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PureAire Monitoring Systems, Inc.

 

 

39 

 

 

 

5.

 

Wipe the sensing electrode and the surrounding area with a dry paper tissue. 

PAPER
TISSUE

SENSING
ELECTRODE

 

6.

 

Place a new silicone sheet (if used) and O-ring on the sensor. Make sure that the area is dry of 
electrolyte. 

O-RING

SILICON SHEET

 

Apply a drop of electrolyte on the sensing electrode. 

 SENSING

ELECTRODE

DROP OF

ELECTROLYTE

ENLARGED

VIEW

 

7.

 

Place a new membrane on the sensor, with the bead of electrolyte between the electrode and the 
membrane.  

ENLARGED

VIEW

MEMBRANE

 

NOTE:  If reusing the old  
O-ring and Silicon sheet, 
please dry them thoroughly 
before reinstalling. 

 

AN sensor cell uses a 
White O-ring, 
p/n 1516-12W and 
Silicon sheet, 
p/n SC2000 

 

Electrolyte  
P/N  El-4460-1 

 

White Membrane 
P/N M-4400M 

 

Caution:  A GREEN tinted 
paper separates each membrane.  

  
DO NOT USE THIS PAPER 

 

 

M-4400M Membrane 
Color is White 

 

NOTE

: Never touch the 

center of the membrane 
with bare fingers. Oil on 
your fingers can block the

 

membrane pores.  

 

39 

 

Содержание Air Check Advantage Ex

Страница 1: ...x Methyl iodide Monitor Instruction Manual PureAire Monitoring Systems Inc 1140 Ensell Road Lake Zurich IL 60047 Phone 847 726 6000 Fax 847 726 6051 Toll Free 888 788 8050 E mail info pureaire net Web Pureairemonitoring com ...

Страница 2: ...rience innovative products and commitment to service will satisfy your specific monitoring needs now and in the future Our growth is a result of our total commitment to supporting our customers We re available 24 hours a day 7 days a week to help you when you need us Our 24 hour Emergency phone number is 1 847 420 3814 We can provide field service preventative maintenance programs and training to ...

Страница 3: ...he fuse on the drive PCB After power up please let the system equilibrate a few hours before making any adjustments The Methyl iodide monitor is designed for safety monitoring where normal use is defined as zero gas concentration with an occasional excursion If the monitor is continuously exposed to Methyl iodide or if the monitor is exposed to very high short term gas concentrations it will requi...

Страница 4: ...te Requirements 13 3 2 Mounting 13 3 3 Sensor Installation 13 3 4 Wiring 14 3 5 Initial Startup 15 4 Air Check Methyl iodide Programming 16 4 1 Control Panel Overview 16 4 2 Joystick Operation 16 4 3 Program Flow Chart 17 4 4 Entering the Password 21 4 5 Changing the User Password 22 4 6 Entering the Menus 25 5 Maintenance Calibration 36 5 1 Routine Maintenance Schedule 36 5 2 Loss of Power Indica...

Страница 5: ... explosion proof water resistant housing that may be wall mounted and is designed to require as little space for installation as possible The system has the following features 24 VDC operation Built in pyrolizer Integral digitally controlled sampling pump and flow system Local digital display User selectable dual level alarm and system fault relays 4 20 mA output Renewable long life electrochemica...

Страница 6: ... It may also be used as a stand alone detection system Ex proof Seal Fitting This is the opening in the transmitter housing for connecting the 4 20 mA output 24 VDC power cable and alarm relay wiring Sample Inlet This is a Class 1 Div 1 Flame arrestor and serves as the connection for the incoming sample line Sample exhaust This is a Class 1 Div 1 Flame arrestor and serves as the connection for the...

Страница 7: ... manual only 2 Joystick Used for selecting and adjusting the built in menus for alarm threshold settings relay state alarm delay etc 3 Alarm Fault LED s These LED s illuminate when a gas concentration alarm or instrument fault is detected 4 Flowmeter This flow meter displays the flow rate to the sampling system in SCFH NOTE The flow rate is factory set and is continuously regulated via a built in ...

Страница 8: ...ter Provides positive indication of flow through the monitor NOTE The flow rate is factory set and is continuously regulated via a built in flow sensor 6 Flow Chamber The converted gas from the pyrolizer is introduced to the gas sensor in this chamber Sample flow into the chamber is continually monitored If the sample pump fails the system fault relay is activated 7 CH3I Sensor Cell A renewable el...

Страница 9: ... is made 1 2 6 Alarm Relay Board 9 Pump Connector Alarm 2 Relay CONN 1 Alarm 1 Relay CONN 2 Fault Relay CONN 3 NO NC C NO NC C NO NC C Alarm 2 Alarm 1 Fault Relay Sensor cell connector 24 VDC Power Terminal Block Terminated at Factory Flow Sensor Remote Reset Terminal Block 1 Power Analog Terminal Block Common Terminated at Factory mA output 24VDC Terminated at Factory 8 ...

