to view the operation manual ()
Contents
1. YIWYOJSNYYL s 3512 BE JSN En WOO Y3LYJH IVABZZ 3514 NA M3MOd E a JSN day auy YOLON 17 a x FITAM JIJAYS 9 455 WMO 1g 28 YOLOW YOVY 74 5 5 0 aa ao 2 062 ds BEZ 21405 104 08845 4 0 cu 8 BAVYO po 5271 5 apo o 2 MAWYOASNVYL t Le 004315 NJAO ZHAS OTe YSTOMLNOD 30 O SE 41 21 Fig 7 MOTOR CONTROL SETTINGS amp LOCATION 50 Hz REAR VIEW 4 gt 4 A DIAL SETTING k a a 100 12k Sk 2 8 1 5 9 2 1725 SQUIRREL CAGE MOTOR CONTROL DOS te mR 7 100 196 5k 8 l 9 9 15rpm DIAL SETTING SAMPLE RACK MOTOR CONTROL Fig 8 AIR SCHEMATIC2. f MOISTURE INDICATOR TO COIL FLOW METER CONTROL PRESSURE GAUGE Fig 9 PRESSURE AIR MAX INLET REGULATOR PRESSURE 125 PSI AIR IN 23 FLOW CALIBRATION AIR H20 2 de 1 10 A D 9 A 28 ea AT 5 OVEN MODEL SERIAL ae Date of Calibration ak Wo 15 ADJUST CENTER OF BALL TO ON FLOW METER THIS WILL EQUAL A CALIBRATED FLOW FOR 4000 ML 24 DRY AIR SYSTEM AS NEEDED CAN BE SUPPLIED BY CUSTOMER OR PURCAHSED FROM MANUFACTURE FOR PRICE CONTACT SALES AIR IN TO RTF OVEN pe AIR REGULATOR 1 4 NYLON LINE CONDENSATE FILTER FILTER OIL COALESCING WITH AUTO DRAIN DESICCANT DRYER Fig 10 DRY AIR SYSTEM PARTS LIST ORDER PART 325 DA1 Condensate Seperator 325 DA2 Filter 325 DA3 Oil Coalescing 325 4 Desiccant Dryer 25 CS325 MODIFICATION The ASTM Specification requires the Control Temperature Sensor be mounted 1 inch 25 44mm from the left side and appro
3. 163 C The effects of heat and air are determined from changes in physical test values as measured before and after the oven treatment An optional procedure is provided for determining the change in sample mass 3 2 Precision values for this test method have been developed for viscosity at 140 F 60 C and ductility at 60 15 690 4 Significance and Use 4 1 This test method indicates approximate change in properties of asphalt during conventional hot mixing at about 302 F 150 C as indicated by viscosity and other rheological measurements It yields a residue which approximates the asphalt condition as incorporated in the pavement If the mixing temperature differs appreciably from the 302 F 150 C level more or less effect on properties will occur This test method also can be used to determine mass change which is a measure of asphalt volatility 5 Apparatus 5 1 Oven This shall be a double walled electrically heated convection type oven Its inside dimensions shall be 15 in 381 mm high 19 in 483 mm wide and 17 1 2 1 2 in 445 13 mm deep with the door closed The door shall contain a symmetrically located window with dimensions of 12 to 13 in 305 to 330 mm wide by 8 to 9 in 203 to 229 mm high The window shall contain two sheets of heat resistant glass separated by an air space The window should permit an unobstructed view of the interior of the oven The top of the upper heating element shall be 1
4. 1 8 in 25 mm below the oven floor 12 5 1 1 The shall be vented at the top and bottom The bottom vents shall be located symmetrically to supply incoming air around the heating elements They shall have an open area of 2 31 0 11 in 15 0 0 7 cm The top vents shall be symmetrically arranged in the upper part of the oven and have an open area of 1 45 0 07 in 9 3 0 45 cm 5 1 2 The oven shall have an air plenum covering the sidewalls and ceiling The air space shall be 1 1 2 in 38 1 mm deep from the walls and ceiling At a midpoint in the width of the oven and 6 in 152 4 mm from the face of the circular metal carriage to its axis a squirrel cage type fan 5 1 4 in 133 mm OD by 2 7 8 in 73 mm wide shall be turned at 1725 rpm by an externally mounted motor The squirrel cage fan shall be set so that the fan turns in an opposite direction to its vanes The airflow characteristics of the fan plenum system shall be suction from the floor of the oven through the wall plenums and exhaust of the air through the fan Figures 3 and 4 show details of this plenum system 5 1 3 The oven shall be equipped with a proportional control thermostat capable of maintaining 325 F 163 C temperature within 1 0 F 0 5 C The sensing element of the thermostat shall be placed 1 in 25 4 mm from the left side and approximately 1 1 2 in 38 1 mm from the ceiling of the interior of the plenum enclosed oven so that the end o
