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The EnviroMon System User Manual R5.06

1. a a a a To get the values for 3 channels for the oldest five readings value no 1000 x 3 3000 no of values 5x 3 15 The response would contain the following data ae value 3000 msb value for reading 1 channel 1 value 3000 Isb Ca value 3001 value for reading 1 channel 2 eel value 3002 value for reading 1 channel 3 value 3003 value for reading 2 channel 1 CO value 3004 value for reading 2 channel 1 29 30 value 3015 value for reading 5 channel 3 Messages Computer messages Logger messages Converter lights Dialler messages see dialler instructions Logger messages Logger start up sequence When the logger is first powered on it displays the following messages Selftest EnviroMon EL008 V14 03 10 98 Batch RMH48 Addr 1 Baud57600 The first message appears a couple of seconds after the logger powers up The logger then carries out an internal self test The second message tells you the software version 14 and the software date 03 10 98 The final message tells you the logger batch number RMH48 its address 1 and the baud rate for the serial link to the computer 57600 If the logger displays no messages at all or says ROM fail or RAM fail the logger should be returned to Pico for repair There are several other messages which may appear at start up Unit details corrupt This message means that the batch number and computer link settings are not set or have become damaged Yo
2. e itis possible to transfer data to other applications for further analysis e the computer need not be on the same site as the logger see remote data access Once data is stored on the computer it can be processed in a number of ways e aspreadsheet style display which can be transferred to a spreadsheet for further analysis e a graph of readings against time over periods from hours to years e aperiod summary which shows the minimum maximum and average reading for each sensor during the period together with the number of alarm events and the total alarm duration e alist of alarm events it is possible to add notes about action taken on alarm It is possible to specify a backup path for files this can either be a diskette or a network drive If you specify a diskette the backup should be done manually using the backup option on the file menu If you specify a network drive you can also request an automatic backup each time you exit from the program It is also possible to specify that old files should be deleted after a period of time the options are e never e delete after a month e delete after a quarter e delete after a year If you are collecting data every minute this will require about 6Megabytes per year Most computers have at least 1000 Megabytes of disk space so it is not usually necessary to delete old data Remote data collection It is possible to access logger data remotely using either a radio modem or a te
3. cables you will need a crimp tool available from Pico to attach the plugs to the cables e install a fixed cable around the site with an EL009 telephone wall socket at each point where a converter or logger is to be installed then connect the logger and converters to the wall sockets using 5 metre EL003 network cables e install a fixed cable directly between converters This is necessary when devices are fitted with screw terminal blocks ie alarm relay dialler network junction box or the IP65 converter for use in wet environments In the case of the IP65 converter the network and sensor cables enter the enclosure through IP65 cable glands they are then attached to the converter using screw terminal blocks The logger is connected to the network cable using an EL009 wall socket Small network For small networks where all converters are within a 5 metres of each other it is possible to put together a network using only standard network cables The logger and converters each have two network sockets By connecting a network cable from one unit to the next you can build up a complete network ELO03 cable ELOO1 Converters ELO008 Logger Larger network For larger networks the same approach may be used The network cables must be made up onsite to the length required using cable WI001 and connecting the CO018 connectors to the cable using a crimp tool In some circumstances it might be more convenient to use a spur ca
4. the remaining columns show the selected sensors The scroll bar on the right selects the range of times to display The following options buttons are available bml channels bmp select the sensors to display bml options bmp Spreadsheet options specify whether to display individual readings or average minimum and maximum for a period If you select a range of readings you can use the following buttons bml disk bmp write the readings to a disk file bml clipboar bmp write the readings to the clipboard You can select a range in one of three ways If all of the readings that you want to select are on the screen point the mouse at the first reading e press and hold down the left mouse button e drag the mouse to the last reading the selected readings will be highlighted as you go e release the left mouse button If the readings are a long way apart e point the mouse at first reading click the left mouse button the first reading will be highlighted scroll down to the last reading point at the last reading press down the shift key and click the left mouse button If you wish to select all of the readings for one day e point the mouse at any reading during the required day e click the left mouse button the reading will be highlighted e click on the select day icon Event View When you select the View Event menu option the computer opens a new window like this EnviroMon for Windows i Sensor
5. It is then possible to access the two separate configurations by entering either emw leeds ini or emw brighton ini How to use a dial up modem The EnviroMon logger is designed for easy access via a dial up modem The logger connects to one modem using an EL033 modem adapter The computer connects directly to the other modem The computer can then call the logger each time the EnviroMon for Windows program is run When using a dial up modem it is necessary to set the link parameters for the logger so that it will do the following things operate at the maximum data rate supported by the modem see below enable disable the modem at times when it should accept calls Most modems have an internal buffer and so it is possible to transfer data from the logger to the modem at full speed 57 600 baud even if the modem can only send data at lower speed for example 14 400 baud over the telephone link If you set the logger to operate at 57 600 baud and it does not seem to work try reducing the data rate to 9 600 baud It is also necessary to tell the PC what number to dial to establish a connection to the logger and to specify whether to keep the link to the logger active until all data is transferred or until the end of the EnviroMon for Windows session If the link is kept active after the data is transferred it is possible to monitor the current readings and to cancel alarms We recommend setting up the logger configuration using a direct conn
6. Programs e Select Pico Technology e Select EnviroMon for Windows The first time you start up the software it will offer you three choices e alook at the overview section of the help file e a guided tour of the configuration e start the configuration If you select the guided tour the computer will take you through the basics of setting up the system explaining what each step involves Alternatively you can follow the instructions below If you are not in the configuration control panel already e select Settings from the Main menu e select Configuration from the Settings menu You should now be at the configuration control panel If you have already configured the system and wish to start again e click on Reset e when the computer asks you to confirm Click on Clear Once you are back at the configuration control panel it is time to set the sampling rate e Click on General Click on Sampling set the Minutes per Reading field to the required value Press OK Press OK Now we find out what equipment is connected e Click on Equipment Set the serial port field to the one that the logger is connected to eg COM2 Click on Converters Click on Auto configure a box will appear and will show you the status of the auto configure process After a few seconds this will disappear and the computer should display the details of your converter in the large box Click on OK e Click on OK Now we need to specify where the sensor
7. Temperature Sensors The sensor is a steel tube about 5cm long It has a 5 metre cable and there is a sensor connector at the other end of the cable The sensor should be located where you wish to measure the temperature eg in a refrigerator tank or room The connector fits into one of the three sensor sockets on a converter The sensors can be attached either directly to the converter or using an extension cable up to 100 metres long The sensor adapter EL020 provides an easy way of extending sensor cables The standard sensor extension cable EL032 is 5 metres long Standard sensor cables are not flexible at low temperatures if it is necessary to move the cables they should be warmed up before flexing EL031 Light Sensor The EL031 Light Sensor connects to a standard temperature converter ELO01 using the supplied sensor extension cable The EL031 is intended to give a qualitative measure of light intensity It has a logarithmic response so it is useful at a wide range of light levels It responds both to visible and to infra red light When the logger is configured for use with a light sensor the display on the logger reports a value between 0 and 100 0 means complete darkness 100 means full sunlight Repeatability between units is 5 If you require accurate rather than qualitative measurements or a specified range of wavelengths and can identify a suitable voltage output sensor you can use it with the ELO16 or EL036 conve
8. The data part of an LF_GET_READING response for an LB_CURRENT request is as follows most significant upper byte of current reading for sensor 1 value 1 lsb least significant lower byte of current reading for sensor 1 The data part of an LF_GET_BLOCK response for an LB_LALARM_ACTIVE request is as follows 1 alarm 1 Alarm status for sensor 1 0 alarm off 1 alarm on Get readings Before attempting to get stored readings from the logger it is necessary to read the following three blocks LB_NO_OF_READINGS LB_FIRST_READING LB_MAX_READINGS If a logger is configured for three sensors an is left running for an hour collecting one reading every 5 minutes these values will be as follows No of readings 12 First reading 0 Max readings 5000 If it is left until 6000 readings have been collected the values will be No of readings 5000 First reading 1000 Max readings 5000 The reading buffer contains 15 000 two byte values Numbers below 32511 are error codes numbers between 32511 and 32767 are data values The reading buffer is accessed by asking for a sequence of values from the buffer You can ask for up to 125 values to be returned at once this improves the data transfer rate After 6000 readings have been taken the buffer will contain the following values Value number Reading number Channel number 4001 4001 4001 4002 2999 5000 The reading request contains the following data
9. and out mains in and two mains out The unit is supplied with a stopper in each cable gland for unused cable glands the stopper can be left in place The alarm relay can be connected to the network using either telephone connectors or screw terminals if you wish to use telephone connectors the cable glands should be removed The relay has two sets of contacts Each set of contacts has one normally closed contact and one normally open contact There are two spare pairs of screw terminals which are unconnected these can be used to connect neutral and earth wires Safety note If you are using the alarm relay to control mains electricity the unit should be installed by a qualified electrician The following diagram shows how to connect a single mains device for example a siren so that it is turned on when an alarm occurs Mains Out Mains In If you connect a green lamp to the normally closed contact and a red lamp and or siren to the normally open contact the green light will stay on when everything is OK and the red light will come on when a temperature is out of range Neutral Red Light g Mains In Green Light EL018 Dialer adapter battery backup The EnviroMon system is designed to operate with the Gardiner Technology Gardtec dialer or the Menvier Security SD1 Speech dialer The system can also work with other dialers by connecting them via the ELO11 alarm relay unit The dialer can be programmed with a li
10. cable provided Plug the power supply into the mains and connect it to the logger connect the first converter to the logger using the network cable Press the Start button Win95 and above Select Programs Select Pico Technology Select Set Converter Address Select the serial port eg COM2 that you connected the logger to Select the address that you wish to use for this converter Press the Program button Wait until the computer reports that the converter has been programmed For EL026 humidity converters see Calibrating humidity Converters Unplug the converter Repeat this procedure for each converter See also Identifying the equipment Connecting up the equipment Calibrating humidity Converters If you are not using humidity converters you can skip this section The EnviroMon humidity measuring system is made up of two parts the EL026 converter and the EL030 sensor These can be connected together using a cable up to 25 metres long The EL030 sensor has some calibration information written on the base before you use an EL026 and EL030 together you should use the Converter Address program to write this calibration information into the EL026 To do this you should connect up the equipment and run the Change Converter Address program as per the instructions for setting the converter address then you should proceed as follows Select the serial port eg COM2 that you connected the logger to Select the address that you wish to
11. for example during working hours eg 9 to 5 Monday to Friday It may be desirable to have an alarm on sensor failure but not on temperature out of range This can be done by leaving the alarm enabled and setting a wide temperature range If the temperature normally goes out of range for short periods it is possible to hold off delay alarms for a specified period For example if a freezer periodically goes through a defrost cycle lasting 15 minutes an alarm holdoff of 20 minutes would prevent the defrost cycle from causing alarms The high and low threshold disable and holdoff can be set individually for each sensor The logger contains a built in audible alarm if the area where the logger is mounted is continuously manned the built in alarm is sufficient If the logger area is not continuously manned it may be necessary to use a remote audible alarm either in the workarea or in a security control room This can be linked to the logger using the network cable If it is necessary to respond to alarms when the site is unmanned the alarm dialer module can make telephone calls to several numbers and deliver a voice message What should happen on power failure For some applications it is not necessary to collect or store data if mains power fails If continuous operation during mains failure is required there are two options e fit 4xAA batteries into the logger This provides several hour s backup but the batteries must be ch
12. gmt_start UNS32 gmt_end UNS16 minutes_per_reading UNSS8 spare 40 READING_HEADER Sensor numbers This is a list of the sensor numbers for which data is recorded There is a 16 bit value for each sensor If for example the file contains data for sensors 1 3 and 4 sensor 2 is disabled reading _header no_of_sensors would be set to 3 and the sensor number list would contain 1 3 and 4 There would be three sensor reading entries for each reading Reading data typedef struct INT16 temperature UNS8 status SENSOR_READING Each reading is made up of a block of 3 byte SENSOR_READING records one for each entry in the sensor number table Date time code The date time code is made up of the time in minutes and the day number Day 1 is the 1 January 1980 Date time code day number 1440 time EMWEVENT LOG This file contains details of the events that have occurred since the log was created parameters out of range equipment failures etc Dynamic Data Exchange DDE This is a convenient method of transferring the current set of readings to other applications Data is transferred approximately once per second Data items are identified by three keywords Application Topic and Item The keywords accepted by EnviroMon are Application EMW Topic Current Item Name parameter name Value the current value Units the units Alarm the alarm status Each DDE request returns a list of values for each p
