LANDTEC SEM5000 Manuel utilisateur

USER GUIDE

VERSION 3.0

SOFTWARE VERSION (707074) 40.07

 
 
 
 
 
 
 
 

 
INDEX 
GENERAL DESCRIPTION.................................................................................................................................... 3 
USER INTERFACE ................................................................................................................................................. 4 
1 OVERVIEW........................................................................................................................................................... 4 
2 CONNECTIONS ..................................................................................................................................................... 4 
3 DISPLAY .............................................................................................................................................................. 5 
4 NAVIGATION SYSTEM (MENU) ............................................................................................................................. 6 
INSTRUMENT FUNCTION ................................................................................................................................... 7 
1.1 Switch ON ................................................................................................................................................... 7 
1.2 Switch OFF................................................................................................................................................. 7 
START WORK......................................................................................................................................................... 8 
1 USE OF GPS......................................................................................................................................................... 8 
1.1 GPS Activation............................................................................................................................................ 8 
2 TEST EXECUTION ................................................................................................................................................. 9 
2.1 AIR test ....................................................................................................................................................... 9 
2.2 GAS test .................................................................................................................................................... 10 
2.3 UP WIND test ........................................................................................................................................... 11 
2.4 DOWN WIND test..................................................................................................................................... 11 
2.5 Result ........................................................................................................................................................ 11 
2.6 Stop the test sequences.............................................................................................................................. 11 
3 SAVING LOCATION............................................................................................................................................. 12 
4 DELETE DATA .................................................................................................................................................... 12 
5 DESCRIPTION OF THE PNEUMATIC CIRCUITS ...................................................................................................... 12 
5.1 Malfunction of the pneumatic circuit / Pump OFF................................................................................... 12 
5.2 Restarting the pump operation.................................................................................................................. 13 
SETTING FUNCTION .......................................................................................................................................... 14 
1 MEASUREMENT RANGE ..................................................................................................................................... 14 
1.1 Methane measurement .............................................................................................................................. 14 
1.2 Measure in absolute mode (ABS) and relative mode (REL) ..................................................................... 14 
2 ACOUSTIC AND VISUAL ALARM ......................................................................................................................... 14 
3 BACKLIGHT -DISPLAY ILLUMINATION .............................................................................................................. 15 
4 LCD CONTRAST................................................................................................................................................. 15 
5 BLUETOOTH ...................................................................................................................................................... 15 
6 RECHARGING THE BATTERY PACK ..................................................................................................................... 15 
MAINTENANCE.................................................................................................................................................... 16 
1 REPLACING THE BATTERY PACK ........................................................................................................................ 16 
2 REPLACING THE HYDROPHOBIC FILTER ............................................................................................................. 17 
CALIBRATION...................................................................................................................................................... 17 
1 ALARMS AND ERROR INFORMATION ................................................................................................................. 18 
WARRANTY .......................................................................................................................................................... 19 
APPENDIX A –SAFE USE OF THE INSTRUMENT ................................................................................... 20 
1 LASER RADIATION ............................................................................................................................................. 20 
2 OTHER PRECAUTIONS FOR THE USAGE ............................................................................................................... 20 
3 TESTING AND MAINTENANCE............................................................................................................................. 20 
4 REPAIR .............................................................................................................................................................. 20 
APPENDIX B –TABLE OF CHARACTERISTICS ...................................................................................... 21 
 

1GENERAL DESCRIPTION

The SEM5000 is a digital gas detection instrument from QED Environmental

Systems, Inc. The intended use of the SEM5000 is the measurement of low

concentrations of methane in the field (Landfill surface emissions monitoring,

leakage surveys of natural gas networks, control pinpointing outside buildings,

quantifying methane fluxes, and laboratory applications for gas analysis).

The instrument is selective exclusively to methane, thanks to the patented

Laser technology inside. The SEM5000 delivers reliable and accurate

measurement of methane concentrations, even if the sample contains other

gases or hydrocarbons. Due to its lightweight design and modest size, the

SEM5000 can be easily transported and is ideal for measuring methane

concentrations in the field, (landfills, site investigations or gas networks).

Thanks to its metrological sensitivity, accuracy, stability and response time,

the SEM5000 is the perfect instrument for the detection and quantification of

methane emissions.

The single-dial function selector makes the SEM5000 easy to use and the

large, back-lit LCD-display provides easy to read menus and results. The

SEM5000 has a measuring range covering 0 to 1,000,000 PPM (part per

million) or 100% methane concentration. The SEM5000 also offers a rapid

response time, improving the efficiency and saving time. The exceptional

reactivity of the SEM5000 laser technology provides excellent results during

field scans for fugitive traces of methane. The noteworthy combination of high

sensitivity and rapid response deliver outstanding measurement quality. The

SEM5000 is provided with integral GPS and Bluetooth, eliminating the need for

additional devices. The internal memory is capable of storing up to 480 hours

of scan data.

The SEM5000 is the perfect, easy-to-use instrument for accurately measuring

and recording methane concentrations during surface emissions monitoring.

CAUTION: DO NOT CHARGE THE BATTERY IN AREAS CLASSIFIED AS

HAZARDOUS.

ATTENTION: The photos shown in this user manual are indicative.

2USER INTERFACE

2.1 Overview

Description

[1]

ON/OFF button + Backlight

[2]

Function button

[3]

Buzzer

[4]

Selector Dial

[L]

LED Alarm Lights and Impact Bumpers

[S]

Strap Connectors

2.2 Connections

Description

[1]

Gas Sample Inlet

[2]

GPS Antenna Connector

[3]

Battery Charge Connector

[1]

[2]

[3]

[4]

[L]

[S]

[1]

[2]

[3]

2.3 Display

SECTOR

DESCRIPTION

[A]

Save Location

[A1]

Pump Status

[A2]

Tests Icons

[B]

Alarm Status

[C]

GPS Status

[D]

Battery Status

[E]

Measurement of Methane

[E1]

Type of view: ABS (absolute)

[E2]

Scale of Measurement: PPM (parts per million) – % VOL

(volume)

[F]

Bluetooth

[F1]

Bluetooth Connected with PC

Attention: this icon indicates that the instrument is

connected with the PC. Data will be saved in the PC and not the

device.

