New Cosmos Electric KS-7R Manual de usuario

Carbon Dioxide Detector

KS-7R

Instruction Manual

Keep this manual for easy reference.

Carefully read this manual prior to use.

This manual describes the standard model. If your unit has end-user-specific

options, this manual will be superseded by your delivery specifications.

Instruction Manual No.

GAE-139-01

June 2019

Table of Contents

1. Introduction................................................................................................................................1

2. General Precautions..................................................................................................................2

3. Package Contents.....................................................................................................................3

4. Unit Dimensions and Components............................................................................................4

4-1. Outer Appearance..............................................................................................................4

4-2. Inner Components .............................................................................................................5

5. Installation .................................................................................................................................6

6. Wiring ........................................................................................................................................9

6-1. Pin Terminal/Insulated Sleeve Installation.......................................................................10

6-2. Wire Connection/Disconnection to/from Terminal Block..................................................11

6-2-1. Power Terminal Block ...............................................................................................11

6-2-2. External Output Terminal Block.................................................................................11

6-3. Cable Tie Installation .......................................................................................................11

7. Operation.................................................................................................................................12

7-1. Precautions before Use...................................................................................................12

7-2. Operating Procedure .......................................................................................................12

7-3. LCD Operation.................................................................................................................14

7-3-1. LCD...........................................................................................................................14

7-3-2. Normal Operation Status...........................................................................................14

7-3-3. Full Scale and Alarm Set Values Display..................................................................15

7-3-4. Peak Value Display and Reset..................................................................................15

7-3-5. Operation during Gas Alarm .....................................................................................15

7-4. User Mode .......................................................................................................................16

7-4-1. User Mode Operation................................................................................................16

7-4-2. Switching Maintenance Mode On/Off [Mode 1] ........................................................17

7-4-3. Zero Adjustment [Mode 2].........................................................................................18

7-4-4. Air Adjustment [Mode 3]............................................................................................18

7-4-5. Alarm Test [Mode 4] ..................................................................................................19

7-4-6. Alarm Event History [Mode 5] ...................................................................................20

7-4-7. Clock Setting [Mode 6]..............................................................................................21

7-5. Maker Mode.....................................................................................................................22

7-5-1. Maker Mode Activation..............................................................................................22

7-5-2. Alarm Set Value Change...........................................................................................23

8. Maintenance............................................................................................................................24

8-1. Inspection Contents and Frequency................................................................................24

8-2. Clock Battery Replacement.............................................................................................26

9. Troubleshooting.......................................................................................................................28

10. Specifications.........................................................................................................................30

11. Warranty ................................................................................................................................31

12. Expected Sensor Life ............................................................................................................31

13. Detection Principle ................................................................................................................32

14. Glossary ................................................................................................................................33

15. Proper Product Disposal at End of Life.................................................................................34

- 1 -

1. Introduction

Thank you for purchasing the New Cosmos KS-7R carbon dioxide detector.

To ensure safe and reliable operation, please read this instruction manual prior to use.

This unit detects carbon dioxide and is intended for use in a non-hazardous indoor area, e.g. office,

laboratory, or clean room, for the early detection of a gas leak.

The unit will relay the gas concentration value as an analog signal (4-20mADC) to external

equipment while simultaneously displaying the gas concentration value on its display.

This unit monitors carbon dioxide levels, and when they reach a preset level, the unit will produce

audio-visual alarms and activate relay contacts.

This manual uses Danger, Warning, Caution and Note symbols to draw attention to

procedures, materials, methods, and processes, which require particular attention.

: Indicates an imminently hazardous situation that can result in

death or serious injury.

: Indicates a potentially hazardous situation that may result in death

or serious injury.

: Indicates a hazardous situation that may result in minor injury or

property damage.

: Provides information on product handling.

DANGER

CAUTION

WARNING

NOTE

- 2 -

2. General Precautions

Carefully read this manual prior to use.

Follow the precautions below to ensure safe operation.

Only use this product in accordance with applicable laws and regulations.

Only a qualified electrician with knowledge of wiring and installation procedures should perform

wiring and installation.

▪In the event of a gas alarm, follow the safety procedures in accordance with your

company's regulations.

▪This product is not explosion-proof equipment and should not be installed in a

hazardous area.

▪Secure the cover by tightening the two fastening screws. Proper gas detection is not

possible if the cover is not tightly closed.

WARNING

Operation during power outage

In the event of a power outage during operation, the detector will automatically

resume operation once power is restored, provided the main power switch, under

the cover, is in the on (up) position.

NOTE

▪Do not disassemble, modify, or alter the structure of this unit or its electrical circuits.

Doing so may compromise the performance of the product.

▪This product is not drip-proof equipment and should be kept away from splashing

water.

▪Condensation inside the product may cause a device failure. If used continuously in a

high humidity environment, take measures to prevent condensation.

▪The product’s analog output resolution is 1,000 steps. Because of the difference in

resolution or number of displayed gas concentration digits, or connected impedance,

some errors in displayed gas concentration value may be observed.

If the fault threshold needs to be set via analog output, set it to 1.0mA.

CAUTION

- 3 -

3. Package Contents

The following items are included in a standard package. If any items are missing or

damaged, please contact New Cosmos or its authorized representative for replacement.

Item

Qty.

