PureAire Monitoring Systems Air Check Advantage Ex Instruction Manual
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PureAire Monitoring Systems Air Check Advantage Ex Instruction Manual

Methyl iodide monitor
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Air Check Advantage Ex
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

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Summary of Contents for PureAire Monitoring Systems Air Check Advantage Ex

  • Page 1 Air Check Advantage Ex 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...
  • 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 carried out by qualified personnel only.

  • Page 4: Table Of Contents

    PureAire Monitoring Systems, Inc. Table of Contents 1: Introduction ..................4 1.1 Component Identification…………………………………….. 5 2: Specifications ..................10 2.1 Performance Specifications............10 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 Methyl iodide Default Settings .........

  • Page 5: 1: Introduction

    PureAire Monitoring Systems, Inc. 1: Introduction The Air Check Ex Methyl iodide Monitor is a compact extractive gas sampling system designed for the continuous detection and measurement of toxic gas leaks. It is capable of sampling over distances of up to 100 feet (33 meters).

  • Page 6: Component Identification

    PureAire Monitoring Systems, Inc. 1.1 Component Identification 1.1.1 Overall System Composition The Air Check Ex Methyl iodide 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.
  • Page 7 PureAire Monitoring Systems, Inc. 1.1.2 Front View Control Panel Local Digital Display Flowmeter 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.
  • Page 8 PureAire Monitoring Systems, Inc. 1) Main Power Connector 1.1.3 Internal View 2) Pyrolizer Assembly 4) Control Electronics / Readout 5) Flow Meter 3) Pyro & Pump Drive PCB 7) CH I sensor cell 6) Flow chamber 9) 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. Power Analog 1.2.5 Transmitter Interior Terminal Block Common (Terminated at Factory) mA output + 24VDC (Terminated at Factory) 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 1 Common Pin 2 Pyrolizer Filament connector Pyrolizer Drive Board Main 24VDC Power Connector (Do Not Remove Jumper) Sample Pump Main power connection (To be terminated by customer) Pump and Pyrolizer Drive Assembly Status LED’s...

  • Page 11: 2: Specifications

    PureAire Monitoring Systems, Inc. 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 Ex Methyl iodide Monitor Sensor Type: Renewable electrochemical cell. Field rechargeable.

  • Page 12: Signal Outputs

    PureAire Monitoring Systems, Inc. 2.3 Signal Outputs Local Display: Digital display calibrated for AN. The range is stated on the serial number and can be accessed via the joystick on the front panel. Analog Output: DC 4-20 mA Relay Output: Dual level user selectable alarm relays and one fault relay Rated, 2amps @ 30VDC;...

  • Page 13: Air Check Methyl Iodide Default Settings

    PureAire Monitoring Systems, Inc. 2.6 AirCheck Ex Methyl iodide Default Factory Settings The Air Check Ex Methyl iodide Monitor is shipped with factory defaults for the alarm relay settings. The following are the factory defaults: Menu Function Factory Default Menu Defined Alarm 1 = 1.0ppm...

  • Page 14: 3: Installation

    PureAire Monitoring Systems, Inc. 3: Installation 3.1 Site Requirements The Air Check Ex Methyl iodide monitoring system should be mounted in an area free of vibration and electrical noise or interference. If possible, avoid areas with continuous high temperatures or relative humidity.

  • Page 15: Wiring

    PureAire Monitoring Systems, Inc. 3.4 Wiring 3.4.1 24 VDC Power Connect the 24 VDC power cable to the terminal block located on the inside of the instrument. The terminal connections are as follows: (Pin 6) +24V, (Pin 5) Common, and (Pin 5) shield. A three- wire shielded cable (3-conductor, 18 AWG stranded shielded) General Cable #E2203S.30.86 or...

  • Page 16: Initial Startup

    PureAire Monitoring Systems, Inc. 3.5 Initial Startup Once installation of the gas detector has been completed, it is ready for startup. The following procedures should be performed before putting the instrument into operation: 1. Check the integrity of all wiring. Confirm the power polarity.

  • Page 17: 4: Air Check Methyl Iodide Programming

    PureAire Monitoring Systems, Inc. Air Check Ex Methyl iodide Monitor Programming The Methyl iodide 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. To access the menus a factory set password is used.

  • Page 18: Program Flowchart

    PureAire Monitoring Systems, Inc. 4.3 Program Flowchart Methyl iodide Enter PassCode OK PassCode OK Set 4-20mA Set 4mA Set 20mA NOTE: All numerical values shown are only examples and are not Factory Force loop Defaults Not Available Format Set Formats...
  • Page 19 PureAire Monitoring Systems, Inc. Set Alarm Set Alarm 1 Normal Threshold PassCode OK Polarity Invert Set Alarm 2 Normal Invert Set Audio Not available Alarm Set Latching Set Latching Nonlatch NOTE: All Latching numerical values shown are only Set Latching...
  • Page 20 PureAire Monitoring Systems, Inc. Alarm Delay Zero Suppression 0.5ppm 1.0 PPM Set Alarm Set Relay 1 PassCode OK Thresholds Set Relay 2 5.0 PPM Set Audio Not Available Set Alarm 0.0 ppm Set Alarm 1 Hysterisis Set Alarm 2 0.0 ppm...
  • Page 21 PureAire Monitoring Systems, Inc. Enable Auto Not Available Zero Cal Start Zero Not Available Set Module Zero Enable Zero Not Available Tracker PassCode OK Manage Enter New User Passwords Password Re-enter New User Password Enabled Enable User Password Disabled...

