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Related Manuals for PureAire Air Check O2 99066
Summary of Contents for PureAire Air Check O2 99066
- Page 1 Air Check Deficiency Monitor 0-25% Instruction Manual RS-485 Part number 99066 1140 Ensell Road Lake Zurich, Illinois 60047 Phone: 847-726-6000 Fax: 847-726-6051 Toll-Free: 888-788-8050 pureairemonitoring.com Rev 4.11 April 2023...
- Page 2 Our goal is to provide the best after sale service and support in the industry. That is just one way PureAire takes that extra step to ensure your complete satisfaction.
- Page 3 Do not expose the oxygen sensor directly to a water stream. In areas requiring wash downs, cover and protect the monitor and power supply. Contact PureAire for details on a waterproof enclosure. 8. The Factory Password for entering the menus is...
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Page 4: Table Of Contents
PureAire Monitoring Systems, Inc. Table of Contents 1: Introduction ........................4 1.1 Key Features ................ 4 1.2 Component identification ............ 5 2: Specifications ........................9 2.1 Performance Specifications ..........9 2.2 Gas Detection System ............9 2.3 Signal Outputs ..............9 2.4 Electrical Requirements ............ -
Page 5: 1: Introduction
Each system consists of a long life zirconium oxide sensor cell and three-wire transmitter. The Air Check O 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 manual covers the installation, operation, and maintenance of the Air Check O... -
Page 6: Component Identification
PureAire Monitoring Systems, Inc. 1.1.3 Calibration The Air Check O monitor incorporates a stable zirconium oxide sensor that rarely requires calibration. Changing barometric pressure changes or changes in temperature and humidity do not affect the zirconium oxide oxygen cell. The earth is a wonderful source of calibrated oxygen at 20.9%, therefore under ambient conditions verification of the Air Check O... - Page 7 PureAire Monitoring Systems, Inc. Transmitter Cover — A removable cover that protects the interior of the transmitter. Transmitter Cover Fasteners — There are 4 captive screws secure the transmitter cover in place. Electronics Fasteners — These captive screws secure the electronics to the enclosure 1.2.2 Front View Exterior with Relay Option...
- Page 8 PureAire Monitoring Systems, Inc. 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.
- Page 9 PureAire Monitoring Systems, Inc. 1.2.7 Alarm Relay Board Relay 2 Relay 1 Fault Relay Remote NC C NO NC C NO NC C NO Reset RS-485 Connector N.C. Gnd. +Data -Data Horn Connector NOTE: See Appendix for Serial Data Information.
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Page 10: 2: Specifications
Sensor cell failure: Fault relay activated. (Must have Alarm relay option for cell failure to operate) Operating Temp: -40° to 134°F (-40° to +55°C); consult PureAire for lower or higher operating temperatures. Humidity: 0 to 95% RH; consult PureAire for sensors which can operate in 100% condensing RH environments. -
Page 11: System Default Factory Settings
PureAire Monitoring Systems, Inc. 2.6 AirCheck O System Default Factory settings The Air Check O Deficiency Monitor, when supplied with the optional Relay module, is shipped with factory defaults for the alarm relay settings. The following are the factory defaults:... -
Page 12: 3: Installation
30 feet. WARNING: The Air Check monitor is not 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 O... -
Page 13: Wiring
DO NOT connect to a powered current loop receiver. The Air Check Oxygen monitor supplies the current loop power. NOTE: PureAire has added additional contacts for +24VDC power and Common to accommodate additional wiring for remote horns and strobes These connections are made as follows:... -
Page 14: Initial Startup
The instrument should now be powered up. Upon power up, the Air Check O monitor LCD displays the PureAire logo and then starts a 4-minute, (240 second) count down as the current to the zirconium oxide O sensor stabilizes. The monitor will output a 4 mA signal during the entire warm- up period. -
Page 15: 4: Normal Operation
NOTE: All system faults are displayed on the front panel. Each fault has its own specific code to identify the specific problem. Please contact PureAire whenever a fault is displayed. ** When using your own power supply please ensure that the voltage is regulated to 24VDC +/- 0.5 volts. -
Page 16: Routine Maintenance Schedule
PureAire Monitoring Systems, Inc. 4.3 Routine Maintenance Schedule Continuous gas detection systems depended upon to measure and detect hazardous gas leaks in the workplace requires periodic maintenance to ensure proper operation. The frequency with which this routine maintenance is required depends on the environment. The following table is intended to serve as a general guideline for routine maintenance. -
Page 17: 5: Air Check O Monitor Programming
PureAire Monitoring Systems, Inc. 5: Air Check O Monitor Programming The Air Check O Deficiency Monitor is supplied with user selectable settings to adjust the alarm settings, 4 and 20mA output and minor sensor adjustments. The settings are arranged in menus that are accessed by moving the joystick. -
Page 18: Program Flowchart
PureAire Monitoring Systems, Inc. 5.2 Program Flowchart Enter PassCode OK Oxygen Password 20.9% Set 4mA Set 4-20mA PassCode OK Zero loop Set 20mA Span NOTE: All numerical values shown are only examples and are not Factory Not available Defaults Force loop... - Page 19 PureAire Monitoring Systems, Inc. Normal Set Alarm 1 Set Alarm Threshold PassCode OK Polarity Polarity Invert Set Alarm 2 Normal Polarity Invert Set Audio Normal Alarm Polarity Invert Set Latching Nonlatch Relay 1 Latching NOTE: All numerical Latch values shown are...
