Grimm Mini-LAS 11-R User manual

Portable Laser Aerosol Spectrometer
Model Mini-LAS 11-R

Model 11-R
GRIMM AEROSOL TECHNIK GmbH & Co.KG Seite 2 von 83
Address:
GRIMM Aerosol Technik GmbH & Co. KG
Dorfstraße 9
83404 Ainring
GERMANY
Internet: www.grimm-aerosol.com
E-Mail: [e-mail]
Telephone: [phone]
Fax: [phone]
Registration office Traunstein, German Commercial Register (HRB) 4803
Manager: Dr.-Ing. Hans-Jürgen GRIMM

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Table of contents
1Instructions for safe operation ......................................................8
1.1 Comments................................................................................................................................ 8
1.2 Warranty................................................................................................................................... 9
1.3 Explanation of symbols.......................................................................................................... 10
1.4 Fundamental safety instructions ............................................................................................ 11
1.4.1 Safety provisions.................................................................................................................... 11
1.4.2 Electrical safety...................................................................................................................... 11
1.4.3 Laser safety............................................................................................................................ 12
1.4.4 Electrostatic sensitivity........................................................................................................... 12
1.4.5 Declaration of conformity ....................................................................................................... 13
1.5 Intended use and fields of application.................................................................................... 14
1.5.1 Operating environment........................................................................................................... 14
1.5.2 Information about direct/remote control................................................................................. 14
1.5.3 Notes on starting/stopping measurements ............................................................................ 14
1.5.4 Self-test of the Mini-LAS 11-R ............................................................................................... 14
1.5.5 Restrictions on use and fields of application.......................................................................... 14
1.5.6 Ambient conditions................................................................................................................. 14
1.6 Transportation........................................................................................................................ 15
1.7 Storage................................................................................................................................... 15
1.8 Disposal ................................................................................................................................. 16
1.8.1 Expected service life of the device and planned disposal ..................................................... 16
1.8.2 Disposal of consumables....................................................................................................... 16
2Device description......................................................................17
2.1 Connections on the Mini-LAS 11-R........................................................................................ 17
2.1.1 Connections on the cover, front and right side panel ............................................................ 17
2.1.2 Filter chamber and certifications on the rear of the device.................................................... 19
2.2 Display.................................................................................................................................... 20
2.3 LED display............................................................................................................................ 20
2.3.1 Humidity indicator................................................................................................................... 20
2.3.2Particle concentration............................................................................................................. 21
2.4 Data storage with SD card..................................................................................................... 21
2.4.1 Initialising the memory card ................................................................................................... 22
2.4.2 Meaning of the LEDs next to the card slot............................................................................. 23
2.4.3 Data preservation and storage times..................................................................................... 23
2.5 Membrane keyboard and key functions................................................................................. 24
2.5.1 Button functions in standby mode.......................................................................................... 25
2.5.2 Button functions in operating mode ....................................................................................... 27
2.5.3 Brief overview of the button functions.................................................................................... 29
2.6 Sample intake ........................................................................................................................ 30
2.6.1 Using the radially symmetrical suction head (1111) .............................................................. 30
2.6.2 Removing the suction head ................................................................................................... 30
2.7 Analogue jack......................................................................................................................... 31
2.8 Mains charger connection...................................................................................................... 31

