SM70 User Guide
Contents
1. 0x01 1 digit int 3 decimal points eg 0 500 ppm 0x02 2 digits int 2 decimal points eg 12 20 ppm 0x03 3 digits int 1 decimal point eg 126 8 ppm 0x04 4 digits int no decimal point eg 2888 ppm STATUS1 8 bits monitor and sensor status information SSO b0 00 sensor working fine SS 1 b1 01 sensor failure 11 sensor aging for O3 LOW sensor only Reservedl b2 Reserved not been used Reserved2 b3 Reserved not been used Reserved3 b4 Reserved not been used Reserved4 b5 Reserved not been used Reserved5 b6 Reserved not been used Reserved6 b7 Reserved not been used STATUS2 8 bits monitor and sensor status information Reserved0 b0 Reserved not been used Reserved1 b1 Reserved not been used Zeroing b2 0 sensor normal working mode b2 1 sensor zeroing Reserved2 b3 Reserved not been used Reserved3 b4 Reserved not been used Reserved4 b5 Reserved not been used Reserved5 b6 Reserved not been used Reserved6 b7 Reserved not been used Section 3 Data value format representation The floating point data values use IEEE754 32 bits floating point little ending representation They are DATA1 and FACTOR Section 4 Data transfer mechanism 1 Due to the monitor main chips feature 4 bytes floating point data and 2 bytes int data send sequence are low byte first high byte last such as section 3 data DATA1 DATA2 ADAT3 and FACTOR 2 For regular data report The SM70 sensor will2. Sampling method Operational mode Operating temperature Operating relative humidity Warm up time Display Relay set point Digital output Analog output Relay output Buzzer alarm optional Power supply Enclosure rating Enclosure dimensions Enclosure casing Enclosure mounting Weight Approvals MRK D 0017 V1 O FOOUIS Analytic GSS Technology Gas Sensitive Semiconductor Available with ozone or VOC sensors in various ranges Please refer to sensor specification table at www aeroqual com Active sampling Continuous Control or Alarm 0 C to 40 C 10 to 90 non condensing 10 minutes 3 5 digit LCD User configurable RS232 and RS485 0 5 VDC 8 bit 24 V 5A max Internal piezo 85 db 30 cm 12 VDC 800 mA Plug in AC power adaptor supplied IP20 amp NEMA 1 equivalent 130 W x94Hx57D mm 52ZWx3 Hx2 D in Flame resistant thermoplastic PS Screw fix lt 270g 9 5 oz excludes AC power adaptor Part 15 of FCC Rules EN 61000 6 3 2001 EN 61000 6 1 2001 FE CE Page 12 Aeroqual SM70 User Guide aeroaqual Appendix 1 Copyright Copyright Aeroqual Limited All rights reserved Reproduction transfer distribution or storage of part or all of the contents of this document in any form without the prior written permission of Aeroqual Limited is prohibited Terms and Conditions This product is warranted according to Aeroqual Ltd s Terms of Trade For further warranty informa
3. is 515 then the actual reading is 51 5 RESERVED2 is 2 bytes reserved STATUS1 1 byte sensor status indication refer section 3 for details STATUS2 1 byte sensor status indication refer section 3 for details CHECKSUM 1 byte the data stream s check sum that makes the command stream total sum is zero 2 SM70 sensor information request command Command RECEIVER SENSOR_INFO RESERVED1 CHECKSUM Reply SENSOR SENSOR_INFO VERSION_NO DISPLAY NMAE_ LENGTH SENSOR_NAME RESERVED2 CHECKSUM RECEIVER 1 byte information request command header see section 2 for its value SENSOR 1 byte monitor reply data stream header see section 2 for its value SENSOR_INFO 1 byte command see section 2 for its value VERSION_ NO 1 byte sensor version number see section 2 for its value DISPLAY 1 byte gas concentration value display format type see section 2 for its value NAME_LENGTH 1 byte specify the sensor name byte length SENSOR_NAME 7 bytes the gas sensor name ASCII code its valid bytes are specified by NMAE_LENGTH RESERVED1 1 bytes reserved use value 0x00 RESERVED2 2 bytes not used CHECKSUM 1 byte the data stream s check sum that makes the command stream total sum is zero 3 SM70 sensor concentration ppm to mg m3 conversion factor request command Command RECEIVER CONVERT FACTOR RESERVED1 CHECKSUM Reply SENSOR CONVERT_FACTOR FACTOR RESERVED8 CHECKSUM SENSOR 1 byte m
