EiE INSTRUMENTS 107 RT User manual
PRODUCT USER MANUAL : EIE_RTFO_PUM_00
Revision No.: EIE/RTFO/REV.00 Dtd. 15/08/2020
INSTRUMENT: Rolling Thin film oven
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Organization’s ISO 9001:2015 Certificate
PRODUCT USER MANUAL : EIE_RTFO_PUM_00
Revision No.: EIE/RTFO/REV.00 Dtd. 15/08/2020
INSTRUMENT: Rolling Thin film oven
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Forward
Dear valued customer,
We just want to take a moment out to thank you for your keen interest in our company
products. We greatly appreciate your business and the opportunity you provided us to assist
you. You have joined a selected group of customers who have switched to the technologically
superior and quality enhanced laboratory testing product.
Time has changed, so do the technology. Your purchase lists you on the cutting edge of 21st
century technology. The attached test report is an excellent way of expressing and maintaining
your trust in EIE’s - superior quality testing products. Our continued efforts and commitment is
to provide you efficient sales after services, prompt attention and highest level of customer
satisfaction. If for any reasons, you have questions or comments, we are delighted to hear from
you. Call us on 0091-79-660406013 or send us email at
email within 24-48 working hours.
Once again, thank you for your trust and kind patronage. We look forward to serve you better
in future.
Yours sincerely,
EIE Instruments
PRODUCT USER MANUAL : EIE_RTFO_PUM_00
Revision No.: EIE/RTFO/REV.00 Dtd. 15/08/2020
INSTRUMENT: Rolling Thin film oven
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Table of Contents
Organization’s ISO 9001:2015 Certificate ............................................................................... 2
Forward ................................................................................................................................ 3
Table of Contents .................................................................................................................. 4
List of Figures ........................................................................................................................ 4
1Introduction of Rolling Thin Film Test Apparatus ............................................................ 5
2Technical Specification ................................................................................................... 5
2.1 Electrical.................................................................................................................. 5
2.2 Mechanical .............................................................................................................. 5
3Brief Construction Details............................................................................................... 6
4Component diagram of Thin Film Oven .......................................................................... 7
5Electric wiring Diagram of Thin film oven........................................................................ 8
6Delivery and Uncrating of apparatus .............................................................................. 9
6.1 How to make instrument ready for use? .................................................................. 9
7Introduction of Control Panel ....................................................................................... 10
7.1 Guidelines for Operating Microprocessor based controller ..................................... 11
8Standard Operating Procedure ..................................................................................... 12
8.1 Report ................................................................................................................... 13
9Troubleshooting........................................................................................................... 14
10 Maintenance & Service ................................................................................................ 15
11 ASTM Standard for Test process ................................................................................... 16
Warranty Certificate............................................................................................................ 21
List of Figures
Figure 1 Component diagram of apparatus.................................................................................. 7
Figure 2 Electric circuit diagram of apparatus .............................................................................. 8
PRODUCT USER MANUAL : EIE_RTFO_PUM_00
Revision No.: EIE/RTFO/REV.00 Dtd. 15/08/2020
INSTRUMENT: Rolling Thin film oven
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1Introduction of Rolling Thin Film Test Apparatus
This test method determines the effect of heat and air on a moving film of asphalt to serve as an indicator
of approximate change in properties during conventional hot-mixing. The results are reported in terms of
the changes in selected properties such as viscosity, penetration and ductility brought about by the RTFO
test, as evidenced by test data taken before and after the 75-minute oven cycle.
EIE –Rolling THIN FILM OVEN Conforms to the specifications of ASTM D2872
Double-walled electrically heated convection oven for rolling thin film oven tests on asphalts. Incorporates
all required features per ASTM specifications, including: door with double-pane viewing window;
symmetrical top and bottom vents; air plenum; squirrel cage-type 1325rpm fan; digital indicating
Microprocessor based temperature controller to control oven temperature at 163°C ± 0.5°C; vertical
circular carriage to mechanically rotate the samples at 15 ± 0.2rpm; air jets to blow heated air into each
sample bottle at its lowest point of travel; and a calibrated flowmeter to control air flow at 4000mL/min.
An over temperature cut-off circuit disconnects power to the unit in the event of control failure.
