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Cambridge Sensotec Rapidox 1100L Oxygen Analyser Instruction Manual 

 

Declaration of Conformity 

 

Manufacturer:

 

  Cambridge 

Sensotec 

Limited 

Unit 29 Stephenson Road 
St Ives 
CAMBS 
PE27 3WJ 
 

Product Names:

 

  Rapidox 

portable oxygen gas analyser 

 

Model Numbers:   

 

RX1100L 

 
Conform to the following specifications: 
 
EMC:  

EN 61326:1998 

Electrical equipment for measurement,  

     control 

and 

laboratory 

use 

 

Declaration: 

I declare that the above products conform to the applicable 

requirements of the LVD Directive 73/23/EEC and the EMC Directive 89/336/EEC 
and is CE marked accordingly. 

 

Signature: 

   

 

 
Name:

    Dr. 

Mark 

Swetnam 

 

Title:

 

    Managing 

Director 

 

Company:

 

   Cambridge 

Sensotec 

Limited 

 

Date: 

    

1

st

 August 2010

 

 

WEEE Regulations 2006 

 

Cambridge Sensotec takes its responsibilities under the WEEE 
Regulations extremely seriously and has taken steps to be compliant in 

line with our corporate and social responsibilities.   In the UK, 
Cambridge Sensotec has joined a registered compliance scheme 
“WeeeCare” (WeeeCare registration number WEE/MP3538PZ/SCH). 

 
UK users only:  If you have purchased any electronic or electrical product from 

Cambridge Sensotec since 2007 and would like to dispose of it correctly under the 
WEEE scheme, please contact us and we will be happy to either arrange the 
collection of the waste or have it returned to our offices for recycling.  All our in-

house manufactured products are scheme compliant and carry the WEEE label 
indicating that it is NOT allowed to be disposed of in a landfill site. 

Summary of Contents for Rapidox 1100L

Page 1: ... Oxygen Analyser Instruction Manual Revision 1 6 Cambridge Sensotec Limited Unit 29 Stephenson Road St Ives CAMBS PE27 3WJ Tel 44 0 1480 462142 Fax 44 0 1480 466032 Mobile 07866 624236 Sales Cambridge Sensotec co uk ...

Page 2: ...ensotec Limited Date 1st August 2010 WEEE Regulations 2006 Cambridge Sensotec takes its responsibilities under the WEEE Regulations extremely seriously and has taken steps to be compliant in line with our corporate and social responsibilities In the UK Cambridge Sensotec has joined a registered compliance scheme WeeeCare WeeeCare registration number WEE MP3538PZ SCH UK users only If you have purch...

Page 3: ...idox Calibration 7 7 6 Alarms 8 7 7 Analogue Outputs 10 7 8 Setting the Display Units 12 7 9 Setting the Display Options 12 Internal Pressure Sensor 12 7 10 12 7 11 Pressure Mode 13 7 12 Setting the Baud Rate 13 7 13 RS232 RS485 Port 13 7 13 1 RS232 Protocol 13 7 13 2 RS485 protocol 15 7 14 Setting the Date Time 16 7 15 Replacing the Oxygen Sensor 16 7 16 Printing 17 7 17 Load Defaults 17 8 Rapido...

Page 4: ...s 31 9 5 Live time Graphing Screen 32 9 6 Main Graph Window 33 9 7 Plot Colours 33 9 8 Graph Titles and Labels 33 9 9 Plot Co ordinates 33 9 10 Last data point 34 9 11 Using the Cursor 34 9 12 Zooming 34 9 13 Y Axis Graph Units 34 9 14 Oxygen Scale 34 9 15 Second Y Axis 35 9 16 Loading an Old Run 35 9 17 Printing Graphs 35 9 18 Data Logging in the Background 35 9 19 Pausing the Data Logging 35 9 2...