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2.9 RS-232 interface .................................................................................................................... 32
2.10 Bluetooth interface................................................................................................................. 32
2.11 USB (universal serial bus) connection................................................................................... 33
2.12 LAN (local area network) connection..................................................................................... 33
2.13 GPS antenna.......................................................................................................................... 35
2.14 Filter chamber........................................................................................................................ 35
2.15 PTFE filter .............................................................................................................................. 36
2.16 Laser warnings....................................................................................................................... 36
2.17 Sunlight warning..................................................................................................................... 36
2.18 Calibration label ..................................................................................................................... 36
2.19 Device designation and serial number................................................................................... 37
2.20 Sample air discharge ............................................................................................................. 37
3Particle measuring with GRIMM dual technology .......................38
3.1 Measuring principle................................................................................................................ 39
3.2 Calibration, physical background........................................................................................... 41
4Measurements ...........................................................................44
4.1 Putting into operation............................................................................................................. 44
4.2 Measurement ......................................................................................................................... 46
4.3 Measuring mode and measurement display.......................................................................... 46
4.4 Mode switching particle count/particle mass.......................................................................... 47
4.5 Gravimetric control of the dust mass and Determining the gravimetry factor (C-factor) ....... 47
5Analysis software .......................................................................49
5.1 Terminal software via RS-232 interface................................................................................. 49
5.1.1 Transmission protocol............................................................................................................ 49
5.1.2 Establishing a HyperTerminal connection.............................................................................. 49
5.1.3 RS-232 commands ................................................................................................................ 51
5.1.4 Service mode setting.............................................................................................................. 56
5.1.5 RS-232 measurement transmission....................................................................................... 58
5.1.6 Model 11-R, version 12.40, particle number measuring mode (counts)................................ 60
5.1.7 Model 11-R version 12.40 measuring mode channel masses in µg/m³................................. 60
5.2 GRIMM Windows 1178 software incl. Installation of the software:........................................ 61
5.3 Troubleshooting (display messages and status indicators)................................................... 65
6Maintenance and cleaning..........................................................66
6.1Maintenance and cleaning by the customer .......................................................................... 66
6.1.1 Filter chamber........................................................................................................................ 66
6.1.2 Cleaning the measuring chamber.......................................................................................... 67
6.1.3 Housing …………………………………………………………………………………………..…67
6.2 Replacement of the PTFE filter.............................................................................................. 68
6.4 K-line, function test of the optical measuring cell, laser diode and photo diode.................... 70
6.5 Repair..................................................................................................................................... 71

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7Technical specification ...............................................................72
7.1 Pneumatics ............................................................................................................................ 72
7.2 Technical data........................................................................................................................ 73
7.2.1 Nominal rating of the 11-R model series................................................................................ 73
7.2.2 Technical data for the 11-R model series.............................................................................. 73
7.3 Accessory list......................................................................................................................... 75
7.4 Sample collector..................................................................................................................... 77
7.4.1 Radially symmetrical suction head (model 1111) .................................................................. 77
7.4.2 Clean room sample collection heads with stand (model 1151A)........................................... 78
7.4.3 Isokinetic duct probe for 2 to 25 m/s (model 1152)................................................................ 79
7.4.4 Installation of the duct probe 1152......................................................................................... 80
7.5 Zero filter (model 1148).......................................................................................................... 81
7.6 Temperature and relative humidity sensor (model 1158-EE)................................................ 81
7.7 Temperature, humidity and air speed sensor (model 1154).................................................. 82