5. The final container shall be removed from the oven within 5 min of removal of the initial container NOTE 4 Any scraping tool or technique may be used as long as an average of 90 or more of the residue is removed from the sample containers It has been determined that circumferential scraping tends to be more effective than lengthwise scraping 7 6 After removing the residue from each of the glass containers gently stir the collection container to homogenize the residue without introducing air into it Test the residue within 72 h of performing the RTFO test 7 7 If the mass change is being determined allow the designated residue sample containers to cool on the cooling rack for a minimum of 60 min and a maximum of 180 min After cooling place each container vertically on an analytical balance and determine its mass to the nearest 0 001 g Discard the residue from mass change determination and do not use it for other tests NOTE 5 To improve mass change precision the containers used for determining mass change should be handled with clean gloves or tongs and transfer to the balance should be done with tongs to prevent temperature changes which could distort the mass measurement 8 Report 8 1 Report the results from RTFO test in terms of the physical changes in the asphalt brought about by this method These values are obtained by performing appropriate ASTM tests on the asphalt before and after the moving film oven cycle 8 2 When de
6. Vent to Oven 2 7 Witch RTD should I be using sked Questions See Page 4 in the User Manual Air supply to this unit should not exceed 125 PSI See Page 4 in the User Manual Turn regulator until Pressure Gauge reads 50 PSI See Page 4 5 in the User Manual Yes to 4000 we calibrate before shipping See Page 24 in the User Manual Yes Please call 530 346 8322 for On Site Service Quotation Yes as long s it doesn t Touch the oven or interfere with the performance of Oven See Page 26 in the User Manual 28 CALIBRATION 1 Temperature Our units are supplied with a digital readout You need to have an ASTM Loss on Heat Thermometer positioned in the RTF Oven per ASTM D 2872 97 The thermometer must reflect the same temperature as the digital readout The RTD in the digital readout will have a faster reacting time than the thermometer Our units are preset at the factory You may need to make some fine tuning adjustments as humidity elevation and room temperatures are factors in proper temperature settings 2 Flow Meter We suggest using a Mass Flowmeter for calibration of you flowmeter You can purchase these units from Omega at 1 800 826 6342 We use a Certified Mass Flow Meter to calibrate our units prior to shipment 3 Rack Rotation Our 60 cycle units are preset from the factory Our 50 cycle units use a variable DC Speed Control and the Rpm s of the Rack and Blower Motors require calibration o
7. in Column 5 are the limits that should not be exceeded by the difference between the results of two properly conducted tests expressed as a percent of their mean 9 2 The precision of the loss of mass determinations has not been determined 10 Keywords 10 1 aging asphalt cement rolling thin film oven test RTFOT The American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this with any standard Users of this standard are expressly advised that determination of the validity of any such patent rights and the risk of infringement of such rights are entirely their own responsibility This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and it not revised either reapproved or withdrawn Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters Your comments will receive careful consideration at a meeting of the responsible technical committee which you may attend It you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards 100 Barr Harbor Drive West Conshohocken PA 19428 18 CS325B OVEN PARTS LIST Item Item Description 325 01B 325 01A 325 02 325 03 325 04 325 06 325 07 325 08 set 325 09B 325 09A 325 1
