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PureAire Monitoring Systems, Inc.

13

5.2 Program Flowchart

PassCode OK

PassCode OK

Set 4-20mA

loop

Set 4mA

Zero

126

Set 20mA

Span

076

Oxygen

20.9%

Enter

Password

557

Force loop

Not available

Set Formats

Format

Relay 2

Format

Relay 1

Normal

Invert

Normal

Invert

Format Fault

Relay

Normal

Invert

NOTE:

All

numerical values

shown are only

examples and are

not Factory

Defaults

NOTE:

The

menus

highlighted in

light gray are

only used for

O2 monitors

with the Alarm

Relay Board

They are

displayed on

the O

2

monitor

and their

function is

disabled.

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Summary of Contents for 99018

Page 1: ...ciency Monitor 0 25 Instruction Manual For model D Part number 99018 1140 Ensell Road Lake Zurich Illinois 60047 Phone 847 726 6000 Fax 847 726 6051 Toll Free 888 788 8050 pureairemonitoring com Rev 4 09 September 2022 ...

Page 2: ...cts 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 are 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 your technicians in th...

Page 3: ...ow rates that exceed liter per minute 500 cc per minute flow b Expose the monitor to span gas blends that consist of Oxygen and Nitrogen only Do Not expose the monitor to any combustible gas i e Methane Hydrogen etc Exposure to combustible span gases can damage the oxygen zirconium sensor cell 5 Do not expose the Oxygen monitor to silicone Freon or corrosive compounds They can cause a loss of sens...

Page 4: ...outine Maintenance Schedule 12 4 4 Loss of Power Indicator 12 4 5 Alarm Reset 12 5 Air Check O2 Monitor Programming 13 5 1 Joystick Operation 13 5 2 Program Flowchart 14 5 3 Entering the Password 18 5 4 Changing the User Password 19 5 5 Entering the Menus 22 5 5 1 Set 4 20mA Loop 22 5 5 2 Set Formats 24 5 5 3 Set Alarm Threshold Polarity 26 5 5 4 Set Latching 28 5 5 5 Resetting a Latching Alarm 31...

Page 5: ...ck O2 Deficiency Monitor does not drift or loose sensitivity when the weather or temperature changes Each system consists of a long life zirconium oxide sensor cell and three wire transmitter The Air Check O2 monitor may be used as a stand alone gas detector linked to optional PureAire single and multipoint controllers or connected to your own centralized control and surveillance system This manua...

Page 6: ...ent 2 Joystick Used for selecting and adjusting the built in menus The Air Check O2 monitor is available with optional dual level user selectable relays The joystick is also used to select alarm levels relay settings and resetting any latching visual and audio alarms 3 Cable Port This is the opening in the transmitter housing for connecting the 4 20 mA output and 24 VDC power cable 4 Sensor Protec...

Page 7: ...r that protects the interior of the transmitter 8 Transmitter Cover Fasteners There are 4 captive screws secure the transmitter cover in place 9 Electronics Fasteners These captive screws secure the electronics to the enclosure 1 2 2 Front View Exterior 6 2 9 6 3 1 9 4 5 ...

Page 8: ... This will damage the oxygen sensor 3 PTC Resettable Fuse The PCB is protected with a PTC Fuse that is resettable and Never needs to be replaced If it trips you will need to turn power off to the monitor When power resumes the fuse will reset 1 2 8 Enclosure Mounting Feet 1 Power and analog output Terminal PTC Resettable Fuse Common Common mA output 24 VDC 24 VDC Identification legend Mounting Fee...

Page 9: ...as Detection System Type Long Life Zirconium Oxide Sensor Cell Range 0 25 Sensor Life 8 to 10 years under normal conditions Transmitter Microprocessor electronics with built in 3 digit backlit LCD display Joystick operated menus 2 3 Signal Outputs Local Display Digital display calibrated for Oxygen The range is stated on the model label and can also be accessed via the joystick on the front panel ...

Page 10: ...for O2 Monitors with Alarm Relays Set Formats LED and alarm relay State Alarm 1 Normal Alarm 2 Normal Fault Normal Do you want the relays to energize normal or de energize fail safe when the alarm activates Set Alarm Threshold Polarity Alarm 1 Inverted Alarm 2 Inverted Audio NA Do you want to alarm at a level higher normal or lower inverted than the alarm threshold Set Latching Alarm 1 Non latchin...

Page 11: ...ot designed for installation in hazardous areas Consult PureAire for information on enclosures for use in hazardous environments 3 2 Mounting 3 2 1 Transmitter Enclosure The Air Check O2 monitor is designed primarily for wall mounting and should be installed at a height convenient for operation maintenance and viewing of the instrument display The following is a drawing of the mounting dimensions ...