13. in DIN standard 0 3 C tenth DIN 0 03 C and even higher accuracies e Type K thermocouples work over a range 270 to 1370 C they are available in a wide variety of probes from a large number of suppliers There is a standard connector so thermocouples from different suppliers are interchangeable Typical accuracy is 0 5 C at ambient temperature and error increases as the temperature goes away from ambient Thermistors The standard ELO15 and EL039 EnviroMon temperature sensors are precision thermistors sealed in a stainless steel cylinder The sensor is fitted with a 5 metre cable and a connector which plugs straight into an EL001 temperature converter Each EL001 can accept three sensor inputs The sensor cable can be extended to a maximum of about 100 metres this will introduce an error of less than 0 1C in the temperature measurement At temperatures below OC the cable may become brittle and must not be flexed At temperatures over 70C the cable may become soft and easily damaged The ELO15 and EL039 temperature sensors have an accuracy of 0 1C over 0 to 30C and 0 2C over 20 to 50C Outside this range we recommend the use of Pt100 or Type K sensors For localised temperature measurement for example measuring the temperature of a critical component in a control system Pico can also supply thermistor sensors as bare beads approx 1mm diameter Type K thermocouples The CM004 Type K thermocouple conditioner supports the ful
14. power failure Data storage and reporting Where should equipment be placed How to validate the system Security Who will be responsible for the system For a small configuration one person can easily install the system and operate it on a day to day basis Larger systems are often installed by external contractors but it is essential to have someone within the company who will be responsible for maintaining the system once it is installed This person should be involved at the earliest stages in the planning of the system so that they understand how it works and can easily make small changes to the system as requirements change What do you want to measure EnviroMon takes readings from a number of sensors distributed around a site These sensors are connected to converters that transform the analogue signals from the sensor into digital signals these digital signals can then be transmitted reliably and accurately to the logger The type of sensor and converter depends on what you wish to measure Temperature EnviroMon provides full support for three different temperature measuring techniques it can also work with other techniques if required e Precision thermistors are relatively low cost and they are highly accurate 0 1 C but only over a relatively limited temperature range for example 40 to 30 C or 0 to 70 C e Pt100 platinum resistance PRT sensors cover a wider temperature range 200 to 650 C and are available
15. use for this converter Press the Program button Wait until the computer reports that the converter has been programmed The computer will turn on the Calibration button press this button now Enter the lowest figure normally about 0 into the first box Enter the highest figure normally about 100 into the second box Press the Program button Wait until the computer reports that the converter has been programmed Unplug the converter See also Setting converter addresses Connecting up the equipment To gain experience with the system we recommend connecting up a small system with just a single converter next to the computer Once you are confident that you understand how it works you can install the complete system in the correct place Logger to PC Connect the logger to a serial port on the computer using the serial cable It may be necessary to use the D9 to D25 adapter as well Power Plug the mains adapter into a mains socket and then plug the DC connector into the logger Network Plug one end of the network cable into the logger then plug the other end into one of the network sockets labelled Net on the converter Sensor Plug the temperature sensor into the first sensor socket labelled Ch1 on the converter You are now ready to start the software and then configure the system See also Identifying equipment Configuring the system Configuring the system To run the software e Press the Start button e Select
16. user is able to check the current temperatures e Note events the user is able to edit details of events e Inspect data the user is able to look at historical data e Full the user has access to all parts of the system including configuration NOTE when adding the first user ALWAYS select Full clearance otherwise you will not be able to get back into the configuration to change it Enabled It is not possible to remove details of old users as the system may need to refer to this when someone consults historical data instead the enabled box should be un checked This will remove the person from the list of active users Password Dialog This dialog appears when it is necessary to confirm a user s security clearance User This is a list of active users select your name from the list Password Enter your password here note that it will not be displayed as you type Chapter 7 Dialogs for normal operation Preferences dialogs Colours Sounds Language Monitor dialogs Select parameters Graph dialogs Select parameters Graph options Print Spreadsheet dialogs Select parameters Spreadsheet options Print Event dialogs Event Event options Print Select parameters dialog This dialog is used to select the parameters which appear on the view that it was started from The area on the left shows the parameters that are available the selected parameters are highlighted To select or deselect an item point at the ite
17. 2 5 volts EnviroMon can be programmed to convert the voltages into some other units for example pressure and display them in those units The EL036 accepts two signal conditioner modules for example the CM004 Pt100 conditioner described above There is a wide range of signal conditioning modules that are tailored to work with specific sensors and also general purpose conditioners to work with 4 20mA or 0 5V transmitters See Measurement made easy for more details of signal conditioners The EL037 has three inputs that can be configured to measure 2 5Volts 10Volts and 4 20mA EnviroMon can be programmed to convert the measurements into some other units for example pressure and display them in those units Bear in mind when selecting sensors that EnviroMon is a low power system hence it can carry on running when mains fails Where possible select low power sensors If it is essential to use a sensor that requires a lot of power for example gas sensors you should consider either providing a local power supply for the EL036 that it is connected to or using the E1018 battery backup unit What action is required on alarms EnviroMon can be configured to sound an alarm if a temperature goes out of range high or low or if a sensor fails For many applications it is not necessary to have alarms for all sensors so the alarm function for any sensor can be disabled It is also possible to enable the alarm only during certain time ranges
18. 4320 samples e Divide the number of samples for the longest time interval 4320 by the maximum number of samples 1500 giving approx 3 minutes e Sampling at five minutes would allow a margin for error bank holidays forgetting to download the data etc Now you have all of the information available you are ready to start e if possible connect together the logger the converters and sensors next to the computer e start the EnviroMon for Windows program e the computer will display the configuration panel press the Expert button the configuration expert will guide you through the steps required to set up the system How to use multiple loggers If the loggers are to be connected directly to the computer or are to be connected via a radio modem link it is possible to access all of the loggers at the same time so they can all be part of the same configuration Just check the Use multiple loggers box and you can then enter the details for a list of loggers For loggers on a telephone link it is not possible to call all of the loggers at the same time so it is necessary to create a separate configuration for each logger Each configuration should have a different data path After configuring the first logger rename the configuration file envimon ini as say leeds ini You will find the envimon ini file in the PICO directory Next create a configuration for the next logger and rename the new envimon ini as say brighton ini
19. If you check this box the logger will keep its modem permanently enabled so that it will always answer an incoming call This is OK if the logger modem is on a separate phone line If you leave this box unchecked you can specify a time range in which the modem will answer calls This means that the modem can be connected to a phone line which is used for voice calls during the day but which is enabled for modem access to the logger outside working hours Answer telephone between These two fields specify the time range for which the modem is to be enabled when Logger will always answer phone is unchecked Logger List Dialog This dialog appears when you enable support for multiple loggers At the left is a list of loggers at the right are buttons to add edit or remove loggers The add and edit buttons open up a logger dialog Logger Options Dialog This dialog contains controls for optional equipment connected to the logger Printer The logger supports two types or printer These printers connect to the serial port on the logger each requires a different adapter The Pico part numbers for the adapters are as follows e Epson FX300 A4 page printer adapter EL024 e Datac HP1100 compact tally roll adapter EL023 The logger can print two report formats e current the values right now for all of the sensors e summary average minimum and maximum for a period with total time and number of occurrences for out of range and f
20. Loggerx Details of a logger x logger number Loggerx Converter y Details of a converter x logger y converter General General information Holdoff Details of current holdoffs Events Details of active events Graph1 Details of current graph Spread 1 Details for current spreadsheet EventView1 Details of the event view Temperature Temperature display information Alarm Alarm options Site Site information Preferences Colours etc General NoOfLoggers 1 The number of loggers in this configuration NoOfSensors 10 The number of sensors in this configuration Configured Yes Set to Yes once the system is configured until then the EnviroMon program goes straight to the configuration menu DataPath d pico envimon This specifies where data is to be stored BackupPath a This specifies where a backup copy of data is to be stored AutoBackup Yes This specifies whether the program should automatically create a new backup file each time you exit the program Session 0 This specifies how the EnviroMon for Windows program operates the link to the logger It is important when operating a telephone link as it is usually desirable to remain connected for as short a period as possible 0 connect at start up and remain connected 1 connect at start up and disconnect once data is transferred 2 do not connect at start up DeleteAfter 0 This specifies how long data files are to be reta
21. The EnviroMon System User Manual R5 06 General Information Chapter 1 Introduction Essential reading for new users Chapter 2 Configuration planning what to buy what features to use Chapter 3 Equipment the modules that make up a system Chapter 4 Getting started how to set up a starter kit EnviroMon for Windows software Chapter 5 Views Displaying current and recorded data Chapter 6 Configuration dialogs user input during configuration Chapter 7 Normal dialogs user input during normal operation Chapter 8 How to use all of those clever features Software drivers Chapter 9 Drivers for customers who want to write their own software Technical information Chapter 10 Troubleshooting and maintenance Chapter 11 File formats files used by EnviroMon for Windows Chapter 12 Communication protocols driving the logger directly Chapter 13 Messages from the logger Chapter 1 Introduction Introduction The System The Equipment The Software Online Help Contacting Pico Legal info Introduction This user manual contains nearly two hundred pages of online information providing comprehensive information about all aspects of the EnviroMon system Please take a few minutes to read this introduction as this will give you a brief overview of how the system works and where to find additional information The System The EnviroMon system is designed for long term recording of data from a number of locations The system offe
22. This could be caused by e incorrect logger configuration e faulty or disconnected cabling e faulty converter e faulty logger See Converter Lights for information on interpreting the flashing light on the converter If none of the converters are working disconnect all of them and connect one converter directly to the logger If this fails the logger is probably faulty If it succeeds try disconnecting sections of the network until it starts working If more than one converter is not working and all of the malfunctioning converters are all on the same section of the network replace the converter nearest the logger If this cures the problem the converter is faulty otherwise the network cable leading to the nearest converter is probably faulty If just one converter is not working do the following tests e disconnect the network from the logger and connect the malfunctioning converter directly to the logger e connect another converter at the same location as the malfunctioning converter Sensor fail or incorrect reading This could be caused by e sensor cable damaged or disconnected e sensor connector dirty e interaction with faulty sensor on same converter e faulty converter If all of the sensors on one converter are misbehaving replace the converter with another unit If this cures the problem the converter is faulty If not disconnect all of the sensors and plug in one sensor at a time Note for this fault it may ta
23. a file and read the file into the other application Current data There are two ways to transfer the current set of values to another application e use Dynamic Data Exchange DDE e write the current readings to a file see CurrentFile parameter in Envimon ini How to connect to a logger via a network If you have an IP network of computers you can connect loggers to one or more computers and then access them remotely via the network You can configure the loggers monitor current readings and download stored data via the network using EnviroMon for Windows To do this you first install an agent program on each of the remote computers that will be connected to loggers then run EnviroMon for Windows on the local computer There are currently agents for the following operating systems Windows 3 11 Windows 95 98 NT 2000 Linux Red Hat 5 2 6 Before starting you need to find out the network names of the computers that you wish to connect to If a computer is called fred you can check that the local computer can talk to them by typing in ping fred To run an agent program on Windows 95 open a DOS box and type in the following command c pico emagnt32 exe c2 11051 b57600 c2 is for COM2 Change the number as appropriate The parameters in brackets are optional The i option sets the IP port number use 1051 unless that clashes with some other service The b option sets the baud rate The computer will start the program minimised If yo
24. anged from time to time e install an ELO18 dialer battery backup module this contains a lead acid battery that will give 24 hours operation in the event of mains failure It is continuously kept charged while mains power is present Data storage and Reporting Data storage and reporting requirements vary enormously depending on the application There are three main options e monitor temperatures use the logger only for immediate temperature monitoring and alarms e print out reports at regular intervals directly from the logger e store the data on computer The logger can be connected to either a tally roll printer or to an Epson A4 paper printer It can print the current temperatures and can also print out a periodic summary which shows the minimum maximum and average readings together with the number of alarms and the total alarm duration This approach is useful if there is not space for a computer or if staff are not familiar with computers These reports can be printed out either at regular intervals or on request If a computer is used data is transferred to the computer automatically each time the user runs the EnviroMon program on the computer Storing data on the computer has a number of advantages e data can easily be backed up for added security e if the computer already has access to a printer it is not necessary to buy a separate printer for the logger e the computer software offers a wider range of report formats