Page 5: ...surement gas at all times even when switched off The analyser contains a powerful diaphragm pump that draws a gas sample at a flow rate set by the user of between zero and approximately 1 2 litres per minute An on board pressure sensor compensates for any pressure changes in the sample gas Alternatively the pump can be independently switched off and operated under flowing gas conditions The analys...

Page 6: ...16x2 9mm character back lit liquid crystal display LCD whose data update rate is user programmable The LCD displays up to four significant figures of oxygen O2 with a maximum resolution of 0 1ppm The display notation auto percent or ppm is user selectable 3 4 Calibration The simple and fully flexible calibration procedure requires two calibration gases The calibration gas compositions are user sel...

Page 7: ... dimensions 250mm X 263mm X 150mm Weight 4 kg 16 2 character 9mm back lit LCD Display Warm up time 5 minutes at 20 C Normal operating temperature 5 35 C Operating pressure range 600 to 1750mbar absolute Sensor range 0 10 000ppm 0 1 2 of the reading or 0 5ppm whichever is greater Sensor accuracy 0 10V user programmable into minimum 5kΩ Outputs O2 temperature or pressure 4 20mA current loop user pro...

Page 8: ...rmanent damage Make sure the rear ventilation slots and the fan on the rear panel are free of obstruction There are no user serviceable parts in this unit Do not attempt to repair yourself Refer all servicing to qualified Cambridge Sensotec personnel 6 Warning This unit is NOT designed for use in life support situations No responsibility can be held for injury or loss of life caused by inappropria...

Page 9: ...cable supplied using the rear power socket 8 Make sure that the cooling fan 9 is not obstructed during operation Turn the unit on using the red power switch on the front 5 The LCD 1 will display the serial number and firmware version for a few seconds before measurements begin The sensor will take approximately five minutes to stabilise The LCD display will show the oxygen reading and either the t...

Page 10: ...n and the pump is running When using the unit with a pressurised flowing gas source the pump can be left switched off 7 4 Menu Access Passwords The analyser has an option to set a password that will restrict access to the menus The password menu is disabled by default in the factory If you wish to password protect the analyser press ENT and scroll down to the PASSWORD option menu option 12 Pressin...

Page 11: ...c notation using the up and down and right arrows on the keypad The cursor flashes underneath the digit to edit For example 1000ppm should be entered as 1 000E 03ppm Note that you can not go backwards to edit a digit to the left of the cursor Instead keep pressing the RIGHT button and the cursor will wrap around back to the beginning Alternatively press ESC to start again Press ENT when you are re...

Page 12: ...hat this procedure can also be performed remotely using the software described in section 8 7 If at any time you encounter difficulties and wish to restore the machine to its factory set calibration use the configuration software provided and load the original factory settings described in section 7 17 below Each machine is provided with a unique file that contains the factory settings This is loc...

Page 13: ...nt is displayed in scientific notation with a flashing cursor under the first digit Use the UP DOWN arrows to change the digit and the RIGHT arrow to progress until the correct value is displayed When done press ENT to proceed to the next setting 6 CONTACTS The relay outputs can be set to either normally open N O or normally closed N C The factory default is N O meaning the contacts will close whe...

Page 14: ...pm 0 O2 and 10V 10 000ppm 1 O2 then 5V would indicate an oxygen reading of 5000ppm 0 5 O2 The scaling of this example is shown in the following plot from which other intermediate values can also be read Lin ppm Linear output mode 0 1 25 2 5 3 75 5 6 25 7 5 8 75 10 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 O2 O 2 Volts output 4 6 8 10 12 14 16 18 20 O 2 mA output Figure 3 Graph showing the linear out...

Page 15: ...mA 0 5V Fault De activated 2mA 1V Start up The analyser is still initialising De activated 2 5mA 1 25V Sensor under range The sensor reading is under range Active 3mA 1 5V Sensor over range The sensor reading is over range Active The sensor reading is in range but the temperature sensor reading is out of range and or the pressure mode is set to automatic pressure compensation active and the pressu...