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List of figures
Figure 1-1: Safely labelling in and on the Mini-LAS 11-R ........................................................................12
Figure 2-1: Control elements on the cover, front and right side panel of the Mini-LAS 11-R ..................17
Figure 2-2: Control-elements on the left side of the Mini-LAS 11-R ........................................................18
Figure 2-3: Control elements and labelling on the underside of the Mini-LAS 11-R................................19
Figure 2-4: Display of the MiniLAS-11-R..................................................................................................20
Figure 2-5: Humidity indicator...................................................................................................................20
Figure 2-6: Particle concentration ............................................................................................................21
Figure 2-7: Explanation of the particle concentration display...................................................................21
Figure 2-8: Explanation of the particle concentration display...................................................................21
Figure 2-9: Inserting the memory card .....................................................................................................22
Figure 2-10: Function-LEDs .....................................................................................................................23
Figure 2-11: Membrane keyboard on the Mini-LAS 11-R with the 10 function keys................................24
Figure 2-12: Inserting the suction head....................................................................................................30
Figure 2-13: Removing the suction head .................................................................................................30
Figure 2-14: Pin assignment of the analogue input jack ..........................................................................31
Figure 2-15: Battery/Location button........................................................................................................31
Figure 2-16: Section of 1112C type plate with polarity information..........................................................31
Figure 2-17: Configuring the TCP/IP connection......................................................................................34
Figure 2-18: GPS-antenna .......................................................................................................................35
Figure 2-19: Filter chamber......................................................................................................................35
Figure 2-20: Sunlight warning label..........................................................................................................36
Figure 2-21: Calibration label ...................................................................................................................36
Figure 2-22: Type plate ............................................................................................................................37
Figure 2-23: Sampling air discharge ........................................................................................................37
Figure 3-1: Measuring principle (schematic)............................................................................................39
Figure 3-2: Schematic of the laser measuring chamber ..........................................................................40
Figure 3-3: Screenshot of the GRIMM calibration software during with a................................................42
Figure 3-4: Calibration; Simultaneously measured particle concentration...............................................43
Figure 4-1: Open filter chamber ...............................................................................................................44
Figure 5-1: HyperTermninal properties ....................................................................................................49
Figure 5-2: Transmission parameters .....................................................................................................50
Figure 5-3: Recording text........................................................................................................................50
Figure 5-4: Saving the text file..................................................................................................................50
Figure 5-5: Help screen of the Mini-LAS 11-R .........................................................................................55
Figure 5-6: Expanded help screen of the 11-R ........................................................................................56
Figure 5-7: Home screen of the 1178 software........................................................................................62
Figure 5-8: Measuring interval settings ....................................................................................................62
Figure 5-9: Time synchronisation.............................................................................................................62
Figure 5-10: Setting user information.......................................................................................................63
Figure 5-11: Count values........................................................................................................................63
Figure 5-12: Graphical particle count distribution.....................................................................................64
Figure 5-13: Particle mass distribution.....................................................................................................64

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Figure 6-1: Cleaning the filter chamber....................................................................................................66
Figure 6-2: Cleaning the measuring chamber..........................................................................................67
Figure 6-3: Filter removal .........................................................................................................................68
Figure 6-4: Cleaning the filter chamber....................................................................................................68
Figure 6-5: Inserting the new filter............................................................................................................68
Figure 7-1: Pneumatics schematic of the Mini-LAS 11-R ........................................................................72
Figure 7-2: Required and recommended accessories for the Mini-LAS 11-R .........................................75
Figure 7-3 Suction head...........................................................................................................................77
Figure 7-4: Suction head storage.............................................................................................................77
Figure 7-5: Removing the suction head ...................................................................................................77
Figure 7-6: Removing the suction head ...................................................................................................78
Figure 7-7: Duct probe..............................................................................................................................79
Figure 7-8: Parts of the duct probe...........................................................................................................79
Figure 7-9: Functional principle of the isokinetic duct probe 1152...........................................................80
Figure 7-10: Zero filter..............................................................................................................................81
Figure 7-11: Sensor 1158-EE...................................................................................................................81
Figure 7-12: Sensor 1154.........................................................................................................................82

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1 Instructions for safe operation
1.1 Comments
Many software and hardware designations used in this manual are registered trademarks and have to
be treated as such. The author has attempted to provide complete and accurate information in this
manual. GRIMM Aerosol Technik does not guarantee the integrity and accuracy of this information.
Therefore, it is not liable for damages caused directly or indirectly due to the use of this information, the
hardware or the software. Furthermore, GRIMM Aerosol Technik is not responsible for damages due to
the abuse of patent rights or third-party rights.
Since the hardware and software is always being improved and expanded, deviations are possible be-
tween the descriptions and illustrations in this manual and the hardware and software delivered to you.
Please request a current version of this document if needed.
All rights reserved. No part of this manual may be duplicated (printed, copied, microfilmed or other), or
duplicated, reproduced or modified with the use of electronic systems, except with the written permis-
sion of the company GRIMM Aerosol Technik.
Study the operating instructions in detail before operating the hardware and software! The
manufacturer is not liable for damages caused by improper putting into operation, use, clean-
ing or by operating errors.
Copyright © 2014, 2015 by GRIMM Aerosol Technik GmbH & Co. KG, Ainring, Germany
GRIMM Aerosol Technik GmbH & Co. KG
Dorfstraße 9
D-83404 Ainring, Germany
Telephone: ++49 / 86 54 / 5 78 –0
Fax: ++49 / 86 54 / 5 78 –35
E-mail: [e-mail]
Homepage: www.grimm-aerosol.com
This manual applies to the mobile dust monitor Mini-LAS 11-R
M_E_IAQ_11-R_v3-13.docx