Страница 10: ...ED Confirms the sample pump is operating and flow is being maintained at the proper flow rate Blue Fault Status LED Indicates various system faults When not in fault the Blue LED remains illuminated continuously Pump and Pyrolizer Drive Assembly Pyrolizer Filament connector Pyrolizer Drive Board Main 24VDC Power Connector Do Not Remove Jumper Sample Pump 24VDC Pin 1 Common Pin 2 9 ...

Страница 11: ...es Operating Temp 14 to 86 F 0 to 30 C consult PureAire for lower or higher operating temperatures Humidity Typically 20 to 95 RH Warranty The warranty is limited to repairing or replacing the instrument or part thereof for a period of one 1 year after shipment when in our opinion the repair or replacement is covered by this warranty Any defective equipment must be returned prepaid to the PureAire...

Страница 12: ...4 20 mA Relay Output Dual level user selectable alarm relays and one fault relay Rated 2amps 30VDC 2amps 250VAC 2 4 Electrical Requirements Power 24 VDC external power NOTE Must be a regulated 24VDC Power Supply Consumption 2 0 amps 2 5 Physical Characteristics Dimensions 12 W x 11 H x 7 625 D 305 x 280 x 140 mm Weight 45 pounds 20 5 kg Enclosure Type Explosion proof IP 65 NEMA 4X Class 1 Division...

Страница 13: ...rm 1 Normal Alarm 2 Normal Do you want to alarm at a level higher normal or lower inverted than the alarm threshold Alarm Delay Alarm 5 seconds How long do you want to wait until the alarms activate Zero Suppression 0 5ppm At what level do you want to see the initial gas concentration reading Set Alarm Hysterisis Alarm 1 0 0 ppm Alarm 2 0 0 ppm For use when using the monitor for control It is reco...

Страница 14: ...mounting and should be installed no closer than 36 inches 915 mm above floor level If mounted outdoors keep direct sunlight off of the enclosure 3 3 Sensor Installation IMPORTANT Be careful not to turn the sensor or touch the membrane on the bottom of the sensor during installation CAUTION The target gas is factory programmed and cannot be adjusted in the field Failure to install the correct senso...

Страница 15: ...DC Power Supply Failure to use a regulated 24VDC power supply will void the warranty The 24 VDC power in connections are made on the 6 pin terminal connection located on the Power Supply PCB These connections are made as follows Pin Connection 6 DC 24V 5 Common 4 Shield 3 4 2 Alarm Relays The Air Check Ex Methyl iodide monitor incorporates two gas concentration alarm and one system fault relay The...

Страница 16: ... and Pyrolizer Heater Fault will scroll on the top line F02 00 will display on the bottom line and the Yellow Fault LED will still remain illuminated Approximately 30 seconds later the Pyrolizer Heater Fault and F02 fault message and will clear and will display CH3I on the top line a ppm gas concentration will display on the bottom line of the digital display and the Yellow Fault LED will turn off...

Страница 17: ...ick Operation The Methyl iodide monitor uses a 4 position joystick with a center pushbutton for selecting menus and changing values The joystick is programmed to standard protocol as follows NOTE The joystick has a built in delay to prevent accidental tampering of the menus Deliberate entries are required P r e v i o u s s Plus Pushing the joystick in this direction increases the value Minus Pushi...

Страница 18: ...r o 128 Set 20mA S p a n 098 Methyl iodide 2 0 9 Enter P a s s w o r d A Force loop Not Available Set Formats Format Relay 2 R e l a y 2 Format Relay 1 Normal Invert Normal Invert Format Fault Relay F a u l t R e l a y Normal Invert NOTE All numerical values shown are only examples and are not Factory Defaults 17 ...

Страница 19: ... Alarm 2 P o l a r i t y Normal Set Audio Alarm Not available PassCode OK Not Available Set Latching Relay 2 Set Latching Set Latching R e l a y 1 Nonlatch Latching Nonlatch Latching Set Latching Audio NOTE All numerical values shown are only examples and are not Factory Defaults N O T E Z e r o s u p p Invert ...

Страница 20: ... 0 5ppm Set Relay 1 A l a r m T h r e s h o l d 1 0 PPM Set Relay 2 A l a r m T h r e s h o l d 5 0 PPM Set Audio T h r e s h o l d Not Available Set Alarm Thresholds PassCode OK Set Alarm 1 H y s t e r i s i s 0 0 ppm Set Alarm 2 H y s t e r i s i s 0 0 ppm Set Audio A l a r m H y s t e r i s i s Not Available Set Alarm Hysterisis 19 ...