25. arameter To read the current values into Excel type the following command into a spreadsheet cell EMWl Current Value To read the current values into Quattro Pro type in the following command into a cell DDELINK EMWl Current Value Most application programming languages C Delphi Visual Basic provide tools to make DDE requests from other applications Chapter 12 Communication protocols IP Networking Enviromon logger protocol IP network operation If two computers are connected using an IP network ethernet dial up or whatever it is possible to connect a logger to one computer and then access it from the other It is necessary to run an Agent program on the computer connected to the logger Agents are available for all versions of Windows and for Linux See the EnviroMon for Windows help file for information about setting up a logger in this way Once the logger is configured and the agent is running any number of other computers can then access the logger either using EnviroMon or accessing the logger directly The program emclient c demonstrates how to do this The agent accepts a UDP message that contains a header followed by a normal EnviroMon serial protocol message The header contains the following information typedef enum SF_VERSION SF_FORWARD SKT_FUNCTION typedef struct unsigned short function unsigned short sequence unsigned short timeout SKT_HEADER e function must be SF_FORWARD e sequence
26. as been active in hours and minutes In some installations the temperature may go out of range during a defrost cycle The logger is programmed not to sound the alarm until a temperature stays out of range for more than a pre specified period the same time as a normal defrost interval Ifa sensor is out of range but the logger is programmed not to sound the alarm yet or if the logger has sounded the alarm and a user has cancelled the alarm the logger shows a black rectangle in the bottom right hand corner of the display EL005 Logger without display The EL005 logger has no display or buttons and so it can only be used with a computer The EL005 does not have an internal alarm if you need an audible alarm connect an EL006 audible alarm unit to the network Connections The logger has four sockets on one end e around DC power socket the cable from the mains adapter supplied with the logger plugs in here e two square network sockets e a D shaped serial port socket which connects either to a computer serial port or to a printer using the serial port adapter supplied The logger also has a red light LED next to the serial port Batteries The EL005 logger has internal re chargeable batteries These batteries are kept topped up whilst mains power is available and will keep the system running for up to 24 hours during a mains power failure The ELO18 dialer adapter battery backup can provide power to the system for much longer peri
27. ault conditions These reports can be requested manually or can be printed at fixed time intervals Alarm dialer The logger can be connected to a dialer unit when an alarm occurs the dialer calls a specified number and delivers a recorded message The dialer connects to the logger using an ELO18 dialer interface In addition to providing a link to the dialer the EL018 provides the following functions e a larger backup battery with mains charger e detection of mains failure e detection of network failure the logger is no longer in contact with the EL018 On detection of mains or network failure the interface can be programmed to activate the alarm dialer after a specified period of time Converter List Dialog This dialog shows a list of converters connected to the selected logger There are also controls to add or remove converters or to automatically detect the converters connected to the logger Converter list The converter list shows the address and type of each of the converters attached to the logger Each converter must have a different address The address is written on the top right corner of the converter You can use the change converter address program to alter the address of a converter It is not necessary to add devices which do not have sensors eg EL006 remote alarms however the auto detect function will add them to the list as a check that they are linked correctly to the logger Note Each EL016 voltage conv
28. ay If this button is checked the alarm time range will be active even on the holidays specified using the holidays dialog If it is unchecked the alarm time range will be disabled on holidays Start This is the start time for the range It must be specified in the format HH MM for example 09 00 End This is the start time for the range It must be specified in the format HH MM for example 17 00 Holidays dialog This dialog is used to specify a list of dates of up to twelve holidays It is then possible to disable some or all alarm time ranges on the specified holidays This could be used to disable sensors in processing rather than storage areas on days when a processing plant is shut down for a holiday Note that it is not necessary to enter any details if you do not need to make special arrangements for holidays The dates must be entered in the format DDMmmYY for example 25Dec99 Summer Time Dialog In countries that are a long way from the equator it is normal to adjust the clocks by one hour at the start and end of summer this has different names in different countries for example daylight saving time or British Summer Time You can enter the start and end times for summer time for the next few years then the logger will automatically adjust its clock on the specified days NOTE In the Northern hemisphere the start and end times will be in pairs each pair for the same year in the Southern hemisphere the start of sum
29. ble to link some of the connectors The network junction box EL021 can be used to add spurs to the network ELO08 Logger ELO21 Network junction box ELOO1 Converters ELOO1 Converter Fixed network For the largest networks ie a large number of converters or converters which are widely spaced the most satisfactory installation is a fixed network Place an EL009 wall socket or EL021 network junction box at each location where a converter or logger is required and use a standard 5 metre cable to connect the socket to the logger or converter Fixed cable Wall sockets ELOO1 Converters ELOO8 Logger Screw terminal connections The following EnviroMon devices are fitted with screw terminal blocks ELO11 Alarm Relay ELO17 IP65 Converter ELO018 Dialer Battery Backup Unit EL021 Network Junction Box The screw terminal block connects the device to the network instead of using the telephone sockets The following diagram shows the connections linking the device to an EL009 wall socket ELOOS Wall mount socket You should connect adjacent units using four core cable eg Pico WI003 Connect terminal 1 to terminal 1 terminal 2 to terminal 2 et cetera The following table shows the signals associated with each connection Connection Signal 1 Data A 2 Data B 3 Power 12 18V 4 Ground Temperature Sensors A sensor is required at each location where you wish to measure temperatures EL015 EL029
30. cable This is a white oval cable about five metres long with telephone style connectors at both ends Note that network connectors are slightly larger than sensor connectors Network connectors have six slots in the end although only the middle four slots are fitted with gold contacts Converter The converter changes the electrical signal from a sensor into a digital message that is transmitted to the logger There are several types of converter the most common is the ELO01 temperature converter The EL001 is a black plastic soap box with two square network sockets at one end and three sensor sockets at the other end Each converter has an address a number between 1 and 15 which is used to identify the converter The address appears on the top left hand corner of the converter Temperature sensor Pico supplies several different types of temperature sensor the most common are the ELO15 and the EL039 The ELO15 or EL039 temperature sensor is a stainless steel tube 6mm diameter and 50mm long It is fitted with a white oval cable about five metres long with a telephone style connector on the other end The sensor connector is slightly smaller than the network connector it has four small slots each containing a gold contact unlike the network connector which has an empty slot at each end There is a clear plastic label on the cable next to the connector this specifies the type of sensor eg ELO15 the batch number and the sen
31. cify for the EnviroMon agent The normal setting is 1051 You might need to use a different value if 1051 clashes with some other application or if you wish to connect multiple loggers to the same computer Address This option is used on a multi logger radio link Each logger has a unique address between 1 and 255 all loggers receive all messages from the computer but only respond to messages containing their address Enable support for multiple loggers Most systems require only a single logger so the computer normally only presents a dialog for a single logger Even if you wish to use multiple loggers it may be more practical to set up a separate configuration for each logger that way the data for each logger is kept separate This option is only useful if you wish to combine the data from multiple loggers If you check this box the computer replaces this dialog with the logger list dialog with it you can add edit or remove the details for loggers Converters This button gives access to a list of converters attached to this logger Options This button gives access to the logger options dialog which controls optional equipment that can be connected directly to the logger Telephone This button accesses the logger phone dialog which enables you to specify how the dial up link to the logger is to operate Set link This button programs the connection settings into the logger Loggers are supplied ready configured for direct conn
32. company that manufactures gas meters might be required to prove that the meters were calibrated at a particular temperature Calibration using equipment calibrated against national standards is the most common option This can be carried out by a test house the manufacturer or distributor or by the user if the required equipment is available The sanity check test should be carried out by the user at intervals determined by the application the hostility of the environment and the importance of accurate readings Unless the tests are carried out by Pico the converter and sensor should be tested together Temperature sensor EnviroMon temperature sensors are supplied sealed in stainless steel tubes and are largely unaffected by their environment If the temperature is cycled repeatedly while the sensor is immersed or in a damp environment small amounts of water may be drawn into the sensor this may cause a rapid increase in the measured temperature If low or medium temperature sensors are exposed to high temperatures greater than 120C the temperature reading may be permanently affected Calibration or checking using ice and or boiling water is not recommended unless the user has a lot of experience with the required procedures EnviroMon sensors can be compared with a calibrated reference sensor in any of the following ways e insert both sensors in a bath of liquid which is being stirred continuously e insert both senso
33. crease buttons to obtain the correct year press the green button to accept repeat this process for the month day hour and minute Printing Reports To print out reports you will need to connect the logger to either an Epson dot matrix printer or a tally roll printer via the serial cable and adaptor To print a report e press the Menu mode button to display a menu option e press the red button until the report you require is displayed e press the green button to accept For a midnight to midnight report you can select what day you want to print a report for you can usually go back two or three days If your logger is connected to a computer there are many more facilities available to you See section 5 Software Features The Display Under normal operation when all is well the display will show sequentially the name of each sensor and the temperature for that sensor The information for each sensor will be displayed for about 2 seconds If the temperature for a sensor is within range the display will look like this Temperature 15 45 degC If a temperature goes out of range or a sensor fails the logger will sound an alarm and will show alternately the following two displays for the sensor Temperature 15 45 gt 18 00 Temperature Active 00 05 The first display shows you what is wrong the temperature 15 45 C is above the allowed maximum 18 C The second display shows you how long the problem h
34. e 40 to 85 C Accuracy 0 2 C 0 to 70 C 0 3 C rest of range Humidity Range Oto 100 Accuracy 2 0 to 90 The EL026 converter contains calibration information specific to the EL030 humidity sensor Please ensure that the sensor is used only with the converter that it was supplied with Each unit in the pair has a label on the base which shows the serial number of the sensor Each EL001 or EL026 converter has an address a number between 1 and 15 If you wish to connect more than one converter to your logger each converter must have a different address If you have two converters with the same address install the software on your computer and then use the Change converter address program to change the address of one of the converters The EL026 is designed to work with logger version 13 and above If when you power on the logger it reports a logger version of 12 please contact Pico Technology The sensor must be situated away from direct contact with water and away from sunlight Temporary exposure to either is unlikely to damage the unit but the unit will give incorrect readings while it remains exposed The sensor can be attached to the wall either using adhesive foam or by removing the cover and using two screws to attach the unit to the wall EL016 Voltage converter The EL016 voltage converter accepts eight voltage inputs Each input can accept a voltage in the range 0 to 2 5 volts The EnviroMon network al
35. e system is operational you can disconnect the computer and control the logger using the built in buttons and display Connections Both types of logger have four sockets on the base e around DC power socket the cable from the mains adaptor supplied with the logger plugs in here e two square network sockets e a D shaped serial port socket which connects either to a computer serial port or to a printer using the serial port adaptor supplied DC Power Network Serial port Batteries The logger has a battery compartment for 4xAA batteries these batteries keep the system running during a mains power failure for up to 24 hours The ELO18 dialer adapter battery backup can provide power to the system for much longer periods in the event of mains failure You should change the batteries at least once a year and after a mains power failure of more than a few minutes The unit switches to battery power as soon as the mains power goes off If the system is not in use you should remove the batteries otherwise they will discharge Mounting The logger is intended to be wall mounted with the cables coming out of the bottom of the unit The ELO13 mounting bracket can be screwed to the wall the logger then clips into the bracket Bracket A Logger 2s Screws Cables Logger Display The logger with display is a large black box with an LCD display and three buttons red blue and green Under normal operation these bu
36. e of sensor See troubleshooting for information on how to identify the cause Active 02 05 This indicates how long the previously displayed fault has been active in this case two hours and five minutes Computer messages Logger not found This message indicates that the computer could not make contact with the logger See Troubleshooting Logger configuration appears to be incorrect This message indicates that the logger configuration is not the same as the configuration in the computer If you have more than one logger check that you have connected the correct logger and that you are using the correct settings in the computer You can prevent this message from recurring by re writing the logger configuration press Program in the configuration panel Operation failed If the dialog box also says Get Logger Version this message indicates that the computer could not make contact with the logger See Troubleshooting If the dialog box also says Halt the Logger you will probably find that the operation will succeed if you try again straight away If the dialog says Write Text contact Pico for a computer software upgrade Alternatively shorten all of your sensor names 15 characters or less Converter lights When a converter is first connected to the network or the logger is first powered up the light on the converter starts flashing approximately four times per second When the converter receives a message of any kind from t
