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PureAire Air Check Lite Instruction Manual

Toxic gas monitor
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Air Check
Lite
Toxic Gas Monitor
Instruction Manual
PureAire Monitoring Systems, Inc.
1140 Ensell Road
Lake Zurich, Illinois 60047
Phone: 847-726-6000
Fax: 847-726-6051
Toll-Free: 888-788-8050
www.pureairemonitoring.com

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Summary of Contents for PureAire Air Check Lite

  • Page 1  Air Check Lite Toxic Gas Monitor Instruction Manual PureAire Monitoring Systems, Inc. 1140 Ensell Road Lake Zurich, Illinois 60047 Phone: 847-726-6000 Fax: 847-726-6051 Toll-Free: 888-788-8050 www.pureairemonitoring.com...
  • Page 2 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: Table Of Contents

    PureAire Monitoring Systems, Inc. 5/25/07 Table of Contents 1: Introduction ........................2 1.1 Key Features ................2 1.2 Component identification.............3 2: Specifications ........................6 2.1 Performance Specifications ..........7 2.2 Gas Detection System ............7 2.3 Signal Outputs ..............7 2.4 Electrical Requirements ............7 2.5 Physical Characteristics ............8 3: Installation ........................9...

  • Page 4: 1: Introduction

    PureAire Monitoring Systems, Inc. 5/25/07 1: Introduction The Air Check  Lite Toxic Gas Monitoring System is a self-contained gas detection system suitable for keeping a wide range hazardous gases under continual surveillance. Each system consists of an amperometric, electrochemical sensor cell and two-wire transmitter. The Air Check ...

  • Page 5: Component Identification

    PureAire Monitoring Systems, Inc. 5/25/07 1.2 Component Identification 1.2.1 Front View Exterior 3. & 4. 4-20 mA Signal Output Terminal — This connection serves as both 4-20 mA output connection and 24 VDC power input connection. See section 3: Installation for more information.
  • Page 6 PureAire Monitoring Systems, Inc. 5/25/07 1.2.2 Transmitter Interior 1. Calibration Port 2. Terminal Block 3. Sensor cell Terminal Block Calibration Port — This port is used for when calibrating Air Check  Lite Monitoring Systems which do not have a digital display. See Sensor Calibration elsewhere in this manual.
  • Page 7 PureAire Monitoring Systems, Inc. 5/25/07 4. Sensor Connector 5. Threads for Sensor Cover Sensor Connector — Female connector; plugs into receptacle on sensor cable. Threads for Sensor Cover — Secure sensor cover onto sensor body.
  • Page 8 PureAire Monitoring Systems, Inc. 5/25/07 6. Sensor Cable and Connector 7. Sensor Cover Sensor Cable and Connector — Allows remote mounting of sensor. Sensor plugs into receptacle on end of sensor cable. Sensor Cover — This cover protects the gas sensor. It threads onto...

  • Page 9: 2: Specifications

    Low electrolyte (analog signal drops to 2 mA; 0 mA on request). Sensor removed (analog signal drops to 2 mA; 0 mA on request). Operating Temperature: 14° to 113°F (-10° to +45°C); consult PureAire for lower operating temperatures. Humidity: Sensor dependent; typically 20 to 95% RH; consult PureAire for sensors which can operate in 100% condensing RH environments.

  • Page 10: Physical Characteristics

    PureAire Monitoring Systems, Inc. 5/25/07 2.5 Physical Characteristics Dimensions: 4.9 (W) x 3 (H) x 3 (D) inches; 125 x 75 x 75 mm Weight: 1.1 pounds (0.5 kg) Enclosure Type: General purpose; not intended for explosive atmospheres. Installation Options:...

  • Page 11: 3: Installation

    If possible, avoid areas with high temperatures or relative humidity.   WARNING: The Air Check Lite 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 The Air Check ...

  • Page 12: Sensor Installation

    PureAire Monitoring Systems, Inc. 5/25/07 3.3 Sensor Installation  IMPORTANT: Be careful not to turn the sensor or touch the membrane on the bottom of the sensor during installation.  IMPORTANT: Be sure to remove the jumper from the sensor electronics prior to installing the sensor.

  • Page 13: Wiring

    PureAire Monitoring Systems, Inc. 5/25/07 3.4 Wiring The Air Check  Lite uses a single, 3-wire shielded cable for analog output and 24 VDC power input. A three-wire shielded cable (3-conductor, 18 AWG stranded) General Cable E2203S.30.860 is recommended for the connection. The maximum permissible cable length is 0.62 miles (1 km).

  • Page 14: 4: Normal Operation

    PureAire Monitoring Systems, Inc. 5/25/07 4: Normal Operation The Air Check  Lite is a single point monitor designed for the continuous detection and measurement of hazardous gas leaks. 4.1 Signal Outputs The Air Check  Lite outputs a continuous 4-20 mA analog signal proportional to the measured concentration of the target gas.

