LANDTEC SEM5000 User manual

SEM5000
Surface Emissions Monitor
OPERATING MANUAL
QED Environmental Systems, Inc.
2355 Bishop Circle West
Dexter, MI. 48130

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SEM5000.002
© QED Environmental Systems Inc.
SEM5000 Surface Emissions Monitor
TABLE OF CONTENTS
ATEX WARNINGS .................................................................................................................................................... 4
General Description ............................................................................................................................................... 5
User Interface ......................................................................................................................................................... 6
Overview ............................................................................................................................................................ 6
Connections ........................................................................................................................................................ 7
Display ................................................................................................................................................................ 7
Navigation .......................................................................................................................................................... 8
Using the SEM5000 ................................................................................................................................................ 9
Turning the instrument ON ................................................................................................................................ 9
Turning the instrument OFF ............................................................................................................................ 10
Using GPS ......................................................................................................................................................... 10
GPS Activation .............................................................................................................................................. 10
SEM5000 Set Up ............................................................................................................................................... 11
Field Calibration ............................................................................................................................................... 13
Air Test 1 ...................................................................................................................................................... 14
Gas Test 1 ..................................................................................................................................................... 15
Air Test 2 ...................................................................................................................................................... 16
Gas Test 2 ..................................................................................................................................................... 17
Air Test 3 ...................................................................................................................................................... 18
Gas Test 3 ..................................................................................................................................................... 18
Up Wind Test ................................................................................................................................................ 19
Down Wind Test ........................................................................................................................................... 20
Functions .......................................................................................................................................................... 21
Data Save Options ........................................................................................................................................ 21
Delete Memory ............................................................................................................................................ 22
Concentration Measurement ...................................................................................................................... 22
Alarms ........................................................................................................................................................... 22
Backlight and Contrast ................................................................................................................................. 23
Bluetooth ...................................................................................................................................................... 23
Maintenance ........................................................................................................................................................ 24

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SEM5000 Surface Emissions Monitor
Changing the Battery ....................................................................................................................................... 24
Charging the Battery ........................................................................................................................................ 25
Replacing the Water Trap Filter ....................................................................................................................... 27
Extendable Sample Probe Maintenance ......................................................................................................... 28
Replacing the Dust Filters ............................................................................................................................ 28
Replacing the Sample Tubing ........................................................................................................................... 30
Factory Calibration ........................................................................................................................................... 33
Instrument Specifications .................................................................................................................................... 34
Trouble Shooting .................................................................................................................................................. 36
Pump Error ....................................................................................................................................................... 37
Restarting the Pump ........................................................................................................................................ 37
Replacement Parts ............................................................................................................................................... 38
SEM5000 Warranty .............................................................................................................................................. 39
Appendix A – Safe Use of the Instrument ........................................................................................................... 40
Laser Radiation ................................................................................................................................................. 40
Other Precautions for Usage ........................................................................................................................... 40
Testing and Maintenance ................................................................................................................................ 40
Repair ............................................................................................................................................................... 40
Appendix B – Bluetooth Module Compliance ..................................................................................................... 41
United States .................................................................................................................................................... 41
Canada .............................................................................................................................................................. 41
Europe .............................................................................................................................................................. 42
Appendix C – EU Declaration of Conformity ....................................................................................................... 43

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SEM5000.002
© QED Environmental Systems Inc.
SEM5000 Surface Emissions Monitor
ATEX WARNINGS
Read the entire SEM5000 User Manual prior to operating the instrument
This warning is issued to ensure proper knowledge of the instrument’s operation.
Replacment of the battery must only be performed in non-hazardous areas
Do not charge the battery in hazardous areas
The charging of the batteries must be performed only in a safe place with the appropriate
external adapter
QED SEM-BC
.
Do not open the instrument
Only authorized personnel can open the instrument for maintenance and repair.
The opening of the instrument by unauthorized personnel will void the product warranty.
Maximum voltage Um < 15V
The maximum voltage that can be applied to the non-intrinsically safe connection facilities of
associated apparatus (battery charger) without invalidating the type of protection is 15 volts.
Antistatic Personal Protection Equipment
The operator shall be equipped with a complete antistatic Personal Protection Equipment
(PPE), in combination with conductive or dissipative ground, and shoes with a resistance
below 108Ω.
Do not connect the SEM5000 instrument, SEM5000 battery or SEM5000 battery charger
to other equipment
These devices are only designed to be used together in order to work properly and guarantee
the safety of the users.
Atex accessories
Use only the following accessories with the instrument SEM5000:
Ø Rechargeable battery pack lithium ion (PBLO.NNNN.YY 3,7V 4000mAh)
Code: 205014
Ø Battery charger (CCLO.NNNNN.YY)
Code: 100189
Ø Power supply (Um<15 volts)
Code: 423007