37. ection then changing to modem operation To change to modem operation connect the logger to the modem port and then go into the configuration menu select File then Configuraton select Equipment change the connection type to via telephone modem change the baud rate to 9600 baud if required select Telephone enter the telephone number specify whether the computer is to call the logger automatically specify any limits on the time that the logger may answer phone calls press the Set Link button on the logger dialog disconnect power from the logger and remove batteries if fitted reconnect the power and if required check that the logger says BAUD 9600 How to measure parameters other than temperatures The EL016 and EL037 voltage converters and the EL036 signal conditioner converter can be used to accept inputs from a wide range of sensors For sensors that the EnviroMon system does not know about it is necessary to specify how the voltages from the sensor are to be converted to the parameter to be measured this process is called scaling See the Signal conditioner help file for more information How to transfer data to other applications Historical data If you wish to transfer historical data to another applications first open a spreadsheet view and select the range of data that you want to transfer then use one of the following methods copy the data into the clipboard and then paste it into another application e write the data to
38. ection to the computer so you do not need to use this option for loggers intended for direct connection This option is ONLY used when you have changed the connection mode Connect the logger directly to the port that you have specified then press the button and wait for it to complete The programming is automatic Note The logger must be powered down and restarted to activate the new link parameters Logger Phone Dialog This dialog enables you to specify the details of the telephone link to the logger Connect at startup This option specifies whether the computer should start a connection to the logger each time EnviroMon for Windows starts up The options are e Don t connect the logger is connected directly to the serial port on the computer You can connect up to nine loggers to the same computer in this way each to a separate serial port e Disconnect after data transfer the computer dials the logger at start up but releases the link as soon as all of the new data has been transferred from the logger e Remain connected the computer is connected to a radio modem as is the logger Up to 250 loggers may be connected each logger must have a separate address You can manually connect or disconnect at any time this option simply controls the automatic connection at start up Telephone This field contains the telephone number that the computer should use to establish a link to the logger Logger will always answer phone
39. ed in the summary if you select a different sensor the display will be updated prints out a summary for all sensors for the current period The Statistics box shows the number of readings during the period for this parameter and the minimum maximum and average for the period If the readings go out of range during the period the computer displays a separate figure for the average of the in range values ie it excludes the values that are out of range from the average calculation This is useful if the parameter only goes out of range under known circumstances for example during a defrost cycle on a chiller The in range average appears in brackets on the printed report The Problems box shows the number of times and total time the value has been out of range There are separate figures for above range below range and sensor fail Spreadsheet View When you select the View Spreadsheet menu option the computer opens a new window like this BHEE Ei Date Time Chi Ch2 CH3 Ch4 Ch5 16 pr97 03 12 21 79 21 79 21 79 21 55 21 75 16 pr97 03 13 21 79 21 79 21 79 21 54 21 74 16 pr97 03 14 21 77 21 77 21 78 21 54 21 74 16 pr97 03 15 21 77 21 77 21 77 21 53 21 73 16 pr97 03 16 21 77 21 77 21 76 21 53 21 72 16 pr97 03 17 21 75 21 76 21 75 21 51 21 70 16 pr97 03 18 21 75 21 75 21 75 21 50 21 70 B 16 pr97 03 19 21 74 21 74 21 74 21 50 21 69 a There is one line for each reading The first two columns show the time and date
40. ed switch To attach an external microswitch make a hole in the case insert the cable through the hole and strap the cable round the central pillar Attach the wires to connectors marked a For additional security use a Tyrap to attach the cable to the two holes marked c on the left of the connector block Sensor connections If you need to connect standard sensors directly to an IP65 converter or flexible cable sensors to standard converters proceed as follows To connect the standard sensor to the IP6S5converter hold the cable vertically with the plug upwards with the clip side toward you cut off the sensor connector remove the two right hand side wires use the two left hand side wires normally red and blue To connect flexible cable sensors to standard converters you will need to attach a sensor connector to a length of 4 core flat cable then connect the two wires from the sensor to the left hand two wires on the length of 4 core cable Use thes Wires Cut these off EL020 sensor adapter The EL020 sensor adaptor has two sensor sockets back to back If it is necessary to extend a sensor cable it is easy to do this by making up a cable of the required length with plugs at each end then using the EL020 to attach one end of this cable to the sensor cable C0017AV1001 Extension up to 100 metres EL020 Sensor adaptor FLO15 Senso Converters The converter is the means by which the sensor signal is converted t
41. er option to view stored data Select Help then Contents to get the help file contents page Select Help then Index to get an index for the help file e Select Help then Guided tour for a guided tour of the functions used in day to day operation See also Monitor view Displaying graphs Displaying a graph To look at the graph you first need to display the monitor view Next you should take the following steps e Select View from the main menu e Select Graph from the View menu The computer will display a graph showing all data recorded so far See also Graph view EL014 EL019 Printer If you do not wish to connect a computer to the logger you can connect it directly to a printer The printer connects to the serial port on the logger using the adapter provided EnviroMon has been tested with the following types of printer Printer partnumber Adapter part number Printer Paper format ELO14 EL023 Datac 1100 40 column tally roll ELO19 EL024 Epson LX100 80 column A4 paper Chapter 5 Views Views Monitor view Graph view Summary view Spreadsheet view Event view Views EnviroMon for Windows can display data in five different formats called views There are five types of view a monitor display which shows current temperatures and alarm state a graph showing the temperature over a period of time a summary the statistics and error information for a period a spreadsheet detailed temperature information in a format wh
42. eral panel dialogs General panel Summer time Site information Directories Alarm Alarm time range Holidays Temperature Sampling Security dialogs Password User list User Equipment Loggers Logger list Logger Logger telephone settings Logger options Equipment Converters Converter list Add Converter Locations of sensors Sensor list Sensor Configuration Panel Dialog This dialog is the main control panel for configuring the system For a first time installation you should use each of the buttons in the sequence that they appear General Equipment Locations Program Exit If you later wish to make adjustments to the system you can go straight to the function that you wish to change then use the Program option to write the new configuration to the logger Note the logger must be connected before you use the Program option or the auto configure option in the Converters dialog part of Loggers the remaining options can be used without the logger connected General This option leads to the general settings panel there are buttons to set the sampling interval temperature units and other system wide parameters Security This option is only necessary if you wish to restrict access to the configuration parts of the software It enables you define a list of persons is authorised to use the system Equipment This option works in two modes For a single logger system it displays a logger dialog which allows you to s
43. erter requires three addresses so it appears three times in the list Add Press this button to add a new converter to the logger this will open up the converter dialog Remove Highlight one of the converters in the list then press this button to remove it Auto detect Press this button to automatically update the list of converters connected to the logger Note the logger must be connected before you select this option Converter Dialog This dialog is used to enter the details for a new converter Converter type This is the type of converter Note that IP65 converters are electrically identical to the standard form and the system does not distinguish between them Even if you select the IP65 format it will be converted to the standard format in reports Address This is the number which appears in a box on the top right of the converter Each converter connected to the logger must have a different address If you have two converters with the same address you should use the Change converter address program to change the address of one of the converters If you make a mistake and enter the same converter twice the computer will warn you when you try to program the logger Sensor List Dialog This dialog shows a list of the sensors connected to all loggers and converters in the system There are also controls to add or edit the details for sensors Sensor list This list has a line for each sensor It shows the address of the
44. et can have either 9 or 25 pins if the socket has 25 pins you will need to use a D9 to D25 adapter Most computers have only two serial ports these are called COM1 and COM72 The ports are not normally labelled but it is usually safe to experiment to find out which is which D9 to D25 adapter This is supplied with the EnviroMon system it is only needed if your computer has a 25 pin serial port Serial cable This is a cream coloured round cable about 2 metres long with D shaped 9 pin connector at each end The male end the one with pins sticking out connects to the logger the female end attaches to the serial port on the computer Mains adapter This is a black plastic block with a built in mains plug It has a black two core cable that goes to a round DC connector which plugs into the power socket on the logger Logger The logger collects data and stores it until the PC is ready to receive it There are two types of logger the EL005 grey box and the EL008 black box with a display The logger has the following connectors e round DC connector to mains adapter e D9 female connector to computer e two square telephone style connectors for network The two network connectors are joined internally so you can use either socket or both When you connect power to the EL008 it shows some version information on the display When you connect power to the EL005 the red light comes on for a few seconds and then starts flashing Network
45. everal loggers independently each with their own data files To specify that data files will be stored on network drive G in a directory called Pico type in G pico Backup directory This is where files will be copied when a backup takes place This could be either a diskette drive or a network directory If you specify a diskette drive the computer asks you to insert a blank formatted diskette before each backup User List Dialog This dialog is accessed from the main Configuration Panel It is used to add new users or edit the details of existing users It is not usually necessary to specify users if only one person will be using the system If you do add any users the computer will ask for a password if you select the Configuration option from the main menu User list This shows details for each of the users who were or are authorised to use the system An x next to the name indicates that they are no longer active Add Press this button to add a new user Edit Click on one of the names in the user list when the name is highlighted press the Edit button to edit the details for this user User Dialog This dialog is used to enter the details for a new or existing user Name The users full name Initials The user s initials Password Password the computer will ask for this each time somebody enters a secure part of the program Clearance level This controls what the user can do The options are Check the
46. figure the system Before you run the program here is a checklist of things that you need to do so that you have all of the information necessary to get the system going You can use the Print button on the File menu above to get a paper copy of these instructions e draw a plan showing the locations where you wish to place sensors e mark on it the locations where you want to place converters each temperature converter can connect to three sensors e read the address written in the top right of each converter and write one of these converter addresses on each converter on the plan Note each converter must have a different address If you have more than one converter with the same address you must use the Change converter address program to change the address of one of the converters BEFORE attempting to configure the system Write down a table with the following details for each sensor e the name of the location the minimum and maximum value the holdoff time if any to allow for defrost cycles the converter address of the converter that you wish to connect it to the channel number on the converter 1 to 3 that you will use Choose a sampling interval as follows e divide the maximum number of readingss 15 000 by the number of sensors that you wish to use 10 sensors will give you a maximum of 1500 samples e work out the maximum time between computer downloads For example over a week end would be three days 3 x 24 x 60
47. he light is turned on when the problem is detected There are two green lights one for mains power and one for battery power When the mains is on the battery is kept charged up continuously and both the mains and the battery lights remain on There are three groups of screw terminals on the ELO18 these serve the following purpose e backup battery e speech dialer e network you can use the phone connector sockets if you prefer When using the ELO18 the mains adapter plugs into the ELO18 and not the logger the logger is powered from the ELO18 via the network cable The connectors and lights on the EL018 are laid out as follows OOO cro Hains OK nA EC oo Bipa W T ELA Dialler adaptovbattory backup S01 Wice diala When it is wired into the system it will look like this EL018 dialker adapter SD1 speech dialler Mains adaptor battery backup ELONE Logger Chapter 4 Getting started Identifying the equipment Installing the software Setting converter addresses Calibrating humidity converters Connecting the equipment Configuring the system Looking at current readings Displaying a graph Identifying the equipment You will need the following equipment in order to set up a simple test system Computer The computer must be running Windows 3 1 95 98 ME NT or 2000 It must have at least one spare serial port Serial port This is a D shaped male with pins sticking out socket on the back of your computer The sock
48. he logger the light stops flashing Once the logger is configured and starts asking for readings from the converters the light will flash three times EL001 or twice EL026 every four or five seconds
49. his is the minimum value for the acceptable range of the sensor Leave this field blank if you do not wish to set a lower value for this sensor Maximum value This is the maximum value for the acceptable range of the sensor Leave this field blank if you do not wish to set an upper value for this sensor Holdoff The holdoff specifies the period in minutes between the value going out of range and the alarm sounding This is useful if the value occasionally goes out of range for short periods for example the temperature of a freezer during a defrost cycle The holdoff should be set to the minimum time interval required to prevent spurious alarms it should be set to zero if an immediate alarm is required It should be at least four times the sampling interval so with a sample time of five minutes it should be at least 20 minutes General Panel Dialog This panel gives access to a number of dialogs which control the overall settings of the system parameters which are not related to a specific logger or sensor Sampling This button gives access to the sampling dialog which sets the time interval between recorded readings Temperature This button gives access to the temperature dialog which selects the units and number of decimal places for temperature measurements Alarm This button gives access to the alarm dialog which specifies options for alarm handling Time ranges repeat interval etc Site This button gives access to the si