8. of the information contained herein IMPORTANT Do not open door with blower or rack motor on Disconnect oven power supply at source when working inside the cabinet to avoid electrical shock Turn sample rack with control button to prevent damage to gear The air nozzle will cause breakage if the sample containers are not placed firmly against the rack backstop ELECTRICAL REQUIREMENTS Electrical Maximum load 2 KV A Power factor 0 90 2000 Watt heating element Standard 208 240 60 Cycle single phase 3 Wire grounded neutral Optional 220 50 Cycle single phase Thermal Protection Electrical circuits fully protected by temperature switch and fuses in both legs The thermal protection on the switch is 425 The switch allows the heat to shut down at 425 F and turn back on at 375 F repeatedly until the problem is resolved See page 20 Fig 6 60Hz or page 21 Fig 7 50Hz for Electrical Schematic AIR REQUIREMENTS Air System Requirements a Air supply to this unit should not exceed 125 PSI b Supply dry clean air See page 25 Fig 10 for example c If air supply is contaminated install an air filter d If moisture or oil fumes are present install a dehydrator OPERATING INSTRUCTIONS Step 1 Push Power Button Push Power Blower and Sample Rack Buttons Step 2 Set air pressure by using pressure regulator knob Pull Knob out to release lock Turn until it reads 50 PS
9. rise time of the system within the time period allocated from load time to assumed equilibrium of the system The CS325B has been designed to optimize the precision of performance with regard to maintenance of setpoint while attaining high speed recovery from thermal disturbances caused by reloading The oven temperature is sampled by a precision sensor exposed to the supervised environment at a location which is representative of the desired specimen location The thermal mass of the sensor is extremely low having a thermal electrical time constant measurable in seconds The system is a fully stabilized closed loop thermal electrical feedback control system The system has fast response tight control limits and freedom from overshoot There are no mechanical relays contactors commutators mechanically operated or thermal pressure magnetic devices utilized The entire system is fully electronic noiseless and non mechanical in nature There is nothing to wear or fatigue High speed of response is assured by complete control of a 2000 watt heating element Thermal conduction and radiation losses are low and virtually all applied power is consumed in replacing losses due to the air vents required for dissipation of expended volatile from the specimens Every precaution has been taken in the preparation of this publication Cox amp sons assumes no responsibility for errors or omissions Neither is any liability assumed for damages resulting from use
10. 0 325 11 325 12 325 13 325 14 325 15 325 16 325 17 325 20 325 21 325 26 325 27 325 28 Bodine Rack Motor 60cycle Dayton Rack Motor 50cycle Heating Coil Power Switch Sample Rack Switch Blower Switch Sample Rack Assembly Sample Rack Spindle Bushing 1 Blower Motor 60cycle Blower Motor 50cycle Blower Motor Flexible Coupling Blower Spindle Housing Blower Shaft 3 8 Diameter Blower Bushings Squirrel Cage Top Motor Mount Air Heating Coil Flow Meter Adjustment Valve Moisture Indicator Air Regulator Sample Bottles Clear Sample Bottles Frosted Air Nozzle Item Description 325 29 325 30 325 31 225592 325 33 325 33B inch 325 35 325 36 325 37 325 38 325 39 325 40 325 41 325 42 325 44 325 51A 325 51B 325 53 325 54 325 55 325 56 325 57 325 58 Rack Shaft Rack Fingers set of 8 Transformer Rack Spindle Housing Silicon Gasket for Door per inch Silicon Gasket for Door Glass per Plastic Handle for Door Handle Assembly include 35 Silica Gel 1LB can Pyrex Plate Thermometer Chain Transite Plate Latch Set inside DC Motor Control RTD Sensor RTD Sensor Controller Series B Ist Micro Switch Jar Tongs Drive Gear 25B15 small 60Hz Drive Gear 25B25 medium 50Hz Drive Gear 25B30 large 60Hz 19 ELECTRICAL 60 7 N 2 ES 5 Y JW 0 Fig 6 20 ELECTRICAL SCHEMATIC 50 Hz ASPHALT OVEN
11. E VIEW 6 Preparation of Oven 6 1 Position the air outlet orifice so that it is 1 4 in 6 35 mm from the opening of the glass container The orifice shall also be so positioned that the jet blows horizontally into the central arc of the opening of the circling glass container 6 2 Position the thermometer specified in 5 3 so that the end of the bulb of the thermometer is within 1 in 25 4 mm of an imaginary line level with the center of the shaft holding the revolving carriage 6 3 Level the oven so that the horizontal axes of the glass containers when in position in the carriage are level 6 4 Preheat the oven for a minimum of 16 h prior to