User Manual - Automatikprodukter
Contents
1. 7 4 Table Overview of Gases Data Gas HFC Sensor Group Measuring Calibration Relative type HCFC type range Gas m Volt MV density air 1 R 22 TGS 830 HCFC 2000 ppm R22 1000 1667 gt air R 401a TGS 830 HCFC 2000 ppm R22 1000 1667 gt air R 401b TGS 830 HCFC 2000 ppm R22 1000 1667 gt air R 401c TGS 830 HCFC 2000 ppm R22 1000 1667 R 402a TGS 830 HCFC 2000 ppm R22 1000 1667 gt air R 402b TGS 830 HCFC 2000 ppm R22 1000 1667 gt air R 403a TGS 830 HCFC 2000 ppm R22 1000 1667 R 403b TGS 830 HCFC 2000 ppm R22 1000 1667 R 405a TGS 830 HCFC 2000 ppm R22 1000 1667 R 406a TGS 830 HCFC 2000 ppm R22 1000 1667 R 408a TGS 830 HCFC 2000 ppm R22 1000 1667 gt air R 409a TGS 830 HCFC 2000 ppm R22 1000 1667 gt air R 409b TGS 830 HCFC 2000 ppm R22 1000 1667 gt air R 411a TGS 830 HCFC 2000 ppm R22 1000 1667 gt air R 411b TGS 830 HCFC 2000 ppm R22 1000 1667 gt air R 412a TGS 830 HCFC 2000 ppm R22 1000 1667 gt air R 509a TGS 830 HCFC 2000 ppm R22 1000 1667 R 134a SP42A HFC 300 ppm R134a 100 1665 SCH TGS 832 HFC 2000 ppm R134a 1000 3165 R 404a SP42A HFC 300 ppm R134a 100 1665 3 45 TGS 832 HFC 2000 ppm R134a 1000 3165 R407a SP42A HFC 300 ppm R134a 100 1665 TGS 832 HFC 2000 ppm R134a 1000 3165 R407b SP42A HFC 300 ppm R134a 100 1665 TGS 832 HFC 2000 ppm R134a 1000 3165 R407c SP42A HFC 300 ppm R12. Jumper 0 20 Jumper V A Output signal Not set Not set Set Not set Not set Set Set Calibration adapter Fig 6 Type Calibr set Set Automatikprodukter i Askim Gasmossen 43 SE 436 39 ASKIM Sweden Tfn 46 0 31 28 72 02 Fax 46 0 31 68 34 36 ID Automatikprodukter 9 Notes and General Information It is important to read this user manual thoroughly and clearly in order to understand the information and instructions The AP transmitters must be used within product specification capabilities The appropriate operating and maintenance instructions and recommendations must be followed Due to on going product development AP reserves the right to change specifications without notice The information contained herein is based upon data considered to be accurate However no guarantee is expressed or implied regarding the accuracy of this data 9 1 Intended Product Application The AP transmitters are designed and manufactured for control applications and air quality compliance in commercial buildings and manufacturing plants i e detection and automatic exhaust fan control for automotive maintenance facilities enclosed parking garages engine repair shops warehouses with forklifts fire stations tunnels etc 9 2 Installers Responsibilities It is the installer s responsibility to ensure that all AP transmitters are installed in compliance with all national and local codes an
3. Semi conductor sensor Measuring range 20 300 20 2000 ppm Repeatability 20 Response time too lt 40 sec Oxygen concentration 21 standard 18 minimum level Life expectancy gt 5 years normal operating environment Temperature range Humidity 10 C to 50 C 14 F to 122 F 5 95 RH non condensing Pressure range Atmosphere 10 Storage temperature range 0 C to 50 C 32 F to 122 F Storage time Mounting height Electrical Power supply Max 12 months Depending on gas type 16 28 VDC AC reverse polarity protected Power consumption without options Analog output signal Selectable Current tension Starting point 0 20 Serial interface Transceiver 40 mA max 1 00 VA Output signal 0 4 20 mA load lt 500 Q 0 2 10 V load 50 k Q proportional overload and short circuit proof RS 485 19200 Baud Protocol depending on version Physical Enclosure AP DTO05 or MOD Bus Stainless steel V2A Enclosure colour Natural brushed Dimensions H x W x D 113 x 135 x 45 mm 5 35 x 4 5 x 1 8 in Weight Approx 0 5 kg 1 1 Ibs Protection class IP 55 Mounting Wall mounting pillar mounting Cable entry Standard 1 x M 20 Wire connection Screw type terminal min 0 25 to 2 5 mm 24 to 14 AWG Wire distance Current signal ca 500 m 1500 ft Vo