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SEM5000.002
© QED Environmental Systems Inc.
SEM5000 Surface Emissions Monitor
GENERAL 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 48 hours of scan data.
The SEM5000 is the perfect, easy-to-use instrument for accurately measuring and recording
methane concentrations during surface emissions monitoring.
The SEM 5000 exists in Atex version and has been certified with the intrinsic safety protection
mode and has obtained the following marking:
II 2 G Ex ib op is IIB T3 Gb -25°C<TA<+50°C
In hazardous environment the user must take care of the following standards EN 1127-1:2011
(Explosive atmospheres- Explosion prevention and protection - Basic concepts and
methodology) and CLC/TR 50404:2003 (“Electrostatics Code of practice for the avoidance of
hazards due to static electricity”).
ATTENTION:
The photos shown in this user manual are indicative.

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SEM5000 Surface Emissions Monitor
USER INTERFACE
Overview
Description
[A]
ON/OFF button + Backlight
[B]
Function button
[C]
Buzzer
[D]
Selector Dial
[E]
LED Alarm Lights and Impact Bumpers
[F]
Strap Connectors
A
B
C
D
E
F

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SEM5000 Surface Emissions Monitor
Connections
Display
Description
[A]
Gas Sample Inlet and
Water Trap Filter
Holder
[B]
Battery Charger/Data
Download Connector
DESCRIPTION
[A]
Pump Status/Save Location/GasTest Indicators
[B]
Audible Alarm Status
[C]
GPS Status
[D]
Battery Charge Status
[E]
Bluetooth (when connected to your PC, icon will change to
[F]
Percentage of Memory Used
[G]
Concentration Level of Sample
[H]
Test Status Indicator/Gas Threshold
[I]
Reading Type (ABS)/Gas Measured (CH4)/Scale of Measurement (PPM or %VOL)
A
B
A
B
C
D
E
G
H
I
F

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SEM5000 Surface Emissions Monitor
Navigation
Push the green selector dial and the menu will appear in the display window.
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 the Option menu is active, the concentration value of the gas sample is shown in the
upper right-hand corner of the display. The exceedance threshold is displayed in the lower
right-hand corner of the display.
Select “ESC” to exit the Options menu.
Start Test
– Begin pre- scan span gas test
Stop Test
– Complete pre-scan span gas test
Select Gas 500/200/100
– Choose PPM value of exceedance threshold
ON/OFF Pump
– Start and stop pump
ON/OFF Buzzer
– Enable and disable audible exceedance alarm
ON/OFF GPS
– Enable and disable GPS
ON/OFF Log
– Start and stop auto save for scan data
Sel. Save Interval
– Select auto save interval, (1 second to 10 seconds)
Save Event
– Manually save an additional event during auto save
Delete Memory
– Clear all saved data
LCD Contrast
– Adjust display contrast
Manual Save
– Manually save readings during scan, (disables auto save)
ESC
– Exit Option menu

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SEM5000 Surface Emissions Monitor
USING THE SEM5000
Turning the instrument ON
Press and hold the ON/OFF button for few seconds, until the display is activated.
The start-up sequence includes several steps:
The Landtec Logo is displayed
Information about the version of the instrument firmware, serial number of the instrument,
next recommended calibration date is displayed
NOTE: If there is existing data stored in the instrument’s memory from a previous survey,
the message “DATA TO DOWNLOAD” will appear at the bottom of the screen.
The instrument will warm up. The warm up lasts approximately 20-30 seconds.
NOTE: 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
A concentration level will be displayed. This is the actual measurement of methane in the
atmosphere. Naturally occurring methane levels in atmosphere are typically 2.5ppm
The SEM5000 is now ready to operate