testing with the control thermostat adjusted to the setting that will be used during the test This setting shall be selected such that when the oven is fully loaded and the air is on the oven will equilibrate at 325 1 F 163 0 5 0 as indicated by the test thermometer MATERIAL PYREX BRANO TUBING STANOARO WALL 64 MM O D WALL THICKNE55 24MM 3 MM NOTE 2 Because the presence of sample containers affects the temperature distribution in the oven containers must be present in the oven when the thermostat seeing is determined The use of empty containers is acceptable for this purpose 15 D 2872 Test Method Standard Deviation 15 Acceptable Range of Coefficient of Variation Acceptable Range of Two Two Results d2s Percent of mean Results percent of mean 15 925
12. I on pressure gauge Push knob to re lock Set air flow tube by using flow meter control knob turning counter clockwise Bring ball up to the calibrated set point See page 24 Step 3 Allow oven to come up to temperature and stabilize at 163 C Oven is now ready to install test samples Turn blower and sample rack off leaving power button on Put bottles in rack close door and turn on blower and sample rack Oven will return to 163 C in 10 minutes The test should be performed following the AASHO T 240 and ASTM D2872 procedures See page 11 ASTM Specs NOTE Your oven temperature controller has been programmed at our facility to perform applicable tests You should not need to change any controller settings if you do need to adjust temperature refer to page 9 D 2 3 4 5 CONTROL PANEL SYSTEM CHECKS Air Regulator Setpoint 50 PSI Temperature Control The control is programmed for the required thermal rising time and the 163 C setpoint as required by the rolling thin film test The only adjustment that may be necessary is a slight change in the temp erature setpoint Refer to page 9 Controller Programming steps 4 amp 5 Flow Meter Calibration The air flow rate of 4000ml should be measured at the outlet nozzle by a suitable method The oven should be at room temperature and correction made to standard conditions of barometric pressure and temperature This measurement should be checked periodically See
13. MODEL CS325B ROLLING THIN FILM OVEN OPERATING INSTRUCTIONS 1998 JAMES COX AND SONS INC 1085 Alpine Way P O Box 674 Colfax CA 95713 5 Revised February 28 2002 11 19 20 21 22 23 24 25 26 27 28 29 30 Model CS325B Important Precautions Getting Started Electrical and Requirements Operating Instructions System Checks 1 Air Regulator 2 Temperature Control 3 Flow Meter Calibration 4 Air Nozzle 5 Moisture Indicator Control Panel Layout Front Fig 1 Control Panel Layout Back Fig 2 Controller Programming ASTM Spec D 2872 97 Parts List Electrical Schematic 60Hz Fig 6 Electrical Schematic 50Hz Fig 7 Motor Control Settings 50Hz Fig 8 Air Schematic Fig 9 Flow Meter Calibration Chart Dry Air System Schematic Fig 10 Temperature Sensor Modification Troubleshooting F A Q Frequently Asked Questions Calibration Warranty James Cox amp Sons Inc 1997 MODEL CS325B ASPHALT ROLLING THIN FILM OVEN The Model CS325B Precision oven is designed for the specific requirements of the Asphalt Rolling Thin Film Tests as specified in State of California Test Method 346 E AASHO T 240 and ASTM D2872 Repeatability of the aforementioned test is directly related to the accuracy with which the oven temperature can be maintained to the specified standard temperature of 325 F 163 C and the reproducibility of the thermal
14. MP 2 YELLOW WIRING 9 GRAY HARNESS 10 RED 11 RED 12 WHITE CAUTION FOR PROPER OPERATION AND SAFETY OVEN MUST BE GROUNDED AIR IN MAX INLET SURE 125 PSI Step 1 Step 2 Step 3 CONTROLLER PROGRAMMING To enter into program A Push the PAR button once this puts you into program A To enter into program 1 2 3 For instance you want program 2 you press PAR button four times the control will then flash or NO on screen At this point you need to press the UP button on the controller two times which puts you into program 2 If you want to program 3 press the UP button three times Programming the 1 2 or 3 For instance if programming is needed to program 2 after entering into program 2 press the PAR button once twice three times etc until required letters appear on the screen Press the UP or DOWN button to obtain the correct number needed Press the PAR button repeatedly until CNFP or NO flashes on the screen At this point press the UP or DOWN button to enter in another program and repeat procedure or press PAR button when CNFP or NO is on screen When the program is complete END will appear on the screen the controller will then display TEMP TEMPERATURE ADJUSTMENT Step 4 Step 5 After the oven has been running and temperature is stabilized on controller make a comparison to an ASTM thermometer If there is a