4. 10Vdc accuracy 1 e A small screwdriver e Calibration tool GCD 05 STL only for calibration with service tool GCD 05 e GCD 05 EasyConf configuration and calibration software incl USB RS 485 communication set only for software calibration mode Test gas R 22 or R134a depending on the used sensor see table Overview Gases Data Note Attention Refrigerant calibration gas is toxic never inhale the gas Symptoms Dizziness headache and nausea Procedure if exposed Take the victim into fresh air at once call a doctor Prior to calibration the sensor element must be fully stabilized by applying power voltage for at least 8 days without interruption Please observe proper handling procedures for test gas bottles regulations TRGS 220 Automatikprodukter i Askim Tfn 46 0 31 28 72 02 Gasmossen 43 Fax 46 0 31 68 34 36 SE 436 39 ASKIM Sweden ID Automatikprodukter 5 1 Calibration Depending on the version and the control mode there are three different possibilities to calibrate the transmitter Manual calibration Manual calibration is only possible if the transmitter is equipped with the push button Zero and the potentiometer Gain version for manual calibration Manual calibration is possible both in analog mode and in GCD 05 Bus mode In the GCD 05 Bus mode the jumper V A has to be set before manual calibration Only by doing so the control voltage is available at the test pins X6 Remove the jumper
5. after calibration Calibration with the Service Tool CGD 05 In the standard version equipped with the communication connector X12 the transmitter is delivered for tool and or software calibration Software calibration via PC with Software CGD05 EasyConf In the standard version equipped with the communication connector X12 calibration can also be done by means of the configuration and calibration software CGD05_EasyConf Software calibration is possible for both control modes 5 2 Manual Calibration 5 2 1 Zero point The zero point calibration of the sensor is not necessary because the zero point of the output signal has already been factory calibrated 5 2 2 Gain e Connect digital voltmeter to pin Bridge and ground X4 pin 2 See fig 3 e Connect calibration adapter carefully to the sensor element e Apply calibration test gas 100 ppm or 1000 ppm 300 ml min 1 Bar 14 5 psi 10 e Wait three minutes until the value is stable adjust bridge voltage with potentiometer Zero according to the table Calibration e Connect digital voltmeter to pin Test then adjust test voltage with potentiometer Gain according to the table Calibration e Remove calibration adapter with a careful light turn Check the sensor for correct mounting e By limiting the gain factor calibration will not be possible any more when the sensitivity of the sensor reaches a residual sensitivity of 30 Then the
6. sensor has to be replaced Table Calibration Starting point output Measuring range calibration Bridge voltage Test voltage signal gas concentration ppm 0 OV or 0 mA 300 100 See table 67 mV 20 2V or 4 mA 300 100 Overview of 93 mV 0 OV or 0 mA 2000 1000 Gases 100 mV 20 2V or 4 mA 2000 1000 Page 12 120 mV Automatikprodukter i Askim Tfn 46 0 31 28 72 02 Gasmossen 43 Fax 46 0 31 68 34 36 SE 436 39 ASKIM Sweden ID Automatikprodukter 5 3 5 4 Calibration with GCD 05 Service Tool Connect the GCD 05 Service Tool to the transmitter open menu Calibration Enter measuring range and test gas concentration Do not perform zero point calibration Connect digital voltmeter to pin Bridge and ground X4 pin 2 See fig 3 Connect calibration adapter carefully to the sensor element Apply calibration test gas 100 ppm or 1000 ppm 300 ml min 1 Bar 14 5 psi 10 Wait three minutes until the value is stable then adjust bridge voltage with potentiometer Zero according to the table Calibration sensor calibration Wait until the measuring value is stable and then perform automatic gain calibration at the service tool output signal calibration Remove calibration adapter carefully by turning lightly Check the sensor for correct mounting By limiting the gain factor calibration will not be possible any more when the s