  • Page 15: Loss Of Power Indicator

    PureAire Monitoring Systems, Inc. 5/25/07 4.3.1 Routine Visual Checks Check for power and proper operation Items to check Condition / status when Unit should be outputting a 4 mA signal when no operating properly gas is present. On instruments with a digital readout, display should also show 0 when no gas is present.

  • Page 16: 5: Maintenance & Calibration

    PureAire Monitoring Systems, Inc. 5/25/07 5: Maintenance & Calibration Maintenance and calibration should be performed only by qualified personnel. 5.1 Sensor Cell Removal and Installation 5.1.1 Sensor Removal 1. Remove the sensor protective sleeve by rotating counter-clockwise (right to left).

  • Page 17: Electrolyte Replacement

    PureAire Monitoring Systems, Inc. 5/25/07 5.2 Electrolyte Replacement  CAUTION: PureAire recommends wearing 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 5.1.1.
  • Page 18 PureAire Monitoring Systems, Inc. 5/25/07 Nozzled Electrolyte Bottle Sensing Electrode Electrolyte 5. Wipe the sensing electrode and the surrounding area with a dry paper tissue. Paper Tissue Pressure Compensation Port Sensing Electrode...
  • Page 19 PureAire Monitoring Systems, Inc. 5/25/07 6. Place a new silicone sheet (if used) and O-ring on the sensor. Make sure that the area is dry of electrolyte. O-ring Silicon Sheet 7. Apply a drop of electrolyte on the sensing electrode.
  • Page 20 PureAire Monitoring Systems, Inc. 5/25/07 Box Nut Membrane Mmebrane Retainer Retainer Ring Ring Membrane Pressure Compensation Port 10. Hold the sensor in your hand with the electrode down. Pour fresh electrolyte in until it reaches the MAX. mark. Pressure Compensation Port...
  • Page 21 PureAire Monitoring Systems, Inc. 5/25/07 Pressure Compensation 11. Wipe the pressure compensation port and its surrounding area with a dry Port paper tissue. Pressure Compensation Port Paper Tissue Pressure 12. Insert the pressure compensation plug into the port and cover with a new...

  • Page 22: Sensor Calibration

     Six months has passed without membrane, electrolyte, or sensor replacement. The PureAire Calibration Kit (optional) is recommended for calibration. 5.3.1 Gas Generation and Calibrating Kits For generating a calibrating gas, the following PureAire Gas Generation Kits are recommended. They are available by separate order. Calibration Kit Model K-II...
  • Page 23 NOTE: If the Air Check Lite transmitter is a non-display model, PureAire’s meter adapter (part number 690600) should be used. This allows the operator to plug a VOM digital multimeter into the calibration port on the main electronics board to read the gas concentration.
  • Page 24 PureAire Monitoring Systems, Inc. 5/25/07  NOTE: Gas generation kits are available through PureAire. These kits include instructions and materials for generating calibration gases and precise methods for accurately measuring the concentration of these gases.  NOTE: The gas concentration should be close to, but never exceed, full scale.
  • Page 25 PureAire Monitoring Systems, Inc. 5/25/07 15. Allow the instrument to return to a zero reading. If the instrument has not returned to zero after 5 minutes, readjust the zero potentiometer as required. 16. Close the valve on the waste gas bag and disconnect from the sampling pump.

  • Page 26: 6: Drawings

    PureAire Monitoring Systems, Inc. 5/25/07 6: Drawings...
  • Page 27 PureAire Monitoring Systems, Inc. 5/25/07 Remote DQS cell holder and mounting bracket P/N 650100 Mounting Bracket...
  • Page 28 PureAire Monitoring Systems, Inc. 5/25/07 DQS cell Mounted to AirCheck Lite...
  • Page 29 PureAire Monitoring Systems, Inc. 5/25/07 Membrane...
  • Page 30 PureAire Monitoring Systems, Inc. 5/25/07...
  • Page 31 PureAire Monitoring Systems, Inc. 5/25/07...
  • Page 32 PureAire Monitoring Systems, Inc. 5/25/07 Exploded view of Vertical Bulkhead Fitting for Gas Cabinet & VMB Installation Instructions Note: The bulkhead holder is designed to mount the sensor cell on a vertical duct positioned at a angle from vertical. 1) Cut a 2” hole in the duct wall, [C]...

  • Page 33: 7: Appendix

    PureAire Monitoring Systems, Inc. 5/25/07 7: Appendix Ammonia (NH 0 to 75 ppm Arsine (AsH 0 to 1 ppm Boron Trichloride (BCl 0 to 9 ppm Carbon Monoxide (CO) 0 to 100 ppm Chlorine (Cl 0 to 3 ppm Diborane (B...
  • Page 34 PureAire Monitoring Systems, Inc. 5/25/07 Air Check  Lite Sensor cell Set up instructions 1) Remove the red shorting pin from the sensor cell PCB. 2) Connect the 5-pin Din connector on sensor cable to the connector on the sensor cell.

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