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PureAire Monitoring Systems, Inc.

11.

Audio Horn

— This optional built-in horn is a 90dB high pitched audio

sound that will activate when the oxygen levels go below the selected alarm
thresholds. The audio alarm is non-latching and will automatically turn off
when the oxygen levels go above the alarm thresholds

NOTE

The audio alarm is an immediate alarm. Oxygen levels must recover

above the alarm thresholds before the horn turns off. There is no

alarm delay function available.

1.2.5 Transmitter Interior

Power Analog Terminal Block

— This terminal block is where the 24VDC

power and 4-20 mA analog output connection is made.

NOTE:

PureAire has added additional contacts for +24VDC power and Common to

accommodate additional wiring for remote horns and strobes

Sensor Cell Connector —

This connector is where the Oxygen sensor cell

is connected.

NOTE:

Never connect the oxygen sensor to this connector

while the monitor is powered. This will damage the oxygen sensor

1. Power
Analog output
Terminal Block

Fuse

(Field
replaceable)

Common
Common
mA output
+ 24 VDC
+ 24 VDC

2. Sensor cell
connector

Содержание 99040

Страница 1: ...y Monitor 0 30 Instruction Manual For model DRA Part number 99040 PureAire Monitoring Systems Inc 557 Capital Drive Lake Zurich Illinois 60047 Phone 847 726 6000 Fax 847 726 6051 Toll Free 888 788 8050 pureairemonitoring com ...

Страница 2: ...e 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 your technicians...

Страница 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...

Страница 4: ...enance Schedule 13 4 4 Loss of Power Indicator 13 4 5 Alarm Reset 13 5 Air Check O2 Monitor Programming 14 5 1 Joystick Operation 14 5 2 Program Flowchart 15 5 3 Entering the Password 19 5 4 Changing the User Password 20 5 5 Entering the Menus 23 5 5 1 Set 4 20mA Loop 23 5 5 2 Set Formats 25 5 5 3 Set Alarm Threshold Polarity 27 5 5 4 Set Latching 29 5 5 5 Resetting a Latching Alarm 32 5 5 6 Set A...

Страница 5: ...loose sensitivity when the weather or temperature changes The electronics are housed in a Nema 3 housing 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 m...

Страница 6: ...tal display for showing the oxygen levels in percent 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...

Страница 7: ...r 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 with Relay Option 10 Alarm Indicators 3 multi colored LED indicators for showing Alarm level 1 Orange LED Alarm level 2 Red LED Fault Alarm Yellow LED 1 2 3 Side View Exterior with Audio Alarm 6 2 9 6 3 1 9...

Страница 8: ...s no alarm delay function available 1 2 5 Transmitter Interior 1 Power Analog Terminal Block This terminal block is where the 24VDC power and 4 20 mA analog output connection is made NOTE PureAire has added additional contacts for 24VDC power and Common to accommodate additional wiring for remote horns and strobes 2 Sensor Cell Connector This connector is where the Oxygen sensor cell is connected ...

Страница 9: ...8 Enclosure Mounting Feet Relay 2 Relay 1 Fault Relay Remote NC C NO NC C NO NC C NO Reset Horn Connector Oxygen sensor connector Mounting Feet Can be oriented in any direction Feet can also be removed for mounting the O2 monitor flush with a wall or other surface ...

Страница 10: ...1 3 2013 LVD 2 2 Gas Detection System Type Long Life Zirconium Oxide Sensor Cell Range 0 30 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 serial number and can be accessed via the joystick on t...

Страница 11: ... Non latching Alarm 2 Non latching Audio Non latching Do you want the alarm to automatically reset non latching or do you want to manually reset the alarm latching Alarm Delay Alarm 5 seconds How long do you want to wait until the alarms activate Zero Suppression 000 0 00 Refer to section 4 5 6 This function is Not Enabled on the Oxygen monitor Set Alarm Thresholds Alarm 1 19 5 Alarm 2 18 0 Audio ...

Страница 12: ...heck 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 3 2 2 Air Check O2 monitor The transmitter and sensor should be installed in a location where gas leaks are likely to occur or where released gases may accumulate It should be mou...

Страница 13: ...ck inside the transmitter housing These connections are made as follows Pin Connection Description Common Signal Ground 0V Common Signal Ground 0V MA Signal Out DC 4 20mA Output Power DC 24V Input Power DC 24V Input NOTE PureAire has added additional contacts for 24VDC power and Common to accommodate additional wiring for remote horns and strobes Caution DO NOT connect to a powered current loop re...

Страница 14: ...he 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 will continue to reach its operating temperature for approximately 30 minutes and the reading displayed will slowly increase to ambient Do not make any adjustments to the reading until after the monitor has been powered for at least an hour NOTE When ...

Страница 15: ...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 Analog output drops to 2 mA Fault Relay activates and turns off when system is in the Oxygen operation mode Availab...

Страница 16: ...O2 monitor only 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 It the Air Check O2 monitor is supplied with t...

Страница 17: ...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 s Next Plus Pushing...

Страница 18: ... 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 ...

Страница 19: ...nvert Alarm Delay 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 NOTE All numerical values shown are only examples and are not Factory Defaults NOTE Zero suppression function is not available for Oxygen Invert Latch ...

Страница 20: ... 19 5 Set Relay 2 Alarm 18 0 Set Audio Alarm 19 5 Set Alarm Thresholds PassCode OK Set Alarm 1 Hysteresis 0 0 Set Alarm 2 Hysteresis 0 0 Set Audio Alarm Hysteresis Alarm Hystereses 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 ...

Страница 21: ...PureAire Monitoring Systems Inc 18 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 ...

Страница 22: ...ic 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 down...

Страница 23: ...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...

