PureAire Monitoring Systems Air Check Instruction Manual
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PureAire Monitoring Systems Air Check Instruction Manual

Carbonyl sulfide monitor
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Air Check Advantage
Carbonyl Sulfide Monitor
Instruction Manual
Part number 99156 (0-100ppm)
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

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Summary of Contents for PureAire Monitoring Systems Air Check

  • Page 1 Air Check Advantage Carbonyl Sulfide Monitor Instruction Manual Part number 99156 (0-100ppm) 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...
  • Page 2 That’s just one way PureAire takes that extra step to ensure your complete satisfaction. Thank you again for investing in PureAire Monitoring Systems for your monitoring needs and I’m proud to welcome you to our family of valued and satisfied customers.
  • Page 3 PureAire Monitoring Systems, Inc. Read Before Operating This gas monitoring system has been designed to provide long-term reliable performance. We recommend the following basic precautions while installing, operating and maintaining this device. ▪ Read this “Guide to Operation and Installation” carefully. Installation, maintenance, calibration and testing should be performed by qualified personnel only.

  • Page 4: Table Of Contents

    2.2 Gas Detection System ..............10 2.3 Signal Outputs ................11 2.4 Electrical Requirements ............. 11 2.5 Physical Characteristics ............. 11 2.6 Air Check Carbonyl Sulfide Default Settings ......12 3: Installation ..................13 3.1 Site Requirements ..............13 3.2 Mounting ..................13 3.3 Sensor Installation ..............

  • Page 5: 1: Introduction

    Visual dual level alarm and fault LED ▪ 4-20 mA output ▪ Disposable electrochemical sensor cell ▪ Supervised electronics monitors sensor, pyrolizer and sample pump  NOTE: The Air Check Carbonyl Sulfide enclosure is NOT rated for Class 1, Division 1 Groups B, C & D...

  • Page 6: Component Identification

    1.1 Component Identification 1.1.1 Overall System Composition The Air Check Carbonyl Sulfide Monitor may be integrated into the overall hazardous gas monitoring system. As a result, it may be remotely located for the monitoring of process areas and other environments where access to the instrument for maintenance or service may be restricted. It may also be used as a stand-alone detection system.
  • Page 7 PureAire Monitoring Systems, Inc. 1.1.2 Front View Control Panel Local Digital Display Joystick Alarm & Fault (LED’s) AL 2 , AL 1 & Fault 1. Local Digital Display — During normal operation, displays the name and concentration of the target gas. Also displays alarm messages and programming/calibration menus and information.
  • Page 8 PureAire Monitoring Systems, Inc. 1.1.3 Internal View Main Power Connector Pyro Filament Drive PCB Pyrolizer Assembly Control Electronics / Readout Flow chamber (located under the sensor cell) Carbonyl Sulfide sensor cell Sample Pump 1. Main Power Connector — Connector for 24VDC power input. See section 3: Installation for more information.
  • Page 9 PureAire Monitoring Systems, Inc. 1.1.4 Transmitter Interior 1. Power / Analog output Terminal Block Fuse* (Field replaceable) Common Common mA output + 24 VDC + 24 VDC 1. Power / Analog Terminal Block — This terminal block is where the 24VDC power and 4-20 mA analog output connection is made.
  • Page 10 PureAire Monitoring Systems, Inc. + 24VDC Pin 6 Common Pin 5 Pyrolizer Drive Board Main 24VDC Power Connector Sample Pump NOTE: DO NOT Remove the shorting pin connected to pins 5 and 4. Main power connection Pump and Pyrolizer Drive Assembly...

  • Page 11: 2: Specifications

    2: Specifications  NOTE: Due to our commitment to continual product improvement, all specifications are subject to change without notice. 2.1 Performance Specifications Models: Air Check Carbonyl Sulfide Monitor Sensor Type: Disposable electrochemical cell. Response Time: Within 60 seconds to T90.