4. 0 User Guide aeroaual Appendix 2 Serial Communication Protocols RS232 Protocol The Aeroqual SM70 digital information output is based on the following RS232 protocol These command protocols are specified by Aeroqual Limited all rights reserved Aeroqual reserves the right to change the protocol without notification Version 2 2 Date 23 09 2009 Added zero calibration function Combined with temperature and relative humidity sensor data Section 1 Descriptions of communication commands for data format and representations please refer to section 3 Comma and spaces are not applied for every command and reply data stream they are just used for clearly specifying data stream 1 SM70 sensor regular data report command the data report interval varies with sensor lt is 15 bytes data stream SENSOR DATA_REPORT DATA1 DATA2 DATA3 RESERVED2 STATUS1 STATUS2 CHECKSUM SENSOR 1 byte monitor reply data stream header see section 2 for its value DATA_REPORT 1 byte data report command see section 2 for its value DATA1 4 bytes floating point data gas concentration value DATA2 2 bytes unsigned int used for optional sensors of temperature reading its value scaled up by 10 that means if the reported value is 256 then the actual reading is 25 6 Celsius degree DATA 2 bytes unsigned int used for optional sensors of relative humidity reading its value scaled up by 10 that means if the reported value
5. 0 will DATA1 be a valid concentration reading SENSOR 1 byte monitor reply data stream header see section 2 for its value DATA_REQUEST 1 byte heater data report see section 2 for its value DATA_REPORT 1 byte gas concentration data report command see section 2 for its value DATAI 4 bytes floating point data when command reply is DATA_REPORT this value is gas concentration in ppm DATA2 reserved RESERVED is 2 bytes data space reserved STATUS1 1 byte monitor and sensor status indication refer section 3 for details STATUS2 1 byte reserved CHECKSUM 1 byte the data stream s check sum that makes the command stream total sum is zero 2 SM70 sensor information request command Command BASE SENSOR_INFO RESERVED CHECKSUM Reply SENSOR SENSOR_INFO VERSION_NO DISPLAY NMAE_ LENGTH SENSOR_NAME RESERVED CHECKSUM BASE 1 byte information request command header see section 2 for its value SENSOR 1 byte monitor reply data stream header see section 2 for its value SENSOR_INFO 1 byte command see section 2 for its value VERSION_NO 1 byte sensor version number see section 2 for its value DISPLAY 1 byte gas concentration value display format type see section 2 for its value NAME_LENGTH 1 byte specify the sensor name byte length SENSOR_NAME 7 bytes the gas sensor name ASCII code its valid bytes are specified by NUAE_LENGTH RESERVED 1 byte CHECKSUM 1 b
6. C Analog OU pUI c0 HH1 HT TT n KT n ng n 8 4 5 Serial communications 4 8 S CD ANON sa E E E E A E EE 9 5 1 Zero Calibration Procedure 4 9 5 2 Span Check Procedure a ieisscaxecdy iendeciialnnteaduiierincadatinnaenpaiendewde en nid eni enian ni ia E 9 6 Maninang ore ga a 9 6 1 Replacing the Sensor Board S1 10010110 1110110111111 TT n ng 10 Je WOU RE SHOOHHD ao 6 6 aa s 11 Br SE CIICANOINS i S E E E lop 12 DER 13 ORAL 13 Terms ana CO INOS secrete s21 0ngcae15 2124i 1623205055 102g212n62001592 3 d ae 12 asittonaastitBngzsetofciegt io seas920155 0 52s0 060258 13 Statements of Compliance pp 13 PROC 2 sa a lt 4 14 Serial COMMUNICATION PFOIOCOIS acc co cccccccccccciic ctcceccsclkssddsgueutidsgibikbdagdeduiskQuatiddgdgiuliussg ki 14 IDG 14 FID 469 PP FOLOCO as esssesecat sadechtanacsssaasnectedaencdoctd sacs aE AAE EASA A ANAA AAO n saceandabeedeatiaods aaan Nania aiai 16 Page 2 MRK D 0017 V1 Aeroqual SM70 User Guide O FOOUIS For Your Safety The Aeroqual SM70 Monitors are used to monitor ambient gas concentrations Aeroqual does not guarantee user safety In hazardous environments an appropriate Health and Safety plan should be in place The SM70 contains no user serviceable parts Return unit to Aeroqual or your Distributor for servicing Use
