RKI Instruments 61-1001RKSS User manual

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61-1001RKSS

Hydrogen Detector

Operator’s Manual

Part Number: 71-0229RK

Revision: P1

Released: 1/11/18

61-1001RKSS Hydrogen 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.

61-1001RKSS Hydrogen Detector

Product Warranty

RKI Instruments, Inc. warranties 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

61-1001RKSS Hydrogen Detector

Table of Contents

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

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

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

NC-6205-01 Hydrogen Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Junction Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Mounting the Hydrogen Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Wiring the Hydrogen Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Introducing Incoming Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Setting the Zero Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Replacing the Hydrogen Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Preparing for Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

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

Setting the Response Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Returning to Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

61-1001RKSS Hydrogen Detector • 1

Overview

This manual describes the 61-1001RKSS hydrogen detector (internal amplifier type). 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 hydrogen detector.

Specifications

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

manual.

Table 1 lists specifications for the hydrogen detector.

WARNING: When using the 61-1001RKSS, you must follow the instructions and

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

61-1001RKSS and to minimize the risk of personal injury. Be sure to

maintain and periodically calibrate the 61-1001RKSS as described in this

manual.

Table 1: 61-1001RKSS Specifications

Description Specifications

Target Gas Hydrogen

Area Classification Explosion proof for Class I, Groups B, C, and D

Sampling Method Diffusion

Detection Range 0 to 100 %LEL

Response Time 90% in 45 seconds

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

2 • 61-1001RKSS Hydrogen Detector

Description

This section describes the components of the NC-6205-01 and 61-1001RKSS detectors. The

61-1001RKSS includes the NC-6205-01 hydrogen detector and a junction box. A four point

terminal strip is provided inside the junction box for detector connections.

Figure 1: 61-1001RKSS Component Location

NC-6205-01 Hydrogen Detector

The hydrogen 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 arrestor also contains any sparks which may occur within the detector. The

detector has a built in molecular sieve that only allows hydrogen to diffuse into the

detector. The 1/2 inch NPT mounting threads at the top of the detector allow you to

mount it into the bottom conduit hub of the junction box. The controller conduit hubs are

normally 3/4 in. NPT, so a 3/4 in. x 1/2 in. NPT reducer may be necessary to install the

hydrogen detector. 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 color-coded leads extend from the top of the detector. The leads allow

you to connect the detector to the terminal block.

Junction Box

The stainless steel, corrosion resistant junction box allows you to install the detector at a

mounting site that is remote from a controller, and it protects the detector wiring

connections. Two conduit hubs allow you to mount the detector to the junction box and

connect the wiring from the detector to a controller. An O-ring seals the interface between

the junction box cover and the junction box base.

The bottom conduit hub includes a 3/4 in. x 1/2 in. NPT reducer that allows you to screw

the detector into the hub. The terminal block within the junction box facilitates the wiring

process. A cover on the front of the junction box allows access to the interior of the

J-Box

Red Green

Black

Locking Set Screw

White

61-1001RKSS Hydrogen Detector • 3

junction box. A locking set screw on the junction box cover allows you to secure the

junction box cover and prevent it from being removed.

Installation

This section describes procedures to mount the hydrogen detector in the monitoring

environment and wire the detector to a controller.

Mounting the Hydrogen 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 gas is likely to be found first. For hydrogen, which is

lighter than air, mount the detector near the ceiling or where hydrogen is most

likely to accumulate.

Figure 2: Mounting the Hydrogen Detector

2. At the mounting site you select, hang or mount the junction box with the detector

facing down (see Figure 2).

3/4 NPT

Female,

.20 Dia. x .45

Slot, 2X

3.66

3.15

2.40

Hydrogen Detector

J-Box

.75

3.34

7.40 MAX

4 • 61-1001RKSS Hydrogen Detector

Wiring the Hydrogen Detector to a Controller

WARNING: Always verify that the power to the controller is off before you make

wiring connections.

1. Turn off the controller.

2. Turn off power to the controller.

3. Remove the junction box cover.

4. Guide a four-conductor, shielded cable or four wires in conduit through the unused

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 detector leads to the terminal block in the junction box.

CAUTION: If using shielded cable, leave the drain wire insulated and disconnected at the

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 hydrogen 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 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 strip. See the controller

operator’s manual and the controller’s detector head specification sheet for the

61-1001RKSS detector.

9. If using shielded cable, connect the cable’s drain wire to an available chassis ground at

the controller. RKI controllers typically have a ground stud that is a convenient

grounding location.

61-1001RKSS Hydrogen Detector • 5

Figure 3: Wiring the Hydrogen Detector to a Controller

Red

White

Green

Black

J-Box

Terminal Strip

Detector Wires

Green

Black

White

Hydrogen Detector

Controller LEL

Detector Terminals

Red

6 • 61-1001RKSS Hydrogen Detector

Start Up

This section describes procedures to start up the hydrogen detector and place the detector

into normal operation.

Introducing Incoming Power

1. Complete the installation procedures described earlier in this manual.

2. Verify that the power wiring to the controller is correct and secure. Refer to the

controller operator’s manual.

3. Turn on power to the controller.

4. Turn on the controller.

5. Verify that the controller is on and operating properly. Refer to the controller

operator’s manual.

CAUTION: Allow the detector to warm up for 5 minutes before you continue with the next

section, “Setting the Zero Reading”.

Setting the Zero Reading

WARNING: Do not remove the junction box cover while the circuits are energized

unless the area is determined to be non-hazardous. Keep the junction box

cover tightly closed during operation.

CAUTION: If you suspect the presence of hydrogen in the monitoring environment, use the zero

air calibration cylinder to introduce “fresh air” to the detector and verify an accurate

zero reading.

1. Verify that the detector is in a fresh air environment (environment known to be free of

hydrogen and of normal oxygen concentration, 20.9%).

2. Verify a reading of 0% LEL at the controller.

If the display reading is 0% LEL, start up is complete. The hydrogen detector is in

normal operation. If the display reading is not 0% LEL, continue with step 3.

3. Perform a zeroing operation at the controller. See the controller operator’s manual for

directions.

Table of contents

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