Axetris LGD F200P2 Quick setup guide

Operating & Integration Instructions
Laser Gas Detection
OEM Module
LGD F200P2
Axetris AG

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 2/60
Foreword
Dear customer, we thank you for acquiring an Axetris LGD F200P2 laser gas detection module. Please
read this document carefully and entirely, to properly install and operate your device.
Axetris laser gas detection modules are manufactured with extreme attention and the highest quality
standards to offer you the best performance for full benefit in your application. Should you require any
additional information or require troubleshooting, please contact us for support.
For questions, service and maintenance information please contact:
Europe and Asia
Headquarters
Axetris AG
Company of the Leister Group
Schwarzenbergstrasse 10
6056 Kaegiswil
Switzerland
Phone: [phone]
Fax: [phone]
[email protected]om
www.axetris.com
Americas
Exclusive Distributor
Leister Technologies LLC
1275 Hamilton Parkway
Itasca IL 60143
USA
Toll-Free: +1 844 AXETRIS (844 293 8747)
Fax: [phone]
[e-mail]
www.axetris.com
Japan
Leister Technologies KK
Shinyokohama Bousei Bldg 1F
3-12-20, Shinyokohama, Kohoku-ku
Yokohama 222-0033
Japan
Phone: [phone]
Fax: [phone]
[email protected]p
www.axetris.jp
China
Leister Technologies Ltd.
Building 11, 155 Yuanke Road
Xinzhuang Industry Park
Shanghai 201109
PR China
Phone: [phone]
fax: [phone]
[email protected]n
www.axetris.cn
To find your local representative, please visit https://www.axetris.com/en-ch/sales-and-service/distributor/
Transmission and/or reproduction of this document is not allowed without the written permission from
Axetris AG. The data and information provided in this document is accurate to the best of our knowledge.
This content is subject to change without prior notice.
© Axetris AG

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 3/60
Important safety instructions
Warnung
Vorsicht
Gefahr! Das Gerät nicht öffnen. Laser der Klasse 3R.
Der Sensor ist nur mit einem Druck von 800 – 1100
mbar zu betreiben.
Das System darf nicht in einer explosiven Umgebung
benutzt werden. Keine ATEX Zertifizierung.
Hinweis
Verbrennungsgefahr! Gasanschlüsse und Gehäuse
nicht in heissem Zustand berühren. Gerät abkühlen
lassen.
Reparaturen sind ausschliesslich durch eine
autorisierte Axetris-Service-Stelle ausführen zu
lassen.
Beim Messen von potenzial gefährlichen
Konzentrationen von giftigen Gasen muss der Auslass
des Sensors in einen sicheren Bereich geführt werden.
Sämtliche in der Bedienungsanleitung gegebenen
Informationen und enthaltenen Warnungen sind
einzuhalten.
Warning
Caution
Danger! Do not open the device. Class 3R laser.
The sensor may be used within a pressure range
from 800 to 1100 mbar only.
The system may not be used in a potentially explosive
environment. No ATEX certification.
Note
Risk of burning! Do not touch gas connections or
housing when they are hot. Allow the device to cool
down.
Repairs shall be assigned exclusively to an
authorized Axetris service point.
When potentially hazardous concentrations of toxic
gases are measured, the sensor outlet must be
transferred to a safe area.
All information and warnings set out in the Operating
Manual must be observed.
Avertissement
Prudence
Danger ! Ne pas ouvrir l’appareil. Laser de classe 3R.
Le capteur doit uniquement être utilisé à une
pression comprise entre 800 et 1 100 mbar.
Le système ne doit pas être utilisé dans une
atmosphère explosive. Pas de certification ATEX.
Remarque
Risque de brûlure ! Ne pas toucher les raccords de gaz
ni le boîtier lorsqu’ils sont chauds. Laisser refroidir
l’appareil.
Les réparations doivent exclusivement être
effectuées par un centre de service Axetris agréé.
Lors de la mesure de concentrations potentiellement
dangereuses de gaz toxiques, la sortie du capteur doit
être guidée vers une zone sûre.
L’ensemble des informations et avertissements
fournis dans la notice d’utilisation doivent être pris
en compte.