15. Single operator precision Viscosity at 140 F 60 C DaS 255 2 3 6 5 Ductility at 60 F 15 6 C A 3 9 un Multilaboratory precision Viscosily at 140 F 60 C ia 4 2 11 9 Ductility at 60 F 15 6 C 16 A This is based on the analysis of data resulting from tests by 16 laboratories two asphalt s ranging born 13 30 7 Procedure 7 1 The sample as received shall be free of water Heat the sample in its container with a loosely fitted cover in an oven not to exceed 302 F 150 C for the minimum time necessary to ensure that the sample is completely fluid Manually stir the sample but avoid incorporating air bubbles 7 2 Pour 35 0 5 g of the sample into each of the required glass containers providing sufficient material for characterizing tests which are to be run on the residue 7 3 Immediately after pouring the sample into a glass container turn the container to a horizontal position without rotating or twisting Place the container in a clean cooling rack which is maintained in a draft free room temperature location away from ovens or other sources of heat NOTE 3 For maximum precision in determining mass change the cooling rack should be in a location that is the same temperature and humidity as the balance used for measuring the mass of the containers 7 3 1 Allow the glass sample containers to cool in the cooling rack for a minimum of 60 min and a maximum of 180 min 7 3 2 When mass
16. change is being determined use two separate containers for this determination After cooling separately place each of these containers vertically on an analytical balance and determine its mass to the nearest 0 001 g 7 4 With the oven at operating temperature and the airflow set at 4000 200 mL min arrange the containers holding the asphalt in the carriage so that the carriage is balanced Fill any unused spaces in the carriage with empty containers Close the door and rotate the carriage assembly at a rate of 15 0 2 r min Maintain the samples in the oven and the air flowing and the carriage rotating for 85 min The test temperature 325 1 F 163 0 5 C shall be reached within the first 10 min otherwise discontinue the test 7 5 At the conclusion of the testing period remove any samples for mass change determination and place them horizontally in the cooling rack Then remove each remaining glass sample container one at a time and transfer its contents to a collection container having a capacity at least 30 greater than the total expected volume of residue This transfer shall be accomplished by first pouring out any residue that will flow freely from the glass sample container and then scraping out as much of the remaining residue as practical While the residue is being removed from each sample container the oven door shall remain closed with the heater power on the air 16 on and the remaining samples rotating in the carriage
17. difference you need to enter program 1 After entering program 1 press the PAR button six times SHFE should appear on the screen At this time you would press the UP or DOWN button depending on the oven temperature UP to cool and DOWN to heat To end procedure press the PAR button until CNFP or NO appears on the screen Press PAR once again END will appear and controller will return to normal display CONTROL PANEL PROGRAM PROP Proportional Band 0 5 Integral Time 70 DERT Derivative Time 2 Input Sensor 385 SCAL Temp Scale Units C DEPE 0 0 FLTR Digital Filtering 3 SPAN Input Slope 1 000 SHFT Input Offset SPLO Setpoint Lower Limit 50 0 SPHI Setpoint Upper Limit 200 00 SPRP Ramp Rate 25 OP Access Output Power CYCT Cycle Time 1 Control Action REV OPLO 0 Output Lower Upper Limit Range 65 Sensor Fail Power Preset 0 OPDP Output Power Dampening On Off Control Hysteresis Auto Tune Dampening Code 3 ChyS 1 0 tcod 4 SP ENT OP ENT DEV RED UDSP RED CODE Access Code Number 0 PID ENT TRNF LOC Enable Auto Man Transfer LOC TUNE LOC Enable Auto tune LOC 10 ASTM SPEC D 2872 97 Standard Test Method for Effect of Heat and Air on a Moving Film of Asphalt Rolling Thin Film Oven Test Designation D 2872 97 AMERICAN SOCIETY FOR TESTING AND MATERIALS 1 X Barr Harbor Dr West Conshohocken PA 19428 Reprinted from the Ann