7. signal line but do not connect the shield e Recommended cable anal mode J Y St Y 2x2x0 8 LG 20 AWG max res 73 O km 20 8 1000 ft e Required cable for RS 485 mode J Y St Y 2x2x0 8 LG 20 AWG max res 73 Q km 20 8 0 1000 ft e It is important to ensure that the wire shields or any bare wires do not short the mounted PCB 4 1 Wiring Connection e Open the cover Unplug basic PCB carefully from terminal blocks at X4 and X5 e Insert the cable connect cable leads to terminal blocks See fig 1 and 2 e Replug the PCB in the terminal blocks X4 X5 Replace cover 5 Commissioning Consider commissioning instructions at any exchange of sensor elements Only trained technicians should perform the following e Check mounting location e Select output signal form Current or voltage and starting point 0 or 20 See fig 4 e Check power voltage e Check PCB for proper mounting at X4 and X5 e Addressing of the transmitter in the GCD 05 Bus mode e Calibrate the transmitter if not already factory calibrated Required instruments for commissioning calibration of the transmitter e Test gas bottle with refrigerant test gas in the range of 1000 ppm for measuring range of 2000 ppm or 100 ppm for measuring range 300 ppm e Gas pressure regulator with flow meter to control the gas flow to 300 ml min e Calibration adapter with tube silicon free e g Viton Calibration set See fig 05 e Digital voltmeter with range 0
8. um vunnet kuene en hee a 7 2 GCD 05 Bus Mode EE Technical Datta sisi sccscocesacescececcuctaneaccacucceususes datacudeadsstecudausvaeusdssviadacsaesas ga adia 8 1 Cross Sensitivity Daae diinn i AATA A EARE EAE 8 2 Table Overview of Gases Data ae EEE EEE Notes and General Information sanannnaannnnnnnnnnnunnnnnnnnnnnnnunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnenennnnn 10 1 Intended Product Application cccccccececeeeeeeeeeeeeceeeeeeeseeeenaeeeeeeeeeeenennaeees 10 2 Installers Responsibilities A 10 3 E ne 10 4 kimited KC CL EE Automatikprodukter i Askim Tfn 46 0 31 28 72 02 Gasmossen 43 Fax 46 0 31 68 34 36 SE 436 39 ASKIM Sweden ID Automatikprodukter Transmitter with Semi conductor Sensor for Refrigerant Gases 1 Intended Use The AP gas transmitter with digital processing of the measuring values and temperature compensation is used for the continuous monitoring of the ambient air to detect the presence of refrigerant gases The main application consists in monitoring leakages in refrigeration plants with refrigerant gases HFC or HCFC as cooling agent for the compliance with the requirements according to EN 378 The intended sites are all areas being directly connected to the public low voltage supply e g residential commercial and industrial ranges as well as small enterprises according to EN50 082 The HFC HCFC transmitter must not be used in potentially explosive atmospheres The transmit
9. warranty applies only to the AP transmitter Automatikprodukter shall not be liable for any incidental or consequential damages arising out of or related to the use of the AP transmitters Automatikprodukter i Askim Tfn 46 0 31 28 72 02 Gasmossen 43 Fax 46 0 31 68 34 36 SE 436 39 ASKIM Sweden