50. his routine fills the array current with the current reading for each sensor The return value is the number of sensors The returned values are integers If the sensor value has two decimal places a reading of 24 51 will be returned as 2451 If no data is available the value will be set to 32767 C For Borland and Watcom C Visual C version 1 5 or lower use the implib program supplied with your compiler to produce an import library emwxx lib from emwxx dll where xx 16 or 32 as appropriate The command is Implib emwxx lib emw dll For Microsoft Visual C versions 2 4 and 5 Microsoft no longer supply implib Furthermore the names used in these versions of C are decorated there is a prefix which indicates how many bytes are transferred to the routine as parameters As a result the C names do not match the names in the DLL The Microsoft tools to alias decorated to undecorated names do not appear to work so it is therefore necessary to use ordinal linking linking by number rather than name To find the ordinal numbers for the DLL that you are using type in DUMPBIN exports emw32 dl11 The ordinal numbers and decorated names are entered into emw32 def then the following command generates a lib file Lib def emw32 def Once you have created a lib file the following steps are then required to use the drivers in your program include the emwxx 1ib in your project Include the file emwd11 h in the C source fi
51. ich can be copied to a clipboard an event display which shows each of the occasions on which an out of range or sensor fail has occurred The monitor view is displayed when you start the program the other views can be selected from the monitor view menu Monitor View When you start EnviroMon for Windows the computer displays the monitor view which looks like this Settings View Help chi 20 48 C ch2 20 48 c cH3 20 48 C ch4 21 91 c ch5 20 46 c ch6 20 48 c ch 7 20 47 c ch8 20 51 c chs 20 49 c This view has a menu which gives access to other views and a line of information for each active sensor At the left of each line is an indicator lamp which changes colour depending of the state of the sensor bml normal bmp The sensor value is within range bml warning bmp the sensor value is currently out of range but has not been out of range long enough to raise an alarm bml active bmp the sensor is in an alarm state use the mouse to click on the lamp this will cancel the alarm bml acknowl bmp the sensor is an alarm state but the alarm has been cancelled Next to each lamp is the sensor name and the current temperature The temperature is updated every few seconds The monitor view has a menu you can use the menu to e select what sensors appear on the monitor view e activate other views e configure the system e specify various options colours sounds When the monitor view is running yo
52. ined for The options are 0 indefinitely 1 a month 2 three months 3 a year MinutesPerReading 10 The time interval in minutes between readings SampleMode 0 Indicates how to take readings 0 when the logger memory is full wrap 1 when the logger memory is full stop 2 stop when max readings samples have been recorded MaxReadings 1000 The number of readings to take when SampleMode is zero CurrentFile If you specify a filename here EnviroMon will write the current readings to a text file with this name every sample interval This can be used to transfer the data to another application For example CurrentFile Current txt Footer If you wish to replace the footer on reports with text of your own you can add this parameter specifying an alternative footer For example Footer Joe s frozen foods RefreshDelay 0 When accessing the logger via an IP network you can reduce network traffic by setting this parameter It sets the time delay in seconds between monitor updates A value of 60 would mean that the monitor display would be update only once per minute Holdoff Events Do not change these two sections Loggerx There is one Loggerx section for each logger x is the logger number Connection 0 This specifies how the logger is connected to the computer 0 direct 1 via radio modem 2 via telephone modem BaudRate 9600 If present this over rides the speed of the link to the logger P
53. ion Standard converters are not waterproof if you wish to place converters in an environment where they will be exposed to moisture you should use an IP65 converter EL017 IP65 Temperature converter The IP65 converter is identical to the standard converter but is housed in an IP65 case the IP rating is a measure of its resistance to water and dust The case is fitted with five cable glands the cable glands are for two network cables in and out and three sensor cables The unit is supplied with stoppers in each cable gland the stoppers can be left in place to seal unused cable glands The cables are connected to screw terminals as indicated in the following diagram When using standard sensors with IP65 converters there are two important considerations e Standard sensor cables are fitted with telephone connectors it is necessary to cut off the plugs to use them with an IP65 converter Before cutting off the plugs please consult sensor connections to find out which two of the four wires must be connected to the screw terminals e Standard sensor cables are elliptical and have a ridge down one side If the unit is to be exposed to large amounts of water it may be necessary to improve the seal between the cable gland and the sensor cable This can easily be done by putting adhesive lined heat shrink round the cable where it goes through the cable gland EL026 Temperature Humidity Converter Specification Temperature Rang
54. is a unique sequence number for each request The response will contain the same sequence number This gives protection against lost delayed or transposed packets e timeout is the time in milliseconds to wait for any response before giving up For everything except configuration messages 500ms is sufficient EnviroMon Logger protocol The computer normally uses 57 600 baud for a direct link to a logger and at 9 600 over a modem link Data is transmitted with 8 data bits two stop bits no parity No flow control lines are used All messages to and from the logger have the following format 1 length This is the total length of the message including 3 byte header and 1 byte checksum The maximum message length is 254 bytes multi logger radio modem network 3 function 0 LF_GET_BLOCK 19 LF_GET_READING_VALUES Other functions are available This is the data part of the message 4 n checksum Calculate the SUM of all preceding bytes Checksum is 0xDE SUM The computer sends a request to the logger and then the logger sends a response for most functions within 200ms Get Block When the computer wants to get a block of data from the logger it sends an LF_GET_BLOCK request An LF_GET_BLOCK request contains two bytes of data 1 Block ID 0 LB_VERSION 3 LB_CURRENT 4 LB_NO_OF_ READINGS 10 LB_FIRST_READING 11 LB_ MAX_READINGS 14 LB_ALARM_ACTIVE You probably won t need this We can supply more information if required
55. is option is checked all spreadsheet view settings are saved automatically when you close the event view Show individual aggregated readings When Show individual readings is checked the spreadsheet view shows each individual reading When it is cleared the computer displays results which are aggregates min max average of the readings for the time interval specified below and the controls in the Show aggregated readings box are enabled If you select more than one of average minimum and maximum the computer displays the corresponding number of columns for each sensor in the spreadsheet and adds a heading max min ave to each column Time interval per row This specifes the time interval between each of the rows on the spreadsheet If for example the logger was set to take a reading every minute and you set the time interval per row to 60 each row will be the min max average of 60 readings Chapter 8 How to configure a system use multiple loggers access the logger by telephone measure parameters other than temperatures transfer data to other applications access the logger via a network How to configure a system Setting up a small EnviroMon system is very easy For more information or if you have not yet decided upon the configuration please consult the EnviroMon Equipment help file Even if you do not want to use a computer for day to day operation you will need to connect a computer in order to con
56. ke some time for the logger to return to displaying the correct temperature You can accelerate the process by restarting the logger after connecting each sensor If all sensors except one seem to function on their own re connect all of the sensors except the one that malfunctions Maintenance Logger The logger requires little maintenance If the logger has alkaline batteries fitted you should replace them annually or after a power outage of more than a couple of hours Check the battery compartment for signs of leakage If you use the audible alarm within the logger you should test it once per year by simulating a fault for example by disconnecting it on a sensor with alarms enabled Converter For a standard converter disconnect the unit and inspect the connectors for signs of corrosion and for deposits of dust or debris For IP65 converters check annually inside the box for signs of condensation or corrosion If condensation is a problem it is usually caused by damp air drawn into the box during cooling and dry air being expelled as the box warms up This can be eliminated by fitting a PVC breather pipe about a metre long to one of the cable glands Remote alarm Check connectors for signs of corrosion dust or debris re connect the unit and simulate a fault to check the audible alarm is working Alarm Dialer The Menvier dialer loses its telephone numbers and messages if the power goes off If this happens the unit
57. l temperature range for type K It is fitted with a standard miniature thermocouple connector Pt100 platinum resistance The CMO005 Pt100 conditioner covers the range 200 to 350C It has four screw terminal connectors and can be used with two three or four wire sensors Humidity EnviroMon can measure humidity using the EL031 temperature and humidity sensor and EL026 converter The converter contains calibration information for the sensor so the units are supplied as a pair The EL031 contains both a temperature sensor and a humidity sensor The humidity sensor has a calibrated accuracy of 2 Light The EL031 light sensor is intended to provide a qualitative measure of light level It connects to one of the channels of an EL001 converter The sensor gives a log scaled reading between 0 an 100 where 0 is complete darkness and 100 is full sunlight For more accurate light measurement see measurement made easy Door open closed The EL029 door switch can be connected to one of the channels of an EL001 converter The logger reports whether the door is open or closed and any statistics show the percentage of time the door was open during any period Other parameters There are three general purpose converters for use with the EnviroMon system e ELO16 8 channel voltage converter e EL036 2 channel signal conditioner converter e EL037 3 channel voltage 4 20mA converter The EL016 has eight inputs that can measure signals between 0 and
58. le height bml shorter bmp shrink the current display height to half size so that more is displayed above and below bml down bmp move a whole display down The remaining vertical controls are bml clipboar bmp copy the graph to the clipboard Pint print the graph bml channels bmp select the channels to display on the graph bml options bmp specify the options for the graph bml help bmp enter the help info for the graph view If you move the mouse cursor onto the graph part of the screen the computer will display the temperature and time at the current cursor position Summary View When you select the View Summary menu option the computer opens a new window like this 8 1 Period Sensor Start 00 00 O06Sep99 Tic End 23 59 06Sep39 SAAD rm Statistics Problems Total time Number of No of readings 144 eran aa out of range np hours mins 13 96 Above 70 00 _ Maximum 27 65 Average 18 20 Below 20 00 In range ave 18 20 Sensor fail The period box contains the time interval for the summary You can either type in a start and end time and date or you can use the buttons to alter the range The controls are as follows bml left bmp move a quarter period earlier bml taller bmp halve the current period bml shorter bmp use twice the current period bml right bmp move a quarter period later The sensor box shows which sensor is to be display
59. le s of your program See emwdltes c for an example of a simple Windows program C C programs can access all versions of the driver If emwdll h is included in a C program the PREF1 macro expands to extern C this disables name mangling or decoration as Microsoft call it and enables C routines to make calls to the driver routines using C headers Delphi emwpr dpr is a complete program which opens the driver and reads values from channel 1 The file emwfm inc contains a set of procedure prototypes that you can include into your programs Excel The easiest way to get data into Excel is to use the EnviroMon for Windows program either by using the clipboard or copying text to a file or using DDE However you can also write an Excel macro which calls emwxx d1l to read in a set of data values The Excel Macro language is similar to Visual Basic The example emwxx XLS reads in the current values from channels 1 and 2 into cells B1 B2 Use 16 bit driver for Excel version 5 and the 32 bit driver for Excel version 7 and above Note that it is usually necessary to copy the DLL file to your windows system directory Visual Basic Version 3 16 bits The DRIVERS WIN16 sub directory contains a simple Visual Basic program ADC10 mak EMW16 MAK EMW16 FRM Note that it is usually necessary to copy the DLL file to your windows system directory Version 4 and 5 32 bits The DRIVERS WIN3 2 sub directory contain
60. lephone modem Radio modem One computer can maintain radio modem links to several remote loggers Because EnviroMon requires very little power the remote loggers can easily operate using a battery that is kept charged using a solar panel The logger has built in power saving features to turn off the radio modem when it is not required Telephone modem The EnviroMon software running on a PC can use a modem to make a telephone call to a remote logger then extract data from the logger and terminate the connection The logger can be configured to permit the modem to answer telephone calls only during a narrow time range This means for example that the logger data can be downloaded at night using a telephone line that is allocated for other uses during the day Where should equipment be placed Each EnviroMon converter turns sensor inputs into digital signals these digital signals can be transmitted quite long distances through the network cable Converters should be a maximum of 400 metres from the logger The logger can therefore be placed wherever information is required for example in an office area and the converters can be placed near where parameters are to be measured Thermistor sensors are supplied with a 5 metre cable that can be extended up to 100 metres Alarm relay and dialer modules are best placed close to the logger to minimise the risk that a break in the network could prevent the logger from operating the relay o
61. loride Logger Loggers do not require re calibration Converter Converters contain no adjustable parts They are designed for high reliablilty and contain built in components to allow for changes over time variations due to temperature etc Chapter 11 File formats etc EnviroMon file formats program files envimon ini psc scaling files See signal conditioner help file for more information rdg emwevent log Dynamic Data Exchange DDE Program files The following program files make up EnviroMon for Windows e emw exe main program file e emw dll language specific information 044 for English e emw hlp help file for english EnviroMon for Windows makes no changes to any files in the Windows directory or the registry nor does it require any installed drivers envimon ini The majority of configuration information is held in a file called envimon ini If multiple configurations are required this can be done by putting each configuration in a separate file then specifying on the command line which file to use For example to use the oxford ini file the command line is emw oxford ini Note that for multiple configurations the data path must be different for each configuration The detailed information below is intended for information only Where possible we recommend using the EnviroMon for Windows program to make changes to the settings Envimon ini contains the following sections