7. O normally open NC normally closed contacts Three SM70 relay control firmware programs are available AA AB C10 The user should have specified the program installed prior to delivery The relay logic of the three firmware versions is described below External equipment connected to the on board relay should be wired appropriately to the normally open or normally closed contacts AA Alarm Above the relay is programmed to energise above the selected set point Typical applications are health and safety alarm warning systems or switching external equipment on and off This is the default software Page 5 MRK D 0017 V Aeroqual SM70 User Guide aeroaqual Relay closed energised Set Point Relay open de energised e When gas concentration is rising from below the Set Point relay de energised relay NO open NC closed e When gas concentration rises and reaches the Set Point relay is energised relay NO closed NC open e When gas concentration drops and reaches the Set Point relay de energised relay NO open NC closed AB Alarm Below the relay is programmed to energise below the selected set point Typical applications are fail safe warning systems or controlling a gas generator Relay open de energised Set Point Relay closed energised e When gas concentration is rising from below the Set Point relay energised relay NO closed NC open e When gas con
8. Oe rOOUGIE SM7O USER GUIDE Aeroqual Limited 109 Valley Road Mount Eden Auckland New Zealand t 64 9 623 3013 f 64 9 623 3012 e technical aeroqual com aeroqual com aeroaqual Contents OLS NS 1222021200222 2 1 5a as 2 FOr YOU Sale 2 7202222112 72222 2220020 2222002220222202222222222222222 222122020200 niaeiriiiE 3 t OND COD OCS e E EE ne9rronosfx2izcs22353n903212X0 n210 5555u8020710 3 2 About Your Monitor Controller 222 i2aiiisiriaeaiiiiiiciiiinsastoadafntexsssldtsBadyerdiivagiysfstiosgilisVsiecasdes 3 3 Geng Slane sani aE EEEE EEE a EE O E ERE 4 Ie Mae E na E eee e 4 3 2 Turning the monitor ON and Of 3111110010101 10 111111011 111111 ng ren 4 Jo Nai 4 3 4 External Wiring through the Cable Gland 211123111111 1111111 xen 4 A Input and OUIBULSIOHRBIS eiececcoiciaiioecoioioiioooiroiooibsiooverodneliuiurispogutgreuubvsosbdgupsbtiduekvsdais 5 4 1 Sensor Board Switches Nt 5 i is AAA 5 Aea R8 Ea c 0a EAEE Oe nee ee eee 5 4 1 3 SR 5 4 1 4 RELAY Dip WLG 9P C Y EEE RRE ah C C C c 5 A G EOAI ELO Ca 2020222012227 201022622 22x2215 0002 2921226 2s02223 2500 5 4 2 1 Status LED Normal and Failure modes pp 5 Toe RORY EIE 4124441001202062524 002271 0202209203517 0un5070662191120 003022059091130142302 530795905viinA6940400 74009 111 908 5 5 4 3 1 Setting the Relay and Alarm Set Point 4 7 4 3 2 Wiring to the rejay 4 7 4 4 0 5VD
9. automatically send out a measured data result to the RS232 serial port according to sensor type The data report interval will vary with different sensors The longest report interval is about 2 minutes the shortest one is only 2 seconds Please ask Aeroqual for this information when needed Page 15 MRK D 0017 V Aeroqual SM70 User Guide qaeroaqual Section 5 RS232 communication port settings Baud rate 9600 Data bits 8 Stop bits 1 Parity none Flow control none RS485 Protocol The Aeroqual SM70 sensors digital information output is available on RS485 These command protocols are specified by Aeroqual Limited all rights reserved Aeroqual keep the rights to change the protocol without notification Version 1 0 Date 05 12 2008 Section 1 Descriptions of communication commands for data format and representations please refer to section 3 Comma and spaces are not applied for every command and reply data stream they are just used for clearly specifying data stream Aeroqual SM70 sensor module RS485 protocol is a slave mode Master receivers need send request command to get response 1 SM70 sensor data request command it is 4 bytes data stream BASE DATA_REQUEST RESERVED CHECKSUM example 0x55 0x1A 0x00 0x91 Reply data stream is 15 byte SENSOR DATA_REPORT DATA1 DATA2 RESERVED STATUS1 STATUS2 CHECKSUM The second byte DATA REPORT will be either 0x1A or OxOF or 0x10 Only if DATA REPORT 0x1