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SEM5000 Surface Emissions Monitor
Press the Function button to turn off the pump.
An “X” will appear over the pump icon in the upper left corner to indicate that the pump is
off.
Turning the instrument OFF
To switch off the instrument, press and hold the ON/OFF button [A] for a few seconds.
A shut off message will appear on the display and will count down to shut off.
Using GPS
Upon start up, the GPS is not active. It must be activated prior to field calibration.
NOTE: Data is only acquired and saved when the GPS is active
GPS Activation
• Push the Selector dial to display the Option menu
• Use the Selector dial to scroll through options to ”ON/OFF GPS”
• Push the Selector dial to turn on the GPS
• Press the selector dial to confirm the selection. An “X” will appear over the GPS globe
icon at the top of the screen while it attempts to acquire a signal
• Once the signal has been acquired, the “X” over the GPS icon will be replaced by the
letters “GPS” with alternating blue and white dots at the corners of the icon
NOTE: GPS must be activated in order for the instrument to save any scan data

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SEM5000 Surface Emissions Monitor
NOTE: The GPS module is a high-performance receiver with the ability to track up to 20
satellites.
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 1 to 3 minutes.
In the event of signal loss during the survey, the instrument will continue to log gas values
and will associate the to the last saved tracked GPS position until the signal is reacquired.
SEM5000 Set Up
Once GPS has been activated, survey parameters will need to be set up. Gas Exceedance
levels and data storage preferences must be selected.
• Push the Selector dial to display the Option menu and scroll to the “Select Gas
500/250/100” option and press the Selector dial to display the gas concentration
menu
• Scroll to choose 500, 250 or 100 parts per million and push the Selector dial to store
your choice
• Push the Selector dial and scroll to the “Log” option
• Press the selector dial again to choose “ON” or “OFF”
Icon
Description
Icon
Description
GPS active but waiting for
signal
GPS off
GPS active
Save location

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SEM5000 Surface Emissions Monitor
NOTE: Once logging has been turned “ON” or “OFF” it will remain in that mode until
changed by the user.
The “Log” function must be turned “ON” in order for the SEM5000 to automatically save
survey readings.
When the “Log” function is not activated, the word “OFF” will appear at the bottom of
the display screen.
When the “Log” function is activated, the percent symbol, (%), will be displayed at the
bottom of the screen. During the survey, this will indicate the percentage of available
memory that has been used.
• Press the Selector dial and scroll to the “Select Save Interval” option and push the
Selector dial to display time save options
• Scroll to select auto save time, (1 second to 10 seconds), and press again to confirm
your selection
NOTE: If you do not wish to utilize the Auto Save function, bypass the “Select Save
Interval” option and instead activate the “Manual Save” option.
This option will allow you to use the “Function” button to manually save readings at
desired intervals.
• The instrument is now ready for field calibration

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SEM5000 Surface Emissions Monitor
Field Calibration
Field calibration consists of three alternating measurements between two calibration gases,
(zero air and methane)
• Connect demand-flow gas regulator(s) to calibration gas bottles
NOTE: The regulator flow must be a minimum of 0.6L/min to avoid restricting the pump.
The SEM5000 package is provided with one demand-flow regulator with a C10 fitting. It is
recommended that two regulators be used, (one per bottle), for ease of calibration.
• Push the Selector Dial, scroll to the “Start Test” option and press the Selector dial
again
• The instrument will guide you through the field calibration procedure with alternating
icons appearing in the upper left corner of the screen to indicate
• Air
• Gas250/500
• Upwind Test
• Downwind Test
• The screen will also display instructions to start, stop and track each test

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SEM5000 Surface Emissions Monitor
• Once you have selected “Start Test”, the screen will display the instructions, “Press F
to start Air 1”
Air Test 1
• Connect the tubing from the gas regulator for the zero air calibration gas to the
sample inlet of the SEM5000
NOTE: If the tube is not fully inserted into the sample inlet of the SEM5000, the
concentration readings during field calibration may appear to be erratic and difficult to
stabilize.
• Press the Function, (F) button
• The pump will start and the display will begin to count down as the zero air is drawn
into the SEM5000
• Once the reading has stabilized on the display, press the Function, (F) button again to
stop the pump and complete Air Test 1
• Stabilization will take approximately 20-30 seconds

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SEM5000 Surface Emissions Monitor
• Once you stop the pump to complete Air Test 1, the screen will display the
instructions, “Press F to start Gas 1”
Gas Test 1
• Disconnect the zero air tube from the sample inlet of the SEM5000 and connect the
tubing from the gas regulator to the methane calibration gas to the sample inlet of
the SEM5000
• Press the Function, (F) button
• The sample concentration display will count up to the highest reading as it samples
the bottled gas
• The gas test is timed and will continue for twenty seconds. The remaining time is
displayed above the sample concentration level
• Once the 20 second test time is complete, the message “TEST OK SAVED” will appear
on screen.
• When “TEST OK SAVED” appears, remove the tube from the sample inlet of the
SEM5000
• The pump will continue to run for several seconds to clear any residual
methane from the chamber before the next test begins.