18. ements required by this test method 5 4 container in which the sample is to be tested shall be of heat resistant glass conforming to the dimensions shown in Fig 5 5 5 Cooling Rack A wire or sheet metal rack constructed of stainless steel or aluminum which allows the sample containers to cool in a horizontal position with each container in the same horizontal plane The rack shall be constructed in a way that allows air to flow freely around each container with at least 1 in 2 5 cm clearance between containers and at least 1 in 2 5 cm clearance between the containers and any solid surface 14 57 0 347 THICK 127130 5 DIA ALUMINUM DISCS 3 R EQ D 9 2 6 67 m Dia HOLES EQUALLY SPACED ON 87 20 32 DIA 852000047 64 MM OO 112 UM 25 Dio 5 0571 3175CM ISM i fa 5507067 SMM SAMPLE BOTTLE FIG 5 Sample Bottle SPRING CLIPS SAMPLE BOTTLE RETAINER 1 9 DIA SHAFT COPPER TUBE AIR LINE SAMPLE BOTTLE i ORIFICE D40 1 Ql6 nn A 274 0 0 a G 3Scm iD 22H 5 46 LONG SPACER 4 REGO W l 1 27 0 0 4 0 635 cm iD 2 06 LONG SPACER 4 REQD DRILL FOR 4 0 635cu DIA MACH SCREW 4 PLACES Sete TETE EGUALLY SPACED ON 1 27 9 DIA Fig 4 Circular Carriage SID
19. ermo meter and the ASTM sensor with wiring installed but not connected We are leaving the choice of which sensor to use up to our customers If you wish to use the ASTM location sensor with over shoot disconnect the power from the oven and exchange the wiring at the temperature controller terminal block connector numbers 10 11 and 12 ASTM sensor color code Red 10 Red 11 White 12 26 Troubleshooting In Case of apparent malfunction please check the following points first 1 Noisy Rack Motor 2 Noisy Blower Motor 3 Rack will not Turn 4 Power on but no Heat 5 No Power to Oven Check chain for adjustment the Sprocket on the Rack may be tight adjust to 020 or you may have bad motor Check Graphite Bushings they may be worn Squirrel cage may be out of balance or 1t needs to be tightened Improper adjustment Bad Motor Bad Rack Motor Check fuse Sprocket 15 loose on Motor Bad Rack Switch Bad RTD Sensor Bad connections to heating coils Check Fuse Bad Switch Check for broken wire from RTD to Controller Check wiring from your service panel to oven Check Fuses See Schematic for your Oven See Page 20 Fig 6 or 21 Fig 7 in your User Manual 27 F A Q Frequently Q 1 Power Requirements 2 What is the Max Air Pressure 3 What PSI should I set the Regulator to 4 Has the Flow Meter been Calibrated 5 Do we offer On Site Service 6 Can I Mount Hood
20. f the sensing element is at a point approximately 8 in 203 2 mm from the rear interior wall of the oven The thermometer shall be hung or affixed to a mounting in the ceiling which is 2 in 50 8 mm from the right side of the oven at a midpoint in the depth of the oven The thermometer shall hang down into the oven so that the bulb of the thermometer is within 1 in of an imaginary line level with the shaft of the circular metal carriage The heating controls shall be capable of bringing the fully loaded oven back to the test temperature within a 10 min period after insertion of the samples in a preheated oven 5 1 4 The oven shall be provided within a 12 in 304 8mm diameter vertical circular carriage see Fig 4 for details This carriage shall be provided with suitable openings and clips for firmly holding eight glass containers in a horizontal position see Fig 5 The vertical carriage shall be mechanically driven through a 3 4 in 19 mm diameter shaft at a speed of 15 0 2 r min 5 1 5 The oven shall be equipped with an air jet positioned to blow heated air into each bottle at its lowest point of travel The air jet shall have an outlet orifice 0 04 in 1 016 mm in diameter No 60 drill connected to a 25 7 6 m length of 5 16 in 8 mm outside diameter refrigeration copper tubing This tubing shall be coiled to lie flat on the bottom of the oven and lead to a source of fresh dried dust free regulated air 5 2 Flowmeter The flowme