Страница 21: ... e U s e r P a s s Enabled n a b l e d Enable Auto Zero Cal Z n a b l e A u t o C a l Start Zero Cal t a r t Z e r o C a l Set Module Zero e t M o d u l e Z e r o 00 o t A v a i l a b l e Enable Zero Tracker n a b l e Z e r o T r a c k i n g Not Available o t A v a i l a b l e Not Available o t A v a i l a b l e Enter New User Password t A v a i l a b l e Disabled i s a b l e d Not Available o t A...

Страница 22: ... the joystick up or down will permit you to scroll through the alphanumeric characters 3 Push the joystick up or down to enter the first digit The display is an alphanumeric display and toggles from A through Z followed by 0 to 9 The character to be entered will flash 4 Push the joystick again to the right to select the second entry Push the joystick up or down to select the second digit The chara...

Страница 23: ...password and the following explains how to change the password 1 Push the joystick down to access the Manage Passwords Menu Manage Passwords will scroll on the first line of the digital display The second line will still display the current ppm gas level 2 Push the joystick to the right to enter the input screen Enter New User Password will scroll on the first line of the digital display 3 Push th...

Страница 24: ... entry Push the joystick up or down to select the third and final digit The character being entered will flash and the first and second characters entered will remain lit You are now ready to enter the 3 digit password 7 Push the joystick in the center to enter the password This will display the next command Re Enter New Password 8 Push the joystick to the right to enter the input screen The lette...

Страница 25: ...Re enter Password Screen You ll need to repeat steps 2 through 11 If you do not enter the password correctly the monitor remembers the last password that was properly input If you misplace or loose your password contact PureAire with the monitors DTM for instructions on recovering your password The DTM is displayed by moving the joystick to the left 4 5 1 Enable User Password This menu permits the...

Страница 26: ...t meter to read the mA output Please consult PureAire for more information From this main menu pushing the joystick to the right will select the sub menu and the digital display will scroll the following This is the menu at which to adjust the 4mA output being sent from the Methyl iodide Monitor To change this value push the joystick right to display the 4 mA setting The display will indicate a va...

Страница 27: ...es Press ENTER to accept the value Push the joystick to the left brings you back to the pervious Main menu The digital display will scroll the following Push the joystick down to access the next sub menu Force loop will scroll NOTE This menu item is not available on the Methyl iodide monitor Push the joystick to the left brings you back to the pervious menu The digital display Will scroll the foll...

Страница 28: ...dicate NORMAL Pushing the joystick down will change the relay state from NORMAL to INVERT Press ENTER to accept the value After entering the relay state the display will default back to the Set Formats menu The display will scroll the following From this main menu pushing the joystick to the right will select the sub menu and the digital display will scroll the following Push the joystick down to ...

Страница 29: ...ital display will scroll the following Push the joystick twice to select the fault relay to be adjusted The display will scroll Format Fault Relay This is the menu at which to adjust the fault alarm relay state on the Methyl iodide Monitor To change this value push the joystick right to display the relay state The display will Indicate NORMAL Pushing the joystick down will change the relay state f...

Страница 30: ...larm polarity To access this menu from the Set Formats menu push the joystick down to display the Set Alarm Threshold Polarity adjustment menu This will scroll on the digital display Push the joystick right to access the first sub menu Set Alarm 1 Polarity will scroll on the display This is the menu at which to adjust the first level alarm polarity state on the Methyl iodide Monitor To change this...

Страница 31: ...y state from NORMAL to INVERT Press ENTER to accept the value After entering the relay state the display will default back to the Set Relay 2 Alarm Threshold menu The display will scroll the following Push the joystick down to access the next sub menu Set Audio Alarm Polarity will scroll on the display This is the menu at which to adjust the second level alarm polarity state on the Methyl iodide M...

Страница 32: ...From this main menu pushing the joystick to the right will select the sub menu and the digital display will scroll the following This is the menu at which to adjust the first level alarm relay state on the Methyl iodide Monitor To change this value push the joystick right to display the relay state The display will Indicate LATCH Pushing the joystick down will change the relay state from LATCHING ...

Страница 33: ...state from LATCHING to NONLATCH Press ENTER to accept the value After entering the relay state the display will default back to the Set Latching menu The display will scroll the following From this main menu pushing the joystick to the right will select the sub menu and the digital display will scroll the following Push the joystick twice to select the Audio Alarm relay to be adjusted The display ...

Страница 34: ...e joystick up increases the value and pushing the joystick down decreases the value Press ENTER to accept the value After entering the alarm delay the display will default back to the Alarm Delay menu and the display will scroll the following NOTE The alarm delay is only available for alarms 1 and 2 There is no delay for the fault relay Any system fault will immediately activate the Fault Relay 4 ...