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 4/60
Advertencia
Precaución
Peligro No abrir el equipo. Láser de la clase 3R.
El sensor solo debe operarse con una presión de
800 – 1100 mbar.
No se debe utilizar el sistema en un ambiente
potencialmente explosivo. Sin certificación ATEX.
Indicación
Peligro de quemaduras. No toque las conexiones de
gas ni la carcasa si están calientes. Dejar que el equipo
se enfríe.
Solo los puntos de servicio técnico Axetris están
autorizados a realizar reparaciones en el dispositivo.
Durante la medición de concentraciones potencialmente
peligrosas de gases tóxicos debe colocarse la salida del
sensor en una zona segura.
Deben respetarse todas las advertencias y la
información incluidas en el manual de instrucciones.
Avvertenza
Attenzione
Pericolo! Non aprire l'apparecchio. Laser della categoria
3R.
Far funzionare il sensore soltanto con una pressione
di 800 – 1100 mbar.
Il sistema non può essere utilizzato in un ambiente
esplosivo. Nessuna certificazione ATEX.
Nota
Pericolo di scottature! Non toccare gli attacchi del gas e
l’alloggiamento quando sono roventi. Fare raffreddare
l’apparecchio.
Le riparazioni devono essere eseguite
esclusivamente da un centro di assistenza
autorizzato Axetris.
Nella misurazione delle concentrazioni potenzialmente
pericolose di gas tossici, lo scarico del sensore deve
essere guidato in un ambiente sicuro.
Vanno osservate tutte le informazioni e tutti gli
avvertimenti contenuti nelle istruzioni per l'uso.
警告 小心
危险！不可打开设备。激光级别 3R。 只可以 800 – 1100 mbar 的压力来运行传感器。
不允许在可引起爆炸的环境中使用此系统。无 ATEX 认
证。
提示
灼伤危险！不要接触热的气体接口和外壳。冷却设备。 仅可由授权的 Axetris 服务部门进行维修。
在测量有毒气体的潜在危险浓度时，必须将传感器的出
口引至安全的区域。
必须遵守在操作说明书中给出的所有信息和警告。

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 5/60
警告 注意
危険！デバイスを開けないでください。クラス3Rのレ
ーザー。
センサーは800～1100 mbarの圧力でのみ動作しま
す。
システムは、爆発性のある環境で使用することはでき
ません。ATEX認定はありません。
注記
ヤケドの危険があります！高温状態において、ガス接
続部およびハウジングに触れないでください。熱風融
着機をクールダウンさせます。
認定されたAxetrisサービスセンターのみが修理を実
施することができます。
有毒ガスの潜在的に危険な濃度を測定する場合、安全
な場所においてセンサーを差し込む必要があります。
取扱説明書で提供されているすべての情報および警
告情報に従う必要があります。
경고 주의
위험! 장치를 개방하지 마십시오. 3R 등급의 레이저.
센서는 반드시 800 – 1100 mbar의 압력으로
가동해야 합니다.
본 시스템은 폭발 환경에서 사용하지 말아야 합니다.
ATEX 인증 안됨.
주의사항
화상위험! 가스 연결부 및 하우징은 가열된 상태에서
접촉하지 마십시오. 이런 경우 장치를 냉각시키십시오.
수리는 반드시 인증된 Axetris 서비스 대리점을 통해
실시해야 합니다.
잠재적 위험이 있는 유독 가스 농도를 측정하는 경우,
센서의 출구가 안전한 영역에 위치해야 합니다.
사용설명서에 명시된 모든 정보 및 여기에 포함된
경고 사항의 내용을 준수해야 합니다.

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 6/60
About this manual
This manual is the original and legally correct version.
The aim of this manual is to provide the user all the necessary information to install, operate and
maintain LGD F200P2 Series Products.
This manual must be read by all individuals that will be using or servicing this device. System
maintenance and service needs to be performed by qualified and Axetris AG approved personnel
only. The appropriate handling of the product is required for trouble-free operation. This product is
a high-precision measurement device. Careful installation and handling is necessary to achieve
and maintain the specified measurement precision. Correct set-up and operation of the instrument
will allow you to use it safely and to obtain reliable measurement results.
Any warranties regarding this product, and as mentioned in the General Terms and Conditions of
Axetris AG, are void in the event the system is altered or damaged by the user, not installed, used
and serviced according to this document.
Important notes in the text:
Throughout the text, warning and information notes in red, as shown below, inform the user about
crucial points to observe. These warnings and informational notes must be followed scrupulously
and Axetris AG takes no responsibility for any personal injury, death or any damage to equipment
or property resulting from not observing these indications.
The warning sign indicates that severe personal injury/death and/or property damage might
result from not observing safety instructions.
 The information sign points to particularly important information and instructions.

