RKI 65-2483RK User manual

RKI Instruments, Inc.
www.rkiinstruments.com
65-2483RK
Multi Point Detector
Operator’s Manual
Part Number: 71-0206RK
Revision: A
Released: 8/2/11

65-2483RK Multi Point 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.

65-2483RK Multi Point 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

65-2483RK Multi Point Detector
Table of Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Detectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Junction Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Mounting the Multi-Point Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
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, H2S and CO Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Preparing for Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Setting the Zero Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Setting the Response Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Returning to Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Calibration, Oxygen Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Preparing for Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Setting the Fresh Air Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Setting the Zero Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Returning to Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

65-2483RK Multi Point Detector • 1
Overview
This manual describes the 65-2483RK 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 this instruction
manual.
Table 1 lists specifications for the multi-point detector.
Table 1: Specifications
Target Gas 65-2483RK-01: LEL (IR HC)/O2/H2S
65-2483RK-02: LEL (IR HC)/O2/CO
65-2483RK-03: LEL (IR HC)/H2S
65-2483RK-04: LEL (IR HC)/CO
65-2483RK-05: LEL (IR HC)/O2
65-2483RK-06: LEL (IR HC)/H2S/CO
*Note: The standard factory calibration for the IR HC LEL detector
is to propane. Since the 65-2483RK is a direct connect detector, the
calibration is done at the controller.
Area Classification Explosion proof for Class I, Groups B, C, and D
Sampling Method Diffusion
Detection Range LEL: 0 to 100 %LEL (lower explosive limit)
O2: 0 to 25 %volume
H2S: 0 to 100 ppm (parts per million)
CO: 0 to 300 ppm (parts per million)
Response Time 90% in 30 seconds
Accuracy IR Combustible Gas:
± 5% of reading or ± 2% of full scale (whichever is greater)
Oxygen:
± 0.5% O2
Hydrogen Sulfide:
± 5% of reading or ± 2 ppm H2S (whichever is greater)
Carbon Monoxide:
± 5% of reading or ± 5 ppm CO (whichever is greater)
Operating Temperature 23°F to 104°F (-5°C to 40°C)

2 • 65-2483RK Multi Point Detector
NOTE: The following symbol on the detector label is a caution to the user to refer to this
documentation for installation and operation instructions:
WARNING: When using the 65-2483RK, you must follow the instructions and warnings
in this manual to assure proper and safe operation of the 65-2483RK and to
minimize the risk of personal injury. Be sure to maintain and periodically
calibrate the 65-2483RK as described in this manual.
!

65-2483RK Multi Point Detector • 3
Description
This section describes the multi-point detector. It consists of the detectors, the terminal
strip, and the junction box.
Detectors
This section describes the components of the various detectors that are used with each
model of the 65-2483RK.
61-0190RK-HC IR Detector
Figure 1: 61-0190RK-HC IR LEL Detector Component Location
The infrared LEL HC detector is made up of a miniature infrared combustible gas LEL HC
detector housed and encapsulated in a pipe nipple. The pipe nipple has 3/4” NPT threads
on each end and a 1 1/4” hex that allows removal or installation of the detector with a
wrench. A porous flame arrestor that is coated with a hydrophobic film that repels 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.
IR LEL HC
Detector

4 • 65-2483RK Multi Point Detector
Oxygen Detector
The detector consists of the oxygen sensor, the detector housing body, detector housing
cap, and cap gasket.
Figure 2: 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 housing 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.
Detector HousingBody
Detector Housing Cap
Flame Arresto
r
Guard
Plug-in Oxygen Sensor
Cap Gasket

65-2483RK Multi Point Detector • 5
CO Detector
The detector consists of the CO sensor, charcoal filter with rubber boot, detector housing
body, detector housing cap, and cap gasket.
Figure 3: CO Detector Component Location
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 [H2S] and certain
hydrocarbons) from producing false CO readings.
Plug-In CO Sensor
Rubber Boot With
Charcoal Filter
Detector Housing Cap
Detector Housing Body
Cap Gasket
Flame Arrestor
Guard

6 • 65-2483RK Multi Point Detector
H2S Detector
The detector consists of the H2S sensor, the detector housing body, detector housing cap,
and cap gasket.
Figure 4: H2S Detector Component Location
Detector Housing, Housing Cap, & Cap Gasket
The detector housing protects the sensing components within the housing. Use the
mounting threads at the top of the housing to screw the H2S detector into a 3/4” NPT hub.
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 H2S
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.
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. Through a series of chemical
and electrical reactions, the sensor produces an electrical output that is proportional to the
detection range of the detector.
Junction Box
Use the junction box to install the multi-point detector at a mounting site that is remote
from the controller. The junction box protects the terminal strip and wiring connections
made to the terminal strip. Use the top 3/4’’ conduit hub to connect wiring from the
terminal strip to the controller. Use the cover on the front of the junction box to access the
interior of the junction box. The detectors and terminal strip are factory installed in the
junction box.
Cap Gasket
Detector Housing Body
Plug-In H2S Sensor
Detector Housing Cap
Flame Arrestor
Guard

65-2483RK Multi Point Detector • 7
Installation
This section describes procedures to mount the multi-point detector in the monitoring
environment and wire the detector to a controller.
Mounting the Multi-Point Detector
1. Select a mounting site that is representative of the monitoring environment. Consider
the following when you select the mounting site.
• Select a site where the detector is not likely to be bumped or disturbed. Make sure
there is sufficient room to perform start-up, maintenance, and calibration
procedures.
• Select a site where the target gases are likely to be found first.
NOTE: If your application does not require a specific mounting site, mount the detector
at approximately breathing level.
Figure 5: Outline & Mounting Dimensions 65-2483RK-01
3/4 NPT HUBS (4X)
.25
3.11
Oxygen
Detector
1.10
2.40
H2S
Detector LEL(HC IR)
Detector
3.00
.20 DIA X .45 Slot,(2X) ,mounting
1.25
3.00
7.75
3.15
8.24 max.