10. 34a 100 1665 TGS 832 HFC 2000 ppm R134a 1000 3165 R413a SP42A HFC 300 ppm R134a 100 1665 TGS 832 HFC 2000 ppm R134a 1000 3165 R A16a SP42A HFC 300 ppm R134a 100 1665 Sai TGS 832 HFC 2000 ppm R134a 1000 3165 R417a SP42A HFC 300 ppm R134a 100 1665 TGS 832 HFC 2000 ppm R134a 1000 3165 R 507 SP42A HFC 300 ppm R134a 100 1665 3 45 TGS 832 HFC 2000 ppm R134a 1000 3165 R 410a SP42A HFC 300 ppm R134a 100 1665 23 TGS 832 HFC 2000 ppm R134a 1000 3165 R11 TGS 830 CFC 2000 ppm XX XX R12 TGS 830 CFC 2000 ppm XX XX R123 TGS 832 HFCKW 2000 ppm R123 1000 2033 5 28 R133 TGS 830 CFC 2000 ppm XX XX Automatikprodukter i Askim G smossen 43 SE 436 39 ASKIM Sweden Tfn 46 0 31 28 72 02 Fax 46 0 31 68 34 36 ID Automatikprodukter 8 Figures Application Analog mode Fig 1 Application GCD 05 Bus mode Fig 2 Transmitter Connection field bus and tension Connection analog transmitter Two or three wire connection depending on transmitter type Automatikprodukter i Askim Tfn 46 0 31 28 72 02 Gasmossen 43 Fax 46 0 31 68 34 36 SE 436 39 ASKIM Sweden ID Automatikprodukter Option Manual Addressing voltage Selection analog output signal Fig 4 Option Manual Calibration DR 0 26 Terminal block Anal Output Start Point EE 20 X4 NO NC NO NC Function Relay R2 ao A OU N gt
11. ID Automatikprodukter Transmitter HFC HCFC Transmitter for Refrigerant Gases User Manual August 2010 Automatikprodukter i Askim Tfn 46 0 31 28 72 02 Gasmossen 43 Fax 46 0 31 68 34 36 SE 436 39 ASKIM Sweden lt i gt Automatikprodukter 10 Intended Uee esse HBr oer el So ers oe Sr ve Sr PS nr a a ave Ee aa ie eer Functional Description ssrennnnnnnvennnnnnvnnnnnnnnnnnnnnnnennnnnnnnnnnnnnnennnnnnnnennnnnnnnnnnnnnnennnnnnenn 21 Control Mode EE 22 EISE ee ee ege iil E aIL p oS EE EEEE EEE EE EE E E E E EEE E 3 1 Mounting Instructions mernrrrnronnrrvnrrnrrenrrnnrrenrrnnrrrenrenrrenrennrnensennrreerennrrensen unne 3 2 Installation unne EleeigecalCGopnpnechton eggaeee e EE dE ENNEN EENS AA Wiring Connection EE COMMISSIONING DE Ded e lee Le EE 5 2 Manual Calibration nr rnnrnnernnrnnn ea E EE ia 5 2 17 ZeroPoN EE D2 CAIN DEE 5 3 Calibration with GCD 05 Service Tool 5 4 Calibration with GCD05 East ont 5 5 Addressing only for GCD 05 Bus mode cece eeeeeeeeeeeceeeeeeeteeeseeneeeeeeaaes 5 6 Option Relay Output sisinarieun ctandedaseateennacneacedstaderaees Inspection and Service rrrsvrnnnnvnnnnnvnnnnvvnnnnvnnnnnnnnnnnnnnnnnnnnvnnnnnnnnnnnnnnnenennnnnnnnnnnnnnnnnnnnn 6 1 Inspechons eee 6 2 Calibration eee 6 3 Exchange of Sensor Element Troubleshooting r sseennnnnnnvvnnnnnnvnnnnnnnvnnnnnnnvennnnnnvennnnnnvennnnnnnvennnnnnnennnnnneennnnnneenennnneenennn FA Analog Mode
12. d OSHA requirements Installation should be implemented only by technicians familiar with proper installation techniques and with codes standards and proper safety procedures for control installations and the latest edition of the National Electrical Code ANSI NFPA70 It is also essential to follow strictly all instructions as provided in the user manual 9 3 Maintenance It is recommended to check the AP transmitter regularly Due to regular maintenance any performance deviations may easily be corrected Re calibration and part replacement in the field may be implemented by a qualified technician and with the appropriate tools Alternatively the easily removable plug in transmitter card with the sensor may be returned for service to Automatikprodukter 9 4 Limited Warranty Automatikprodukter warrants the AP transmitters for a period of one 1 year from the date of shipment against defects in material or workmanship Should any evidence of defects in material or workmanship occur during the warranty period Automatikprodukter will repair or replace the product at their own discretion without charge This warranty does not apply to units that have been altered had attempted repair or been subject to abuse accidental or otherwise The warranty also does not apply to units in which the sensor element has been overexposed or gas poisoned The above warranty is in lieu of all other express warranties obligations or liabilities This