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SEM5000 Surface Emissions Monitor
• After purging for several seconds, the pump will shut off automatically
• After the pump shuts off, the instructions “Press F to start Air 2” will appear
Air Test 2
• Connect the tubing from the gas regulator for the zero air calibration gas to the
sample inlet of the SEM5000
• Press the Function, (F) button
• The pump will start and the display will begin to count down as the zero air is drawn
into the SEM5000
• Once the reading has stabilized on the display, (this will take approximately 30
seconds), press the Function button again to stop the pump and complete Air Test 2
• Once you stop the pump to complete Air Test 2, the screen will display the
instructions, “Press F to start Gas 2”

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SEM5000 Surface Emissions Monitor
Gas Test 2
• Disconnect the zero air tube from the sample inlet of the SEM5000 and connect the
tubing from the gas regulator to the methane calibration gas to the sample inlet of
the SEM5000
• Press the Function, (F) button
• The sample concentration display will count up to the highest reading as it samples
the bottled gas
• The gas test is timed and will continue for twenty seconds. The remaining time is
displayed above the sample concentration level
• Once the 20 second test time is complete, the message “TEST OK SAVED” will appear
on screen.
• When “TEST OK SAVED” appears, remove the tube from the sample inlet of the
SEM5000
• The pump will continue to run for several seconds to clear any residual
methane from the chamber before the next test begins.
• After purging for several seconds, the pump will shut off automatically
• After the pump shuts off, the instructions, “Press F to start Air 3” will appear

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SEM5000 Surface Emissions Monitor
Air Test 3
• Connect the tubing from the gas regulator for the zero air calibration gas to the
sample inlet of the SEM5000
• Press the Function, (F) button
• The pump will start and the display will begin to count down as the zero air is drawn
into the SEM5000
• Once the reading has stabilized on the display, (this will take approximately 20 to 30
seconds), press the Function button again to stop the pump and complete Air Test 3
• Once you stop the pump to complete Air Test 3, the screen will display the
instructions, “Press F to start Gas 3”
Gas Test 3
• Disconnect the zero air tube from the sample inlet of the SEM5000 and connect the
tubing from the gas regulator to the methane calibration gas to the sample inlet of
the SEM5000
• Press the Function, (F) button
• The sample concentration display will count up to the highest reading as it samples
the bottled gas
• The gas test is timed and will continue for twenty seconds. The remaining time is
displayed above the sample concentration level

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SEM5000 Surface Emissions Monitor
• Once the 20 second test time is complete, the message “TEST OK SAVED” will appear
on screen.
• When “TEST OK SAVED” appears, remove the tube from the sample inlet of the
SEM5000
• The pump will continue to run for several seconds to clear any residual
methane from the chamber before the next test begins.
• After purging for several seconds, the pump will shut off automatically
• After the pump shuts off, the screen will display the instructions, “Press F to start Up
Wind Test”
Up Wind Test
• Move to your established “Up Wind” test location and press the Function button, (F)
to start the Up Wind test
• The Up Wind test is is a timed test and will draw a sample of atmosphere in through
the sample inlet for 30 seconds
• The time remaining in the Up Wind test will be displayed above the sample
concentration level

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SEM5000 Surface Emissions Monitor
• Once the test is complete, the pump will automatically shut off and the instruction
“Press F to start Down Wind test” will be displayed
Down Wind Test
• Move to your established “Down Wind” test location and press the Function, (F)
button to start the Down Wind test
• The Down Wind test is is a timed test and will draw a sample of atmosphere in
through the sample inlet for 30 seconds
• The time remaining in the Down Wind test will be displayed above the sample
concentration level
• Once the test is complete, the pump will automatically shut off and the instruction
“Press F to start SURVEY” will be displayed
• Field calibration is now complete and the calculated exceedance value is displayed in
the lower right corner