New Cosmos Electric PE-2CC Manual de usuario

SUCTION TYPE GAS DETECTOR

PE-2CC

PE-2DC

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options, this manual will be superseded by your delivery specifications.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-122-01

March 2023

Table of Contents

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

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

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

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

5. Installation ............................................................................................................................... 5

6. Wiring .................................................................................................................................... 8

6-1. Wiring Connection ............................................................................................................ 8

6-2. Wiring and Connection ................................................................................................... 1 1

7. Before Use ............................................................................................................................ 13

7-1. Precautions during Use .................................................................................................. 13

7-2. When an alarm is activated ............................................................................................ 13

8. Maintenance .......................................................................................................................... 14

8-1. Routine Check ................................................................................................................ 14

8-2. Annual Inspection ........................................................................................................... 15

8-3. Calibration Gas Preparation ........................................................................................... 15

8-4. Gas Sensor Replacement .............................................................................................. 17

8-5. Filter Replacement ......................................................................................................... 19

8-6. Manifold Plate Cleaning ................................................................................................. 19

9. Specifications ........................................................................................................................ 21

10. Warranty ................................................................................................................................ 21

11. Detection Principles ............................................................................................................... 22

11-1. Catalytic Combustion Sensor ....................................................................................... 22

11-2. Hot Wire Semiconductor Sensor .................................................................................. 22

11-3. Thermal Conductivity Sensor ........................................................................................ 23

12. Glossary ................................................................................................................................ 24

1. Introduction

Thank you for purchasing the New Cosmos PE-2CC/PE-2DC suction type gas detector.

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

The difference between PE-2CC and PE-2DC is the power source for the pump. The

PE-2CC requires 100 VAC, while the PE-2DC requires 24 VDC for the pump’s power

source.

This gas detector can detect one of a variety of gases including combustible gases by

installing one of the three sensor types, catalytic combustion sensor, hot wire

semiconductor sensor, and thermal conductivity sensor.

Prior to use, please read the indicator unit’s instruction manual. This unit is paired with an

indicator unit (e.g., V2, V3), and these pairs can be used in conjunction with one alarm unit

(e.g., VAL, VAS) to form a gas alarm system (e.g., UV-810). Install the gas detector at a

location where detection of the target gas is necessary, and install the indicator unit at a

location that is convenient for monitoring gas concentrations. The indicator unit displays the

gas concentration detected by the corresponding gas detector on its bar graph display. In a

paired setup, the indicator unit produces a visual alarm when the gas detector detects a

concentration of the target gas that is higher than the preset limit. In a gas alarm system

setup, the alarm unit produces audio-visual alarms, if the gas detector detects a leak of the

target gas that is higher than the preset limit.

Symbols Used in this Instruction Manual

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

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

DANGER Indicates an imminently hazardous situation that can result in

death or serious injury.

WARNING Indicates a potentially hazardous situation that may result in death

or serious injury.

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

property damage.

NOTE

Provides information on product handling.

2. General Precautions

Carefully read this manual prior to use.

Follow the precautions below to ensure safe operation.

Only wire/install/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.

For explosion-proof wiring and installation, only a qualified electrician with knowledge of

explosion-proof components/installation procedures should perform wiring and installation.

 Ground the product to prevent electric shocks.

 To prevent electric shocks, turn off the indicator unit or gas alarm system, or remove

the power supply during wiring/installation/removal of the gas detector.

 To prevent lightning strikes, countermeasures against lightning should be taken on

the power lines and cables installed outdoors.

 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.

WARNING

CAUTION

3. Package Contents

This product is packed and shipped with the utmost care. If any items are missing or

damaged, please contact New Cosmos or its distributor for replacement.

Item Qty.

Gas detector (PE-2CC or PE-2DC) Per your order

Instruction manual (this document) 1 per order

Filter unit (FC-32), with included flow meter 1 per detector

Collecting cone (pipe flare) (PF-N3) *1 1 per detector

Hex wrench set (M2, M4, M5, and M8) 1 per order

Hex screw (M6×25) with nut and washer 4 per detector

Crimping terminal (V-1.25-F3, red color) 6 per detector

*1. The collecting cone is used by connecting it to the end of sampling pipe for water

deflection purposes while raining or sprinkling, and should not be used for sampling

gas in an enclosed area (e.g., inside duct, furnace, or device enclosure).

Optional items

Item Qty.

Protective cover (PW-51) *2 Per your order

Auto drain (AD-40) *3 Per your order

*2. Used on an outdoor installation.

*3. Auto drain is to automatically drain condensation formed while sampling gas at the

furnace or piping pit.