13. ensitivity of the sensor reaches a residual sensitivity of 30 In this case the sensor has to be replaced Further information can be taken from the user manual of the CGD 05 Service Tool Calibration with GCD05_EasyConf Connect the PC via USB RS 485 communication set to the transmitter open menu Calibration Enter measuring range and test gas concentration Do not perform zero point calibration Connect digital voltmeter to pin Bridge and ground X4 pin 2 See fig 3 Connect calibration adapter carefully to the sensor element Apply calibration test gas 100 ppm or 1000 ppm 300 ml min 1 Bar 14 5 psi 10 Wait three minutes until the value is stable then adjust bridge voltage with potentiometer Zero according to the table Calibration sensor calibration Wait until the measuring value is stable and then perform automatic gain calibration in the menu output signal calibration Remove calibration adapter carefully by turning lightly Check the sensor for correct mounting By limiting the gain factor calibration will not be possible any more when the sensitivity of the sensor reaches a residual sensitivity of 30 In this case the sensor has to be replaced Further information can be taken from the user manual of the GCD 05 Configuration and Calibration Software Automatikprodukter i Askim Tfn 46 0 31 28 72 02 Gasmossen 43 Fax 46 0 31 68 34 36 SE 436 39 ASKIM Sweden ID Aut
14. hysteresis are freely adjustable at the PC within the measuring range The procedure can be read from the user manual MODBus Software The following parameters are factory set Alarm threshold 1 Relay 1 100 500 ppm Alarm threshold 2 Relay 2 200 1000 ppm Switching hysteresis 25 100 ppm Automatikprodukter i Askim Tfn 46 0 31 28 72 02 Gasmossen 43 Fax 46 0 31 68 34 36 SE 436 39 ASKIM Sweden ID Automatikprodukter 6 Inspection and Service 6 1 Inspections Inspection service and calibration of the transmitters should be done by trained technicians and executed at regular intervals We therefore recommend concluding a service contract with AP or one of their authorized partners 6 2 Calibration See section 5 1 and 5 2 e At periodic intervals determined by the person responsible for the gas detection system recommendation every 12 months e If in case of operational or climatic influences the sensitivity of the sensor falls below 30 in operation calibration will not be possible any more Then the sensor has to be replaced 6 3 Exchange of Sensor Element Consider static electricity See point 3 Sensor has to be replaced completely including the electronics The replacement electronics with the new sensor is already factory calibrated e Unplug basic PCB ETO3 carefully from the bottom part e Plug in the new PCB including the new sensor at terminals X4 X5 7 Troubleshooting 7 1 Analog M
15. ltage signal ca 200 m 500 ft Data only for option stainless steel for further types see datasheet Enclosure Automatikprodukter i Askim G smossen 43 SE 436 39 ASKIM Sweden Tfn 46 0 31 28 72 02 Fax 46 0 31 68 34 36 lt i gt Automatikprodukter Guidelines EMC Directive 2004 108 EEC CE Warrant 1 year on material without sensor Options Relay output Alarm relay 1 switch threshold 10 LEL 30 VAC DC 0 5 A potential free SPDT Alarm relay 2 switch threshold 20 LEL 30 VAC DC 0 5 A potential free SPNO SPNC Power consumption 30 mA max 0 8 VA Warning buzzer Acoustic pressure 83 dB distance 200 mm 0 7 ft Frequency 2 3 kHz Power consumption 30 mA max 0 8 VA LCD Display LCD Two lines 16 characters each not illuminated Power consumption 10 mA max 0 3 VA Heatin Temperature controlled 3 C 2 C 37 5 F 3 6 F Ambient temperature 30 C 22 F Power supply 18 28 VDC AC Power consumption 0 3 A 7 5 VA Analog input Only for RS 485 mode 4 20 mA overload and short circuit proof input resistance 200 Q Tension for external analog transmitter 24 VAC DC depending on the power supply max load 50 mA 7 3 Cross Sensitivity Data TSS 850 T TGS 832 T T SP42A a Automatikprodukter i Askim Tfn 46 0 31 28 72 02 Gasmossen 43 Fax 46 0 31 68 34 36 SE 436 39 ASKIM Sweden ID Automatikprodukter