62. lows a maximum of 3 values per converter so the EL016 appears on the network as three separate addresses The following table shows the pin connections and channel numbers for an ELO16 Address A is the first address B is the second address etc An EL016 with a starting address of 4 would appear on the network as addresses A 4 B 5 and C 6 Address Channel Pin ANWDWwWwWsyppy NP WNrR WN eR BANAT W OR OWN Ground The ELO16 is designed to work with logger version 15 and above If when you power on the logger it reports a lower logger version please contact Pico Technology It is possible to display the voltages as other parameters see the PSC file section of the signal conditioner help file for more information EL036 Signal conditioner converter The EL036 signal conditioner accepts two signal conditioners Alternatively it can be used for two voltage inputs in the range 2 5 volts The following signal conditioners may be used Conditioner CMO004 Pt100 platinum resistance Temperature CMO005 Type K Thermocouple Temperature CMO007 4 20mA powered Various CMO008 4 20mA isolated Various CMO15 10V bridge Pressure Load CMO19 Current transformer AC current power The EL036 is fitted with a DC power connector As long as the current used by all signal conditioners on the network is less than about 50mA it is not necessary to attach a power supply It will usually only be necessary to attach a power supply with CM007 conditioner
63. m with the mouse and double click on it Group At the bottom is the group combo box You can use this to save and restore a number of named groups of parameters To save the current parameter selection as a group type in the group name and press Save Group To select a saved group open the combo box and double click on the requested group To modify an existing group make the changes to the parameter selection then type in the group name and press Save Group To remove an existing group de select all parameters type in the group name and press Save Group On the graph options dialog you can specify that parameters should be divided into a number of separate graphs one for each group Print dialog This dialog appears when you press a print button on one of the views Printer At the top is a combo box with the name of the default printer You can select a different printer if you wish Setup Use this button to open a dialog with setup information specific to the selected printer Once all the details are correct press OK to start printing Graph options dialog This dialog enables you you change the options for the graph view Format This selects how the parameters will be displayed The options are e Automatic divide according to units e Allon same graph display all parameters on the same graph e Separate graphs draw a separate graph for each parameter e By group display a separate graph for each group see the
64. mer will be October 1997 and the end of summer will be March 1998 Site Dialog This dialog is used to specify the site name and maintenance contact This information appears on reports printed by the computer or by the logger Name This is the name of the site where the loggers are to be installed Maintenance This is for contact details for maintenance calls for example in a freezer monitoring application it might be the the name and telephone number for the refrigiration engineer Directories Dialog This dialog is used to set the directory names for data files and backup Data file cleanup This option can be used to clean up old data files when they are no longer required The options are e Keep files indefinitely never delete old data files e Delete after a month e Delete after three months e Delete after a year Auto backup If this option is checked the program automatically does a backup when you exit from the program This is probably more suitable for backup to a network drive than for backup to a diskette If this option is NOT checked you can still do backups using the Backup option on the file menu Data directory For most applications it can be left blank the data will be put into the same directory as the EnviroMon for Windows program It can be used either if you wish to place the data somewhere different for example on a network drive so that it can be backed up more easily or if you wish to operate s
65. n the system Note that the ELO16 appears as three 3 channel converters The first corresponds to channels 1 to 3 the second corresponds to channels 4 to 6 and the third is channels 7 and 8 there is no ninth channel Converter This displays the type of converter that the selected channel belongs to You cannot change this option Note that this option is replaced by the conditioner type if the converter is an EL036 Conditioner This box appears only if the converter is an EL036 is used to select the type of signal conditioner that is fitted to this channel Normally it will be set automatically to the correct value when the channel is selected Sensor This box is used to select the type of sensor You should select the channel and conditioner before specifying the sensor type Note The EL015 and EL039 temperature sensors are very similar Please check the label on the sensor before selecting the sensor type Alarm enable When the alarm is enabled for this sensor the alarm will sound when the value goes out of range or if the sensor or converter fails There are several options e Never the alarm is never enabled for this sensor Always the alarm is always enabled Time range 1 the alarm is enabled only during alarm time range 1 Time ranges 1 amp 2 the alarm is enabled only during alarm time ranges 1 and 2 several other combinations eg 1 and 3 See the alarm dialog for more details about alarm time ranges Minimum value T
66. name s End date time Event type Action taken nliMay9 17 03 Office 1 niiMay9 17 14 Sensor fail There are two or four lines of text for each event At the left is the start and end date time the end date time is omitted if the fault is still active Next to these are the sensor name and a description of the fault If Show action taken is enabled the action taken will be displayed beneath the fault description The scroll bar on the right selects the range of times to display To select a range of readings you can use the following buttons bml disk bmp write the events to a disk file bml clipboar bmp write the events to the clipboard Print print the events You can select a range in one of two ways If all of the readings that you want to select are on the screen point the mouse at the first event e press and hold down the left mouse button e drag the mouse to the last event the selected events will be highlighted as you go e release the left mouse button If the events are a long way apart point the mouse at first event click the left mouse button the first event will be highlighted scroll down to the last event point at the last event press down the shift key and click the left mouse button To edit the notes on action taken for an event point at the event with the mouse cursor and double click the left mouse button Chapter 6 Configuration dialogs Main control panel Configuration panel Gen
67. ndows Dynamic Link Library DLL for EnviroMon e EMW DLL is for use in 16 bit applications for example Visual Basic 3 Excel 5 Borland C 4 52 Visual C 1 5 Delphi 1 e EMW32 DLL is for use in 32 bit applications for example Visual Basic 4 5 etc Excel 7 Borland C 5 C Builder 3 and 4 Visual C 2 3 4 5 6 and Delphi 2 3 4 Please note that the drivers cannot be used at the same time as EnviroMon for Windows If it is necessary to access the current readings while EMW is running you should consider using Dynamic Data Exchange DDE Application Program Interface The application program interface API contains the following routines em_open open the driver em_get_sensors get the number of sensors em_get_current get current readings em_close close the driver The procedure for using the driver is as follows call em_open while you want to get readings call em_get_current process the current values end while call em_close em_open void em_open char ini_filename This routine opens the specified ini file normally ENVIMON IND and sets up a link to each of the loggers listed in the file The ini file should have been created and tested using EnviroMon for Windows em_close void em_close void This routine closes down and links to loggers and shuts down the driver em_get_sensors short em_get_current void This routine returns number of sensors em_get_current void em_get_current short current T
68. nfigure an EnviroMon system and to extract and analyse data from the system To run EnviroMon for Windows under Windows 95 e Press the Start button e Select Programs e Select Pico Technology e Select EnviroMon for Windows When you first start up the EnviroMon software the system is not yet configured so the computer displays the configuration panel The top button on the configuration panel selects a guided tour this will take you step by step through the process of setting up a simple system The final stage of configuring a system is to press the Program button this writes a configuration to the logger When you start up the EnviroMon software after the system has been configured the software transfers the readings stored in the logger to a data file on your computer and then displays the Monitor view which shows the current value of each measured parameter From the monitor view you can use the menu to get back to the configuration panel or to any of the reporting views Online Help Each dialog or view in EnviroMon for Windows has a link to the corresponding information in this help file e to get help from a dialog press the Help button e to get help from a view press the LA button Once in this help file you can find things in several ways e press the Contents button for a full list of the items covered in this file e press Index and then specify a keyword that describes what you are looking for e pre
69. o a number which is then sent to the logger Each converter has an address which identifies it to the logger Most converters are supplied with the address set to 1 The Change converter Address program can be used to change the address You can have up to 10 converters for each system using a mix of standard IP65 humidity or voltage converters EL001 Temperature converter The standard converter is a small black box There are three narrow sockets at one end these are for sensors At the other end there are two wide sockets for the network and a red light LED Converter address Sensor LED Sockets Network Sockets The red light flashes continuously immediately after the system is turned on Once the system is running normally the light goes out and thereafter flashes briefly each time the converter takes a reading Each converter has an address a number between 1 and 15 written on the top right hand corner Each converter on the network must have a different address which relates to its position on the network The converter will already be programmed with an address but you can change this through the installation software The three sockets are marked with channel numbers When you install the system the logging software will ask you for the address number and where each of the three sensors are which relate to that converter address For large networks it is best to make a plan of the layout before starting installat
70. ods in the event of mains failure You should check the batteries at least once a year and replace them if they cannot keep the logger going on standby for a satisfactory period The unit switches to battery power as soon as the mains power is disconnected so it will take some time for the batteries to recharge after a long period without mains power LED When the unit is first powered on the red light comes on continuously while it carries out a selftest If the unit is not configured the light flashes at a uniform rate once per second If the unit is configured the light shows traffic on the EnviroMon network this normally shows as a sequence of very short pulses every three to five seconds EL006 Remote alarm The remote alarm is useful when the room where the logger is located is not often occupied One or more remote alarms can be connected at any place along the network where staff will hear the audible alarm The remote alarm looks like a standard converter but has only the network sockets It is connected to the system using two network extension cables ELO11 Alarm relay The alarm relay can be used to turn on or off an electrical circuit when an alarm occurs This could for example be used to control a warning lamp or siren The relay contacts are rated at 250V at 1A the unit can therefore be used to control mains equipment The unit is supplied in an IP65 enclosure It is fitted with five cable glands network in
71. ort 1 For direct connections this specifies which serial port the logger is connected to For network connections it is the IP port number Server fermi This is the name of the computer that is connected to the logger when using IP networking to access the logger Telephone 01584 823263 This is the telephone number to dial when the connection type 2 is telephone modem Address 1 This is the logger address It is 1 for direct and telephone loggers but must be a different number for each logger connected by radio modem Printer 0 This specifes the type of printer connected to the logger The options are 0 no printer 1 Epson FX100 2 Datac tally roll PrintCurrent No This specifies whether the current values are to be printed at specified intervals PrintSummary No This specifies whether a summary report min max average is to be printed at specified interval CurrentMinutes 60 This is the time interval in minutes between print outs of the current values Summary Minutes 1440 This is the time interval in minutes between print outs of the summary report MainsFailMinutes 5 NetFailMinutes 5 NoOfConverters 7 AnswerStart 1260 AnswerEnd 1320 These specify the time range in decimal minutes 1260 means 21 00 during which the logger will enable a modem to answer telephone calls DialerPresent No This indicates whether the EL018 dialer battery backup module is connected If so the logger is unable to detect mains fail
72. ot sound again Latch alarms If latch alarms is enabled the alarm will carry on sounding even after the problem goes away This is useful if the logger will be left unattended for long periods and it is necessary to know about problems that occurred while the logger was unattended Repeat This specifies the time interval in minutes to wait after an alarm is acknowledged before activating the alarm again Set to None if no repeat is required Time range 1 3 These three buttons open the Time range dialog which is used to specify a time range during which alarms are to be active for example 09 00 17 00 Monday to Friday There are three time ranges and a sensor can be associated with any combination of ranges Once the details have been specified for a time range the details will be displayed next to the button Holidays This button opens the holiday dialog which can be used to specify the dates of up to 12 holidays Alarm time ranges can be disabled on the specified holidays if required Time range dialog This dialog is used to specify the details for one of the three Alarm time ranges The alarm for sensor can be enabled during any combination of these time ranges Note that it is not necessary to enter any details if you want to have alarms for all sensors either permanently active or permanently disabled Monday Sunday Check the box if the alarm time range is to be active on the specified day of the week Holid
73. pecify how the logger is connected to the computer There are also buttons to enter converter information and details about more advanced logger functions logger printer reporting alarm dialer etc For a multi logger system it displays the logger list dialog which enables you to add or edit details for a number of loggers Locations This option displays a menu of sensors attached to the system and provides options to add or edit sensors The sensor information includes the sensor name its address logger converter channel and the alarm limits for the sensor Program This option writes the configuration information to the logger The process is automatic just plug in the logger then press the button and wait for it to complete Logger Dialog This dialog enables you to specify how the logger is connected to the computer There are also buttons which give access to other dialogs for entry of converter details and advanced logger functions printing etc Connection This option specifies how the logger is connected The options are e Direct the logger is connected directly to the serial port on the computer You can connect up to nine loggers to the same computer in this way each to a separate serial port e Via telephone modem the logger is at a remote site the computer uses a modem to make a telephone call to the logger each time you request information Use the Telephone button to enter details of the link It is currentl