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 7/60
CAUTION
 Product damage
 Read all instructions carefully before using the device.
 The LGD F200P2 gas sensor modules are not designed to sense liquid flow and damage will
result if liquid is passed through the sensor.
 Gas loaded with particles will eventually contaminate the optics and affect the performance of the
sensor. Please consult our TCS (Technical Customer Support) accordingly.
 Do not use direct insulation around the heated version. This leads to overheating of the sensor.
 The appliance must not be used in damp or moist surroundings.
 Only use accessories indicated in the instructions for use or which are recommended by
the manufacturer.
 Failure to comply with these instructions can result in product damage.
Danger to life
 The heated version of the sensor modules (indicated by an H) employs a heated element.
 The temperature of the heated element is above the ambient temperature. The sensor must not
be used with flammable or explosive gases or mixtures.
 Unprofessional gas handling can cause injury or death. The use of the gas sensor modules should
only be performed by qualified personnel.
 Do not use this product as a safety or emergency stop device or in any other application where
failure of the product could result in personal injury or death.
 IF THE LGD F200P2 IS PROVIDED WITH GAS OUTSIDE THE OPERATING RANGE
(TEMPERATURE AND PRESSURE) THERE IS NO WARNING THAT THE LGD F200P2 IS NOT
WORKING PROPERLY!
 IF THE TEMPERATURE OF THE GAS PROVIDED IS HIGHER THAN THE CELL, A HIGH RISK
OF CONDENSATION AND IRREVERSIBLE DAMAGE OF THE CELL EXISTS.
 DO NOT OPEN THE LGD F200P2 MEASUREMENT HEAD: LASER CLASS 1 INSIDE.
DO NOT USE THE SYSTEM IN AN EXPLOSIVE ATMOSPHERE: NOT ATEX CERTIFIED.
DO NOT USE WITH EXPLOSIVE GAS MATRIX: NOT ATEX CERTIFIED.
LASER RADIATION – DO NOT VIEW DIRECTLY WITH OPTICAL
INSTRUMENTS - CLASS 1 LASER PRODUCT
Peak Power 2.5 mW - Wavelength: 1500 - 2000 nm

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 8/60
Index
1 GENERAL USER INFORMATION ...................................................................................................... 10
1.1 LGD F200P2 introduction ............................................................................................................ 10
1.2 Technical Data ............................................................................................................................. 11
Environmental conditions..................................................................................................... 11
Mechanical characteristics................................................................................................... 11
Electrical characteristics ...................................................................................................... 12
1.3 Delivery check ............................................................................................................................. 12
1.4 Identifying the unit ........................................................................................................................ 12
2 SYSTEM SET-UP FOR EVALUATION ............................................................................................... 12
2.1 Operation conditions, storage & transport ................................................................................... 12
2.2 System layout and materials ....................................................................................................... 13
2.3 Interfacing for evaluation ............................................................................................................. 14
2.4 Setting up for lab evaluation ........................................................................................................ 14
2.5 Additional set-up for measurements of hot gases (H-version) .................................................... 15
2.6 Gas conditioning and filtering information ................................................................................... 17
2.7 Calibration / calibration verification / offset and span: ................................................................. 19
2.8 Zeroing and Purging .................................................................................................................... 19
2.9 If air is used for the zeroing make sure your device is not measuring CO2 as air may contain few
hundreds ppm of CO2 that will give a wrong value for the offset.Housing purge (optional) .................... 19
2.10 Gas supply ................................................................................................................................... 20
2.11 Measurement range and precision .............................................................................................. 20
2.12 Measurement software and interfacing ....................................................................................... 21
Installing the measurement software ................................................................................... 21
Starting the measurement software ..................................................................................... 21
Data acquisition & saving measurement data to a file ........................................................ 22
Status and error codes ........................................................................................................ 23
Sensor parameters .............................................................................................................. 23
2.12.5.1 Calibration adjustment ................................................................................................. 23
2.12.5.2 Analog output adjustment ............................................................................................ 24
2.12.5.3 Adjusting firmware integration time (T90) .................................................................... 25
2.12.5.4 Diagnostic mode switch ............................................................................................... 25
2.12.5.5 Laboratory mode switch ............................................................................................... 25
2.12.5.6 Analog_switch .............................................................................................................. 25
Cursor function .................................................................................................................... 26
2.13 Relay alarm definition .................................................................................................................. 27
2.14 Data logger software.................................................................................................................... 28
2.15 Attaching multiple devices to a single computer ......................................................................... 29
3 INSTRUCTIONS FOR LGD SYSTEM INTEGRATION ....................................................................... 30
3.1 Mechanical mounting of the unit .................................................................................................. 30