- Page 20 PureAire Monitoring Systems, Inc. NOTE: Zero suppression function is not Zero PassCode OK available for Suppressio 000 * Oxygen Set Alarm Set Relay 1 19.5% Thresholds Alarm Set Relay 2 18.0% Alarm Set Audio 19.5% Alarm NOTE: All Set Alarm 1 0.0%...
- Page 21 PureAire Monitoring Systems, Inc. Enter Enter New Manage minimum of PassCode OK User Passwords Password Enabled Enable User Password Disabled Reset to Reset User Factory Password Default...
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Page 22: Entering The Password
PureAire Monitoring Systems, Inc. 5.3 Entering the Password The Air Check Oxygen monitor is supplied with a factory set password to prevent unauthorized access The Password is 557. to the menus. The following explains how to enter the password. 1. Push the joystick once to the right. Enter Password will scroll on the first line of the digital display. -
Page 23: Changing The User Password
PureAire Monitoring Systems, Inc. 5.4 Changing the User Password The Air Check Oxygen monitor is supplied with a factory set password to prevent unauthorized access to the menus. The user can change this password and the following explains how to change the password. - Page 24 PureAire Monitoring Systems, Inc. 6. Push the joystick again to the right to select the third 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.
- Page 25 Push the joystick in, (like a doorbell) to reset the password back to 557. Push the joystick left 4 times to go back to the measuring mode. NOTE: If you lose your password Oxygen please contact PureAire with your 20.9% serial number or DTM number...
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Page 26: Entering The Menus
PLC controller or SCADA system. You can also connect the Air Check O monitor to a volt 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: ..Set 4mA zero…... - Page 27 NOTE: The Force Loop function is not available on the Air Check O monitor. It was designed for toxic and corrosive gases. This is the sub menu is only used on PureAire’s toxic and corrosive monitors. …Not Available.. 20.9% Push the joystick to the left brings you back to the pervious menu. The digital display Will scroll the following: ...Force Loop…..
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Page 28: Set Formats
PureAire Monitoring Systems, Inc. 5.5.2 Set Formats This is the menu at which to adjust the relay states for the two gas alarm relays and the individual instrument fault relay. NOTE: The O 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) Push the joystick down to access the next main menu, Set Formats. - Page 29 PureAire Monitoring Systems, Inc. From this main menu, pushing the joystick to the right will select the sub menu and the digital display will scroll the following: ..Format Relay 1… 20.9% Push the joystick down to access the next main menu, Set Formats. The display will scroll the following: …...
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Page 30: Set Alarm Threshold Polarity
PureAire Monitoring Systems, Inc. This is the menu at which to adjust the fault alarm relay state on the Air Check 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 state from INVERT to NORMAL. - Page 31 PureAire Monitoring Systems, Inc. INVERT 20.9% NORMAL 20.9% After entering the relay state, the display will default back to the Set Alarm 1 Polarity menu. The display will scroll the following: ..Set Alarm Polarity.. 20.9% Push the joystick down to access the next sub menu; Set Alarm 2 Polarity will scroll on the display.