Page 16: ...sure Temperature None Date Time or alternating Temperature and Pressure Use the UP DOWN arrows to select the required option and press ENT to store and return to the main menu 2 LCD Refresh Interval The display update interval can be selected from 0 1 to 1 5 seconds The current setting can be edited using the same method as described previously Once edited press ENT to store and return to the main...

Page 17: ...oftware for data logging you can choose the communications speed Baud Rate by scrolling down the menu to option 8 Set Baud Rate and using the UP DOWN arrows to select 9600 57 600 or 115 200 Press ENT button again to store and return to normal operation The default factory setting is 115 200 However if you are using an older PC you can decrease this to 57 600 or even 9600 to improve the reliability...

Page 18: ...plug Signals are as follows Rapidox D type Socket PC PLC Pin 2 Data Out Æ Data In RX Pin 3 Data In Å Data Out TX Pin 5 Common Gnd Common Gnd RS232 5 4 3 2 1 9 8 7 6 Figure 5 Rapidox RS232 pin configuration All other pins 1 4 6 7 8 9 Don t care Reading Data Data is read using command D Send the single character D to the Rapidox The Rapidox replies with one of the following responses All valid respo...

Page 19: ...eans data is being sent 9 959E 04 is Oxygen reading in ppm data separator 1 426E 02 is Oxygen sensor reading in mV data separator 2 000E 03 is the internal pressure sensor reading in bar gauge data separator 2 610E 01 is temperature sensor reading in C data separator 23 19 40 is Rapidox time ignore this data separator 14 11 10 is Rapidox date in DD MM YY format ignore this data separator ALM1 2 me...

Page 20: ... electrolyte is remaining in the cell The electrolyte is a liquid that slowly dries out over time This especially happens in dry gases most low O2 gases will probably be like this where it is normal to get 12 to 18 months life from a cell In humid applications this may be as much as five years however so these following warnings are just a guide The cell is held in a metal housing and it is possib...

Page 21: ...like this Cambridge Sensotec Ltd Rapidox 1100L Oxygen Analyser S N 2100942 FW v 01 03 03 01 7 17 Load Defaults If you make a mistake while programming the Rapidox it is possible to restore the machine back to its factory calibration and settings by loading the unique original configuration file that is supplied on your software CD ROM This can be accessed using the software provided please see sec...

Page 22: ...sfully on most language machines including Chinese Korean Japanese and all current versions of Windows operating system We do not recommend the use of Vista as connecting USB to serial converters to this operating system can be problematical at best Note that software is regionally aware and will therefore accept and display data using the decimal separator that is set in the PC s Regional Setting...

Page 23: ...can use a USB to RS232 adapter please contact Cambridge Sensotec if you would like advice about selecting one 8 3 On Screen Help You can access the on screen help facility at any time by clicking on the Help menu on the menu bar and select the Contents option or alternatively press F1 8 4 Configuration Page The configuration page is split into three and you can switch between them by clicking on t...

Page 24: ...to the Write columns and the software will then automatically perform a Read to update the data in the Read columns in order to highlight the differences between the current configuration in the Read columns and the settings from the file in the Write columns If you wish to proceed with the reconfiguration simply click any of the three Write buttons to reprogramme the Rapidox The right hand set of...

Page 25: ...ing Mode Not available for the Rapidox 1100L 7 Auxiliary Output Parameter Use this menu to select either PRESSURE or TEMPERATURE as the parameter sent to the auxiliary output on the rear panel of the analyser 8 LCD Refresh interval Use the drop down menu to select a refresh rate for the LCD min 0 1 max 1 5 sec The default is 0 3 seconds 9 LCD Second Line Option See section 7 9 for a full descripti...

Page 26: ...these two boxes to set the High and Low oxygen values for the analogue outputs 6 on the rear panel For example if you want 0V 4mA to represent 1ppm and 10V 20mA to represent 1000ppm then enter these two values into the appropriate boxes The value can be entered either in or ppm depending on the units selected The default values are 10000ppm for the high setting and 0ppm for the low setting 15 Auxi...