4. Unit Dimensions and Components

Figure 1. Outer Appearance

Item Component Qty. Description

1 Case 1

2 Terminal case 1

3 Manifold plate 2

4 Half joint 2 PT1/8(Rc1/8) ⌀6

5 Mounting bracket 2

6 Gas sensor 1

7 Suction pump 1

8 Terminal block 2

9 Hex screw (M10) 8

10 Name plate 1

Ground terminal

④

Ground terminal

5. Installation

 Joint surfaces are important members for ensuring the explosion-proof performance

of the product. Do not damage or strike joint surfaces during installation. Keep joint

surfaces clean and free from any damage. Contaminates such as scratches,

fingerprints, dirt and oil may adversely affect the explosion-proof characteristics of

the product.

 The pipe material (dia. 6/4) connected to the detector, should be suitable for the

target gas. The pipe length should be 30m or less.

 Do not install the gas detector in the following conditions

- Ambient temperature is outside the specified operating temperature range

of -10C to +40C (-10C to +70C if your unit has the heat-proof option).

- Condensation prone areas

- Exposure to water spray

- Presence of corrosive gas

- Exposure to sunlight

- Sudden temperature changes

- In the vicinity of equipment which can generate high frequencies or a magnetic

field

 Install the gas detector in a place free from vapor containing silicon compounds. Not

doing so may compromise the gas sensor’s performance.

 Install the gas detector in a place free from vibration.

 Avoid impacts to the gas detector.

 Use a protective cover (PW-51, sold separately) for outdoor installation.

 Use an auto drain (AD-40, sold separately) when installing the suction type gas

detector in a place where it may draw water, e.g., near a vapor outlet.

 The detector should be installed in accordance with applicable laws and regulations.

Refer the table below (Installation Height table) to determine the installation height of

the sampling port based on the specific gravity of the target gas. Install the gas

detector in a place where the target gas is likely to accumulate and the detector can

be easily accessed for maintenance or inspection.

 The atmospheric pressure in a gas sampling location should be 1kPa. If 1kPa is

exceeded, consult with New Cosmos or its authorized representative.

 When exhausting the emission by connecting the gas detector’s exhaust outlet to a

duct etc., the back-pressure should be 1kPa or less.

CAUTION

Installation Height

Install the detector’s gas sampling port in the following places which are not easily

accessed for maintenance or inspection, while the gas detector itself should be

installed in a place that is easily accessible.

(1) Inside a piping pit or at an enclosed place

(2) in a furnace

(3) At high or low temperature

(4) At an elevated location

Connecting the Sampling Pipe to Gas Detector

Use pipes (dia. 6/4) suitable for the gas to be detected. Connect the pipe to the gas

detector with a half joint (2 locations, gas in and out). Two joints with sleeve and nut for

copper piping (dia.6/4) are pre-installed when shipped.

Figure 2. Pipe Connection with Half Joint

Gas type Installing height Remarks

Gas heavier than air

(e.g., LPG)

Maximum of 10cm above

the floor

Determine the height by

considering easy

maintenance and

inspection.

Gas near the specific

gravity as air

(e.g., Carbon monoxide)

75 to 150 cm above

the floor

Determine the height by

considering the specific

gravity of the target gas

and mounting

environment.

Gas lighter than air

(e.g., Natural gas and

hydrogen)

Near the ceiling Determine the height by

considering layout (e.g.,

scaffold) for easy

maintenance.

Figure 3. In Piping Pit Figure 4. At Elevated Location

Install the collecting cone above any water so that it will not be drawn in.

Protective Cover and Auto Drain Installation

Figure 5. Protective Cover Figure 6. Auto Drain

Secure the protective cover in the event of forecasted high winds, storm, or a

typhoon. E.g. tether, string, or lash.

CAUTION

6. Wiring

Please refer to the indicator unit’s instruction manual along with this manual.

6-1. Wiring Connection

Perform explosion-proof enclosure wiring when installing the gas detector in a hazardous

area.

(1) Wiring up to this product (here explained in case of using rigid steel conduits

method)

 Only perform wiring and installation of this product in accordance with applicable

laws and regulations.

 Only a qualified electrician with knowledge of components/installation procedures

should perform wiring and installation.

 For explosion-proof wiring and installation, only a qualified electrician with

knowledge of explosion-proof components/installation procedures should perform

wiring and installation.

 Only use separate insulated wires when using the explosion-proof rigid steel conduit

method (do not use a bundled cable).

 Use the appropriate rubber, vinyl, or polyethylene insulated wires based on the

ambient humidity and temperature.

 Sheath all wires used in rigid steel conduits (JIS C 8305). To prevent the formation of

a flame path for explosive gas or fire inside the conduits, use conduit sealing fittings

filled with compounds.

 Do not use silicon type compounds for sealing the conduits. Doing so may

compromise the performance of the gas sensor.

 When flexibility is required, use explosion and water proof flexible conduits. Rain or

other liquid entry inside the gas detector may cause a function loss or malfunction of

the detector.

 Waterproof joints between conduits, fittings and joint boxes. Rain or other liquid

entry inside the gas detector may cause a function loss or malfunction of the

detector.

CAUTION

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