Страница 24: ...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 ...

Страница 25: ...us 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 entered correctly 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...

Страница 26: ...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...

Страница 27: ...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...

Страница 28: ... from normally de energized state Normal to normally energized 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 Indica...

Страница 29: ... state The display will Indicate INVERT Pushing the joystick down will change the relay 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 ...

Страница 30: ...eading goes below 19 0 For toxic and corrosive gases selecting 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 Th...

Страница 31: ...y state from INVERT to NORMAL 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 Air Check O2 Mo...

Страница 32: ... activate the horn when the relays activate choose the AUTO mode After entering the relay state the display will default back to the Set Audio Alarm Polarity menu The display will scroll the following 5 5 4 Set Latching This is the menu at which to adjust the relay alarm state for the two gas alarm relays and the individual instrument fault relay The selection permits setting the relays to a latch...

Страница 33: ...CH Pushing the joystick down will change the relay state from LATCHING to NON LATCHING 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 down to se...

Страница 34: ...g Push the joystick twice to select the Audio Alarm relay to be adjusted The display will scroll Set Latching Audio Alarm This is the menu at which to adjust the Audio alarm relay state on the Air Check O2 Monitor 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 To change this value push...

Страница 35: ... of time an alarm level concentration of oxygen must be present before the instrument s gas concentration alarm s will be activated This menu will permit setting a user selected time delay for activating alarm relays 1 and 2 You can select from 0 seconds up to 255 seconds after an alarm level has been exceeded before the alarm relays to activate To change this value push the joystick right to disp...

Страница 36: ...g the level at which the audio alarm will activate NOTE To activate the audio alarm the AirCheck O2 monitor must have the audio alarm option From this main menu pushing the 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 c...

Страница 37: ... Threshold Menu The 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 This is the gas concentration at which the instrument s audio alarm will be activated To change the displayed value push the joystick to the right to display the second level alarm setting The display will indicate a value between 00 ...

Страница 38: ...en defines the alarm and dead band for an action to occur For example if you require a valve to close at 14 9 oxygen level and to reopen again at 15 5 oxygen level you would set the Alarm Threshold at 15 2 and set the hystersis value at 0 3 Average Alarm set point 15 2 Hysteresis 0 3 14 9 Valve Off Average Alarm set point 15 2 Hysteresis 0 3 15 5 Valve On To access this menu push the joystick down...

Страница 39: ...ired hystereses value is selected 5 5 10 Set Sensor Adjust This menu will permit fine tuning of the oxygen readout to a known concentration of Oxygen It is recommended to adjust the oxygen display to ambient 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 O...

Страница 40: ...s ENTER to accept this value The digital display will revert back to Set Sensor Span Press the joystick to the left to revert back to the Sensor Adjustment menu NOTE The Set Module 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 Mo...

Страница 41: ...2 monitor PureAire recommends the use of nitrogen This can be purchased from your gas supplier or from the gas company 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 cc...

Страница 42: ...gital 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 first sub menu Set Sensor Span will scroll ...

Страница 43: ...o 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 for connecting the sample tubing...

Страница 44: ... 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 ...

Страница 45: ... PureAire O2 monitors have a built in 4 20mA output The remote display alarm easily connects to the monitor s input power and mA output connection An 18 AWG three conductor shielded control and instrumentation cable Belden 8770 or equivalent is recommended for the connection The maximum permissible cable length is 250 feet You can simultaneously connect one remote display to one Air Check Oxygen m...

Страница 46: ...te the front panel from the case Mount the case to a wall or other flat surface There are 4ea through holes for fastening the case The case is designed to be flush mounted NOTE The front cover can be removed from the case by gently pulling on the plastic hinges they will stay connected to the front cover To connect the front cover just push the plastic hinge into the case ...

Страница 47: ... for Below If the readings go below ambient 20 9 then the internal horn and LED s will activate When used with our toxic gas monitors the polarity is set to Above Normally set at the factory Max distance 250 feet CAUTION Make all wire terminations with the power OFF Failure to do so can damage the oxygen monitor and remote display and void your warranty 18 AWG three conductor shielded control and ...

Страница 48: ...tion any alarm will activate the audible horn To disable the internal horn turn the switch to Off How to Setup and Operate the Remote Display CAUTION Entering the set up menus will disable the real time oxygen readings After wiring the remote display to your Oxygen monitor turn on the power to your oxygen monitor During the warm up the remote display will illuminate a yellow fault LED and the disp...

Страница 49: ...to match the reading on the oxygen monitor use the Set 20mA Span menu Push the joystick up or down until both displays match CAUTION If the oxygen monitor is in the measuring mode and the ZERO push button is pressed an Err will be displayed on the remote display and no readings will be recorded If the SPAN push button is pressed in the measuring mode the remote display will automatically adjust to...

Страница 50: ...VAC 24 VDC 1 amp Regulated power supply NC Common NO Common Oxygen Main Power Board Alarm 2 Alarm 1 Oxygen Fault Relay Board Federal Signal Horn Strobe 42002 This drawing shows how to connect a remote Horn and strobe to PureAire s Oxygen monitor with the Alarm relay 1 set to a Normally Open position Note Federal Signal Horn Strobe or equivalent 18 AWG two conductor stranded control and instrumenta...

Страница 51: ...nal Strip External relay coil Relay coil voltage rating must match external voltage source External relay using internal 24 VDC power supply COM N O Relay 1 or Relay 2 Terminal Strip 24 VDC 24 VDC External 24 VDC relay coil Install 1N4004 or similar diode across coil CAUTION PureAire Monitoring Systems does not recommend using 120VAC or higher voltage inside the monitor Use 24 VAC or 24 VDC if pos...

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