PCE Instruments PCE-WMM 50 Manuel utilisateur

Manual

Version 1.0

Date of creation: 31.05.2016

Date of last change: 28.11.2017

CO2 Analyser PCE-WMM 50

PCE Americas Inc.

711 Commerce Way

Suite 8

Jupiter

FL-33458

USA

From outside US: +1

Tel: (561) 320-9162

Fax: (561) 320-9176

[email protected]

www.pce-instruments.com/english

www.pce-instruments.com

PCE Instruments UK Ltd.

Units 12/13

Southpoint Business Park

Ensign way

Hampshire / Southampton

United Kingdom, SO31 4RF

From outside UK: +44

Tel: (0) 2380 98703 0

Fax: (0) 2380 98703 9

[email protected]

Manual

Contents

1Safety notes ............................................................................................................. 3

2Specifications .......................................................................................................... 4

2.1 Technical specifications.............................................................................................................. 4

2.2 Delivery content.......................................................................................................................... 5

3System description ................................................................................................. 6

3.1 Device......................................................................................................................................... 6

3.2 Display........................................................................................................................................ 9

4Getting started ....................................................................................................... 10

4.1 Preparation............................................................................................................................... 10

4.2 Power connection..................................................................................................................... 11

5Operation ............................................................................................................... 12

5.1 Further measuring functions..................................................................................................... 12

5.2 Settings..................................................................................................................................... 13

6Maintenance .......................................................................................................... 14

6.1 Repair, cleaning and maintenance........................................................................................... 14

6.2 Troubleshooting........................................................................................................................ 16

7Warranty ................................................................................................................. 16

8Disposal ................................................................................................................. 17

9Contact ................................................................................................................... 17

9.1 PCE Instruments UK ................................................................................................................ 17

9.2 PCE Americas .......................................................................................................................... 17

Manual

Thank you for purchasing a gas detector from PCE Instruments.

1 Safety notes

Please read this manual carefully and completely before you use the device for the first time. The device

may only be used by qualified personnel and repaired by PCE Instruments personnel. PCE Instruments

cannot be held liable for any damage or injuries caused by non-observance of the manual.

The device must only be used as described in this instruction manual. If used otherwise, this can

cause dangerous situations for the user and damage to the meter.

The instrument may only be used if the environmental conditions (temperature, relative humidity,

…) are within the ranges stated in the technical specifications. Do not expose the device to

extreme temperatures, direct sunlight, extreme humidity or moisture.

When the air quality meter is exposed to extreme heat, fire and explosions as well as

deformations of the device are very likely.

Do not expose the CO2 analyser to any impact, shocks or vibration.

The case should only be opened by qualified PCE Instruments personnel. Touching the electrical

conductor inside the instrument can cause electric shocks.

Never use the meter when your hands are wet.

You must not make any technical changes to the device.

The appliance should only be cleaned with a damp cloth. Use only pH-neutral cleaner, no

abrasives or solvents.

The device must only be used with accessories from PCE Instruments or equivalent. Using the

wrong mains adaptor can cause damage to the device as well as fatal injuries of the user.

The mains adaptor should be fixed tightly with the elastic plug lock, so that it can only be

removed using mechanical tools.

If you wish to connect a fan to the potential-free contacts of the sensor unit, make sure that the

fan has its own external power supply. Otherwise, the fan will not work. This can cause

dangerously high CO2concentrations in the monitored area.

Before each use, inspect the case for visible damage. If any damage is visible, do not use the

device.

Do not use the instrument in explosive atmospheres.

Pay special attention to the “ESC” indication in the display. If it appears, adopt protective

measures before entering the room where the sensor unit has been installed.

Check the cable connection between the sensor unit and the remote display unit thoroughly. The

cable is connected to the remote display unit’s input, coming from the sensor unit.

Communication between the sensor unit and the remote display unit should work flawlessly.

Therefore, you should use the “DIAG” function to test flawless communication.

The limit values for the measuring variables as stated in the specifications must under no

circumstances be exceeded.

Non-observance of the safety notes can lead to damage of the device or injuries of the user.

Moreover, observe the applicable national health and safety regulations and those set up by the

relevant trade associations in your country, as well as any relevant regulations for safe and

professional operation. Particularly, make sure to comply with your national accident prevention

regulations for the handling of gases.

This instruction manual is published by PCE Instruments without any guarantee.

We expressly point to our general guarantee terms which can be found in our general terms of business.

If you have any questions please contact PCE Instruments.

