Sensit UL913 Instruction Manual
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Sensit UL913 Instruction Manual

Combustible gas detector
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INSTRUCTION MANUAL
SENSIT
HXG-3
®
Combustible Gas Detector
Read and understand
instructions before use.
7WA6
Approved UL913, For Class 1,
Division I, Groups C & D
hazardous locations when used
with alkaline batteries.
Warning: To prevent ignition of flammable
or combustible atmospheres, disconnect
power before servicing.
SENSIT-Direct.com
sales@GlobalTestSupply.com
1.888.610.7664

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Summary of Contents for Sensit UL913

  • Page 1 HXG-3 ® Combustible Gas Detector Read and understand instructions before use. 7WA6 Approved UL913, For Class 1, Division I, Groups C & D hazardous locations when used with alkaline batteries. Warning: To prevent ignition of flammable or combustible atmospheres, disconnect power before servicing.

  • Page 2: For Your Safety

    1000ppm) or exhaust gases. Continuously low calibration check results or fluctuation of zero readings may indicate sensor end of life or failure. Consult Sensit Technologies with any questions. For best accuracy always zero in clean air environments similar in temperature and relative humidity to the environment where the instrument will be used.

  • Page 3: Table Of Contents

    Operation and Use ..........13-16 Calibration Check ............17 User Menu and Detailed Operation User Menu / Function Descriptions ......18 Printing to Optional IR Printer ........19 Calibration, Power Off ..........20 Set Clock ..............21 Show Calibration Log ..........22 Show Session Log ............23 SENSIT-Direct.com sales@GlobalTestSupply.com 1.888.610.7664...
  • Page 4 Tests and Calibration Bump Test ..............24 Smart-Cal .............. 25-26 Gas Type ..............27 Calibration Notes, Preparing For Calibration ....28 Combustible Gas Calibration (50% LEL Methane or 50% LEL Pentane) ..... 29-30 Factory Adjustble Features ..........31 Warranty ............Back Cover SENSIT-Direct.com sales@GlobalTestSupply.com 1.888.610.7664...

  • Page 5: Parts And Accessories

    870-00004 IR Printer 870-00039 IR Link Interface w/ SmartLink Software 914-00000-01 Smart-Cal Automatic Calibration Station Calibration Kits 881-00015 Calibration Kit – Methane 881-00077 Calibration Kit – Pentane Contact us with instrument model number for correct Calibration Kit. SENSIT-Direct.com sales@GlobalTestSupply.com 1.888.610.7664...

  • Page 6: General Description

    The combustible gas alarm is preset from 50% LEL (2.5% methane or 0.75% pentane). The SENSIT® HXG-3 instrument is approved by Underwriters Laboratories to UL913, for Class 1, Division 1, Groups C & D hazardous locations when used with Duracell™ MN1400BK or equivalent alkaline batteries.

  • Page 7: Sensor Specifications

    Battery Life: Alkaline: 25 hrs. continuous The SENSIT® HXG-3 instrument is approved by Underwriters Laboratories to UL913, for Class I, Division 1, Groups C & D hazardous locations when used with approved batteries. APPROVED BATTERIES Duracell MN 1400BK or equivalent alkalines.

  • Page 8: Product Features

    PRODUCT FEATURES SENSOR BACKLIT LCD DISPLAY WARNING LEDS OPERATION BUTTONS TICK CONTROL FLEXIBLE GOOSENECK BATTERY COMPARTMENT SENSIT-Direct.com sales@GlobalTestSupply.com 1.888.610.7664...
  • Page 9 PRODUCT FEATURES SENSIT® HXG-3 instruments are constructed of durable ABS plastic to withstand the rigors of field use. Incorporated in the hand grip area is the battery compartment. All SENSIT® HXG-3 instruments require 3 “C” type alkaline batteries. Duracell MN 1400 batteries provide approximately 25 hours of continuous use.
  • Page 10 Below the display is a series of LEDs that are preset to indicate combustible gas concentrations. During an alarm condition the red Hazard 3 LED will flash and an audible warning will sound. There are 3 operational button pads on the front of all SENSIT® HXG-3 instruments. BUTTON (A) POWER/MUTE Operates POWER and MUTE features and exit menu items.

  • Page 11: Sensor Type

    SENSOR TYPE Combustible Gas Sensor All SENSIT® HXG-3 instruments incorporate a highly sensitive semiconductor type sensor. The function and accuracy of the sensor are monitored and controlled by specialized circuitry and a microprocessor. This sensor is capable of measuring concentrations of 1ppm or 10ppm of methane (natural) or pentane gas up to 100% LEL.

  • Page 12: Battery Installation/Replacement

    NOTE: Improper battery installation will disable the instrument. Check to be sure the handle is secure to the instrument body by gently pulling the handle away. The handle will remain firmly in place if a proper connection is made. SENSIT-Direct.com sales@GlobalTestSupply.com 1.888.610.7664...

  • Page 13: Operation And Use

    OPERATION AND USE ⚠ CAUTION: Always start any SENSIT® HXG-3 in a gas free environment to insure a proper zero. 1. Press and hold the POWER/MUTE button (A) until the display illuminates. 2. If the display fails to illuminate or BAT LOW is shown on the display replace the batteries.
  • Page 14 Manually zeroing the instrument will clear the PK% reading. ⚠ CAUTION: Always start any SENSIT® HXG-3 in a gas free environment to insure a proper zero. 6. When testing high areas or overhead lines the use of the optional extension adapter will allow a broom handle or painters stick to extend the instrument to the area where sensing must be accomplished.
  • Page 15 Move the sensor toward the area suspected of leakage. As the sensor moves closer to a leak source the tick will increase. When the tick becomes a steady tone rotate the thumbwheel in a clockwise direction while keeping the sensor in the same position. Continued on next page. SENSIT-Direct.com sales@GlobalTestSupply.com 1.888.610.7664...
  • Page 16 12. When being used in dark areas an automatic backlight will illuminate the display. 13. To turn instrument off, press and hold the POWER/MUTE button (A) for 5-6 seconds until POWER DOWN appears on the display. SENSIT-Direct.com sales@GlobalTestSupply.com 1.888.610.7664...