Страница 35: ...e joystick to the right will select the first sub menu and the digital display will scroll the following Set Relay 1 Alarm Threshold This is the gas concentration at which the instrument s first level alarm will be activated To change the displayed value push the joystick to the right to display the first level alarm setting The display will indicate a value between 0 0ppm and full scale Pushing t...

Страница 36: ... display will scroll the following Push the joystick down to access the next sub menu Set Audio Alarm Threshold will scroll on the digital display NOTE The audio alarm option module is not available for Methyl iodide 4 6 8 Set Alarm Hysterisis This function was designed for PureAire s Oxygen deficiency monitor when used as a control system NOTE The Hystersis function is permits a user to set the d...

Страница 37: ...atus With No Gas Present Local Display Display should read 0 0 4 20 mA Output Output should be 4 mA Gas Concentration Alarm Relays De energized factory default System Fault Relay De energized factory default 5 1 2 Recommended Routine Maintenance Schedule Routine Visual Checks flow fault LED Quarterly Flow rate and power status Continually supervised Flow is constantly monitored and adjusted by the...

Страница 38: ...nstallation IMPORTANT Be careful not to turn the sensor or touch the membrane on the bottom of the sensor during installation Oil on your fingers can block the small pores on the membrane surface 1 Remove the sampling system front cover by unfastening the 4 plastic captive screws 2 Remove the sensor shorting plug or battery if supplied 3 Plug the methyl iodide sensor into the flow chamber inside t...

Страница 39: ... as shown and pour the old electrolyte into the beaker Some will remain in the sensor until the pressure compensation plug is removed Remove the plug to release the electrolyte into the beaker PRESSURE COMPENSATION SCREW BEAKER 4 Hold the sensor in your hand with the sensing electrode up Hold a piece of paper tissue over the pressure compensation port with your thumb Pour 10 cc s of fresh electrol...

Страница 40: ...EW 7 Place a new membrane on the sensor with the bead of electrolyte between the electrode and the membrane ENLARGED VIEW MEMBRANE NOTE If reusing the old O ring and Silicon sheet please dry them thoroughly before reinstalling AN sensor cell uses a White O ring p n 1516 12W and Silicon sheet p n SC2000 Electrolyte P N El 4460 1 White Membrane P N M 4400M Caution A GREEN tinted paper separates each...

Страница 41: ...TION If the box nut is too loose the sensor cell response may be affected BOX NUT RETAINER RING Hold the sensor in your hand with the electrode down Pour fresh electrolyte in until it reaches the MAX mark PRESSURE COMPENSATION PORT ELECTROLYTE LEVEL ENLARGED VIEW NOTE MAX level differs from sensor to sensor 9 Wipe the pressure compensation port and its surrounding area with a dry paper tissue PRES...

Страница 42: ...or as outlined in section 6 1 2 NOTE When storing the sensor cell never store the sensor cell horizontal with the Pressure Compensation Plug positioned down or store the sensor cell upside down This can cause the electrolyte to leak from the sensor cell pressure compensation plug Example of proper membrane Example of wrinkled membrane 41 ...

Страница 43: ...nge monitors please use order span gas concentrations that equal approximately the full scale value 5 4 2 Initial Preparation NOTE If the instrument is connected to a controller set the controller to Standby mode to avoid accidental alarms NOTE If the monitor was powered off it is recommended to warm up the monitor for two hours before making any adjustments to the sensor 5 4 3 Set Module Zero NOT...

Страница 44: ...To reset the zero Press ENTER to reset the zero and accept the new zero value Push the joystick to the left twice to exit this submenu and return back to the Sensor Adjustment Menu The monitor zero has been adjusted and the monitor is now ready for calibration 5 4 4 Gas Prepration CAUTION Be sure to observe all safety guidelines when generating and using calibration gases IMPORTANT Due to the diff...

Страница 45: ...g to the gas waste tedlar bag Inspect the flow rate again on the flow meter and adjust to the proper flow rate 2 Open the valve on the calibration span gas Tedlar bag and connect it to the sampler inlet and expose the monitor to gas for 1 minute Adjust the display to the span gas reading by pushing the joystick up or down to set the concentration value on the PPM display 4 Press ENTER to accept th...

Страница 46: ...PureAire Monitoring Systems Inc 45 45 Methyl iodide Span gas cylinder On Demand Regulator ...

Страница 47: ...e of a particulate filter is supplied On installation attach the particulate filter to the inlet using the tygon sample tubing supplied Insure the correct flow by aligning the arrow towards the inlet connector The pyrolizer insulation temperature can exceed 150F and can cause burns if touched Please power down the system when working inside the enclosure ...

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