10. bration can be undertaken by the user following procedure 5 1 Always undertake a zero calibration before doing a span check The SM70 span response can be checked by the user following procedure 5 2 In order to calibrate successfully the following equipment is needed R42 Calibration Gas Humidifier Aeroqual accessory Inert tubing between regulator to R42 eg PFA tubing 0 5 LPM constant flow regulator eg Calgaz regulator model 715 flow rate 0 5 LPM Zero grade air cylinder or zero air generator Span gas in air cylinder or ozone source R42 calibration accessory 5 1 Zero Calibration Procedure 1 If necessary charge R42 Calibration Gas Humidifier with 5g of water with water syringe via water inlet 2 Connect zero air cylinder and regulator to R42 with tubing 3 Remove the lid of the SM70 and detach the sensor board to locate the Zero Cal button 4 Place the R42 outlet over the SM70 sensor 5 Flow zero air into R42 until the SM70 reading stabilises about 10 minutes 6 Initiate Zero Calibration on the Aeroqual SM70 by pressing the button on the sensor PCB marked zero cal 7 Wait 5 minutes for the process to be completed Zero air connected to R42 5 2 Span Check Procedure If necessary charge R42 Calibration Gas Humidifier with 5g of water with water syringe via water inlet Connect span gas cylinder and regulator to R42 gas inlet with tubing Place the R42 outlet over the SM70 sens
11. centration rises and reaches the Set Point relay is de energised relay NO open NC closed e When gas concentration drops and reaches the Set Point relay energised relay NO closed NC open C10 The relay is programmed to open and close around the selected control set point 10 to create a control band Typical application is for maintaining a specific gas concentration between user defined levels through the control of an external device e g ozone generator HUO s sesss se teseeecsec cccsdylsseecsesec eceese seesseee Relay open Software Dead Band of 10 of set point de energised 100 Set Point 90 o Page 6 MRK D 0017 V1 Aeroqual SM70 User Guide aeroaqual e When the gas level is rising from below Lower Limit to Upper Limit relay is energised NO closed NC open e When gas level is falling from above Upper Limit to Lower Limit relay is de energised NO open NC closed 4 3 1 Setting the Relay and Alarm Set Point The Relay Set Point can be altered by adjusting the set point dip switches as shown below The Relay Set Point is factory set unless otherwise specified to OFF ON OFF ON The setpoint levels for different dipswitch settings are provided below for some sensors Contact Aeroqual if your sensor is not listed Table Dipswitch setpoint levels 1 2 3 4 0 0 150 ppm 0 0 5 ppm 0 10ppm 0 500 ppm 0 25 ppm oem ooo oo ooom 000 oso 1 o o
12. chemical spray or high levels of dust Doing so may significantly shorten the life of the sensor Page 3 MRK D 0017 V Aeroqual SM70 User Guide aeroaual 3 Getting Started 3 1 Installation Wall mounting brackets are provided and fit into the holes at each corner of the enclosure see picture below Concealed tamperproof screw fixing through the corner posts of the enclosure is also possible without using the fixing brackets The SM70 should be installed at a location that is free from contaminants that might affect the performance of the sensor module 3 2 Turning the monitor on and off The SM70 is designed to run constantly To turn the monitor on simply plug in the 12 VDC cable from the AC adaptor and turn on at the mains switch To turn the SM70 off switch it off at the mains switch 3 3 Warming up The SM70 sensor sometimes requires warming up to achieve a stable baseline It has an inbuilt warming cycle of about 3 minutes but may need longer to under certain conditions If it is the first time the monitor has been powered on it is recommended to run it for a period of a few hours before use 3 4 External Wiring through the Cable Gland The SM70 enclosure is pre drilled and fitted with a cable gland to facilitate a cable connection to the SM70 relay and data output connectors Cable gland for RS232 or RS485 connection Page 4 MRK D 0017 V1 Aeroqual SM70 User Guide O FOOUIS 4 Input and Out