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 9/60
3.2 Thermal Management of the LGD Analyzer Module ................................................................... 31
3.3 Thermal Management of the LGD Analyzer Module @220°C .................................................... 32
3.4 Interfacing for integration ............................................................................................................. 33
Interfacing and connectors .................................................................................................. 33
Load limitation for the analog interface:............................................................................... 34
Setting the alarms ................................................................................................................ 34
3.5 Data transmission protocol .......................................................................................................... 35
RS232 Serial settings .......................................................................................................... 35
Overall communication structure ......................................................................................... 35
Timing & RS232-protocol..................................................................................................... 37
3.6 Measurement data format ........................................................................................................... 38
3.7 Change of user parameters ......................................................................................................... 39
3.8 Commands .................................................................................................................................. 39
Version ................................................................................................................................. 39
Stop measurement (Idle) ..................................................................................................... 40
Ping user data ...................................................................................................................... 40
Configure user data ............................................................................................................. 42
Save to EEPROM ................................................................................................................ 43
Starting measurements........................................................................................................ 43
3.9 Status, error and failure response ............................................................................................... 43
4 MAINTENANCE AND TROUBLE SHOOTING ................................................................................... 45
4.1 Maintenance ................................................................................................................................ 45
4.2 Troubleshooting ........................................................................................................................... 46
5 IMPORTANT DISCLAIMER / NOTICE ................................................................................................ 47
6 FCC Statement .................................................................................................................................... 47
ANNEX ........................................................................................................................................................ 48
A. Status, Warning and Error Code Listing for Evaluation ....................................................................... 48
B. Status, Warning and Error Code Listing for Integrators/OEMs ........................................................... 49
C. Examples for Analog Output Adjustments ........................................................................................... 50
D. Mechanical Dimensions ....................................................................................................................... 52
i. LGD F200P2 mechanical dimensions, ambient version (A) ........................................................ 52
ii. LGD F200P2 mechanical dimensions, heated version (H) ......................................................... 54

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 10/60
1 GENERAL USER INFORMATION
1.1 LGD F200P2 introduction
Axetris’ laser gas detector (LGD), “LGD F200P2,” is a system for the continuous monitoring of gases such
as NH3 and (H2O), HCl and (H2O), CH4 or CO2. Based on state-of-the-art Tunable Diode Laser
Spectrometry (TDLS), the system has a very high selectivity to the target gas and features an innovative,
patented measurement principle without the need for a physical reference channel. The system is based
on a flow-through cell for extractive gas measurements and exists in two versions:
i) A-version: For the measurement of gases at ambient (A) temperature (pictured on right in Figure 1).
ii) H-version: For hot-gas measurements (H) typically at 190°C, slightly bigger due to heater & insulation
(pictured on left in Figure1).
Typically one system monitors one gas. Concentration
ranges are customer-specific and can cover 0-10 ppm just
as well as 0-100 percent, depending on the gas and
measurement conditions.
Calibration is factory set according to customer application
requirements—generally re-calibration is not necessary
except in cases where the customer application conditions
differ significantly from the feasible factory calibration
conditions. Offset and span adjustments can be performed
on a maintenance basis and might be necessary due to
systematic differences in calibration and gas delivery
equipment. This can be done via the Graphic User
Interface (GUI) provided with the system software.
Figure 1 LGD F200P2, ambient (A)
version (right), and heated version (H) for
hot-gas measurements (left)

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 11/60
1.2 Technical Data
Environmental conditions
Parameter Unit Value / Range
Usage - Interior use
Maximum operating
temperature range
C
F
15 …50 (H), -30 … 65 (A) (except CH4(A): -10 …65)
59 …122 (H), -22 … 149 (A) (except CH4(A): 14 …149)
Operating humidity % r.H. 0 … 99, non-condensing
Operating pressure mbar 800 … 1’100
Storage temperature C
F
-40 … 80
-40 … 176
Storage humidity % r.H. 0 … 99, non-condensing
Emission level Lpa * dB <70
*specification for CE conformity
Mechanical characteristics
Parameter Unit Value / Range
Measurement cell - Flow-through setup
Standard cell length mm
inches
200
7.9
Std. optical path length mm
inches
400
15.7
Standard cell volume mL 15
Maximum measurement gas
flow rate (Minimum)
mL /
min
5’000 (1’000)
Dimensions housing mm3 380 x 122 x 78 (heated version)
340 x 107 x 78 (ambient version)
Approx. weight kg 3.3 (heated version)
1.9 (ambient version)
Inlet / outlet connectors,
measurement gas
mm 6 O.D., Swagelok
Inlet / outlet connectors, purge
gas (optional)
mm 6 O.D., push-in fitting (optional accessory)