8 • 65-2483RK Multi Point Detector
Figure 6: Outline and Mounting Dimensions 65-2483RK-02
3/4 NPT HUBS (4X)
3.11
.25
Oxygen
Detector
1.10
2.40
CO
Detector LEL(HC IR) Detector
3.00
3.15
7.75
3.00
1.25
.20 DIA X .45 Slot,(2X) ,mounting
8.24 max.

65-2483RK Multi Point Detector • 9
Figure 7: Outline and Mounting Dimensions 65-2483RK-03
3.11
3/4 NPT Hubs (4X)
.25
LEL(HC IR)
Detector
1.10
2.40
H2S
Detector 3/4" Conduit
Plug
3.00
3.15
7.63
3.00
1.25
.20 DIA X .45 Slot,(2X) ,mounting
8.24 max.

10 • 65-2483RK Multi Point Detector
Figure 8: Outline and Mounting Dimensions 65-2483RK-04
.25
3.11
3/4 NPT Hubs (4X)
LEL(HC IR)
Detector
1.10
2.40
CO
Detector 3/4" Conduit
Plug
3.00
3.15
7.63
.20 DIA X .45 Slot,(2X) ,mounting
1.25
3.00
8.24 max.

65-2483RK Multi Point Detector • 11
Figure 9: Outline and Mounting Dimensions 65-2483RK-05
3/4 NPT HUBS (4X)
.25
3.11
LEL(HC IR)
Detector
1.10
.20 DIA X.45 Slot,(2X) ,mounting
2.40
Oxygen
Detector
3.00
3/4" Conduit
Plug
3.15
7.63
1.25
3.00
8.24 max.

12 • 65-2483RK Multi Point Detector
Figure 10: Outline and Mounting Dimensions 65-2483RK-06
2. At the mounting site you select, use #10 screws to mount the detector to a vertical
surface.
CAUTION: Mount the multi-point detector with the detectors facing down (see Figures 5-10).
3/4 NPT HUBS (4X)
3.11
.25
1.10
CO
Detector
2.40
3.00
H2S
Detector LEL (HC IR)
Detector
7.75
1.25
.20 DIA X .45 Slot,(2X) ,mounting
3.00
3.15
8.24 max.

65-2483RK Multi Point Detector • 13
Wiring the Multi-Point Detector to a Controller
WARNING: Always verify that the power source is OFF before you make wiring
connections.
1. Turn off the controller.
2. Turn off or unplug power to the controller.
3. Remove the junction box cover from the junction box.
WARNING: To maintain the explosion proof classification of the multi-point detector,
a conduit seal must be used within 18 inches of the junction box conduit
hub used for wiring to the controller.
4. If using a 3-gas model, guide an eight-conductor, shielded cable, or eight wires in
conduit through the top conduit hub of the junction box. If using a 2-gas model, guide
a six-conductor, shielded cable, or six wires in conduit through the top conduit hub of
the junction box. Use appropriate conduit fittings and construction technique for the
environmental rating and hazardous location classification of the junction box. The
junction box is rated NEMA 4X and classified explosion proof for Class I, Groups B, C,
and D.
5. Connect the wires to the multi-point detector using the terminal block in the junction
box.
CAUTION: If using shielded cable, leave the drain wire insulated and disconnected at the multi-
point detector. You will connect the opposite end of the cable’s drain wire at the
controller.
6. Secure the junction box cover to the junction box.
7. Route the cable or wires leading from the multi-point detector through one of the
conduit hubs at the controller housing. Use appropriate conduit fittings and
construction technique for the environmental rating of the controller. RKI controllers
are typically rated NEMA 4X.
CAUTION: Do not route power and multi-point detector wiring through the same conduit hub.
The power cable may disrupt the transmission of the detector signal to the controller.
8. Connect the wires to the applicable controller terminal strips. See the controller
operator’s manual and the controller’s detector head specification sheet. Also see
Figure 11-Figure 16 for wiring diagrams for each detector model.

14 • 65-2483RK Multi Point Detector
Figure 11: Wiring the 65-2483RK-01 to a Controller
Terminal Strip
Oxygen Detector
Green
Controller H2S
Terminals
Controller LEL
Terminals
Controller Oxygen
Terminals
Black
Red
Red
White
Green
White
Black
Green
LEL(HC IR)
Detector W ires
Oxygen Detector
Wires
Black
Green
White
Red
White
Red
Black
H2S Detector
Wires
H2S Detector
LEL(HC IR)
Detector

65-2483RK Multi Point Detector • 15
Figure 12: Wiring a 65-2483RK-02 to a Controller
Terminal Strip
Green
OxygenDetector
Green
Red Controller CO
Terminals
Controller LEL
Terminals
Controller Oxygen
Terminals
Black
Red
White
Green
White
Black
LEL(HC IR)
Detector W ires
OxygenDetector
Wires
Black
Green
White
Red
White
Red
CO Detector
Wires
CO Detector
Black
LEL(HC IR)
Detector

16 • 65-2483RK Multi Point Detector
Figure 13: Wiring the 65-2483RK-03 to a Controller
Terminal Strip
Black
LEL(HC IR)Detector
Controller LEL
Terminals
Controller H2S
Terminals
Black
Red
Red
White
Black
Green
LEL(HC IR)
Detector W ires
Green
White
Red
Black
Red
H2S Detector
Wires
H2S Detector