Page 12: ...ent into operation 1 Check the integrity of all wiring 2 Apply VDC power The instrument should now be powered up Upon power up the Air Check O2 monitor LCD displays the PureAire logo and then starts a 4 minute 240 second count down as the current to the zirconium oxide O2 sensor stabilizes The monitor will output a 4 mA signal during the entire warm up period After the countdown the oxygen sensor ...

Page 13: ...on is detected the analog output signal is altered A few common error codes are displayed in the following table Condition Analog Signal Supply Voltage Out of Range Fault code 16 Analog output drops to 2 mA Transmitter cable cut Analog output drops to 0 mA O2 Cell complete failure Fault Code 128 Analog output drops to 2 mA Fault Relay activates Available with Relay Option Only O2 System Warm Up An...

Page 14: ... requires periodic testing with nitrogen to verify the cells response to low oxygen levels See Section 5 5 10 for how to make minor adjustments 4 4 Loss of Power Indicator In the event the Air Check O2 monitor loses 24VDC power the 4 20 mA analog output signal drops to 0mA The LCD display will also display a blank screen 4 5 Alarm Reset Only available on monitors with Relay and Alarm PCB It the Ai...

Page 15: ...es 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 CAUTION Only qualified personnel should perform programming maintenance and sensor verification Plus Minus Previous Next Plus Pushing t...

Page 16: ...e loop Not available Set Formats Format Relay 2 Format Relay 1 Normal Invert Normal Invert Format Fault Relay Normal Invert NOTE All numerical values shown are only examples and are not Factory Defaults NOTE The menus highlighted in light gray are only used for O2 monitors with the Alarm Relay Board They are displayed on the O2 monitor and their function is disabled ...

Page 17: ...lay 005 Set Audio Alarm Polarity Normal PassCode OK Nonlatch Set Latching Relay 2 Set Latching Set Latching Relay 1 Nonlatch Latch Nonlatch Latch Set Latching Audio Invert Latch NOTE The menus highlighted in light gray are only used for O2 monitors with the Alarm Relay Board They are displayed on the O2 monitor and their function is disabled ...

Page 18: ...Code OK Set Alarm 1 Hysteresis 0 0 Set Alarm 2 Hysteresis 0 0 Set Audio Alarm Hysteresis 0 0 Set Alarm Hysteresis NOTE All numerical values shown are only examples and are Not Factory Defaults NOTE Zero suppression function is not available for Oxygen NOTE The menus highlighted in light gray are only used for O2 monitors with the Alarm Relay Board They are displayed on the O2 monitor and their fun...

Page 19: ...PureAire Monitoring Systems Inc 16 PassCode OK Manage Passwords Enter New User Password Enter minimum of 2 characters Enable User Password Enabled Disabled Reset User Password Reset to Factory Default ...

Page 20: ...eric 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 character being entered will flash and the first character entered will remain lit 5 Push the joystick again to the right to select the third entry Push the joystick up or do...

Page 21: ...first line of the digital display 3 Push the joystick to the right to enter the input screen The letter A will appear and flash NOTE The display has characters that start with A through Z and 0 through 9 Pushing the joystick up or down will permit you to scroll through the alphanumeric characters 4 Push the joystick up or down to enter the first digit The display is an alphanumeric display and tog...

Page 22: ...display and toggles from A through Z followed by 0 to 9 The character to be entered will flash 10 Push the joystick again to the right to select the second entry Push the joystick up or down to select the second digit The character being entered will flash and the first character entered will remain lit 11 Push the joystick again to the right to select the third entry Push the joystick up or down ...

Page 23: ...s If enabled it will display Enabled Push the joystick up or down to change the status Once enabled or disabled is selected Push the joystick in the center to enter the new status If correctly entered the display will scroll Enable User Password 5 4 2 Reset User Password This menu permits you to reset the password back to 557 as set at the factory Push the joystick right to display the menu Reset ...

Page 24: ...put 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 Air Check O2 Monitor To change this value push the joystick right to display the 4 mA setting The display will indicate a value between 0 and 255 count...

Page 25: ...he 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 The Force Loop function is not available on the Air Check O2 monitor It was designed for toxic and corrosive gases This is the sub menu is only used on PureAire s toxic and corrosive monitors Push the joystick to the left bri...

Page 26: ... state Inverted 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 Air Check O2 Monitor To change this value push the joystick right to display the relay state The display will Indicate INVERT Pushing the joystick down will change the relay stat...

Page 27: ...elay state from INVERT to NORMAL 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 twice to select the fault relay to be adjusted The display will s...

Page 28: ...a Normal setting for the Alarm Threshold Polarity means that the system will alarm when the gas concentration exceeds goes above an alarm set point This menu will permit the selection of the alarm 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 t...