13. is in the first instance to help diagnose a suspected fault If you are unable to find the fault in the table or the suggested remedy does not work please contact Aeroqual s Technical Support by sending an email to technical aeroqual com This automatically generates a ticket which will be acted upon by a Technical Support Person Fault Pamebleeausee Remedy No Power Power supply failure Replace 12 VDC plug pack SM70 damaged Replace sensor board sensor failure Status LED Sensor needs warming Run the SM70 for 24 hours in clean air flashes quickly Up Move SM70 to a clean environment Air contaminated Replace sensor board SM70 sensor damaged Reading high in clean air Insufficient warm up Run the SM70 for 24 hours in clean air Air contaminated Move the sensor to clean air Sensor damaged environment Replace sensor board Reading lower than expected Sensor correct Gas concentration is lower than Interferent gas present expected sensor calibration Do span check incorrect Do span check Reading higher than expected Sensor correct Gas concentration is higher than Interferent gas present expected sensor calibration Do span check incorrect Do span check Reading unstable Power supply unstable Replace power supply Local airflow is unstable Shield unit from airflow EMF interference is high Shield unit from interference Page 11 MRK D 0017 V1 Aeroqual SM70 User Guide 8 Specifications Sensor type Sensor specifications
14. ism Due to the monitor main chips feature 4 bytes floating point data and 2 bytes int data send sequence are low byte first high byte last such as section 3 data DATA1 and FACTOR Section 5 RS485 communication port settings Baud rate 4800 Data bits 8 Stop bits 1 Parity none Flow control none Page 17 MRK D 0017 V1 Aeroqual SM70 User Guide
15. onitor reply data stream header see section 2 for its value CONVERT_FACTOR 1 byte command see section 2 for its value FACTOR 4 bytes floating point conversion factor value see section 3 for details RESERVEDI 1 bytes reserved use value 0x00 RESERVED8 8 bytes reserved CHECKSUM 1 byte the data stream s check sum that makes the command stream total sum is zero Page 14 MRK D 0017 V1 Aeroqual SM70 User Guide aeroaual 4 SM70 sensor zero calibration command 4 bytes Command RECEIVER ZERO CAL RESERVED1 CHECKSUM ZERO_CAL 1 byte 0x12 command to start zero calibration for the sensor see section 2 for its value RESERVEDI 1 bytes reserved use 0x00 CHECKSUM 1 byte the data stream s check sum that makes the command stream total sum is zero During zero calibration SM70 status LED will slowly flash once the flash finished zero calibration finished too Section 2 Protocol command values RECEIVER 0x55 header command used for receiver command SENSOR 0xAA_ header command used for monitor reply DATA_REPORT 0x10 regular data report command ZERO_CAL 0x12 zero calibration command SENSOR_INFO 0xFB parameters upload command CONVERT_FACTOR 0x2A update monitor real time clock RESERVED 0x00 the byte not been used for information transfer CHECKSUM a data stream s check sum that makes the command stream total sum is zero DISPLAY display format can be following
16. only approved accessories When connecting to any other device read the appropriate user guide for detailed safety instructions Do not use the SM70 in or near flammable fuel or chemicals 1 SM70 Components The following components are supplied with the SM70 Monitor SM70 Monitor 12 VDC AC DC adaptor Enclosure mounting brackets User guide Please check that all these components have been supplied and contact your dealer or Aeroqual on email at sales aeroqual com if any of the components are missing 2 About Your Monitor Controller The Aeroqual SM70 Monitor is designed for monitoring of gases in an indoor environment It is supplied with three different versions of firmware which control the internal relay in different ways depending on the application see table below The version installed is indicated on an internal label under lid Please ensure you have the version you require Table 1 SM70 firmware versions and description Firmware Desepimn S Alarm above the relay is energised when the reading is above the setpoint Alarm below the relay is energised when the reading is below the setpoint C10 Control the relay is energised to control the gas concentration to a band within 10 of the setpoint The SM70 is supplied pre drilled with a cable gland to facilitate connection to the relay and communication terminations The SM70 is a sensitive instrument and should not be exposed to steam water