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 12/60
Electrical characteristics
Parameter Unit Value / Range
Voltage supply DC
Min. / Max. rating V 10 … 30 (max. ripple ± 100mV, max. current 0.5A, DC
inrush current limitation 1A, reverse battery protection
System power consumption. W < 2
Max. cell heating power
consumption, (H) version
W 100
Start-up time s 30
Warm-up time
Cell heating starting at 25°C
Stable operation after
min
min
30min for 190°C (374F) / 40min for 220°C / 428F
60 (at 190°C / 374F and 220°C / 428F cell temperature)
Further technical data and version specific information can be found in the relevant product data sheets.
1.3 Delivery check
Please control the package upon reception and check for any damage incurred during shipment. Contact
the sales person in case the parcel is damaged.
1.4 Identifying the unit
The identification sticker is placed on the electronics box and contains the following information:
 System type & optional naming
 Target gas(es) and upper range(s)
 Gas temperature & pressure, as
calibrated
 External temp. range foreseen
 Gas flow in liters/min as calibrated
 Serial number (SN)
 Article number
 Configuration ID
 Interfaces implemented
Figure 2 Identification plate
2 SYSTEM SET-UP FOR EVALUATION
2.1 Operation conditions, storage & transport
The instrument must be used within the specified ambient conditions and temperature range. Depending
on information provided by the customer, the factory calibration temperature range might cover a more
narrow range adapted to the application and reducing the complexity of the calibration. Please find
conditions for operation and storage in Table 1.
Dust or condensing water in the measurement cell leads to signal reduction of the sensor. It is therefore
crucial to ensure that the measurement gas flow is free of dust and that condensation cannot occur:

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 13/60
The systems are not designed for use in an explosive atmosphere.
 Irreversible system damage might occur if the use of adequate and application-specific gas
filtration technology is omitted. This is an optical measurement system. For further
information on gas conditioning and filtering please refer to Chapter 2.6.
 Relative humidity in the measurement gas and measurement conditions must be such that
no condensation occurs inside the measurement cell.
 Each sensing module is calibrated to a certain gas temperature and pressure. Deviations in
both parameters can lead to significant degrading of measurement accuracy.
The LGD F200P2 instrument continuously measures the gas concentration in the measurement cell.
Default measurement time is roughly 1 s (user changeable to up to 600 s integration time or “averaging”).
The ambient version has a start-up time of 30 s to give a correct concentration reading. The warm-up time
for the heated version depends on the set-temperature and ambient conditions. For a measurement set-
temperature of 190°C / 374F, about 30 min are needed (40 min for 220°C / 428F option). Depending on
ambient conditions, it may take longer until all components have reached a stable temperature.
Table 1 Operation & storage conditions
Parameter Specification
Area of use In-door use
Maximum operation temperature range -30°C (-10°C) to 65°C for the ambient version
15°C to 50°C for the heated version
Pressure range measurement gas 800 to 1100 mbar
Operation humidity 0 … 99 % non-condensing
Maximum flow rate measurement gas 5 liters per minute
Minimum flow rate measurement gas 1 liter per minute
Maximum flow rate purge gas (optional) 2 liters per minute
Minimum flow rate purge gas (optional) Depending on application conditions
Storage temperature -40°C to 80°C (-40F to 176F)
Storage humidity 0 – 99 % non-condensing
For any shipments of the system, it is recommended to retain and re-use the original shipment material,
which has been tested and proven to be effective protection. Relevant Operation & Storage conditions as
described above as well as in the Product Datasheet need to be respected for shipment. In case of a
return, Axetris AG will not be responsible for shipping damage as a result of improperly packaged systems
and recommends customers ship systems insured for full value.
2.2 System layout and materials
Do not open the system. Opening might lead to irreversible damage.
Do not remove the fittings of the measurement cell.
Prevent any dust, insulation or other material from entering the measurement cell.
The main external features of the LGD F200P2 are the housing, the electronics housing, and the gas-in
and gas-out connectors. On the inside, the system is equipped with an electro-optic module containing a
laser and photo-diode, a measurement cell, and a high reflectivity mirror. The laser beam traverses the
measurement cell from the electro-optic module to the mirror and then goes back through the
measurement cell to the photo-diode. Small air spaces are necessary for thermally decoupling the electro-
optic module and the mirror from the measurement cell that can optionally be heated as high as 220°C /