74. r dialer Security It is not possible to change the logger configuration from the logger keypad it is necessary to use a computer The EnviroMon for Windows software normally allows full access to both the data display and configuration functions If however you enter details of users you can specify which users are allowed to access the configuration menu How to validate the system It will be necessary to check that all parts of the system work this is essential once the system is installed and should be repeated at least yearly thereafter We recommend that you create a checklist of features to test while you are deciding what the configuration will be then you can use this checklist once the system is installed See the sections on Maintenance and Calibration for some ideas on testing If possible you should operate the system for a period of time to ensure that it is working correctly before you start to rely on the results When deciding on tests the test is as lifelike and as complete as possible For example if you are using a dialer you should simulate a fault then verify that the logger activates that dialer the dialer calls the correct telephone numbers and the persons called understand how to acknowledge the call Chapter 3 Equipment General Connectors Network Screw terminal network connections Sensors Thermistor temperature sensors Light sensor Door switch Converters EL001 Triple temperature con
75. readings taken immediately after you start the logger even if you do not download the information regularly e Stop after n same as Stop when full but the No of readings field below defines the number of readings to collect before stopping Note If you use Stop when full or Stop after n modes you can only restart the logger by disconnecting and reconnecting all power mains adapter and battery from the logger or by re programming it No of readings This specifies the number of readings to collect before stopping when in Stop after n mode Temperature Dialog This dialog is accessed from the General Panel and is used to specify the units for temperature measurements Fahrenheit or Celsius and the number of decimal places the number of digits after the decimal point for measurements Readings are normally displayed in Celsius with two decimal places for example 4 65 C Alarm Dialog This dialog is accessed from the General Panel and is used to specify the way in which alarms are to be handled Hysteresis If a temperature goes out of range it must go back in range by at least this much before the logger considers that the problem has gone away For example if the maximum temperature is 15 C and the hysteresis is 0 5 C the temperature must drop to 14 5 C before the problem is officially over If the temperature drops below 15 C but then goes above it again this will not be treated as a new problem and so the alarm will n
76. rs into a large block of metal which is insulated from its surroundings e bind the two sensors together with sellotape or elastic bands then wrap both sensors and some of the cable in several layers of bubble wrap Humidity sensor Humidity sensors contain a sensor element that absorbs both water and other chemicals The sensor element may quickly become inaccurate if it is exposed to chemicals Humidity is very strongly affected by temperature a 1C change difference in temperature between two sensors will produce a 2 5 difference in humidity reading It is therefore important to take the following precautions when calibrating e use a sealed container that is a small as possible e keep the air inside the container moving but mount the fan motor outside the box e insulate the container from conducted and from radiated head sources Humidity sensors can be checked by e comparing with a calibrated reference sensor e measuring the humidity above a saturated solution of a salt salt cell The two most commonly used salts are Lithium Chloride 11 3 and Sodium Choride 75 3 These two are preferred because the relative humidity for these two salts is virtually constant over a wide temperature range however you should note that Lithium Chloride undergoes a state change below 18C and calibration should be done above this temperature Please study the safety information available from a chemical supplier before considering using Lithium Ch
77. rs the following features permanent retention of recorded data on PC wide range of data display and analysis options easy to use software telephone style connections for easy installation modular system for easy upgrades a wide range of options to report alarm conditions support for remote data download modem GSM IP etc The Equipment The main components of an EnviroMon system are e acomputer e alogger e anumber of converters e alarm options The computer performs the following functions using the EnviroMon for Windows program e configuring the system e long term storage of data e display print and analysis of recorded data The computer talks to loggers using one of the following methods e using a direct connection to a local logger e via a telephone modem to a logger on a remote site e using a radio link for short range connection to sites not serviced by telephone e viaa GSM telephone for remote or mobile applications e via an IP network ideal for companies that already have a computer network The logger stores data continuously even when the computer is turned off or disconnected or the mains fails The logger connects to a number of converters that take measurements The converters can be up to 400 metres away from the logger and are connected using a single low cost telephone cable that forms a network between the logger and the converters The Software EnviroMon for Windows is used both to co
78. rters The EL031 is designed to work with logger version 13 and above If when you power on the logger it reports a logger version of 12 please contact Pico Technology Ltd The light sensor module can be attached to a wall using either adhesive foam or by removing the cover and using two screws to attach the unit to the wall EL029 Door Switch The EL029 door switch connects to a standard temperature converter EL001 using the supplied sensor extension cable When the logger is configured for use with a door switch the display on the logger reports either Open or Closed Graphs and summary reports show the percentage of each sampling period that the door is open 0 means permanently closed and 100 means permanently open The EL029 is designed to work with logger version 13 and above If when you power on the logger it reports a logger version 12 please contact Pico Technology The door switch module contains a built in reed switch which can be activated using a magnet attached to the door Alternatively if it is not practical to mount the door switch for operation with a magnet an external micro switch can be wired to the screw terminals inside the door switch module The door switch module can be attached to the wall using either adhesive foam or by removing the cover and using two screws to attach the unit to the wall b The black bar labelled b is the ideal location to place a magnet to activate the internal re
79. s max 20mA per conditioner and with CM015 if the bridge resistance is less than about 500 ohms The EL036 is designed to work with logger version 15 and above If when you power on the logger it reports a lower logger version please contact Pico Technology Click here for more information about signal conditioner modules EL037 Voltage 4 20mA converter The EL037 has four inputs however only three can be used with logger version 15 and earlier It also has an external power input this can be used to supply power perhaps 12 or 24V depending on requirements to the sensors Each input can be configured using jumpers to accept either 2 5V 10V or 4 20mA It can be configured for other voltage ranges and for resistance measurement with minor component changes The following diagram shows how to set a jumper to select the input type for a channel 4 20mA 2 T When measuring voltages or for measuring 4 20mA with the transmitter supplying the loop current the input is connected between In and GND The PWR connector can be used to supply power to the transmitter IN Power GND When measuring 4 20mA with the EL037 supplying loop current the transmitter should be connected like this EL008 Logger with Display The logger can be used with a computer or as a stand alone logger If you use a stand alone logger you will still need to connect it to a computer during the installation and set up process However once th
80. s are to be located by giving names to them Click on Locations Click on Add Type in a name for your sensor into the Name field Select the channel that you wish to use channel on your converter Select the type of sensor for example ELO15 Click on OK Now we need to program the calibration information into the logger e Click on Program e a box will appear and will show you the status of the auto configure process After a few seconds this will disappear if the programming completed successfully The configuration is complete we must exit from the program now so that the changes will take effect e Click on Exit e Click on OK If you have an EL008 logger the readings should appear on the display after 20 30 seconds If you have an EL005 you will need to restart the software to display the readings Looking at current readings To look at the current readings you should start the EnviroMon for Windows program e Press the Start button e Select Programs e Select Pico Technology e Select EnviroMon for Windows If it is more than a few minutes since you last ran the software the computer will display a box to show you how many readings it has transferred from the logger The computer next displays the monitor view a list of temperatures for each sensor From the monitor view you may find the following features useful Select Settings then Configuration to make changes to the configuration Select View then anoth
81. s the following files EMW32 VBP EMW32 BAS EMW32 FRM LabVIEW The routines described here were tested using LabVIEW for Windows 95 version 4 0 While it is possible to access all of the driver routines described earlier it is easier to use the special Labview access routines if only single readings are required The adc10 llb library in the DRIVERS WIN32 sub directory shows how to access these routines To use these routines copy emw 11b and emw32 dll to your LabVIEW user lib directory You will then a sub vi that demonstrates how to use the driver Chapter 10 Troubleshooting amp Maintenance Troubleshooting Maintenance Calibration Troubleshooting Logger won t talk to the computer This could be caused by incorrect port selected on computer e cable not connected or faulty e incorrect baud rate setting on logger e logger is set to print to tally roll printer To check the baud rate remove any batteries then disconnect and re connect the power to the logger During the start up sequence the logger displays the baud rate This should be 57600 for a direct connection to a computer and 9600 for a modem connection If the logger has been set to print to a tally roll printer connect the printer and wait until the logger prints out a report As soon as the report is finished disconnect the printer connect the logger to the computer and download the new configuration Logger won t talk to one or more converters
82. select parameters dialog Auto scale vertical axis When this box is checked the computer automatically adjusts the vertical scale to fit the data that is to be displayed If you press any of the vertical axis scaling buttons Auto scale is turned off automatically Save on exit When this box is checked the computer saves the setting when you exit from the graph view Colours dialog This option is used to specify the colours for background text et cetera It applies to graph and spreadsheet views To change a colour click on the colour button this will open up a colour selection dialog Background This is the colour for the background on graphs and for non selected readings on the spreadsheet Text This is the colour for text Grid This is the colour for the grid on graphs Selected This is the colour for the selected readings on the spreadsheet Trace colours The graph can display up to ten traces the ten buttons along the bottom of the dialog are the colours for each trace Sounds Dialog For some events EnviroMon can make a sound when the event occurs This dialog allows you to enable the sounds for each event Beep on each new reading This option is useful if there is a problem and you need to keep a close eye on it If you select a graph or spreadsheet view the computer beeps each time a new reading is added to the graph or spreadsheet Beep when lamp is pressed When there is an alarm the lamp on the monitor
83. sensor logger converter and channel and the sensor name If the sensor is disabled an X is displayed before the address Add To add a new sensor to the list press the Add button the computer will display the sensor dialog Edit To edit the details of an existing sensor click on the sensor that you wish to change the details for so that it is highlighted Then press the Edit button the computer will open up a sensor dialog Note there is no option to remove a sensor this is because there may still be historic data stored for a sensor even though the sensor has been removed Instead you should edit the sensor details and un check the enabled option Sensor Dialog This dialog is used to add or edit the details for a sensor There are three main groups of information the name the data source and the alarm details Name This can be any text that you wish to use to describe the sensor It can be up to 32 characters but only 16 characters will appear on the display of the logger Sensor enabled It is not possible to remove sensors as there may be historical data stored for them If a sensor is no longer in use it should be disabled by un checking this box the logger will then no longer collect data from it but historical data will still be available Channel This box specifies which converter and channel the sensor is connected to It contains a list of all the channels for converters connected to all of the loggers o
84. sor number The batch number and serial number are unique for each sensor and can be used as a reference number for calibration information See also Connecting the equipment Installing the software To install the software under Windows 3 1 e Insert the diskette into drive A Select File on the program manager menu Select Run Type in a setup Follow the installation instructions To run the software e Select the program manager e Select the Pico Technology program group e Double click on the EnviroMon for Windows icon To install the software under Windows 95 98 ME NT 2000 e Insert the CD ROM assume that the CD ROM is drive D Select Start Select Run Type in d setup Follow the installation instructions To run the software e Press the Start button e Select Programs e Select Pico Technology e Select EnviroMon for Windows Setting Converter Addresses Note you can skip this section if you have only one converter for example if you are using a starter kit If you are planning to use more than one converter each converter must have a different address Most converters has the address written on the top right hand corner If you have two converters with the same address you must change the converter addresses so that each converter has a unique address BEFORE you connect up the complete network To do this Install the software on your computer Connect the logger to a serial port on the computer using the
85. ss the button to move on to the next topic e press an underlined area to link to a related topic Legal info Licensing Both the demonstration and production versions of Enviromon for Windows may be copied and used freely on any number of computers Liability Pico Technology Limited does not accept responsibility for any loss or injury caused by the use of Pico Technology equipment or software It is the user s responsibility to ensure that the product is suitable for the user s application Trade marks Windows is a registered trademark of Microsoft Corporation Pico Technology Limited and EnviroMon are internationally registered trade marks Chapter 2 Configuration Configuration planning Who will be responsible for the system What do you want to measure What action is required on alarms What should happen on power failure Data storage and reporting Where should equipment be placed How to validate the system Security Configuration planning EnviroMon is a very flexible system It is made up of a number of separate modules you simply choose the modules that you need to do the job In addition there are several software options that can be configured so that the logger will do exactly what you want This section describes the points that you should consider when setting up an EnviroMon system Who will be responsible for the system What do you want to measure What action is required on alarms What should happen on