  • Page 22: Entering The Password

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

  • Page 23: Changing The User Password

    PureAire Monitoring Systems, Inc. 6. Push the joystick in the center to enter the password. If you entered it correctly the display will scroll Password OK..Password OK…… NOTE: If an incorrect password has been entered, the display will indicate Password Failed. Push the joystick to the left to access the monitoring mode.
  • Page 24 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 25 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 26: Entering The Menus

    PureAire Monitoring Systems, Inc. 4.6 Entering the Menus The Air Check Ex Methyl iodide monitor is supplied with main menus with sub menus to adjust mA outputs, alarm relay settings, sensor adjustments and zero suppression for AN. 4.6.1 Set 4-20mA loop .Set 4-20mA loop..
  • Page 27 PureAire Monitoring Systems, Inc. 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 Methyl iodide Monitor.
  • Page 28 PureAire Monitoring Systems, Inc. …Set Formats… 0.0ppm This menu will permit the setting of the two alarm relays and the fault relay settings 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: ..Format Relay 1…...
  • Page 29 PureAire Monitoring Systems, Inc. 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 from NORMAL to INVERT. Press ENTER to accept the value.
  • Page 30 PureAire Monitoring Systems, Inc. After entering the relay state the display will default back to the Set Formats menu. The display will scroll the following: ..Set Formats... 20.9 4.6.3 Set Alarm Threshold Polarity Alarm Threshold Polarity determines if an alarm concentration is set above or below a threshold value. For example, if an alarm of 2.0ppm for an is selected, the Alarm Threshold Polarity must be set to Normal for...
  • Page 31 PureAire Monitoring Systems, Inc. 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 Methyl iodide Monitor.
  • Page 32 PureAire Monitoring Systems, Inc. 4.6.4 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 latching or non-latching state. In a latching state, the relay will remain activated until the user manually selects the Enter Key.
  • Page 33 PureAire Monitoring Systems, Inc. Push the joystick down to select the next relay to be adjusted. The display will scroll the following, Set Latching Relay 2. ..Set Latching Relay 2… 0.0ppm This is the menu at which to adjust the second level alarm relay state on the Methyl iodide Monitor.
  • Page 34 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 35 PureAire Monitoring Systems, Inc. To change this value, push the joystick right to display the Zero Suppression screen. The display will indicate a value between 0 and 100%. Pushing the joystick up increases the value and pushing the joystick down decreases the value. Press ENTER to accept the value.
  • Page 36 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… 0.0ppm 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.

  • Page 37: 5: Maintenance & Calibration

    PureAire Monitoring Systems, Inc. 5: Maintenance & Calibration Only qualified personnel should perform maintenance and calibration 5.1 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, since temperature, humidity, gas concentrations, and dust all affect system operation.

  • Page 38: Sensor Cell Removal And Installation

    PureAire Monitoring Systems, Inc. 5.3 Sensor Cell Removal and Installation 5.3.1 Sensor Removal DO NOT Power Down the monitor. This procedure should be performed with the monitor powered ON to maintain the Pyrolizer temperature. 1. Remove the sensor by gently rocking the sensor side-to-side and simultaneously pulling it up from the flow chamber.

  • Page 39: Electrolyte Replacement

    PureAire Monitoring Systems, Inc. 5.4 Electrolyte Replacement (For Renewable Methyl iodide sensor)  CAUTION: Always wear protective gloves and safety glasses when replacing sensor electrolyte. Be sure to adhere to your facility’s chemical handling guidelines and procedures. 1. Remove the sensor as outlined in section 6.1.1.
  • Page 40 PureAire Monitoring Systems, Inc. 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.
  • Page 41 PureAire Monitoring Systems, Inc. 8. Place the retainer ring over the membrane and then place the box nut over the retainer ring. Turn clockwise until hand tight; continue tightening until the box nut can no longer be moved by hand.
  • Page 42 PureAire Monitoring Systems, Inc. 10. Insert the pressure compensation plug into the port. PRESSURE COMPENSATION PORT 11. Reinstall the sensor 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.

  • Page 43: System Calibration

    PureAire Monitoring Systems, Inc. 5.5 System Calibration The Air Check Ex Methyl iodide Monitor requires periodic calibration with the appropriate standard gas. Calibration should be performed whenever:  Six months has passed without calibration  The sensor cell electrolyte is replaced 5.4.1 Gas Generation and Calibrating Kits...
  • Page 44 PureAire Monitoring Systems, Inc. …Sensor Adjustment… 0.0ppm There are 5 sub menus in the Sensor Adjustment Menu. Menus 1, 2, 3 & 5 are not used for the Methyl iodide monitor. Menu 4 is the only menu used during calibration and sensor adjustment.
  • Page 45 PureAire Monitoring Systems, Inc. 1. Fill the calibration gas Tedlar bag with the methyl iodide cylinder span gas. IMPORTANT: Be sure to perform the calibration before the concentration of the gas changes. Also, verify that the concentration of the calibration gas is the same after calibration as it was before.
  • Page 46 PureAire Monitoring Systems, Inc. Methyl iodide Span gas cylinder On Demand Regulator...

  • Page 47: 6: Appendix

    PureAire Monitoring Systems, Inc. 6: Appendix Pyrolizer Assembly The pyrolizer insulation temperature can exceed 150F and can cause burns if touched. Please power down the system when working inside the enclosure. 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.

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