21. ions or disassembly repair or alteration by any person other than an authorized service engineer The terms of the warranty are revoked if any part or assembly is physically modified in any manner whatsoever by the customer or agency other than James Cox amp Sons Inc without written permission Assistance agreements are available for products that require on site repair The agreements provide emergency service when deemed necessary by the customer Tourist class round trip airline transportation will be charged at cost along with current daily rates for field service personnel 30
22. n installation You can purchase an optical tachometer from the Cole Parmer Instrument Co 1 800 323 4340 catalog no E 87500 10 29 WARRANTY James Cox amp Sons Inc warrants all manufactured products to be free of mechanical and electrical defects in materials and workmanship for a period of one year from the date of acceptance by the purchaser If the date of acceptance is unduly prolonged the warranty period will automatically commence thirty 30 days from the date of delivery at the customer s site James Cox amp Sons Inc will replace or repair free of charge but not including transportation costs installation or any other service charges components or assemblies that are manufactured by us which our inspection reveals to be defective provided they are returned to our plant within the warranty period The warranty extends only to those products that have been assembled and installed according to our instructions or by a qualified service engineer All standard components are covered under the same warranty Other non standard major items which are not manufactured by us but have been requested by the customer as an addition to a standard unit will carry the remaining portion of the warranties of the original manufacturer This warranty does not cover normal wear of parts or damage resulting from any of the following negligent use or misuse of the product use on improper voltage or current use contrary to operating instruct
23. page 24 for chart Air Nozzle a Clean with No 60 twist drill b Use the shank end of the drill to prevent enlarging the orifice Moisture Indicator a Contains color changing blue silica gel edry air blue emoist air pale pink b The indicator reactivates itself when dry air flows through it However in time it may lose this quality and it would be necessary to replace the silica gel CONTROL PANEL LAYOUT FRONT me ass SAMPLE S ea RACK S Tes es m Co n D Nw FLOW METER JAMES COX amp SONS MODEL 325 B RTF CONTROLLER PRESSURE GAUGE MOISTURE INDICATOR FLOW METER PRESSURE REGULATOR CONTROL Fig 1 CONTROL PANEL LAYOUT Nie gt ne ne NE De ve 7 5 SAMPLE MOTOR 5 BLOWER MOTOR 7 5 AMP POWER MOTOR 15 _ 15 BODINE MOTOR y 5 Done AE e a y PRES NEUTRAL WHITE 60 HZ UNITS ONLY AIR IN 1 PURPLE 2 WHITE WIRING 3 ORANGE f HARNESS 4 BLUE 5 N C 6 ORANGE HEAT TE
24. ter may be any suitable type capable of accurately measuring the airflow at a rate of 4000 mL min The flowmeter shall be located downstream of all regulating devices and upstream of the copper coil The flowmeter shall be positioned so it is maintained at approximately room temperature The airflow shall be calibrated periodically using a wet test meter or other displacement method This calibration shall be based on airflow exiting the air jet and shall be conducted with the oven off and at room temperature 1This test method is under the jurisdiction of ASTM Committee D 4 on Road and Paving Materials and is the direct responsibility of Subcommittee D04 46 on Durability and Distillation Tests Current edition approved April 10 1997 Published April 1998 Originally published as D 2872 70 Last previous edition D 2872 88 1995 ei 2 Annual Book of ASTM Standards Vol 04 03 3 Annual Book of ASTM Standards Vol 14 03 4 Complete equipment may be obtained from James Cox and Sons Inc P O Box 674 Colfax CA 95713 13 D 2872 SENSOR THERMOMETER oven FIG 3 Schematic of Air Flow Front View Note 1 Activated silica gel treated with an indicator is a satisfactory desiccant for the dried air 5 3 Thermometer This shall be an ASTM Loss on Heat Thermometer conforming to the requirements for Thermometer 13C as prescribed in Specification E 1 This thermometer shall be used to make all temperature measur