  • Page 12: Signal Outputs

    PureAire Monitoring Systems, Inc. 2.3 Signal Outputs Local Display: Digital display calibrated for Carbonyl Sulfide. The range is stated on the model label and can also be accessed via the joystick on the front panel. Analog Output: DC 4-20 mA...

  • Page 13: Air Check Carbonyl Sulfide Default Settings

    PureAire Monitoring Systems, Inc. 2.6 AirCheck Carbonyl Sulfide Default Factory Settings The Air Check Carbonyl Sulfide Monitor is shipped with factory defaults for the alarm relay settings. The following are the factory defaults: Menu Function Factory Default Menu Defined Alarm Thresholds Alarm 1 = 5.0ppm...

  • Page 14: 3: Installation

     NOTE: The Air Check Carbonyl Sulfide Monitor is NOT designed for installation in hazardous areas. 3.2 Mounting The Air Check is designed primarily for wall mounting and should be installed no closer than 36 inches (915 mm) above floor level. If mounted outdoors, keep direct sunlight off the enclosure. 3.3 Sensor Installation The Carbonyl Sulfide sensor cell is connected to the flow chamber at the factory.

  • Page 15: Initial Startup

    Pins 1, 2 and 3 are not used. 3.4.2 Alarm Relays The Air Check monitor incorporates two gas concentration alarm relays and one system fault relay. These relays may be wired for normally open (N.O.) or normally closed (N.C.) operation and are Rated, 2amps @ 30VDC;...
  • Page 16 3.5.1 Pump Adjustment The Air Check Carbonyl Sulfide Monitor has a built in digitally controlled flow-controlled sample pump. The pump flow is set at the factory and should not require adjustment. It has a range to accommodate tubing lengths up to 100 feet. Flow rate is between 0.2 and 0.25 cc/min.

  • Page 17: 4: Air Check Carbonyl Sulfide Programming

    PureAire Monitoring Systems, Inc. 4: Air Check Monitor Programming The Air Check Carbonyl Sulfide 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. 4.3 Program Flowchart...

  • Page 19: Entering The Password

    PureAire Monitoring Systems, Inc. 4.4 Entering the Password The Air Check Carbonyl Sulfide monitor is supplied with a factory set password to prevent unauthorized access to The Password is 557. the menus. The following explains how to enter the password.

  • Page 20: Changing The User Password

    From this mode you can reenter the password again. 4.5 Changing the User Password The Air Check Carbonyl Sulfide 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 21 PureAire Monitoring Systems, Inc. 4. 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.
  • Page 22 PureAire Monitoring Systems, Inc. 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.

  • Page 23: Entering The Menus

    PureAire Monitoring Systems, Inc. 4.6 Entering the Menus The Air Check Carbonyl Sulfide monitor is supplied with main menus with sub menus to adjust mA outputs, alarm relay settings, sensor adjustments and zero suppression. 4.6.1 Set 4-20mA loop .Set 4-20mA loop..
  • Page 24 Push the joystick down to access the next sub menu; Set 20mA Span will scroll..Set 20mA Span… This is the menu at which to adjust the 20mA output being sent from the Air Check Monitor. To change this value, push the joystick right to display the 20mA span setting. The display will indicate a value between 0 and 255 counts.
  • Page 25 ..Format Relay 1… 20.9% This is the menu at which to adjust the first level alarm relay state on the Air Check AN Monitor. To change this value, push the joystick right to display the relay state. The display will Indicate NORMAL.
  • Page 26 Format Fault Relay. ..Format Fault Relay... 0.0ppm 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 NORMAL.
  • Page 27 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 Air Check Carbonyl Sulfide Monitor. ..Set Alarm 1 Polarity...
  • Page 28 Push the joystick down to access the next sub menu; Set Alarm 2 Polarity will scroll on the display. This is the menu at which to adjust the second level alarm polarity state on the Air Check Carbonyl Sulfide Monitor. ..Set Alarm 2 Polarity ..
  • Page 29 ..Set Latching Relay 1… 0.0ppm This is the menu at which to adjust the first level 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 LATCH.
  • Page 30 ..Set Latching Relay 2… 0.0ppm This is the menu at which to adjust the second level 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 LATCHING.
  • Page 31 PureAire Monitoring Systems, Inc. 4.6.5 Set Alarm Delay Push the joystick down to access the next main menu, Alarm Delay. The display will scroll the following: …Alarm Delay… 0.0ppm This is the amount of time an alarm level concentration of oxygen must be present before the instrument’s gas concentration alarm(s) will be activated.
  • Page 32 PureAire Monitoring Systems, Inc. 0.5 PPM 0.0 ppm After entering the zero suppression value, the display will default back to the Zero Suppression menu and the display will scroll the following: …Zero Suppression… 0.0ppm 4.6.7 Set Alarm Thresholds ..Set Alarm Thresholds..
  • Page 33 PureAire Monitoring Systems, Inc. This is the gas concentration at which the instrument’s second level 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 00.0% and full scale.