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 14/60
428F. For certain applications it is therefore necessary to purge the housing with compressed air or
nitrogen. Please see Ch. 2.8 for more details.
During normal operation, the measurement cell is the only component that comes into contact with the
measurement gas. The wetted materials are inert: stainless steel, Teflon and glass, (please also refer to
TN_LGD_Wetted Materials).
2.3 Interfacing for evaluation
The standard LGD interface is a RS232 connection. Connection to a USB port is possible via an
RS232/USB adapter supplied with the system.
Analog 4-20 mA or 0-5 V interfaces will be factory calibrated upon customer request. Please see chapter
3.4.2 for the load limitation of the 4-20 mA interfaces.
Table 2 Interface Listing
Version
Type Comment
Digital RS 232 Standard; to be used with the delivered measurement software for
evaluation (see Chapter 2.12), or with the protocol for integration purposes
(see Chapter 3.5).
USB Via supplied RS232 adapter
Analog 4 - 20 mA Standard
0 - 5 V On request
 To connect the system via a USB port, please only use our tested RS232/USB adapter that is
provided with the system.
 Please avoid starting-up or restarting a computer when the LGD is connected to the serial
interface or through a USB port. Switching on the computer with an operating LGD device
can lead to the fact that Windows may identify the device as a serial mouse, and the LGD
cannot connect from the interfacing software.
2.4 Setting up for lab evaluation
Position the LGD F200P2 module at the location where the measurement will be carried out and where
computer, power supplies and gas delivery systems can be installed. For customer support and system
service it is ideal if the computer also can be connected to the internet.
To allow simplified connectivity for evaluation, a cable integrating both, system power supply and RS232
are provided (straight RS232 version, not crossed). The DB15 plug on the right-hand side in Figure 3
connects to the instrument as shown in Figure 4, while the DB9 connector on the left-hand side in Figure
3 connects to the computer.
Figure 3 Combined power supply and RS232 cable. For Figure 4 Combined power supply and

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 15/60
integration purposes the connectors can be opened for
OEM specific wiring
RS232 cable plugged into the LGD
F200P2
 First, plug the DB15 connector into the instrument prior to connecting the RS232 and the
power supply.
Plugging the AC/DC adapter into a 100–240 VAC source turns on the LGD F200P2 (in case another
power supply and RS232 cable are used, please keep in mind that it is important that the RS232 cable is
a straight one and not the cross-over version. The cable length should not exceed eight meters at a baud-
rate of 9,600).
In order to connect the gas-in and gas-out lines, remove the white plastic caps on the measurement cell
that serve as dust-protection only (Figure 5). The caps also have to be removed before connecting the
heating power supply of the H-version as they are not made for high-temperature operation. Gas-in and
gas-out connectors of the measurement cell are Swagelok 6 mm O.D. For correct mounting please see
the schematic in Figure 6.
In case the optional housing purge needs to be used, mount the purge connectors (6 mm O.D. push-in
fittings; included with the shipment) and connect the purge gas lines (see also Chapter 2.8).
Figure 5 Plastic cap on
cell connectors to protect
against dust inside the
measurement cell
Figure 6 Swagelok gas-in and gas-out
connectors (Part No.: SS-6M0-1-2RS).
Further mounting instructions can be found at
www.swagelok.com
Figure 7 Heated gas-in
line connected to the
LGD F200P2
2.5 Additional set-up for measurements of hot gases (H-version)
The heated version of the LGD operates with two heating elements at 12V/4A each to allow reaching a
flow-through measurement cell temperature of 220°C / 428F. Therefore a separate power supply for
cell heating has to be connected. For the LGD Evaluation Kit, a power supply is included that delivers
the necessary 12Vcc/8A for both heating elements as shown in Figure 8. For integration purposes, the
provided cable connector, as shown in Figure 9, is connected to the device (Figure 10) and allows the
connection of a single 12Vcc/8A power supply or two 12Vcc/4A power supplies, each by connecting the
red and white cables to 12V/4A and the brown & yellow cables to ground (GND). Figure 11 shows the
screw terminal connector of the electronics housing and Table 3 gives the connector assignment. The
Heater Power Supply must be well connected to PE (protective earth) for proper operation.
Before starting heating, the plastic connector (see Figure 5) has to be removed. The material
will not resist the cell temperature of 220°C / 428°F and will damage the gas connector.
Do not touch the gas connectors – they have the temperature of the measurement cell and
could be as hot as 220°C / 428°F. This is indicated by the following sign next to the
connectors:
Do not touch the surface of the system in heating mode. It might be, in extreme cases, (50°C
/ 122°F ambient temperature) as hot as about 80°C /176°F.
Do not directly insulate the unit. This might lead to irreversible system damage (see Ch. 3.2).