Description

CO2detector (KS-7R)

Mounting screw

M5x12 with spring washer (wall mounting)

Cable tie

To be used to bundle electric cables

Pin terminal

To be crimped to cables and inserted into the

terminal block

Insulating sleeve

To be installed in a crimped pin terminal to provide

insulation

Instruction manual

This manual

Inspection certificate

- 4 -

4. Unit Dimensions and Components

4-1. Outer Appearance

Item

Component

Description/Function

Cover

Slide up and lift the cover to access to the main power switch and to

wire external cables. This cover is normally closed.

Screw cover

Houses one mounting screw, and two fastening screws that attach the

cover to the unit. This cover is normally closed.

Gas detection port

Gas inlet to the CO2sensor.

Status indicator

During normal operation all three green internal LEDs are lit. In the

event of an 1st/2nd stage alarm, four internal amber/red LEDs light

sequentially.

LCD

Displays CO2concentration, parameter values, error codes, and

status icons.

AL2 alarm light, red

Flashes red in the event of a 2nd stage alarm. The light will become

solid if reset by pressing the RESET button.

AL1 alarm light, amber

Flashes amber in the event of a 1st stage alarm. The light will become

solid if reset by pressing the RESET button.

▲ (Up) button

During normal operation, press to display the highest peak value of

gas concentration after powering-up on the LCD.

Used for making settings in combination with other buttons.

▼ (Down) button

Used for making settings in combination with other buttons.

Dimensions are in mm.

- 5 -

Item

Component

Description/Function

RESET button

During normal operation, press to display the full scale and alarm set

values. Used for muting an on-going audio alarm.

POWER button

Press and hold for three seconds to turn on/off the detector.

Speaker opening

Opening for audio.

Cable entry (3 places)

Make a cutout (cable entry) with a nipper to connect external cables to

the terminals.

Maintenance button

Recessed button used for making settings.

4-2. Inner Components

Item

Component

Description/Function

Cover

Slide up and lift the cover to access to the main power switch and

to wire external cables. This cover is normally closed.

Screw cover

Houses one mounting screw, and two fastening screws that attach

the cover to the unit. This cover is normally closed.

Fastening screw (2 places)

Located under the screw cover.

Screws that attach the screw cover to the unit.

Terminal block

Connect to external wiring.

Main power switch

Turns on/off the main power.

- 6 -

5. Installation

▪Leave a distance of more than 30mm from each side of the detector for

removal purpose.

▪Leave a distance of more than 50mm from the top of the detector to allow the

cover to slide open.

▪Leave enough space for cable wiring below the detector.

NOTE

▪Avoid strong mechanical shock, impact or vibration to the detector by dropping or

bumping. Failure to do so may impair the performance of the detector.

▪Do not install the detector in the following conditions.

- Outdoors

- Exposure to water spray

- Outside the following operating temperature/humidity

-10 to +50 °C (no rapid temperature change)

0 to 85% RH (no condensation)

- Presence of corrosive gas

- Exposure to impact or vibration

- Presence of high frequencies or a magnetic field

- Exposure to electrical noise

- Exposure to dust

- Exposure to high winds (higher than 6 m/s or 13.4 mph)

▪Install the detector in a location that ensures easy access for maintenance.

▪Install the detector vertically with the sensor on top. Proper gas detection is not possible

if installed inverted, at an angle, or horizontally.

▪CO2is heavier than air, so the recommended sensor height is 150 cm (head height)

unless otherwise required by applicable laws or regulations. Install the unit with its gas

detection port free from obstructions.

▪Secure the cover by tightening the two fastening screws. Proper gas detection is not

possible if the cover is not tightly closed.

▪Do not use or store the detector where alcohols, acetone, or volatile oil is present. That

may compromise the product’s detection performance.

▪Do not use or store the detector where chlorine or corrosive gas is present. That may

compromise the product’s detection performance.

▪Exposure to alkali metals especially salt spray) or other inorganic elements may

contaminate the sensor and compromise the detection performance.

▪Accurate measurement is not possible, if installed beyond standard sea-level

atmospheric pressure range (e.g. at high-altitude).

▪

CAUTION

▪This product is not explosion-proof equipment and should not be installed in a hazardous

area.

▪Do not use the product at an area where the CO2concentration is less than 360 ppm.

WARNING

- 7 -

Wall-mount the detector using two M5 mounting screws (pitch: 134) according to the following

procedure.

1. Open the screw cover.

2. Loosely install the mounting screw (top).

3. Loosen the two fastening screws.

4. Slightly pull the cover forward.

Dimensions are in mm.

2. Loosely install

mounting screw (top)

3. Loosen two

fastening screws

Cover

4. Pull cover forward

Screw cover

1. Open screw cover

Clearance for cover

to slide

Cable entry

Mounting hole

Sensor

- 8 -

5. Slide the cover up (cover is open).

6. Firmly tighten the mounting screw (bottom) to secure the detector to the wall.

7. Slide the cover down (cover is closed).

8. While pressing the cover down toward the case,

9. Tighten the mounting screw (top).

10. Secure the screw cover to the case with the two fastening screws.

11. Close the screw cover.

CAUTION

Secure the cover by tightening the

two fastening screws. Proper gas

detection is not possible if the cover

is not tightly closed.

5. Slide cover up

6. Tighten mounting screw

(bottom)

7. Slide cover down

10. Tighten two fastening screws

Case

9. Tighten mounting screw

8. Press down

cover

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