Orion Multigas Detector Combustible Sensor
Contents
1. 2 li Gasoline unleaded 1 3 Response Notes Heptane 1 1 1 The compounds may reduce the sensitivity of the combustible gas sensor by poisoning or inhibiting the catalytic action Hydrogen 0 6 2 These compounds may reduce the sensitivity of the combustible gas sensor n Hexane 1 3 by polymerizing on the catalytic surface 3 For an instrument calibrated on Pentane multiply the displayed LEL value by the Isobutane 0 9 conversion factor above to get the true LEL 4 These conversion factors should be used Isobuty Acetate 1 5 only if the combustible gas is known 5 These conversion factors are typical for a Orion Multigas Detector Individual l opropyi Alcohol t units may vary by 25 from these values Methane 0 5 MINE SAFETY APPLIANCES COMPANY 2003 L REV 0 P O BOX 427 PITTSBURGH PA 15230 100484762. MSA Orion Multigas Detector Combustible Sensor 20F Replacement Kit Sensor Replacement Proper installation when used in conjunction with the replacement procedure provided in the instrument instruction manual includes the following 1 2 7 Verify that the instrument is turned OFF remove battery pack If your unit is a pumped version remove the pump cover by removing the screw with a 1 16 inch hex key Remove the sensor cover screws and cover Gently lift out the sensor to be replaced properly dispose of the sensor If replacement sensor is equipped with a shorting plate clip or wire attached to its pins remove plate clip or wire before inserting the replacement sensor Carefully align new sensor contact pins with the sockets on the printed circuit board designated for the combustible sensor e Sensor positions cannot be changed Each sensor location is identified by a label in the bottom of each sensor well When replacing a sensor ensure that the gas type printed on the sensor label matches the sensor identification label in the instrument Fully seat the sensor flat against the printed circuit board MINE SAFETY APPLIANCES COMPANY 2003 L REV 0 8 Press the new sensor into place 9 Replace the sensor gasket and sensor cover 10 Re install the screws to hold down the sensor cover 11 Properly reassemble the instrument according the the instrument instr
3. uction manual A WARNING Verification of calibration response is required otherwise the instrument cannot perform as required and persons who rely on this product for their safety could sustain serious personal injury or death Typical Performance Specifications RANGE 0 TO 100 LEL RESOLUTION 1 LEL REPRODuCI 3 LEL to 50 LEL reading BILITY 5 LEL to full scale RESPONSE 90 of final reading in 30 TIME seconds normal temperature range Relative Responses to Combustible Gases The following relative responses to selected combustible gases are typical of an Orion Multigas Detector calibrated using Pentane P O BOX 427 PITTSBURGH PA 15230 10048476 MULTIPLY MULTIPLY COMBUSTIBLE GAS LEL READING COMBUSTIBLE GAS LEL READING BY BY Acetone 1 1 Methanol 0 6 Acetylene 0 7 Methyl Isobutyl ketone 1 1 Acrylonitrile 0 8 Methylcyclohexane 1 1 Benzene 1 1 Methyl Ethyl Ketone 1 1 Butane 1 0 Methyl Tertiary Butyl Ether 1 0 1 3 Butadiene 0 9 Mineral Spirits 44 n Butanol 1 8 iso Octane 1 1 Carbon Disulfide 2 2 n Pentane 1 0 Cyclohexane 1 1 Propane 0 8 2 2 Dimethylbutane 1 2 Propylene 0 8 2 3 Dimethylpentane 1 2 Styrene 1 9 Ethane 0 7 Tetrahydrofuran 0 9 Ethyl Acetate 1 2 Toluene 1 1 Ethyl Alcohol 0 8 Vinyl Acetate 0 9 Ethylene 0 7 VM amp P Naptha 1 6 Formaldehyde 0 5 0 Xylene 1
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