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 16/60
Figure 8 LGD (H)
Evaluation Kit heater
power supply
Figure 9 Cable connector for the two
flow-through cell heaters
Figure 10 Heating element cable
connector plugged to the LGD
Figure 11 Cell heater screw terminal
connector assignment.
Head view electronics housing.
Table 3 Connector assignment for cell heating elements (H-version only):
Pin Name Description Cable colour
1 PGND Power ground (PGND is internally isolated from
GND IN and GND)
Brown
2 12VP1 Power supply 12V. Consumption: < 48W (max
ripple 120mVpp)
Red
3 PGND Power ground (PGND is internally isolated from
GND IN and GND)
Yellow
4 12VP1 Power supply 12V. Consumption: < 48W (max
ripple 120mVpp)
White
If the temperature of the incoming measurement gas has a temperature higher than the
cell, there exists a high risk of condensation and irreversible damage to the cell.
 For proper measurement results, the temperature of the incoming gas needs to be
close to the measurement cell temperature (± 5°C / 41°F).
Figure 12 displays a schematic setup for a NH3 hot-gas evaluation measurement. In order to make
accurate measurements of hot gases, we recommend the use of industry-standard heated gas-lines (see
Figure 7) to provide a sample gas with a well-defined temperature. Incoming sample gas needs to be at
the same temperature as the measurement cell (± 5°C / 41°F). For ammonia measurements 190°C /
374°F are recommended (or 220°C / 428°F for gas containing high SO2)
Carrier gas can be a bottle of compressed air. Humidity can be enhanced by guiding the stream through a
bubbler. The carrier gas and the target gas (bottled ammonia is available in different concentrations) can
be mixed using mass flow controllers (MFC). The sample gas is then guided to the sensor by using a
heated and temperature stabilized hose. The length of the hose needs to be chosen according to the set
gas flow in order to allow sufficient heating of the gas. Adjusting the gas temperature to the same
temperature as the sensor temperature (i.e. the temperature for which the sensor was calibrated) is
important in order to obtain accurate results. This is best controlled by a temperature sensor in the gas
flow prior to the measurement cell.

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 17/60
Figure 12 Schematic of a simple test setup for hot-gas ammonia measurements
 Guiding the ready mixed sample gas flow through a humidifier can lead to a significant wash
out of the ammonia. Place the humidifier into the nitrogen stream only.
 The temperature displayed in the LGD Graphic User Interface (GUI) indicates the
measurement cell temperature, NOT the gas temperature.
 The sensor is calibrated to a certain pressure in the 800 – 1100 mbar interval. Deviations
from this calibration pressure within the interval can lead to measurement errors of up to 20
percent, dependent on gas matrix and temperature.
 In order to obtain the best possible performance concerning response time we recommend a
flow rate of 3 l/min through the sensor. Significantly larger flows than 5 l/min can lead to
turbulences and degradation of measurement precision. Smaller flows do not lead to errors
or misreadings, but simply increase the response time.
Each heater power supply must be limited to 12 Vcc max or 4 A max. Higher values can lead
to destruction of the sensor (or to 12 Vcc/8A in case only one supply is used).
The LGD F200P2 cell (heated version) is protected with an internal safety switch which shuts
off the heating elements if the cell temperature exceeds 250°C / 482°F.
2.6 Gas conditioning and filtering information
The LGD F200P2 Gas Sensor Modules are based on an optical measurement technique where
performance is directly linked to optical transmission through the measurement cell. Sample gas
containing particles and aerosols are likely to contaminate the optical windows of the measurement cell
and degrade the optical transmission more or less quickly. Contamination strongly depends on particle
size, material, charging effects, etc. which can vary considerably across different applications. It is
therefore generally very difficult to give a precise specification concerning the purity of the gas in order to
avoid contamination on a reasonable time scale.
Filtration setups can be as simple as a PTFE in-line syringe filter in environmental applications, or as
complicated as three-stage filtering solutions of exhaust gas in high dust-load and high SO2 emission
control applications. According to different companies providing filter technology for analytical instruments
used in exhaust gas sensing, proper filtering can solve the problem of contamination completely.
However, filtering needs to be application-specific and hence we advise our customers to get in touch with
experts in that field (list of references available upon request).
Hot-gas filter solutions offer a wide variety of different gas treatment technologies including filters in
different sizes and qualities. Typically, up to three filter stages are used with a high efficiency of particles
as low as 0.1 μm (sinter ceramic filters, sinter metal filters, quartz glass wool and quartz glass fiber filters,
etc). When discussing the appropriate filter technology with these companies, great care also should be
taken that the used filter technology does not alter the measurement outcome.
In case of hot sample gases, it is important that the filters are heated as well in order to avoid
condensation and the creation of droplets in the gas stream. In addition, aerosols in the sensor module
can be avoided by an adequate filter, at the inlet of the sensor in particular, when pressure reducers are
used up-stream. When a significant amount of humidity is in the sample gas, it also is important that the

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 18/60
temperature of the sample gas is equal to or lower than the temperature of the measurement cell in order
to avoid condensation.

