks which may occur within the detector housing. A
cap gasket seals the interface between the housing and cap. A flame arrestor guard is
permanently bonded to the cap.

Two wires extend from the top of the detector housing. Use these wires to connect the H

2

detector to the multi-point detector. The housing includes a four-socket pattern. This
socket pattern accepts the sensor’s four pins to secure the sensor with in the detector
housing. A pre-amplifier, located between the sockets and two interconnect wires,
conditions the sensor’s signal before the signal reaches the controller.

Rubber Boot and Spacer

A rubber boot and spacer are installed between the detector housing cap and the sensor.
They help ensure that the detector remains plugged into the detector housing body.

Sensor

The sensor is secured within the sensor housing by the detector housing cap. It has four
pins that mate with the sockets in the detector housing body . Thr ough a series of chemical
and electrical reactions, the sensor produces an electrical output that is proportional to the
detection range of the detector.

S

65-2484RK Multi Point Detector • 7

CO Detector

The detector consists of the CO sensor, charcoal filter with rubber boot, detector housing
body, detector housing cap, and cap gasket.

Detector Housing Body

Cap Gasket

Plug-In C O S ensor

Rubber Boot Wit h
Charcoal Filter

Detector Housing Cap

Flame Arrestor
Guard

Figure 4: CO Detector Component Loca tion

Detector Housing, Housing Cap, & Cap Gasket

The detector housing body protects the sensing components within the housing. Use the
3/4” NPT mounting threads at the top of the housing to screw the CO detector into the
bottom conduit hub of the junction box. Use the removable cap near the bottom of the
housing to access the sensor for maintenance or replacement. The cap protects the sensor
from damage and includes a flame arrestor which contains any sparks which may occur
within the detector housing. A cap gasket seals the interface between the housing and cap.
A flame arrestor guard is permanently bonded to the cap.

Two wires extend from the top of the detector housing body. Use these wires to connect
the CO detector to the multi-point detector. The housing includes a four-socket pattern.
This socket pattern accepts the sensor ’s four pins to secure the sensor within the detector
housing. A pre-amplifier, located between the sockets and two interconnect wires,
conditions the sensor’s signal before the signal reaches the controller.

Plug-In Sensor

The sensor is secured within the sensor housing by the housing cap. It has four pins that
mate with the sockets in the detector housing body. Through a series of chemical and
electrical reactions, the sensor produces an electrical output that corresponds to the
detection range of the detector.

Charcoal Filter

The disc-shaped charcoal filter is secured to the face of the CO sensor with a rubber boot.
The charcoal filter prevents interference gases (hydrogen sulfide [H

S] and certain

2

hydrocarbons) from producing false CO readings.

8 • 65-2484RK Multi Po int Detector

ESM-01 Detector

The ESM-01 detector consists of the detector housing body, detector housing cap,
splashguard, cap gasket, and the plug -in sensor.

Detector Housi ng Body

Cap Gasket

Plug-In SO2 Sensor

Detector Housi ng
Cap

Splash Guard
(removable)

Figure 6: ESM-01 Toxic Detector Component Location

Detector Housing Body

The detector housing body protects the electronic components within the housing. Use the
mounting threads at the top of the housing to screw the toxic detector into a 3/4” NPT
hub. Two wires extend from the top of the detector housing body. Use these wires to
connect the toxic detector to a controller. One of the wires is black and one of the wires is
color coded depending on the detector type. See the appropriate figure for your detector
head for the color code assignments (Figure 9 - Figure 14).

The housing body includes a 12 position connector at the bottom of the housing body. The
plug-in sensor mates to this connector. A pre-amplifier located between the connector and
the two interconnect wires conditions the sensor’s signal before the signal reaches the
controller.

Housing Cap, Cap Gasket, & Splashgu ard

The housing cap screws onto the detector housing. It retains the sensor and protects it
from damage. A removable splashguard is screwed onto the detector cap to protect the
sensor from impact damage, direct water spray, and splashing. Unscrew the detector cap
to access the sensor for maintenance or replacement. A cap gasket seals the interface
between the housing and cap.

Plug-in Sensor

The plug-in sensor is secured in the dete ctor assembly by the housing cap. Through a
series of chemical and electrical reactions, the sensor produces an electrical output that
corresponds to the detection range of the sensor.

Conduit Seal

The conduit seal isolates the volumes of the 2 junction boxes.

65-2484RK Multi Point Detector • 9