1. Manuals
  2. Brands
  3. PureAire Manuals
  4. Measuring Instruments
  5. 99088
  6. Instruction manual

PureAire 99088 Instruction Manual

Air check advantage methyl bromide monitor
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Air Check Advantage
Methyl Bromide Monitor
Instruction Manual
Part number: 99088 (0-10ppm) 99072 (0-20ppm)
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

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 99088 and is the answer not in the manual?

Questions and answers

Related Manuals for PureAire 99088

Summary of Contents for PureAire 99088

  • Page 1 Air Check Advantage Methyl Bromide Monitor Instruction Manual Part number: 99088 (0-10ppm) 99072 (0-20ppm) 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 2 847-420-3814. We can provide field service, preventative maintenance programs and training to your technicians in the operation of our equipment. Our goal is to provide the best after sale service and support in the industry. That’s just one way PureAire takes that extra step to ensure your complete satisfaction.
  • Page 3 PureAire Monitoring Systems, Inc. President...
  • Page 4 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 5: Table Of Contents

    PureAire Monitoring Systems, Inc. Table of Contents 1: Introduction ..................5 1.1 Component Identification……………………………………… 6 2: Specifications ..................11 2.1 Performance Specifications............11 2.2 Gas Detection System ..............11 2.3 Signal Outputs ................12 2.4 Electrical Requirements ............. 12 2.5 Physical Characteristics ............. 12 2.6 Air Check Methyl Bromide Default Settings ......

  • Page 6: 1: Introduction

    PureAire Monitoring Systems, Inc. 1: Introduction The Air Check Methyl Bromide 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 7: Component Identification

    PureAire Monitoring Systems, Inc. 1.1 Component Identification 1.1.1 Overall System Composition The Air Check Methyl Bromide 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 8 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 9 PureAire Monitoring Systems, Inc. Main Power Connector 1.1.3 Internal View Pyrolizer Assembly Pyro Filament Drive PCB Control Electronics / Readout Methyl bromide sensor cell Flow chamber Sample Pump Cooling fan Strain relief Exhaust and Inlet 1. Main Power Connector — Connector for 24VDC power input. See section 3: Installation for more information.
  • Page 10 PureAire Monitoring Systems, Inc. 1.2.5 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 11 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 (Terminated by PureAire or...

  • Page 12: 2: Specifications

    Loss of sample pump (4 mA signal drops to 2, system fault alarm relay de-energizes) Loss of Pyrolizer filament (4 mA signal drops to 2, system fault alarm relay de-energizes) Operating Temp: 14° to 86°F (0° to +30°C); consult PureAire for lower or higher operating temperatures. Humidity: Typically 20 to 95% RH;...

  • Page 13: Signal Outputs

    PureAire Monitoring Systems, Inc. 2.3 Signal Outputs Local Display: Digital display calibrated for Methyl Bromide. 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 14: Air Check Methyl Bromide Default Settings

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

  • Page 15: 3: Installation

    PureAire Monitoring Systems, Inc. 3: Installation 3.1 Site Requirements The Air Check Methyl Bromide 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 16: 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 4) shield. A three-wire shielded cable (3-conductor, 18 AWG stranded shielded) General Cable #E2203S.30.86 or equivalent...

  • Page 17: Initial Startup

    1. Check the integrity of all wiring. Confirm the power polarity. 2. Run any sample tubing from the monitor to the risk site. NOTE: PureAire recommends the use of polypropylene sample tubing with the dimensions of 1/4” OD by 3/16” ID. The total length of tubing should not exceed 100 feet.

  • Page 18: 4: Air Check Methyl Bromide Programming

    PureAire Monitoring Systems, Inc. 4: Air Check Monitor Programming The Air Check Methyl Bromide 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 19: Program Flowchart

    PureAire Monitoring Systems, Inc. 4.3 Program Flowchart PassCode OK Enter 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 Normal Relay 1...
  • Page 20 PureAire Monitoring Systems, Inc. Set Alarm Set Alarm 1 Normal PassCode OK Threshold Polarity Invert Set Alarm 2 Normal Invert Set Audio Not available Alarm Set Latching Set Latching Nonlatch NOTE: All numerical Latching values shown are only Set Latching...
  • Page 21 PureAire Monitoring Systems, Inc. Zero 0.5ppm Suppression Set Alarm Set Relay 1 1.0 PPM PassCode OK Thresholds Set Relay 2 5.0 PPM Not Available Set Audio Set Alarm 0.0 ppm Set Alarm 1 Hysterisis Set Alarm 2 0.0 ppm Not Available...
  • Page 22 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 Enable User Enabled Password Disabled...

  • Page 23: Entering The Password

    PureAire Monitoring Systems, Inc. 4.4 Entering the Password The Air Check Methyl Bromide 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 24: 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 25 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 26 “Re-enter Password Screen”. You’ll need to repeat steps 2 through 11. If you do not enter the password correctly, the monitor remembers the last password that was properly input. If you misplace or loose your password, contact PureAire with the monitors DTM# for instructions on recovering your password. The DTM# is displayed by moving the joystick to the left.

  • Page 27: Entering The Menus

    PLC controller or SCADA system. You can also connect the Air Check 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 28 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 Air Check Monitor.
  • Page 29 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 30 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 31 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 is selected, the Alarm Threshold Polarity must be set to Normal for the...
  • Page 32 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 Air Check Methyl Bromide Monitor.
  • Page 33 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 34 PureAire Monitoring Systems, Inc. ..Set Latching Relay 1… 0.0ppm 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 Air Check Monitor.
  • Page 35 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 36 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 37 NOTE: The audio alarm option module is not available for Methyl Bromide. 4.6.8 Set Alarm Hysterisis This function was designed for PureAire’s Oxygen deficiency monitor when used as a control system. NOTE: The Hystersis function is permits a user to set the dead band for both Alarms 1 and 2 and is not applicable to the Methyl Bromide toxic gas monitor.

  • Page 38: 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 39: 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 40: Electrolyte Replacement

    PureAire Monitoring Systems, Inc. 5.4 Electrolyte Replacement (For Renewable Methyl Bromide 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 5.3.
  • Page 41 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 42 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 43 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 44: System Calibration

    PureAire Monitoring Systems, Inc. 5.5 System Calibration The Air Check Methyl Bromide 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 45 PureAire Monitoring Systems, Inc. This is the menu at which to adjust the true zero reading on the Methyl bromide monitor. The selection permits setting system zero to a new or freshly recharged sensor cell. This procedure must be performed before challenging the monitor to a calibrated span gas.
  • Page 46 PureAire Monitoring Systems, Inc. 5.4.4 Gas Prepration  CAUTION: Be sure to observe all safety guidelines when generating and using calibration gases.  NOTE: Insure that the span gas is within certification period  NOTE: When using cylinder span gas, gas must be a mixture of the target gas blended with air.
  • Page 47 PureAire Monitoring Systems, Inc. Joystick for adjusting span Push increase the reading and DOWN decrease the reading Bromomethane span gas and On Demand Regulator Span Gas 90202256 Regulator 18102509 Methyl Bromide Waste Gas Bag 232-05A...

  • Page 48: 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 49 PureAire Monitoring Systems, Inc. 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.

This manual is also suitable for:

99072

Table of Contents