2Technical Specification
2.1 Electrical
POWER SOURCE : 230 Volts, 50 Hz, Single Phase AC Supply
POWER CONSUMPTION : Approx. 2.0 K.W
TEMPERATURE RANGE : Ambient to 200C
TEMPERATURE ACCURACY : 1 C or Better Result
TEMPERATURE RESOLUTION : 0.1C
TEMPERATURE CONTROLLER : Microprocessor Based PID –Controller.
SENSOR : RTD/ PT –100
FLOWMETER : 01 No. Ranging (200 –4000) ml/minute
2.2 Mechanical
Construction : Double walled
Inner Chamber : Stainless Steel
Outer body : M.S / STAINLESS STEEL (As per ordered)
Insulation : Mineral Wool
PRODUCT USER MANUAL : EIE_RTFO_PUM_00
Revision No.: EIE/RTFO/REV.00 Dtd. 15/08/2020
INSTRUMENT: Rolling Thin film oven
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3Brief Construction Details
EIE –Rolling Thin Film Oven is ergonomically designed with latest German Technology for guaranteed
performance.
1) The oven is a double walled convection heated unit.
2) The double wall layer is supplied with separate inner chamber and exterior body as they do not have
direct physical contact with each other.
3) Inner chamber is made up of stainless steel with great care in order to eliminate the sharp edges.
4) All external cases of oven are constructed out of mild steel undergone with strong seamless welding
and covered with a thick layer of finished & attractive powder coating paint. This provides robust
and heat resistant surface having long-lasting attractive finish.
5) The gap between the double walled layer is filled with thick mineral glass wool to prevent the direct
heat losses and leakages and to ensure the maximum thermal efficiency.
6) The unit is fitted with a single door having special roller and spring type latch for proper locking
arrangement. A specially fabricated door having silicon rubber gasket fixed at its edges keeps the
inside temperature completely stable.
7) The fixed ventilators are provided on both sides of the oven wall.
8) The heating is achieved by 80/20 Nichrome wires installed as part of heater element. The unit has 2
special Heaters. The Heaters are made of high-quality Nichrome wire and finest ceramic Beads.
Heating element is placed at the bottom of the instrument as well as on both the sides of the unit.
9) Precise Temperature control is obtained by Microprocessor based PID temperature controller
(Advanced model) for ease of operation.
10) Especially designed air jets to blow heated air into each sample bottle at its lowest point of travel,
and a calibrated flowmeter to control air flow ranging (200 –4000) mL/min.
11) A circular carriage is mounted to hold the sample bottles and mechanically rotate the samples at a
speed of (15 ± 0.2) RPM.
12) The specially fabricated footrest keeps the whole oven in correct equilibrium.
13) The unit is fixed with Caution and other stickers, as per International Safety norms.
PRODUCT USER MANUAL : EIE_RTFO_PUM_00
Revision No.: EIE/RTFO/REV.00 Dtd. 15/08/2020
INSTRUMENT: Rolling Thin film oven
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4Component diagram of Thin Film Oven
sID
Description
ID
Description
ID
Description
1
Mains Switch
6
Diaphragm pump
11
Motor Cover
2
Alarm Switch
7
Control Switch
12
Door Handle
3
Blower Fan switch
8
Door Lock
13
Rotor Plate
4
Digital Temperature
Controller
9
Flow Meter
14
Viewing Glass
5
Squirrel Cage Motor
10
Castor Wheel
15
Copper Coil
Figure 1 Component diagram of apparatus
PRODUCT USER MANUAL : EIE_RTFO_PUM_00
Revision No.: EIE/RTFO/REV.00 Dtd. 15/08/2020
INSTRUMENT: Rolling Thin film oven
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5Electric wiring Diagram of Thin film oven
Figure 2 Electric circuit diagram of apparatus
PRODUCT USER MANUAL : EIE_RTFO_PUM_00
Revision No.: EIE/RTFO/REV.00 Dtd. 15/08/2020
INSTRUMENT: Rolling Thin film oven
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6Delivery and Uncrating of apparatus
1. Inspect equipment and shipping crate immediately upon receipt. If any damage is apparent,
immediately discuss it with the delivery person and contact the transportation company
immediately. Make notes of any damages on the bill of landing.