Page 29: ...lay 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 Air Check O2 Monitor NOTE The O2 system must have the audio alarm option module installed to acces...

Page 30: ...s the Enter Key In a non latching state the alarm relay will automatically reset once the gas concentration has returned to 20 9 for oxygen NOTE The O2 system must have the relay module installed to access this menu If no relay module is installed the display will indicate N A not available This menu will permit the setting of the two alarm relays and the fault relay settings from a latching to a ...

Page 31: ...ystick down to select the next relay to be adjusted The display will scroll the following Set Latching Relay 2 This is the menu at which to adjust the second level alarm relay state on the Air Check O2 Monitor To change this value push the joystick right to display the relay state The display will Indicate LATCHING Pushing the joystick down will change the relay state from LATCHING to NONLATCH Pre...

Page 32: ...ption module installed to access this menu If this option is installed the display will indicate N A not available To change this value push the joystick right to display the relay state The display will Indicate LATCHING Pushing the joystick down will change the relay state from LATCHING to NONLATCH Press ENTER to accept the value After entering the fault relay state the display will default back...

Page 33: ...ush the joystick right to display the time screen The display will indicate a value between 0 and 255 seconds Pushing the 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 availabl...

Page 34: ...The display will indicate a value between 00 0 and 25 5 Pushing the joystick up increases the value and pushing the joystick down decreases the value Press ENTER to accept the value After entering the relay state the display will default back to the Set Relay 1 Alarm Threshold Menu The display will scroll the following Push the joystick down to access the next sub menu Set Relay 2 Alarm Threshold ...

Page 35: ...nd 25 5 Pushing the joystick up increases the value and pushing the joystick down decreases the value Press ENTER to accept the value NOTE The O2 system must have the audio alarm option module installed to access this menu If this option is installed the display will indicate N A not available NOTE The audio can be set into only one alarm level You can choose between alarm level 1 or alarm level 2...

Page 36: ... access this menu push the joystick down to display the Set Alarm Hysteresis menu This will scroll on the digital display Push the joystick right to access the Set Alarm 1 Hysteresis Pushing the joystick again to the right will display a value 0 0 factory default Pushing the joystick up increases the percentage up to a maximum value of 2 5 Adjust the digital display until the desired hysteresis va...

Page 37: ...al display NOTE It is recommended to warm up the Air Check Oxygen monitor for two hours before making any adjustments to the sensor Push the joystick right to access the first sub menu Set Sensor Span will scroll on the display This is the menu that will permit fine adjustment of the ambient oxygen reading to 20 9 Push the joystick right to access the sensor span The display will indicate a value ...

Page 38: ...e Zero menu is not available for the Oxygen monitor This menu was designed for PureAire toxic and corrosive gas monitors When selected nothing will happen Push the joystick Left to leave this menu 5 5 11 Main Operation Mode To select the main menu from any sub menu push the joystick left until the Main Menu appears The digital display will indicate the following Set Sensor Span 20 9 Sensor Adjustm...

Page 39: ...heck O2 monitor PureAire recommends the use of nitrogen This can be purchased from your gas supplier or the gas supplier listed below 6 1 2 Sensor Verification Equipment This can be purchased from your gas supplier or from the gas supplier listed below Part Number Description Quantity Calgaz Air Liquide Nitrogen 103 liter cylinder 99 99 p n CZF6D400281 1 Calgaz Air Liquide Regulator Model 715 500 ...

Page 40: ...mbient oxygen levels of 20 9 To access this menu push the joystick down to display the Sensor Adjustment menu This will scroll on the digital display NOTE It is recommended to warm up the Air Check Oxygen monitor for two hours before making any adjustments to the sensor Push the joystick right to access the first sub menu Set Sensor Span will scroll on the display This is the menu that will permit...

Page 41: ...e oxygen sensor To see a true zero oxygen level the entire Air Check O2 monitor needs be completely immersed into a zero oxygen environment Covering the holes will help to prevent dilution of the span gas to ambient air 6 2 2 Sensor Verification to a known concentration of Oxygen When testing the O2 monitor to a known concentration of oxygen the sensor inlet has a compression tube fitting designed...

Page 42: ... gas to fully saturate the sensor cell CAUTION For best results the Oxygen monitor should be protected from wind and high airflow when gas calibrating with test gas NOTE To see a true zero the entire Air Check O2 monitor needs be completely immersed into a zero oxygen environment O2 monitor Connected to gas cylinder ...

Page 43: ...PureAire Monitoring Systems Inc 40 7 0 Appendix ...

Page 44: ...PureAire Monitoring Systems Inc 41 How to convert 4 20mA current output to a 1 5 VDC voltage output PureAire O2 Monitor 4 20mA output User PLC input Attach 250 ohm resistor to the PLC or device input ...

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