86. st of emergency telephone numbers When there is a problem the dialer calls each of the telephone numbers in turn until someone answers then it gives a message saying that there is a problem The dialler behaves in the same way as any normal extension and does not affect the normal operation of the telephone The dialer adapter serves three purposes e itcontrols the dialer e it provides power for the dialer and for the system e itcan provide battery backup for much longer periods than the logger s internal backup The dialer adapter is supplied in a grey plastic box with a clear lid The box has a large hole each side for cables There is space for a 1 2AH battery inside the box this will provide backup for 12 to 24 hours depending on the configuration Alternatively the unit can be connected to a car battery outside the box this could provide backup for many days Safety note When using an 1 2AH battery inside the box do not attempt to seal the cable holes as this may cause an explosive build up of gases inside the box The Speech Dialer can give three messages for different types of problem as follows e A temperature out of range or sensor fail e B mains fail for more than 5 minutes e C network fail for more than five minutes There is a separate wire between the adapter and the dialer for each problem if you do not wish to have calls made about a problem leave the wire unconnected There is a red light for each problem t
87. te dialog which accepts a site name and contact details for maintenance Summertime This button gives access to the summertime dialog which sets the dates for the start and end of summer time The logger can then automatically put its clock forward or back at the right time Directories This button gives access to the directories dialog which accepts directory names for data and backup files and controls cleanup of old data files Note Changes to the general settings are saved when you press the OK button If you press the Cancel button any changes are discarded Sampling Dialog This dialog is accessed from the General Panel and is used to specify when readings are to be recorded Minutes per reading This is time interval between recorded readings in the logger The logger measures and displays values from sensors continuously and then stores the average value at the intervals specified Mode This defines whether to fill the whole of the logger memory with readings and if so whether to stop when the logger is full There are three options e Wrap when full when the logger memory is full it starts overwriting the oldest readings This is the correct option when you wish to collect data continuously for long periods as the logger will then contain the most recent readings at any time e Stop when full the logger stops saving readings as soon as its memory is full This is useful if you wish to make sure that you do not lose the
88. ttons have the following functions e red Cancel Alarm e blue Hold Release e green Menu Mode When you power on the unit the LCD displays some details about the software If all is well the system is then operational and will continuously cycle through each of the sensors displaying the name and reading for two seconds followed by the date and time for two seconds By pressing the blue button you can hold the display on a particular sensor The display will then show only the temperature for that location Pressing the blue button a second time will release the sensor and the display will then go back to the normal cycle If a temperature goes out of range the alarm will sound Once you have checked the display to find out which sensor is out of range and how long it has been out of range you can then press the red button to turn off the audible alarm The audible alarm will remain off for the duration of the current out of range but will sound again if the temperature goes back into range and then goes out of range again or if a different sensor goes out of range The green menu button provides you with options for e Setting the date e Printing Reports Setting the date The logger needs to know the correct date so that it can put the right date on the reports To set the date press green Menu mode button press the Increase button until the display shows set date press the green button to accept press the increase de
89. u can find out about the menu by pointing at a menu option then pressing the F1 key To find out more now click on menu If you minimise the monitor view the computer will display an icon which shows whether there are any warnings or alarms If an alarm occurs you can then double click on the icon to restore the monitor view Graph View When you select the View Graph menu option the computer opens a new window like this EnviroMon for Windows Of x MMA bb SI 9 a 3 fs 00 03 06 09 1215 18 21 00 03 06 09 12 15 1821 00 15Apr97 16Apr97 17Apr97 There are a number of buttons in the top right of the screen The group of horizontal buttons selects what time interval is displayed bml fastleft bmp move a whole display left earlier bml left bmp move a quarter display left earlier bml taller bmp magnify the middle half of the display to fill the whole width bml shorter bmp shrink the current display to half size so that more is displayed before and after bml right bmp move a quarter display right later bml fastrigh bmp move a whole display right later The upper group of vertical buttons controls the vertical range displayed note that if you use these controls to change the vertical range auto scaling is turned off Use the options button see below to turn auto scaling back on again bml up bmp move a whole display up bml taller bmp magnify the middle half of the display to fill the who
90. u can re program the unit details using the Program button on the logger configuration panel Logger not configured This message means either that the logger has never been configured or that the configuration has become corrupt You can use the Program button on the configuration panel to rewrite the configuration If this happens repeatedly return the logger to Pico for investigation Time not set This means that the logger s built in clock has not been set since the logger was powered up You can set the clock using the buttons on the logger see the day to day guide for instructions or by accessing the logger from the computer Once the logger is running you may see the following messages XXXXXXXXXXXX 21 25 degC This message is showing you the current reading 21 25 for sensor XXXXXXXXXX 21 22 gt 20 00 The temperature 21 22 is below the minimum limit 20 00 If this condition continues for at least one sample time longer than the holdoff period the alarm will sound 15 25 lt 20 00 The temperature 15 25 is above the maximum limit 20 00 If this condition continues for at least one sample time longer than the holdoff period the alarm will sound Converter fail This indicates that the logger cannot talk to the converter See troubleshooting for information on how to identify the cause Sensor fail This indicates that there is a problem with the sensor or the temperature is out of the valid range for this typ
91. u restore it it displays a count of IP messages received and of responses from the logger You can use this to identify problems To run an agent program on a Windows 95 computer each time it starts up Click on Start Select Settings Select Taskbar Select Start Menu programs Select Add Type in the command line c pico emagnt32 exe c2 Click on Next Select the Startup group To switch EnviroMon to IP operation go into the configuration menu select File then Configuraton select Equipment change the connection type to IP network Set the IP port number to 1051 Enter the name of the computer that the logger is connected to Press OK You can now use the logger as if it were connected directly to your computer Please note that EnviroMon for Windows will request data continuously from the the logger this may cause a lot of network traffic To reduce this set the RefreshDelay parameter in envimon ini See the EnviroMon driver help file for technical information about IP networking Chapter 9 Drivers Introduction Windows drivers Application program interface em_open em_get_sensors em_get_current em_close Examples C Cr Delphi Excel Visual Basic Labview Introduction This document describes the Windows drivers for the EnviroMon system It also provides information about the protocol used to transfer data to an from the logger for users who wish to write their own drivers Windows drivers There are two versions of the Wi
92. until the user cancels the alarm even if the alarm condition goes away in the meantime Site Name Fresher Foods Limited Maintenance Iceline Refrigiration Ltd 01116 212405 This information appears on graphs and spreadsheets Preferences Colour7 8421376 Colour8 8388863 Colour9 12632256 This specifies the colours of traces for the graph RDG files Each time the computer connects to the logger it transfers any new readings from the logger and saves them in a reading RDG file The filename is a hex date code see below containing the date and time of the most recent addition to the file The computer adds the data to the most recent file UNLESS one of the following conditions apply e the data file would exceed 64k bytes e the settings have changed since the last data was transferred e the values span a month end The last rule is so that if required it is possible to dispose of data files after a certain period of time say three months When new data is received the current data file is replaced by a new file which contains both the existing data and the new data When the current data file is full or at the start of a new month the program creates a new file The file contains the following components e a reading header record a list of the sensor numbers stored in this file e the reading data Reading header record typedef struct UNS16 version UNS16 no_of_readings UNS16 no_of_sensors UNS32
93. ure as it is not connected directly to the mains adapter Logger1 Converter1 There is one entry like this for every converter in the system It contains the information that appears in the converter list Address 5 The converter address Type 4 The converter type Sensor1 Name Box The sensor name is displayed by the logger and appears on reports Logger 1 The logger that this sensor is connected to Converter 12 The address of the converter that this sensor is connected to Channel 1 The channel on the converter for this sensor Active Yes This is Yes while the sensor remains in use and is set to No when the sensor is no longer required ConverterType 2 This is the type of converter Type 0 This is the type of sensor see the scaling dialog for more details 0 default AlarmEnabled No This is Yes if the alarm is enabled for this sensor Minimum 2000 This is the minimum threshold for alarms Maximum 7000 This is the maximum threshold for alarms Holdoff 0 This is the holdoff period in minutes for the alarm Graph1 Spread1 EventView1 These sections contain information about the current views If a particular view is causing problems it may be worth while erasing the corresponding section of the INI file Alarm Hysteresis 50 This controls the amount of hysteresis used for alarms See the Alarm dialog for a detailed description Latch No This specifes whether the alarm should continue to sound
94. verter ELO17 IP65 temperature converter PP046 Temperature humidity converter EL016 Voltage converter EL036 Signal conditioner converter EL037 Voltage 4 20mA converter Logger EL008 Logger with display EL005 Logger without display Alarm devices EL006 Remote alarm ELO18 Dialer adapter battery backup ELO11 Alarm relay Connectors It is very easy to set up a small system all of the parts connect together using FCC68 telephone style connectors To prevent incorrect assembly two different types of connector are used e network cables use a wide connector that has six slots and four pins the outer two slots are unused CO018 e sensor cables use a narrow connector that has four pins in four slots CO017 CM018 Network CMO017 Sensor Network The network is a four wire cable which carries power and data between the logger converters and optional equipment such as remote alarms The logger can be attached anywhere along the network cable The network will operate correctly with about 400 metres of standard network cable between the logger and the furthest converter this distance can be increased to a kilometre or more using thicker cable The network can be built in four ways e connect each converter to the next using EL003 network cables Each cable is 5 metres long so the units must be within five metres of each other e make up longer versions of the network cable then connect each converter to the next using these
95. view turns red You can click the mouse button on the lamp to cancel the alarm When this option is selected the computer beeps when you click on a lamp to confirm that it has accepted your request Beep continuously on alarm When this option is enabled the computer produces a continuous tone while an alarm is active This is useful if the computer is not in the same room as the logger Language Dialog This dialog is used to select the language that EnviroMon for Windows and the logger will use It is necessary to re program the logger using the Program button on the Configuration Panel Dialog after changing the language otherwise the computer will give an Incorrect configuration message each time the program is run Event Dialog This dialog appears when you double click on an event in the event view It enables you to enter notes against an event for example to state what actions were taken to deal with the problem Event View Options Dialog This dialog is used to set the options for the event view Show action taken When this is enabled the details of actions taken will be displayed on the event view This does of course reduce the number of events that can be displayed at the same time Auto save When this option is checked all event view settings are saved automatically when you close the event view Spreadsheet Options Dialog This dialog is used to set the options for the spreadsheet view Auto save When th
96. will beep every few seconds and will display a message If the dialer is not in an occupied area you should check it daily If operation during a mains power failure is required you should check the battery every three months First run the PC software to download all data stored in the logger then turn off the power to the alarm dialer The left hand green light should go off but the right hand green light should stay on The logger should carry on operating as normal Turn on the mains power again the left hand green light should come on Once a year you should check that the complete dialer system is working First notify all of the contacts that you are about to test the system and check that they remember how to acknowledge the alarm Next simulate a fault by disconnecting a sensor When the logger alarm starts sounding one of the red lights on the dialer adapter should come on and the dialer should start making calls Sensors Check annually for signs of corrosion on the sensor or for a build up of debris on the connector Calibration There are several levels of calibration e Calibration by a nationally accredited test house eg NAMAS in the UK e Calibration using equipment calibrated against National Standards e Comparison against other equipment as a sanity check Calibration by a nationally accredited test house is necessary only if there is some legal regulatory or technical reason for doing so For example a
97. y only possible to connect one logger by telephone If you need to access more you should create a separate configuration for each logger e Via radio modem the computer is connected to a radio modem as is the logger Up to 250 loggers may be connected each logger must have a separate address e Via IP network the computer is connected to an IP network and the logger is connected to another computer on the same IP network See How to access a logger via a network for more information Loggers are supplied programmed for direct connection at 9600 baud If you change the baud rate option or you wish to use a telephone modem you should use the Set Link option see below to write the link parameters into the logger Serial Port This option selects which COM port is to be used not applicable for IP network Data rate This options specifies the data rate to use for the link to the logger For a direct link over a short cable use 57600 baud For a modem check the maximum speed that the modem can handle Note that most modern telephone modems can operate at 57600 baud to the logger even if they operate at a lower speed over the telephone link not applicable for IP network Server This is for use with IP networks only Set this to the name of the computer that the logger is connected to You must run the EnviroMon agent on the computer that you specify IP port This is for use with IP networks only Set this to the same port as you spe

The EnviroMon System User Manual R5.06

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