662M 1108R Oxygen Combustion Vessel Operating Instruction Manual
1108R Oxygen Combustion Vessel Preface 3 Operating Suggestions 11 Scope 3 Poor Combustion 11 Head Seal Modification 3 Oxygen Charging Pressure 11 Related Instructions 3 Customer Service 3 Maintenance and Safety Instructions 12 Operating the 1108R Oxygen Combustion Vessel 4 Bomb Maintenance 12 Bomb Repairs and Proof Tests 13 Precautions 4 1108R Maintenance Checklist 14 Special Alloy Construction 4 A Chlorine-Resistant Bomb 4 Parts 16 Other S
1108R Oxygen Combustion Vessel Preface Head Seal Modification Scope These instructions cover the procedures to be followed when using a Parr 1108R Oxygen Combustion Vessel to determine calorific values of solid or liquid combustible material in a Parr calorimeter, or when using an 1108R in a 1901 Oxygen Vessel Apparatus to prepare solid or liquid samples for chemical analysis.
1108R Oxygen Combustion Vessel Operating the 1108R Oxygen Combustion Vessel Precautions Combustion with oxygen in a sealed bomb is a very effective and reliable method for releasing all heat energy obtainable from a sample and for preparing hydrocarbon compounds and carbonaceous materials for analysis, but there are certain precautions which must always be observed when using this equipment.
1108R Oxygen Combustion Vessel 845DD2 Cotton Ignition Thread A38A Head Support Stand To attach the fuse either twist or tie the cotton thread to the A40DD2 semi-permanent fuse wire. Set the bomb head on the A38A support stand when attaching the fuse and arranging the sample.
1108R Oxygen Combustion Vessel Filling the Bomb The instructions below describe a manual system using the 1825 Oxygen Filling Connection furnished with other Parr apparatus. Oxygen for the bomb can be drawn from a standard commercial oxygen tank. Unscrew the protective cap from the tank and inspect the threads on the valve outlet to be sure they are clean and in good condition.
1108R Oxygen Combustion Vessel Fire the charge by pressing the firing button on the ignition unit, keeping the circuit closed for about 2 seconds. The indicator light will come on when the button is depressed and will remain on while the button is depressed. If the indicator light does not come on when the firing button is pressed there is either a fault in the 2901 or an open circuit in the system. Check for voltage between the 10 cm and common terminals of the 2901.
1108R Oxygen Combustion Vessel Samples and Sample Holders Particle Size and Moisture Content Solid samples burn best in an oxygen bomb when reduced to 60-mesh, or smaller, and compressed into a pellet with a Parr Pellet Press. Particle size is important because it influences the reaction rate. Large particles may not burn completely and small particles are easily swept out of the capsule by turbulent gases during the rapid combustion.
1108R Oxygen Combustion Vessel 3601 Gelatin Capsules 43A6 Combustion Capsule with Adhesive Tape Seal polished with an abrasive to remove any ash or other surface deposits. Heating in a muffle furnace is also a good way to destroy any trace of carbon or combustible matter which might remain in the capsule from a previous test. After heating, place the capsules in a clean container and handle them only with forceps when they are removed to be weighed on an analytical balance.
1108R Oxygen Combustion Vessel (approximately. 4600 cal/g) if the capsules are used for calorimetry, and for the sulfur content of the gelatin (approximately. 0.35%) if used for sulfur determinations. Blank tests must be run to determine the exact amounts. Gelatin capsules should always be stored in sealed bottles and handled with due regard for their hygroscopic nature.
08R Oxygen Combustion Vessel Operating Suggestions Poor Combustion The difference in combustion characteristics of the wide variety of materials which may be burned in an oxygen bomb make it difficult to give specific directions which will assure complete combustions for all samples. However, two fundamental conditions may be stated.
1108R Oxygen Combustion Vessel Maintenance and Safety Instructions Bomb Maintenance Under normal usage Parr oxygen bombs will give long service if handled with reasonable care. However, the user must remember that these bombs are continually subjected to high temperatures and pressures which apply heavy stresses to the sealing mechanism. The mechanical condition of the bomb must therefore be watched carefully and any parts that show signs of weakness or deterioration should be replaced before they fail.
1108R Oxygen Combustion Vessel 1. Assemble the bomb with the head in the cylinder and count the number of turns required to bring the screw cap down firmly against the head. 2. Then open the bomb; remove the head and replace the screw cap, but turn it down to only one-half of the turns previously counted. This will usually be about four turns. 3. With the screw cap in this position, use a dial gage to measure the vertical deflection when lifting the screw cap upward.
1108R Oxygen Combustion Vessel 1108R Maintenance Checklist Refer to page 11-13 & 16-17 of the 1108R Operating Instruction Manual for assembly instructions and parts diagram. 50 to 100 Test Maintenance Date Date Date Date Date Date Replace 840DD2 Heating Wire Clean electrodes 500 Test Maintenance Replace the following: Date 410A 415A 238A (4) 143AC 20VB Examine and replace if worn or cracked.
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1108R Oxygen Combustion Vessel Parts 1108R Parts Diagram Key KEY ITEM KEY ITEM DESCRIPTION 1 103A SCREW CAP 26 397A COMPRESSION NUT 2 410A QUAD-RING BUNA-N 27 396A OUTLET VALVE BODY 394A19 OXYGEN VESSEL HEAD, BARE 28 7VBCM WASHER MONEL 394A19CL OXYGEN VESSEL HEAD, BARE FOR CHLORINE SERVICE 29 378A PACKING CUP 30 20VB VALVE SEAT PCTFE 101A OXYGEN VESSEL CYLINDER 31 PA1332RD04 6-32 X 1/4 RHMS 32 840DD2 101ACL OXYGEN VESSEL CYLINDER FOR CHLORINE SERVICE (1108RCL) 60" IGNITIO
1108R Oxygen Combustion Vessel Parts for the 1108R Oxygen Combustion Vessel 23 24 25 1 26 27 9 9 5 12 10 7 13 7 19 28 8 6 37 7 7 2 29 30 3 15 15 14 14 20 4 16 33 17 34 32 35 31 31 www.parrinst.
1108R Oxygen Combustion Vessel Parts for the 2901 Ignition Unit 200F11 1157E 139E21 W/ SA1332RP04 11 7 (LOAD) 174F ISO WARNING SYMBOL REF 6 8 34E2 9 2005E 8 11 9 10 12 10 12 TN1632HL 6 7 115V 8 2 11 1 2014E 7 12V 5 115V 3 12V 12 5 6 95F 4 (3) A59A2 A1580E 2000E MOUNT TRANSFORMER W/(4) UP18DM04 1 (10 cm) (3) TN1332HL 190F GROUND SYMBOL REF 4 (COMMON) 3 (7 cm) 2 A3299HC CHASSIS REF 1557E REF A3299HC COVER REF 2 1 1574E 2901 Ignition Unit Item A1673E2 1203EEE 1202EE
1108R Oxygen Combustion Vessel Parts for the 1825 Oxygen Filling Connection 1825 Oxygen Fill Connection Item 4VB3 6VBBB 8VB2 Description Packing gasket Packing cover, brass Packing nut 9VB1 20VB 21VBBB 53A 112VB4AK 124VB A140VB A150VB 188A2 243VB 438VB A476A3 394HCJE HX0012TB024 Union nut, brass, CGA540 Valve seat, PCTFE Lantern ring, brass Oxygen gage, 3-1/2”, 0-60 atm Valve needle Union nipple, brass, CGA540 Toggle relief valve Valve knob Filling connection body, bare Tube connector, male Elbow conne
662M R01 10/10/14