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1.2 Warranty
The company GRIMM Aerosol Technik warrants to each customer that the device described in this doc-
ument has been developed, designed and manufactured according to the existing technical require-
ments for the application described. The device is free of material defects and has passed strict quality
inspections. However, no further warranty is given for an application-specific function or damages due
to material defects or assembly errors. Detailed records are prepared for each unit through production
technology, especially the calibration and validation data.
Should the device fail during the 1-year warranty period or fail to meet the requirements, the company
GRIMM Aerosol Technik has the right to replace defective parts or the device; operating errors are ex-
cepted. The company GRIMM Aerosol Technik shall perform repairs free of charge at the factory. Only
transportation costs and the resulting incidental costs are borne by the customer. On-site repairs are
only carried out in exchange for reimbursement of the travel expenses and service costs. GRIMM as-
sumes no liability for any further claims that would be derived from the warranty.
GRIMM only warrants the goods sold if they are used under normal conditions and according to the
instructions in this manual. The warranty expires at the end of the 12-month period, starting on the day
of delivery from the plant. Returns for warranty work are at the customer’s expense.
The warranty is subject to the following exceptions:
For replacement parts that are replaced or repaired during the warranty period in order to make
the device operational again, the warranty is 90 days under conditions of normal use.
The supplier is not liable for third-party products, batteries or consumables –only the original
warranty is maintained.
Without its written confirmation, GRIMM offers no warranty on parts from suppliers that were
modified and/or removed or installed by untrained personnel.
All of the above replaces any other warranty agreements and/or restrictions. There are no fur-
ther warranty claims, especially outside of normal use.
The buyer is responsible for use and/or operation. Complying with the applicable legal require-
ments and regulations as well as operating the device in accordance with the applicable legal
and operating technology provisions is the responsibility of the buyer. Deviations void the war-
ranty.
Legal means against GRIMM from any party after more than 12 months are groundless.
The buyer and seller agree that this LIMITATION OF LIABILITY which describes the require-
ments and limits shall not be called into question. Both partners are general merchants accord-
ing to German law.
Should a dispute nevertheless arise, the jurisdiction is Traunstein in the Federal Republic of
Germany.

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1.3 Explanation of symbols
This manual uses the following graphical symbols to make important information easier to find:
This symbol points out useful tips that can simplify and optimise your work.
This symbol points out specific hazards that can lead to malfunctions or even damage
to the hardware, and describes how these can be avoided.

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1.4 Fundamental safety instructions
1.4.1 Safety provisions
The manufacturer rejects any direct or indirect liability if the operator opens or manipulates the device!
The device was built and inspected according to DIN EN 61326-1: 2013 “Electrical equipment for
measurement, control and laboratory use –EMC requirements”, and left the plant in flawless safety-
related condition. In order to maintain this condition and ensure safe operation, the user has to observe
the information and warnings contained in these instructions for use.
If it can be assumed that safe operation is no longer possible, the device must be taken out of operation
and secured against unintended use. It can be assumed that safe operation is no longer possible in the
following cases:
If the device exhibits visible damage
If the device no longer functions after use
After extended storage under unfavourable conditions
After transportation under unfavourable conditions
Failure to observe the acclimatisation time after transportation at low temperatures prior to operation
can cause damage to the pump due to condensation. In this case the electronic overcurrent protection
device will shut the unit down entirely. The wait time until resuming operation can be reduced by drying
in a heating cabinet. GRIMM Aerosol Technik recommends an acclimatisation time of approximately 8
hours at approximately 20°C and 40-45% relative humidity.
Do not operate the measuring equipment without the PTFE filter, since the PTFE
filter is installed before the pump and therefore protects it!
1.4.2 Electrical safety
Before using the power supply, verify that the mains voltage is in the allowable range for the device. The
dust monitor may only be operated with the specified voltage (power supply, 18V).
The installed lithium-ion battery (Li-Ion battery back 11.1V 48.8 Wh) is used to operate the de-
vice without requiring a mains connection and may only be replaced by an authorised service
technician.
The fuses installed in the device may only be replaced by trained service personnel! Since the
device is protected by an electronic overcurrent protection device, the fuses only burn out in
case of a serious fault.