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 19/60
2.7 Calibration / calibration verification / offset and span:
The calibration is factory set. When the sensor module is used in conditions defined for calibration there
is no need for re-calibration. However, an additional off-set and span can be added, for instance, in
order to compensate for systematic errors in gas delivery and calibration equipment, or when the sensor
is operated at a different temperature. See Chapter 2.12.5.1 for the software adjustment.
 If re-calibration or calibration verification
is desired, proceed as follows:
The sensor is designed and calibrated for
measurements of a target gas in N2 with
residual humidity content.
Before executing offset and span calibration
or verification, ensure the gas measurement
is stable.
Allow for sufficient time for the instrument to
de-gas before fixing the 0-concentration and
span calibration. See Ch. 2.12.5.1 for further
instructions.
First, carry out the offset and follow with the
span correction procedure. To verify the
calibration, the procedure can be repeated.
 For NH3 systems, verification and re-
calibration of the 0-point ideally is
carried out with ambient air where a
residual humidity of 1 % or higher is
present. If necessary the 0-point
calibration can be carried out with
nitrogen.
Figure 13 Schematic representation of offset
and span-adjust for calibration correction
2.8 Zeroing and Purging
Before starting a measurement it’s generally recommended to perform a zeroing (without target gas in
flow) and adjust the offset value accordingly. This operation is to adapt the reading of device to the actual
operation conditions (Pressure, Temperature, Humidity …)
2.9 If air is used for the zeroing make sure your device is not measuring CO2 as
air may contain few hundreds ppm of CO2 that will give a wrong value for the
offset.Housing purge (optional)
The LGD F200P2 housing is dust-tight but not gas tight. For thermal decoupling reasons, an air space
exists between the electro-optic elements and the measurement cell. Under very unfavorable conditions
the gas present in this space might contribute to the measurement signal. This is the case when the target
gas also is present in the ambient air at significant concentrations relative to the target gas concentration
to be measured (e.g. CO2). In this case, the housing needs to be purged with purge-gas free of these
gases (e.g. N2 or compressed air). However, most applications do not require a housing purge and the
connectors are closed with a screw (see Figure 14). If the housing purge needs to be used, remove the
screws and install the connectors supplied with the instrument (see Figure 15). The housing purge
connector is closed with a black plug to prevent dust from entering the system. To remove the black plug,
pull it while pressing down on the blue rim at the same time.

Axetris AG LGD F200P2 Operating Instructions - Rev D 19.09.2018 20/60
Purge gas must be filtered with a 1 μm in-line filter (e.g. syringe filter PTFE) and must be
oil-free. Otherwise contamination of internal optical components might occur leading to
sensor malfunctioning.
 Purge gas flow is recommended to be 1-2 l/min
 There might be a significant difference between the in-flow of the purge and the flow
measured at the outlet, particularly for the heated LGD version. The insulation, various
feed-through, and the fact that the housing is not designed to be gas-tight lead to
this difference.
Purging needs to be considered in case:
1. The target gas for measurement is present in the ambient air in significant concentrations.
2. Corrosive gases are present in the environment.
3. Condensation due to humidity and temperature changes can occur inside.
4. The gas matrix contains potentially dangerous mixtures. Purging can add additional safety in
case of cell leakage.
5. If the housing has been “contaminated” with the target gas and desorption takes place, the
sensor might not be able to reach a reading of 0 ppm anymore. To purge the system, flow N2 or
air through the “Housing purge” until normal behaviour of the sensor is reached (0-reading).
This device is not certified for
the use with potentially
explosive gas mixtures.
Use an in-line filter to remove
dust in the purge gas
Figure 14 Housing purge
outlet, closed with a screw
(standard)
Figure 15 Housing purge
connector installed
2.10 Gas supply
The piping system surrounding the sensor is important. Leaks in the piping system can falsify the results.
It is therefore recommended to carefully check the system for leaks. The use of correct fittings and sealing
helps to avoid leaks. Use standard pressure reduction equipment on gas bottles. Maximum standard flow
is 5 l/min. The minimum should be 1 l/min in most applications.
When measuring potentially dangerous concentrations of toxic gases (NH3, HCl, HF, etc.),
properly vent the exhaust of the sensor to a safe area. Improper venting of the exhaust may
cause serious personal injury
2.11 Measurement range and precision
Detailed specifications of each device are customer-, application- and gas-specific. Please refer to the
respective LGD F200P2 data sheets.