  • Page 34: 5: Maintenance & Calibration

    5.2 Loss of Power Indication In the event the Air Check Carbonyl Sulfide Monitor loses VDC power, the local display will go blank and the 4-20 mA analog output signal drops to 0 and the system status alarm relay de- energizes.

  • Page 35: Sensor Cell Removal And Installation

    PureAire Monitoring Systems, Inc. 5.3 Sensor Cell Removal and Installation Sensor Cell Connector board Sensor Cell connector board fastening screws COS Sensor PN 48002 Sensor cell assembled in the flow cap COS sensor Flow Cap O-Ring 5.3.1 Carbonyl Sulfide Sensor Cell Assembly The Carbonyl Sulfide sensor has four male pins that plug into the sensor cell connector board.
  • Page 36 PureAire Monitoring Systems, Inc. Carefully insert the new Carbonyl Sulfide sensor into the top of the flow cap. Please verify that the center pin is aligned with the locator mark Carefully plug the Carbonyl Sulfide sensor into the sensor connector board.

  • Page 37: System Calibration

    PureAire Monitoring Systems, Inc. 5.4 System Calibration The Air Check Carbonyl Sulfide Monitor requires periodic calibration with the appropriate standard gas. Calibration should be performed whenever: • Six months has passed without calibration • NOTE: For higher accuracy more frequent dynamic gas calibration is required.
  • Page 38 PureAire Monitoring Systems, Inc. 5.4.2 Initial Preparation and span gas preperation 1. Connect the RMF regulator to the COS span gas cylinder. 2. Connect the Tedlar gas sample bag to the regulator. 3. Turn on the regulator and fill the span gas bag.
  • Page 39 4. After calibration, disconnect the span gas from the monitor and permit the digital display to return to zero. NOTE: The Air Check Carbonyl Sulfide monitor has an internal pyrolizer that converts the gas to bromine. Typical fall times can range from 1 to 4 minutes depending on the exposure concentration. The higher the concentration, the longer the fall time to zero.
  • Page 40 PureAire Monitoring Systems, Inc. Joystick for adjusting span Push increase the reading and DOWN decrease the reading Carbonyl Sulfide Waste Carbonyl Sulfide Span Gas Bag 232-05A Gas Bag 232-05A...

  • Page 41: 6: Appendix

    PureAire Monitoring Systems, Inc. 6: Appendix Location of 4ea. Front Cover Fastening screws The Air Check monitor has 4 ea. Front Cover captive fastening screws on each corner of the front cover. Use a Phillips head screwdriver to unfasten the screws to remove the front cover.
  • Page 42 Air Check ✓ Sample Inlet Filter (p/n 23102) To protect the pump and pyrolizer from dust, the use of a particulate filter is supplied. On installation, attach the particulate filter to the inlet using the tygon sample tubing supplied. Ensure the correct flow by aligning the arrow towards the inlet connector.

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99156

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