16. ode Output signal lt 3 mA 1 5 V Jumper 0 20 not set Check jumper position and or control voltage lt 30 mV Measure tension at X4 only for starting signal 2V 4 mA Bower voltage not applied Two wire Pin 1 and 4 Three wire Pin 1 and 2 PCB not plugged in correctly at X4 and Replug PCB correctly X5 Check the wiring Output signal gt 22 mA 220 mV Short circuit Check the wiring Control voltage does not reach Sensor element not calibrated Calibrate sensor element the calculated value Sensor sensitivity lt 30 Replace sensor element No reaction of the output signal Power voltage not applied Measure tension at X4 in spite of gas concentration Signal Pin 4 not wired correctly Check the wiring Automatikprodukter i Askim Tfn 46 0 31 28 72 02 Gasmossen 43 Fax 46 0 31 68 34 36 SE 436 39 ASKIM Sweden ID Automatikprodukter 7 2 GCD 05 Bus Mode Power voltage not applied Measure tension at X4 Pin 1 and 2 PCB not plugged in correctly at X4 X5 Replug PCB correctly Check wiring No communication at the transmitter Yellow LED not shining Transmitter not addressed check bus wiring incl topology and termination Voltage lt 16 V No control voltage at calibration Jumper V A not set Set the jumper Remove it after calibration Technical Data Yellow LED not flashing General sensor performances Gas type Refrigerant gases see table Gases Data Sensor element
17. omatikprodukter 5 5 Addressing only for GCD 05 Bus mode In the GCD 05 Bus mode each transmitter gets its communication address In the standard version with the communication connector X12 addressing is done by means of the GCD 05 Service Tool or by the GCD 05 Configuration and Calibration Software See user manual of the Service Tool or of the Configuration and Calibration Software In the manual addressing version which can be identified by the address switch being equipped there is a maximum of 60 addresses to be selected See fig 3 The jumper is responsible to define the address group and the switch to define the address according to the following table Switch Jumper pos 01 Jumper pos 02 Jumper pos 03 Jumper pos 04 poston address address address address inactive inactive inactive inactive 2 3 A 5 6 7 8 9 A B C D E F 5 6 Option Relay Output The two relays are activated in dependence of the gas concentration If the gas concentration exceeds the adjusted alarm threshold the corresponding relay switches on If the gas concentration falls below the threshold minus hysteresis the relay switches off again The contact function for relay 2 NC normally closed or NO normally open can be selected via the jumper NO NC See fig 1 and 3 Relay 1 is equipped with a change over contact Via the MODBus interface the two alarm thresholds and the