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1.4.3 Laser safety
The aerosol spectrometer may only be opened by trained service personnel. Class 3B laser radiation
may be emitted if the laser unit is opened. The maximum output of class 3B lasers in continuous-wave
operation is 0.5 watts. Looking directly into the beam or a mirrored reflection can cause eye damage,
even with only a short exposure time.
Consult DIN EN 60825 for further information. The corresponding requirements of the Employer's Liabil-
ity Insurance Association Regulation (BGV) B2 “Laser Radiation” must be observed!
The warnings shown here are found on the underside of the device or directly in the device on the laser
holder, warning the user against laser radiation if the device is opened. Class 1 laser when the measur-
ing device is closed! Class 1 lasers are safe and not hazardous to the eyes, i.e. even in case of misuse
or with the use of optical devices (e.g. telescope, microscope etc.).
1.4.4 Electrostatic sensitivity
When exposed to high levels of electrostatic charges, the Mini-LAS restarts.
When operating the Mini-LAS, please take note of possible electrostatic sources and do not operate the
Mini-LAS in their vicinity. Special ESD-safe clothing is not required to operate the Mini-LAS 11-R.
Attention! Laser class 3B when the measuring device is opened!
Figure 1-1: Safely labelling in and on the Mini-LAS 11-R

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1.4.5 Declaration of conformity

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1.5 Intended use and fields of application
1.5.1 Operating environment
The Mini-LAS 11-R is intended for use in occupational safety and health protection, dust monitoring and
also as a research device by universities and research institutions. It is intended for indoor use.
1.5.2 Information about direct/remote control
The Mini-LAS 11-R can be controlled both directly and remotely.
With its comprehensive interface configuration (Bluetooth, USB, LAN, RS232), it is flexible in regards to
data transmission and only limited by the maximum cable length or effective range of the wireless con-
nection.
1.5.3 Notes on starting/stopping measurements
A measurement starts after the device is powered up and has passed the self-test.
Measurement operation can be ended manually at any time by pressing the standby button. To obtain
complete measurement series, the measurement should always be terminated at the end of the meas-
uring interval by pressing the standby button or via the software.
1.5.4 Self-test of the Mini-LAS 11-R
Each time the device starts, it performs a self-test which provides information about the device status.
The 11-R also asks every time whether the integrated PTFE filter has been replaced.
1.5.5 Restrictions on use and fields of application
To maintain the Mini-LAS 11-R in functional condition, the technical data for the device summarised in
Section 7 must be observed. These restrictions apply both to the number of particles being measured
and the expected relative humidity at the planned measuring location. A coincidence error may occur if
the particle concentration is too high. At a particle concentration in excess of 2,000,000 particles per
litre, the sample air should be diluted with dry, particle-free air.
If the relative humidity is too high, there is a risk of condensation in the device which can lead to exten-
sive damage. On the other hand, the water droplets may condense on the particles and lead to wrong
results for them being detected bigger than they actually are.
In case of doubt or questions about the use of the Mini-LAS 11-R, contact the dealer or sales repre-
sentative of GRIMM Aerosol Technik GmbH & Co. KG nearest you.
1.5.6 Ambient conditions
The Mini-LAS 11-R is designed for the ambient conditions of indoor measurements. With corresponding
accessories such as the isokinetic duct probe, the Mini-LAS 11-R can also be used in flow areas such
as air ducts.