17. or Flow span gas air into R42 until the SM70 reading stabilises typically 10 minutes If the SM70 does not respond correctly then the sensor board should be replaced oe ey 6 Maintenance The SM70 is designed to be a low maintenance instrument with no user serviceable components It is recommended that the SM70 be zero and span checked at regular intervals monthly if possible to ensure on going responsiveness The sensor board needs to be replaced with a calibrated board annually Page 9 MRK D 0017 V Aeroqual SM70 User Guide aeroaual 6 1 Replacing the Sensor Board e Unscrew the four lid screws and remove lid e Unscrew sensor board using a 5 5mm hexa socket screwdriver and remove cabling Keep the screws nuts washers and standoffs for re use e Connect cabling to new sensor board and re attach to enclosure lid Connect new board ean L N L Make sure board does not rest on connectors Place board in enclosure ensuring screws slide through both holes so board is resting on the plastic standoffs underneath Use 5 5mm Hexa Socket Screwdriver or Small Grip Pliers to tighten nuts N B Remember to replace the brown washers Use Flat Screwdriver to hold _ gt screw in place during Page 10 MRK D 0017 V1 Aeroqual SM70 User Guide aeroaqual 7 Troubleshooting A fault diagnosis table is given below Please consult th
18. put signals 4 1 Sensor Board Switches The SM70 sensor board contains a number of buttons LEDs and a dipswitch which are accessible once the sensor board is detached from the lid See section 6 0 4 1 1 ZERO CAL This button activates a zero calibration routine on the sensor It should only be pushed when you are performing a zero calibration 4 1 2 RESET This button resets the SM70 microcontroller without needing to remove the power from the SM70 4 1 3 SPAN This button will change the span calibration of the SM70 and should not be activated for any reason 4 1 4 RELAY Dipswitch The Relay dipswitch changes the set point for activation of the SM70 relay See section 4 3 for a description of the concentration set points 4 2 Sensor Board LEDs 4 2 1 Status LED Normal and Failure modes The status LED glows green and is located on the Sensor board At start up the Status LED will flash 2 to 6 times at an interval of 0 5 seconds During the 3 to 10 minute warm up time the Status LED will flash at an interval of 2 seconds Normal status Constant on Sensor Failure Flashes quickly at an interval of 0 3 seconds 4 2 2 Relay LED The relay LED glows red and is also located on the Sensor board This LED comes on when the relay is energised 4 3 Relay The SM70 sensor module can be used as a simple gas sensitive relay switch to control devices or activate alarms using the on board relay The relay has COM common N
19. r wire between Com and GND Insert diode in circuit to Diode xc IN4004 suppress back EMF External relay must be suitably rated to switch the external load Operating voltage of relay coil must be LNE 12 VDC 240 VAC 4 4 0 5VDC Analog output The gas concentration is available as a 0 5V signal at the 0 5V and AGND connectors on the screw terminal block 0 volts zero ppm and 5 V designated range of sensor for example a 0 0 5 ppm Os SM70 module would output 5V at 0 500 ppm ozone The resolution of the analog signal is 8 bit NOTE the 0 0 150ppm O3 sensor analogue output is 1 5V at 0 150ppm full scale All other sensors output 5 0V at full scale 4 5 Serial communications Gas concentration data is available on the RS232 and RS485 digital communication channels The RS485 channel is 2 wire the RS232 is 2 wire plus GND Connection is via the screw terminal connectors on the sensor board The communication protocols for these serial interfaces are provided in the Appendix Please note the RS232 serial protocol is a proprietary format and is not ASCII Hence a terminal program cannot be used to communicate with the SM70 Page 8 MRK D 0017 V Aeroqual SM70 User Guide aeroaqual 5 Calibration The SM70 can be fully calibrated by replacing the old sensor board with a replacement SM70 sensor board with a multi point calibration and new calibration certificate Alternatively a SM70 baseline cali