18. rations of zero point Zero and gain are necessary Caution Certain substances and gases in the atmosphere being monitored can affect the sensitivity of the refrigerant gas sensor element and or poison the sensor completely The following are currently known e Silicones e Corrosive substances like H2S SO Cl HCI etc can lead to corrosion and damage of the sensor e Alkaline metals cause a considerable drift of the sensor Automatikprodukter i Askim Tfn 46 0 31 28 72 02 Gasmossen 43 Fax 46 0 31 68 34 36 SE 436 39 ASKIM Sweden ID Automatikprodukter 3 Installation Note Avoid any force e g by thumb on the sensor element during operation or installation Electronics can be destroyed by static electricity Therefore do not touch the equipment without a wrist strap connected to ground or without standing on a conductive floor acc to DIN EN100015 3 1 Mounting Instructions When choosing the mounting site please pay attention to the following The mounting height depends on the gas type to be monitored For gases and vapours with a density gt air the transmitter must be located near the ground For gases and vapours with a density lt air the transmitter must be located at the highest point possible Gas density and mounting height can be read from the table Overview Gases Data Choose mounting location of the sensor according to the local regulations Consider ventilation conditions Do not mount
19. ter must only be used within environmental conditions specified in the Technical Data 2 Functional Description 2 1 Control Mode In addition to the analog output the transmitter is equipped with a serial interface RS 485 for the connection to the GCD 05 system Analog mode The analog output can be selected as current signal with 0 4 20 mA or as voltage signal 0 2 10 V GCD 05_Bus mode The transmitter can be connected to the GCD 05 system via the RS 485 interface In this mode there is an analog input for the connection of an additional 4 20 mA transmitter The two measuring values are transmitted via the RS 485 interface to the gas controller The cable topology for the RS 485 bus can be taken from the Guidelines for wiring and commissioning of the GCD 05 hardware The two control modes are available in parallel 2 2 Sensor A semi conductor sensor is integrated in the HFC HCFC transmitter The ambient air being monitored diffuses through a metal grid into the sensor The gas oxidises at the heated detector element metallic oxide and changes the conductivity in dependence of the gas concentration This non linear alteration of the conductivity is evaluated by the internal sensor electronics and linearised by the micro processor The temperature compensation is also integrated in the transmitter Oxidation processes lead by and by to an unwanted influence on the alteration of the conductivity Therefore regular calib
20. the transmitter in the centre of the airflow air passages suction holes Mount the transmitter at a location with minimum vibration and minimum variation in temperature avoid direct sunlight Avoid locations where water oil etc may influence proper operation and where mechanical damage might be possible Provide adequate space around the sensor for maintenance and calibration work Duct mounting Mount only in a straight section of duct with minimum air vortex Keep a minimum distance of 1 m 3 5 feet from any curve or obstacle Mount only in a duct system with a maximum air velocity of 10 m s 2000 ft min or less Mounting must be performed so that the probe openings are in line with the airflow 3 2 Installation Open the cover Unplug basic PCB carefully from the bottom part Fix bottom part by screws vertically to the wall terminal blocks to the ground Plug in the basic PCB at X4 and X5 with care Replace the cover Automatikprodukter i Askim Tfn 46 0 31 28 72 02 Gasmossen 43 Fax 46 0 31 68 34 36 SE 436 39 ASKIM Sweden ID Automatikprodukter 4 Electrical Connection Consider static electricity See 3 Mounting e Installation of the electrical wiring should only be performed by a trained specialist according to the connection diagram without any power applied to conductors and according to the corresponding regulations e Avoid any influence of external interference by using shielded cables for the
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