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1.6 Transportation
The goods described here are delivered in a carton or case. Please verify that the delivery is complete
and free of visible damage. If transport damage is discovered at the time of delivery, this must be re-
ported immediately. For safety reasons, do NOT operate the device in this case. The device must be
switched off for transportation and only the original packaging may be used. The aerosol intake has to
be closed with the cover cap. Please note that the device contains a lithium-ion battery which may not
be exposed to ambient temperatures higher than 50°C.
You will find this label on the underside of the Mini-LAS 11-R. It advises you not to expose the measur-
ing device itself or the Mini-LAS 11-R in the transport case to direct sunlight or high temperatures. Oth-
erwise device damage or failure may result.
Especially after transporting the device at low temperatures, sufficient acclimatisation time
must be allowed before operating it. Otherwise malfunctions may occur or the device may
fail entirely.
1.7 Storage
The device must be switched off for transportation and storage, and only the original packaging may be
used. The aerosol intake has to be closed with the cover cap. Please note that the device contains a
lithium-ion battery which may not be exposed to ambient temperatures higher than 50°C during storage.
Please inspect all parts of the measuring system after unpacking. If it can be assumed that safe opera-
tion is no longer possible, the device cannot be put into operation and must be secured against unin-
tended use.
It can be assumed that safe operation is no longer possible in the following cases:
If the device exhibits visible damage
If the device no longer functions after use
After extended storage under unfavourable conditions
After transportation under unfavourable conditions
Figure 1 1: Sunlight warning

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1.8 Disposal
1.8.1 Expected service life of the device and planned disposal
When used as intended and with regular service or corresponding maintenance by an authorised ser-
vice technician, the Mini-LAS 11R has a service life of many years. Statements about the expected ser-
vice life cannot be made and depend on the applications for the device.
1.8.2 Disposal of consumables
PTFE filters for the Mini-LAS 11-R are considered consumables. These PTFE filters, provided the dust
they were exposed to is free of contaminants, are disposed of in household or commercial waste.
If substances that are hazardous to health were knowingly or presumably collected with the dust in the
PTFE filter, the PTFE filter must be handled according to the respective contaminants. Pertinent infor-
mation on proper disposal is available from your specialised disposal firm.

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2 Device description
Only put the device into operation after reading this manual!
2.1 Connections on the Mini-LAS 11-R
The section that follows explains the various control elements of your dust monitor. In operating the
device, one differentiates between standby mode and operating mode. All settings can be read and
changed. In operating mode, the device and all settings are fixed and cannot be changed.
2.1.1 Connections on the cover, front and right side panel
1
Display
6
Membrane keyboard
2
Operational readiness LED
7
Sample intake (closed)
3
Memory card LED
8
Analogue jack
4
Memory card slot
9
RS-232 interface
5
Status LED
10
Mains charger connection
1
3
4
2
4
5
6
8
Figure 2-1: Control elements on the cover, front and right side panel of the
Mini-LAS 11-R
1
2
3
5
6
7
9
10
4
8

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11
Bluetooth antenna
12
Connection for GPS antenna
13
Aerosol output
14
LAN connection
15
USB-B connection
16
USB-A connection
Figure 2-2: Control-elements on the left side of the Mini-LAS 11-R
11
12
13
14
15
16

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2.1.2 Filter chamber and certifications on the rear of the device
Figure 2-3: Control elements and labelling on the underside of the Mini-LAS 11-R
22
17
19
20
21
23
18
17 Filter chamber with bayonet closure
18 PTFE filter (not marked in the illustration)
19 Laser warning
20 Type plate 11-R
21 Calibration label
22 Sunlight warning label
23 QC label (proof of final inspection)

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2.2 Display
The optical display of the device is an OLED (organic light emitting diode) display with a total of 2 x 16
characters. Measurements and optional sensor values are shown on the display along with all settings
such as the date, time, measuring location number, battery charge level, storage interval and all mes-
sages.
2.3 LED display
2.3.1 Humidity indicator
The humidity indicator with three LEDs above the membrane keyboard signals the current relative hu-
midity of the sample air in the measuring device in three colours:
Figure 2-4: Display of the MiniLAS-11-R
- Up to relative humidity of 49 %: green
- Up to relative humidity of 74 %: yellow
- From relative humidity of 75%: red
Figure 2-5: Humidity indicator