Manual

Safety symbols

Safety-related instructions the non-observance of which can cause damage to the device or personal

injury carry a safety symbol.

Symbol

Designation / description

General safety symbol

Non-observance can cause personal injury and/or damage to the device.

Warning of electric voltage

Non-observance can cause electric shocks.

2 Specifications

2.1 Technical specifications

Sensor unit

Measured gas

carbon dioxide (CO2): 0 ... 50,000 ppm (5 %) (vol.) NDIR sensor

Temperature (gas /

environment)

0 ... +45 °C

Supply of gas samples

by diffusion

Alarm contacts

- 1 potential-free normally open contactor to control external devices

by releasing alarm 1

- switching power: 30 V DC / 250 V AC, max. 2 A

Alarm thresholds

Alarm 1

0.5 / 1 / 1.5 / 2 %

Alarm 2

1.5 / 2 / 2.5 / 3 / 3.5 / 4 %

Menu items

Function test of connection between sensor unit and remote display

unit, calibration, switching between °C and °F, alarms 1, 2 and factory

default settings

Display elements

- 4-digit digital display for measured gas concentration within range

0 ... 9999 ppm

- 3-digit digital display for measured gas concentration within range

1 ... 5 %

- additional 3-digit digital display for measurement and temperature in

°C and °F

- LEDs for operation, alarms 1, 2 and monitoring of voltage supply

Operating elements

Reset, menu selection, Enter

Safety

continuous self-surveillance of temperature range, sensor life,

implausible values, EEPROM system, internal data transfer

Enclosure

plastic, IP 54, splash-water proof

Voltage Supply

Mains adaptor 100 ... 240 V AC, 50 / 60 Hz

Diameters

168 x 125 x 47 mm (without connections)

Manual

Remote display unit

Temperature (gas /

environment)

0 ... +45 °C

Menu items

- 4-digit digital display for gas concentration within range

0 ... 9999 ppm

- 3-digit digital display for concentration within range 1 ... 5 %

- additional digital display to measure temperature in °C and °F

- LEDs for operation, alarms 1, 2 and monitoring of voltage supply

Display elements

Function test, Reset, menu selection, Enter, shifting between °C

and °F

Enclosure

aluminium, IP 54, splash-water proof

Voltage supply

via data cable to gas detector

Dimensions

118 x 85 x 34 mm (without connections)

2.2 Delivery content

1 x gas detector PCE-WMM 50

1 x instruction manual

Manual

3 System description

3.1 Device

The gas detector PCE-WMM 50 is equipped with a buzzer as well as a visual indication. These are

activated when the CO2 concentration reaches or exceeds a threshold previously set. Also, high CO2

concentrations activate a potential-free contact which can, for instance, activate a fan which reduces the

increased CO2 concentration in the room concerned.

Sensor unit

A LC display

B Yellow LED (error indication)

C Red LED 2 (AL2)

D Red LED 1 (AL1)

E Green LED (power supply)

F Reset key

G Mode key

H Enter key

I Communication cable to remote display

J Potential-free contact:

Red cable

White cable

Blue cable (central contact of the relay)

K Power supply

L Rubber protective cap

M Gas input

N Buzzer

Manual

The sensor unit must be installed in the room to be inspected, such as a room where CO2gas bottles are

stored. The LC display shows the CO2 concentration in the ambient air as well as the temperature. When

the green LED glows constantly, the power supply of the device is granted.

If “ESC” is indicated in the LC display of the remote display unit, you must adopt protective

measures before entering the room where the sensor unit has been installed. Check the room’s

ventilation and find out whether there is a CO2 leak, wearing protective clothing / equipment. As soon as

the CO2 concentration in the ambient air has reached the second alarm threshold, “ESC” appears in the

display of the sensor unit as well as in the display of the remote display unit. The yellow LED “FLT”

(standing for fault) flashes. Use the „ReFactSet“ function to reset the gas leak detector to factory defaults.

The “ESC” indication should now disappear. Alternatively, you can remove the mains adaptor and plug it

back into the socket.

The sensor unit has the following functions:

DIAG Communication test between sensor unit and remote display unit

CAL Calibration of gas detector

ReFactSet Reset to factory default settings

You can set two alarm thresholds:

AL1

AL2

1. Alarm threshold

Selectable threshold values: 0.5 %; 1 %; 1.5 %; 2

(Factory default setting: 1.5 %)

When the CO2concentration exceeds the first

threshold value, the red AL1 LED (LED 1) will flash,

the buzzer will sound and the potential-free contact

will close if the red and blue cables are connected

or closes when the white and blue cables are

connected.