  • Page 17: Calibration Check

    CALIBRATION CHECK To verify the accuracy of any SENSIT® HXG-3, it must be exposed to a known concentration of test gas. Any sensor that does not meet the specifications listed in this manual may require calibration or replacement. A calibration check does not update the calibration due date. Full calibration is required to update this feature.

  • Page 18: User Menu / Function Descriptions

    USER MENU The SENSIT® HXG-3 has several features in the user menu. These include: PRINT MENU: SESSION LOG - print data that was saved. CAL LOG - print last 4 successful calibrations. SMART CAL - access to Smart-Cal Calibration Station.

  • Page 19: Printing To Optional Ir Printer

    Pressing the POWER/MUTE button (A) will will return to the USER MENU. Use the SAVE/ZERO button (C) at this time to scroll to another menu function. Pressing the POWER/MUTE button (A) will return the instrument to the working display. SENSIT-Direct.com sales@GlobalTestSupply.com 1.888.610.7664...

  • Page 20: Calibration, Power Off

    After adjusting the number, press and release the left button (A) to save the adjustment. Use the SAVE/ZERO button (C) at this time to scroll to another menu function. Pressing the POWER/MUTE button (A) will return the instrument to the working display. SENSIT-Direct.com sales@GlobalTestSupply.com 1.888.610.7664...

  • Page 21: Set Clock

    After adjusting all numbers press and release the POWER/MUTE button (A) to save the adjustment. Use the SAVE/ZERO button (C) at this time to scroll to another menu function in the USER MENU. Pressing the POWER/MUTE button (A) will return the instrument to the working display. SENSIT-Direct.com sales@GlobalTestSupply.com 1.888.610.7664...

  • Page 22: Show Calibration Log

    Press the MENU button (B) and the display will show the last gas calibrated and calibration date. Pressing any button will return the display to the user menu. Pressing the POWER/MUTE button (A) will return the instrument to the working display. SENSIT-Direct.com sales@GlobalTestSupply.com 1.888.610.7664...

  • Page 23: Show Session Log

    USER MENU. Pressing the POWER/MUTE button (A) once more returns the instrument to the working display. The number of stored session log saves is factory set at 6. It can store up to 100 by changing a factory setting (contact SENSIT TECHNOLOGIES for instructions). SENSIT-Direct.com sales@GlobalTestSupply.com...

  • Page 24: Tests And Calibration

    If the instrument fails, the display will read BUMP TEST FAILED and a beep will sound. Repeated bump test failure indicates possible need for instrument repair. Contact SENSIT Technologies for instructions. At the end of any bump test press the POWER/MUTE button (A) to return to the working display.
  • Page 25 Retry the test if necessary by pressing the proper button on the Smart-Cal Station again. Press and release the POWER/MUTE button (A) to return the working display. Remove the tubing and return instrument to service or send instrument to the proper place for repair per company procedures. SENSIT-Direct.com sales@GlobalTestSupply.com 1.888.610.7664...

  • Page 26: Smart-Cal

    Attach the tubing from the station to the instrument sensor. While in the working display press the POWER/MUTE button (A) for 2-3 seconds and release. The display will show SMART CAL Communicating. Perform all tests as described in the SMART CAL section. SENSIT-Direct.com sales@GlobalTestSupply.com 1.888.610.7664...

  • Page 27: Gas Type

    GAS TYPE. Press the MENU BUTTON (B). Press Button (B) or Button (C) to change between PEN (Pentane) or NAT (Natural or Methane) as primary gas to be sensed. Press Button (A) to confirm selection is made. SENSIT-Direct.com sales@GlobalTestSupply.com 1.888.610.7664...

  • Page 28: Calibration Notes, Preparing For Calibration

    Calibration is the process of setting the readings of the sensors in the instrument to equal the value of certified calibration gases. NOTES: Using calibration kits other than recommended by SENSIT TECHNOLOGIES may cause inaccurate readings. Repairs are required if any sensor fails to calibrate. Consult SENSIT TECHNOLOGIES for details.

  • Page 29: Combustible Gas Calibration

    If calibration is successful, the display will flash DATA SAVED before automatically returning to the calibration menu. Pressing the (A) button repeatedly will return the instrument to the working display. Remember to disconnect and shut off the gas supply. SENSIT-Direct.com sales@GlobalTestSupply.com 1.888.610.7664...
  • Page 30 If calibration is unsuccessful, the display will flash BAD CAL before returning to the calibration menu. In the event of a BAD CAL, remove the instrument from service and contact SENSIT Technologies for assistance. NOTE: Calibration will be based on the last successful calibration. The calibration due date will not be updated until successful calibration has occurred.

  • Page 31: Factory Adjustble Features

    Cal Due interval 30, 45, 60, 90, 180, 360 Days 30 Days Show Session Log* 1-100 Warm-up Time 10-30 sec. 30 sec. Purge Time 1-60 sec. 0 sec. LEL Resolution 0.1% - 2% 0.1% Peak Reading *Can be disabled SENSIT-Direct.com sales@GlobalTestSupply.com 1.888.610.7664...

  • Page 32: Warranty

    WARRANTY Your SENSIT® HXG-3 is warranted to be free from defects in materials and workmanship for a period of two years after purchase (excluding calibration and batteries). If within the warranty period, your instrument should become inoperative from such defects, the unit will be repaired or replaced at our option.

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