Page 27: ...nd the humidity of the gases exposed to the sensor 8 5 3 Alarm Config Screen Figure 8 Alarm configuration page Note the actual values used may differ from those shown above 18 Alarm Source Use the drop down box to assign a detector to the alarm If you want the alarm to be based on oxygen readings select oxygen from the drop down list The choices are oxygen pressure or temperature 19 Alarm Outputs ...

Page 28: ...C or mbar depending on which sensor you have assigned to the alarm Once you have finished editing the parameters select Write Configuration to Analyser from the file menu or click the Write button on any configuration page and the new data set will be written to the Rapidox The Rapidox is reprogrammed using the new configuration The software then reads the new settings back from the Rapidox and di...

Page 29: ... and let the reading on the LCD stabilise This is extremely important to perform a successful and accurate calibration especially at low ppm values where it can take several hours for a stable reading The software uses the two calibration gas values already stored in the Rapidox as a starting point These are typically High 1 and Low 0 001 as set in the factory but may be different if the user has ...

Page 30: ...self to the correct calibration You can now proceed with the rest of the calibration process by selecting the Middle and Low gases in the same manner 8 8 Calibration Error Messages During the calibration process described in 8 7 above it is possible to receive screen error messages as described here 1 Bad Sensor Reading The Rapidox software makes a prediction of the expected sensor mV for each cal...

Page 31: ...xygen sensor whilst in AUTO pressure correction mode you will get a fault message and the Rapidox will refuse to continue with the calibration Please contact Cambridge Sensotec to advice If you need to use the analyser in the meantime please disable the pressure correction function see section 7 11 and you can continue to calibrate and take readings Note that 1 2 above are only advisories and you ...

Page 32: ...ilities The utilities menu is located on the main file menu as shown below Figure 16 Software Utilities Menu 8 10 1 Setting Analyser Date and Time The current date and time of your PC are displayed on the configuration screen and can be loaded into the Rapidox by selecting the Utilities menu and clicking the Set date and time option This information is used in the RS232 data string for data loggin...

Page 33: ...ns actual screen shots of the software To recover the images simply press CTL V to paste 9 Rapidox Data Logging Software 9 1 Introduction The Rapidox software includes a full data logging facility Data can be saved to a file automatically at regular intervals and the format is compatible with modern spreadsheet programmes such as MS Excel A live time graphing facility is also included which has ma...

Page 34: ... the Read every label For example if you wish to log data once every minute type 1 in the box and select Mins from the drop down menu You can open the NOTES window at any time by selecting Notes from the Data Logger drop down menu A small text box appears in which you can type a text message This note is then saved as a header in the data file set and can be viewed along with the data You can eith...

Page 35: ...clock keeps ticking during the pause period 9 4 Auto Date Stamped Files If you are planning to run the data logger for extended periods of time then you should consider checking the Auto date stamped files option This feature will save the data at midnight for the previous twenty four hours and so on until the data logging is complete OR the user interrupts The data file is stored as a set of file...

Page 36: ...in a graphical format see Figure 18 To access the graph check the box labelled Show Plot The graph will appear in a new window and can be accessed at any time without disturbing a run that is already in progress You can select Run Pause and Stop from the Data Logger menu on the Rapidox Plot window to begin pause and end data logging and the window can be minimised to and restored from the task bar...

Page 37: ...l to return to the graph without change Figure 19 Plot colour palette menu 9 8 Graph Titles and Labels If you want to change the text of the graph axis labels place the mouse pointer over the text and do a single left click to enter edit mode The text can then be modified Similarly to change the title of the graph place the mouse pointer over the title and click once to edit If you choose not to e...

Page 38: ...ooming You can zoom in to any part of the oxygen plot by simply placing the mouse pointer on the new graph start position and then clicking and dragging a new box to re size the graph The label on the box to the upper left of the graph window will change to Zoom box co ordinates and an extra set of co ordinates labelled X2 and Y2 will appear showing the co ordinates in X and Y units of the second ...