20. tion please refer to the standard Product Warranty Policy as published on the Aeroqual website at www aeroqual com Aeroqual operates a policy of continuous development Aeroqual reserves the right to make changes and improvements to any of the products described in this document without prior notice Under no circumstances shall Aeroqual be responsible for any loss of data or income or any special incidental consequential or indirect damages howsoever caused The contents of this document are provided as is Except as required by applicable law no warranties of any kind either express or implied including but not limited to the implied warranties of merchantability and fitness for a particular purpose are made in relation to the accuracy reliability or contents of this document Aeroqual reserves the right to revise this document or withdraw it at any time without prior notice The availability of particular products may vary by region Please check with the Aeroqual dealer nearest to you Statements of Compliance The Aeroqual SM70 complies with EN 50082 1 1997 The Aeroqual SM70 complies with EN 50081 1 1992 The Aeroqual SM70 complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 these devices may not cause harmful interference and 2 these devices must accept any interference received including interference that may cause undesired operation Page 13 MRK D 0017 V1 Aeroqual SM7
21. w o ae oem ooo 008 157 w o 8 7 2 off on off on 25 mm on off off on 0 060 0 150 3 off off off on 0 070 0 175 5 on on on off 0 080 0 200 4 off on on off 0 090 0 225 5 5 7 0 38 120 on off on off 0 100 0 250 8 off off on off off on off off on off off off off off off off Factory default setting 4 400 00 50 00 50 00 00 7 10 12 14 16 20 25 4 3 2 Wiring to the relay If you require the SM70 be used to control a mains powered device you will need to include a separate mains rated relay Mains equipment should only be wired by a certified electrician Open up the SM70 enclosure and remove the PC board as detailed in section 6 Turn over the PCB board so that the underside is visible as shown below Using the screw connector on the PC board wire the desired external device to either the normally open or normally closed contacts as required for your application and firmware version Feed the cable through the supplied cable gland to your external devices Page 7 MRK D 0017 V1 Aeroqual SM70 User Guide aeroaqual Diagram showing a method of connecting a SM70 to a mains powered device 1 lt h n gt _ _ gt of vi tet OF 4 HINI A WOLU 1 F 00 a EXTERNAL DEVICE Za5uncN IX RX A E r l RS232 RS485 RELAY POKER e g O3 generator Pai L Insert jumpe
22. yte the data stream s check sum that makes the command stream total sum is zero Section 2 Page 16 MRK D 0017 V1 Aeroqual SM70 User Guide qaeroaual Protocol command values are in hexdecimals not ASCII BASE 0x55 header command used for receiver command SENSOR 0xAA_ header command used for monitor reply DATA_REPORT 0x10 regular data report command DATA_REQUEST 0x1A heater data request report command SENSOR_INFO 0xFB parameters upload command RESERVED 0x00 the byte not been used for information transfer CHECKSUM a data stream s check sum that makes the command stream total sum is zero DISPLAY display format can be following 0x01 1 digit int 3 decimal points eg 0 500 ppm 0x02 2 digits int 2 decimal points eg 12 20 ppm 0x03 3 digits int 1 decimal point eg 126 8 ppm 0x04 4 digits int no decimal point eg 2888 ppm STATUS1 8 bits monitor and sensor status information SSO bO 00 sensor working fine SS1 b1 01 sensor failure 11 sensor aging Reserved b2 Reserved not been used Reserved2 b3 eserved not been used Reserved3 b4 Reserved not been used Reserved4 b5 Reserved not been used Reserved5 b6 Reserved not been used Reserved6 b7 Reserved not been used Section 3 Data value format representation The floating point data values use IEEE754 32 bits floating point little ending representation They are DATA1 DATA2 Section 4 Data transfer mechan
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