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Page 32: Set Latching
PureAire Monitoring Systems, Inc. NOTE: The built-in horn is designed to operate in only one alarm mode. It will activate in either a decreasing alarm or an increasing alarm mode only. The horn activation is immediate any time an alarm threshold is exceeded. - Page 33 PureAire Monitoring Systems, Inc. This menu will permit the setting of the two alarm relays and the fault relay settings from a latching to a non latching state when they are activated. From this main menu, pushing the joystick to the right will select the sub menu and the digital display will scroll the following: ..Set Latching Relay 1…...
- Page 34 PureAire Monitoring Systems, Inc. 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.
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Page 35: Resetting A Latching Alarm
PureAire Monitoring Systems, Inc. NONLATCH 20.9% After entering the fault relay state, the display will default back to the Set Latching menu. The display will indicate the following: ..Set Latching.… 20.9% 5.5.5 Resetting a Latching Alarm To reset a latching alarm relay, you must enter the password correctly and then push the joystick down to enter the reset command. -
Page 36: Set Zero Suppression
PureAire Monitoring Systems, Inc. the fault relay. Any system fault will immediately activate the Fault Relay. 5.5.7 Set Zero Suppression This function is not used on the Oxygen monitor. It is only used to decrease the sensitivity of selected gas sensors. Although the menu permits the changing of settings, it is totally disabled in the Oxygen monitor. - Page 37 PureAire Monitoring Systems, Inc. Push the joystick down to access the next sub menu; Set Relay 2 Alarm Threshold, will scroll on the digital display. ..Set Relay 2 Alarm Threshold… 20.9% This is the gas concentration at which the instrument’s second level alarm will be activated.
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Page 38: Set Alarm Hysteresis
20.9% 5.5.9 Set Alarm Hysteresis PureAire’s oxygen monitor may be used as a control system. When used to regulate oxygen levels the need of a dead band, “hysteresis” may be required for the alarm relays. This menu will permit the setting of the alarm hysteresis to a desired concentration of Oxygen. -
Page 39: Set Sensor Adjust
PureAire Monitoring Systems, Inc. Push the joystick down to access the next sub menu; Set Alarm 2 Hysteresis will scroll on the digital display. Pushing the joystick again to the right will display a value of 0.0%. Pushing the joystick up increases the percentage up to a maximum value of 2.5%. -
Page 40: Main Operation Mode
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. -
Page 41: 6: Maintenance & Cell Verification
0% oxygen. 6.1.1 Sensor Verification Gas For testing the Air Check O monitor, PureAire recommends the use of nitrogen. This can be purchased from your gas supplier or from the gas supplier listed below. -
Page 42: Sensor Verification Procedure
PureAire Monitoring Systems, Inc. 6.2 Sensor Verification Procedure CAUTION: Be sure to observe all safety guidelines when generating and using nitrogen. Under ambient non-oxygen deficient environments, Air Check monitor will indicate a display reading of 20.9%. As the sensor ages, the reading may decrease in value. - Page 43 …Sensor adjustment.. 20.9% 6.2.1 Sensor Verification to Nitrogen PureAire recommends challenging the O monitor with nitrogen every 6 to 12 months. The sensor protector has a ¼” male tube fitting designed for connecting sample tubing from a Nitrogen cylinder. Expose the O...
- Page 44 PureAire Monitoring Systems, Inc. NOTE: The Oxygen monitor should be tested in an upright position to allow the span 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.
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Page 45: 7: Appendix
PureAire Monitoring Systems, Inc. 7.0 Appendix... - Page 46 PureAire Monitoring Systems, Inc. How to convert 4-20mA current output to a 1-5 VDC voltage output PureAire O2 Monitor User PLC input 4-20mA output Attach 250-ohm resistor to the PLC or device input...
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Page 47: Rs-485 Serial Data Information
PureAire Monitoring Systems, Inc. 7.1 RS-485 Serial Data Information The RS-485, half duplex, bidirectional interface consists of standard -D, +D, and Gnd. Connections. There is a 100 ohm terminating resistor jumper that may be used for long cable lengths. Short the two pins of jumper J9 with the provided shunt to enable the 100 ohm resistor. - Page 48 PureAire Monitoring Systems, Inc. Fault: bits 0 and 1 are not used bit 2, monitor in warmup mode bit 3, EEPROM checksum fault bit 4, power supply out of range bit 5, not used bit 6, sensor supply voltage out of range...
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