Page 39: ...int Plot from the File menu This will bring up the printer dialogue box for your specific printer where you can choose various printing options Make sure that the printer page is set to landscape to obtain a full size print out 9 18 Data Logging in the Background It is possible to begin data logging and then minimise the windows to continue working with another application To minimise the graph si...

Page 40: ...ic information on how to import text files into your spreadsheet programme please refer to the help guide supplied with the programme Data is saved in comma separated value format with a txt file extension as the initial programme default However when entering the file name you can instead select a csv extension the programme will register the last used file extension as the new default The csv ex...

Page 41: ...ou experience difficulties with your machine You may be asked to record values from this page if trouble shooting is required Figure 20 Rapidox Diagnostics Page 1 Analogue The live analogue values displayed in this pane are voltage measurements coming directly from the computer chip inside the analyser They are for information purposes only but are a useful diagnostics tool for Sensotec staff as u...

Page 42: ...ast 1 minute to gather a few data points In order to stop logging simply uncheck the Log Diagnostic Data tick box Note that diagnostic data is always saved to the same file and will automatically overwrite any existing file without prompting the user so if you want to save existing data you must either rename it or copy or move it to a different folder before checking the Log Diagnostic Data tick ...

Page 43: ...are correctly entered in the boxes on the right The best procedure is to Read Analyser Configuration and then press Copy so the values in the boxes are the same as those stored in the Rapidox memory You can then edit these values and then select Write to the Analyser when finished Q How do I get back to the factory calibration for my instrument A Select Default Configuration from the File menu and...

Page 44: ...al 4 The warranty period applicable shall be 12 months from the date of delivery provided that a Notice in writing of the defects complained of shall be given to Cambridge Sensotec The Seller upon their appearance and b such defects shall be found to have arisen from the Seller s faulty design workmanship or materials and c The defective goods shall be returned to the Seller s premises at the Purc...

Page 45: ...032 www cambridge sensotec co uk sales cambridge sensotec co uk VAT no GB 745 939975 Registered in England No 4035592 Rapidox CERTIFICATE of CALIBRATION Date Rapidox Serial number Calibration Constant A Calibration Constant B Calibration Gas 1 Calibration Gas 2 Configuration Filename Calibrated by Signed ...

Page 46: ...Cambridge Sensotec Rapidox 1100L Oxygen Analyser Instruction Manual ...

Page 47: ...NT ENT ENT ENT Edit Alarm Setpoint Options N O N C Displays message for 1 5 seconds ESC ESC ENT 1 Calibrate prompts 1 4 000E 04ppm prompts 3 Enter for two seconds to calibrate Displays message for 1 5 seconds Displays message for 1 5 seconds Enter for two seconds to calibrate APPENDIX 1 MENU FLOWCHART FOR RAPIDOX 1100L 20ppm O2 0 0mbar ESC Calib O2 High prompts 2 ENT Continues on page 2 Back to Me...

Page 48: ...de None prompts 5 ENT Mode None Mode configured ENT Displays message for 1 5 seconds 7 Pressure Mode prompts 1 ESC Displays message for 1 5 seconds Options Pressure Temperature None Date time Alternate T P 6 Display Setup prompts 1 Line 2 options prompts 2 Refresh interval prompts 2 L2 Pressure prompts 5 Interval 0 3 s prompts 5 L2 Pressure Line 2 set Interval 0 3 s LCD refresh set ENT ENT ENT ENT...

Page 49: ... Scroll Menu ENT Next ESC Exit Prompts 2 Scroll Menu ENT Next ESC Back Prompts 3 Change Select Char ENT OK ESC Back Prompts 4 ENT OK ESC Back Prompts 5 Change ENT OK ESC Back Back to Measurements ESC Back to Menu List No changes 11 Load Defaults prompts 1 Load Defaults prompts 7 Defaults Loaded Displays message for 1 5 seconds ENT ENT Enter for two seconds to load defaults Prompts 6 Change ENT Nex...

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