[G]

% of Memory Used

[H]

Gas Threshold

[I]

Information (data download, test results etc.)

[A]

[B]

[C]

[D]

[E]

[F]

[G]

[E1]

[E2]

[H]

[I]

[F1]

[A1]

[A2]

2.4 Navigation System (menu)

Push the green selector dial and the menu will

appear in the display window [E].

Use the selector dial to scroll through the

available menu options. Once you have identified

your desired option, push the selector dial to

confirm your selection.

While a menu is active, the value of the gas is

shown in the upper right corner of the display

[D]. The threshold value of the test is shown in

the lower right corner of the display [H].

(See Section 4.2 for additional information).

Select “ESC” to exit the Menu.

ON/OFF GPS

Start Test

ON/OFF Alarm

Concentration Threshold

_____ PPM

Reading Interval

Delete Memory

LCD Contrast

End test

Esc

[D]

[H]

[E]

3INSTRUMENT FUNCTION

3.1 Switch ON and Switch OFF

3.1.1 Switch ON

Press the ON/OFF button [1] for few seconds,

until the display is activated.

The start sequence includes several steps:

-Logo Landtec

-Information about the version of the

instrument firmware, serial number of

the instrument, next calibration date

NOTE - If there is existing data in the unit from

a previous scan, you will see the message

"DATA TO DOWNLOAD". In order to download

the data, you must use the SEMsoft software.

The instrument will warm up and calibrate

itself. The warm up lasts approximately 20

seconds. The instrument’s functions are not

available during the warm up period.

Once the warm up and calibration are

complete, the four LED lights will blink and the

alarm will sound.

The SEM5000 is now ready to operate.

3.1.2 Switch OFF

To switch off the instrument, press and hold

the ON/OFF button [1] for a few seconds. A

shut off message will appear on the display

and will count down to shut off.

4START WORK

4.1 Use of GPS

Upon start up, the GPS is not active. It must be activated prior to testing.

Note: Data is only acquired and saved when the GPS is active.

4.1.1 GPS Activation

Connect the external GPS antenna.

To activate the GPS, press the selector dial

and rotate the dial to scroll through the menu

options until “ON/OFF GPS” appears. Press the

selector dial to confirm the selection. The GPS

icon will change status from “Off” to “Active”.

The "Save Location" icon will appear in the

upper left-hand corner of the display.

The percentage of memory used will be

displayed in the bottom left-hand corner.

Initially, only the percent symbol, (%), will be

displayed. Once the GPS has stabilized and the

SEM5000 begins saving data, a number will

appear next to the percent symbol to indicate

what percentage of the memory has been

used.

Icon

Description

Icon

Description

GPS active but waiting for

signal

GPS off

GPS active

Save location

The GPS module is a high performance receiver with the ability to track up to

20 satellites. The antenna is a standard, high gain, vehicular type that provides

quality tracking performance.

Start-up time for the GPS module can vary according to the strength of the

actual signal received. The presence of high trees or buildings, aerial power

lines or other obstructions will affect the signal. Typically, in an open area, the

GPS will fix in less than a minute.

In the event of signal loss during the survey, the instrument will continue to

log gas values, and will associate the last saved tracked GPS position.

4.2 Test Execution

At any time of the work, you can perform the tests

of the instrument.

To start the test sequence, press the Selector Dial

and rotate it until “TEST” appears in the menu

screen.

Press the Selector Dial to activate the selection.

The test is composed of a sequence of 8 steps:

-AIR Test: Defines the average of the

bottom of the concentration threshold. This

test is repeated three times

-GAS Test: Defines the average of the top of

the concentration threshold. This test is

repeated three times

-UP WIND: Defines concentrations in

ambient air

-DOWN WIND: Defines concentrations in

ambient air

The sequence is:

1. AIR - 1

2. GAS 500 – 1

3. AIR – 2

4. GAS 500 – 2

5. AIR – 3

6. GAS 500 – 3

7. UP WIND

8. DOWN WIND

Attention: GPS must be active to perform the tests!

Attention: Do not switch OFF the SEM5000 during the tests!

4.2.1 AIR Test

After beginning the test sequence, the icons in the

upper left hand corner, [A] will change status. The

pump stops and test instructions will appear on the

display [I].

Connect the tube from the air cylinder to the

SEM5000 inlet, [1].

Press the “Function” button [2] to start the

test “AIR - 1”.

TEST STARTED will appear on the display and

the pump will start.

Press the “Function” button [2] to stop the test

after you have reached a stabilized reading.

Attention: The duration of this test is min 10 seconds / max 200

seconds.

4.2.2 GAS Test

When the AIR test is finished, the GAS test icon will

appear. The icon will appear as GAS500 or GAS250,

depending you max threshold.

Connect the tube of the gas cylinder to the

SEM5000 inlet, [1].

Press the “Function” button [2] to start the

test “GAS 500- 1”.

TEST STARTED will appear on the display and

the pump will start.

Press the “Function” button [2] to stop the test

after you have reached a stabilized reading.

Attention: The duration of this test is min 0

seconds / max 30 seconds.

Attention: If the test fails, you'll have to do it

again.

Repeat these steps for the remaining tests, (AIR – 2 / GAS 500 – 2 /

AIR – 3 / GAS 500 – 3).

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