The AL1 LED will stop flashing and the buzzer will

stop sounding as soon as the CO2concentration

falls below the first alarm threshold value.

2. Alarm threshold

Selectable threshold values: 1.5 %; 2 %; 2.5 %; 3

%; 3.5 %; 4 %

(Factory default setting: 3 %)

When the CO2concentration exceeds the second

threshold value, the red AL1 and AL2 LEDs will

flash at the same time, the time between the

buzzer intervals becomes shorter and „ESC“

appears in the LC display.

When the CO2concentration falls below the second

alarm threshold, even if it falls below the first alarm

threshold, the red AL1 and AL2 LEDs will keep

flashing and the buzzer will sound until you restart

the device. To restart the gas meter, press the

“Reset“ key (F) or disconnect the mains plug from

the socket and plug it back in.

Manual

Remote display unit

O Green LED (power supply)

P Red LED 1 (AL1 )

Q Red LED 2 ( AL2)

R Yellow LED (error indication)

S LC display

T Enter key

U Mode key

V RJ45 connection (Output)

W RJ45 connection for sensor unit (Input)

X Buzzer

Manual

3.2 Display

Symbol

Meaning

Description

CO2concentration in ppm

CO2concentration in the

monitored room

Temperature (degrees Centigrade)

Temperature in the monitored

room in degrees Centigrade

Temperature (degrees Fahrenheit)

Temperature in the monitored

room in degrees Fahrenheit

Alarm

Alarm icon

Diagnosis

Test of communication between

the sensor unit and the remote

display unit

First alarm threshold

If the CO2concentration exceeds

the first alarm threshold,

- the red LED 1 flashes,

- the buzzer sounds and

- the potential-free contact

closes if the red and blue cables

are connected or closes if the

white and blue cables are

connected

Second alarm threshold

If the CO2concentration exceeds

the second alarm threshold,

- ”ESC”appears in the LCD

- the two red LEDs 1 and 2

flash,

- the buzzer sounds

Calibration

Calibration of the CO2 sensor if

the measurement value deviates

too much from the current CO2

concentration

Restore Factory Settings

Deletes all custom settings and

restores the factory default

settings.

Escape

Appears once the second alarm

threshold is exceeded, what

might be a sign of CO2leakage.

High

The CO2concentration is higher

than 5 %.

Manual

If “ESC” is indicated in the LC display of the remote display unit, you must adopt protective

measures before entering the room where the sensor unit has been installed. Check the room’s

ventilation and find out whether there is a CO2 leak, wearing protective clothing / equipment. As soon as

the CO2 concentration in the ambient air has reached the second alarm threshold, “ESC” appears in the

display of the sensor unit as well as in the display of the remote display unit. The yellow LED “FLT”

(standing for fault) flashes. Use the „ReFactSet“ function to reset the gas leak detector to factory defaults.

The “ESC” indication should now disappear. Alternatively, you can remove the mains adaptor and plug it

back into the socket.

The remote display unit shows the readings and safety warnings of the sensor unit. It is connected to the

sensor unit via a communication cable (cable length: max. 8 m). the remote display unit should not be

placed in the same room as the sensor unit. It should be mounted in a way which provides high visibility

and an easy reading of the CO2concentration before entering the room where the sensor unit is located.

The connection between both devices can be checked by using the “DIAG” function which is described in

the further course of this manual. To reset the PCE-WMM 50, the “Reset” key on the sensor unit is used.

4 Getting started

4.1 Preparation

When taking the PCE-WMM 50 out of its box, remove the protective rubber cap from the gas input

(M) and put it to position L. During operation, make sure that the gas input (M) is not blocked at any time.

1 power supply (ventilation)

2 fan

3 mains adaptor

4 sensor unit

5 gas bottles

6 / 7 remote display unit

8 door

Open the box and take out the sensor unit, the remote display unit and all accessory parts.

Mount the sensor unit in the area which you want to monitor. It should be placed 0.45 m above the

ground and as near as possible to the pipes and valves. Mount the wall mounting to a wall by using 4

screws. The sensor unit can be placed in the mounting afterwards. Make sure that the sensor unit sits in

the mounting tightly.

Mount the remote display unit outside of the room to be monitored. Mount the wall mounting to the wall by

using screws. The display unit can be placed in the mounting afterwards. Make sure the display unit sits

in the mounting tightly.

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