25. termined report the average mass change of the material in the two containers as a mass percent of the original material Report this calculated result to the nearest 0 001 A mass loss shall be reported as a negative number while a mass gain shall be reported as a positive number Note 6 This test can result in either a mass loss or a mass gain During the test volatile components evaporate causing a decrease in mass while oxygen reacts with the sample causing an increase in mass The combined effect determines whether the sample has an overall mass gain or an overall mass loss Samples with a very low percentage of volatile components usually will exhibit a mass gain while samples with a high percentage of volatile components usually will exhibit a mass loss 17 9 Precision and Bias 9 1 Criteria for judging the acceptability of the viscosity at 1 40 F 60 C and the ductility at 60 F 15 6 C test results on the residue after heating are given in Table 1 The values given in Column 2 are the standard deviations that have been found to be appropriate for the materials and conditions of test described in Column 1 values given in Column 3 are the limits that should not exceeded by the difference between the results of two properly conducted tests The values given in Column 4 are the coef6 cients of variation that have been found to be appropriate for the materials and conditions of test described in Column 1 The values given
26. ual Book of ASTM Standards Copyright ASTM Standard Test Method for Effect of Heat and Air on a Moving Film of Asphalt Rolling Thin Film Oven Test 1 This standard is issued under the fixed designation D 2872 the number immediately following the designation indicates the year of original adoption or in the case of revision the year of last revision A number in parentheses indicates the year of last reapproval A superscript epsilon E indicates an editorial change since the last revision or reapproval Scope 1 1 This test method is intended to measure the effect of heat and air on a moving film of semi solid asphaltic materials The effects of this treatment are determined from measurements of the selected properties of the asphalt before and after the test 1 2 The values stated in inch pound units are to be regarded as the standard 1 3 This standard does not purport to address all of the safety concerns if any associated with its use It is the responsibility of the user of this standard to establish appropriate safety and health practices and determines the applicability of regulatory limitations prior to use 2 Referenced Document 2 1 ASTM Standard D 113 Test Method for Ductility of Bituminous Materials D 2171 Test Method for Viscosity of Asphalt s by Vacuum Capillary Viscometer 2 E I Specification for ASTM Thermometers 3 3 Summary of Test Method 3 1 A moving film of asphaltic material is heated in an oven for 85 min at 325 F
27. ximately 1 5 inches 38 1mm from the ceiling of the interior plenum The end of the sensing element should be at a point approximately 8 inches 203 2mm from the rear interior wall of the oven The location of this sensor as required by the ASTM specification makes it impossible to control the temperature in the 10 minute ramp time allowed without over shooting the required set point of 163 C it over shoots approximately 2 C The basic problems are the location of the control sensing element and insufficient air flow pass the sensor ASTM requires the temperature is to be measured at mid point of the oven by a certified thermometer The control sensor should also be located near the bulb of the thermometer In the original oven design prior to the addition of the blower system the control sensor was placed next to the thermometer in the center of the oven At that time the oven conformed to the 10 minute ramp specification without over shoot The temperature controller we now use is a programmable Microprocessor unit with PID tuning constants over shoot suppression dampening ramping etc Using this state of the art control with various programs we still have approximately 2 C of over shoot We realize this is an ASTM standard test and they require the control sensor at a specific location We are furnishing the unit with two control sensors For the most precise control and no over shoot we use the one located near the bulb of the th
Download Pdf Manuals
Related Search