2. Retain all shipping material for later inspection.
3. Check packing slip carefully and ensure all materials have been received as indicated in packing slip.
4. Remove packing strip from surroundings of the instrument and all its accessories. Please inspect and
note whether any part of the instrument is damaged or any accessory is missing according to packing
slip? If it is so, then immediately make note of it and report to the manufacturer.
5. Due to the vibration incurred during shipping and handling, it is possible that mechanical connection
could become loose. Inspect all connection to ensure that they are secure.
6. After visual inspection, if everything is found to be okay, transit the instrument to suitable safe place
where it is intended to install. Caution: Handle with care.
7. Recycle the packing material. Do not throw it away for environment protection.
6.1 How to make instrument ready for use?
1) Keep the equipment in well ventilated place.
2) Place the equipment on a plain, even and sturdy surface leaving approx. 4”-5” inch space away from
the wall.
3) Do not use equipment in a corrosive environment. A corrosive environment may lead to poor
performance and deterioration of unit.
4) Keep instrument away from draft, sunlight, water or near a place of equipment, which emits heat as
well as electromagnetic conduction emission.
5) Keep Standard Operating Manual while operating the apparatus.
PRODUCT USER MANUAL : EIE_RTFO_PUM_00
Revision No.: EIE/RTFO/REV.00 Dtd. 15/08/2020
INSTRUMENT: Rolling Thin film oven
Page No.: 10 of 22
7Introduction of Control Panel
The control panel is mounted at left hand side of the unit encompasses different control accessories
according to selected model. These control accessories differ in a way the temperature is controlled inside
the oven chamber.
The following are the switches for various functions on control panel:
Mains switch cum Indicator (Rocker Switch)
In this advanced model, mains switch serves the purpose of switching and indicating both. An operator can switch
on / switch off the entire unit from mains switch mounted on front panel. Also, the switch incorporates a lamp inside
which indicates that the mains supply is on and the unit is currently in the operating mode.
Alarm Indicator
This switch is mounted for safety purpose, as if the SSRs are damaged or out of date then the heat will
not be maintained as per DTC (set temperature value). As the chamber temperature rises above the set
point value then buzzer glows indicating for overheating of chamber.
Therefore, recommended to Turn “ON” Alarm switch before starting each test.
Fan (Blower) switch
This switch is provided on the control panel to control the working of fan (Blower) inside the oven
chamber. A circulating fan helps in maintaining & distributing uniform temperature inside the oven
chamber.
Digital Température Controller
RTFO incorporates the PID temperature controller to monitor and maintain the set-point temperature
value inside oven chamber. A proportional–integral–derivative controller (PID controller) is a
generic control loop feedback mechanism (controller) which calculates an "error" value as the difference
between a measured temperature value and a desired set-point value. The controller attempts to
minimize this error by adjusting the process control inputs.
Diaphragm Pump
This switch cum indicator is provided to turn “ON/OFF” pump which blows heated air jet inside each
sample at fixed flow rate, controlled by flowmeter mounted on the front panel.
Squirrel Cage Motor
This switch cum indicator is provided to turn “ON/OFF” cage motor which is holding the samples.
PRODUCT USER MANUAL : EIE_RTFO_PUM_00
Revision No.: EIE/RTFO/REV.00 Dtd. 15/08/2020
INSTRUMENT: Rolling Thin film oven
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Control Switch
Control switch is a rotary switch mounted on the front panel. It is marked with three numerical points
i.e. 0, 1, 2, and 3. To attain the low, medium and high heating application, the rotary switch should point
to corresponding numerical values according to following guidelines.
a) Off-setting : In this process, user should put the control switch at ‘0’th position indicating
that none of the heater is working.
b) Low-setting : When the control switch is kept at ‘1’st position, both the heaters will remain in
series connection and the temperature value up to 70° C could be determined.
c) Medium-setting: When the control switch is kept at ‘2’nd position, the heater with the maximum
kw (kilowatt) capacity works to determine the temperature range up to 150 °C.
d) High-setting : When the control switch is kept at ‘3’rd position, both the heaters remain in
parallel connection and the temperature range up-to 200 °C could be determined.
7.1 Guidelines for Operating Microprocessor based controller
SV For set value (Green/white display)
PV For Process value (Red display)
There are four tactile keys provided on the front panel for configuring the controller and setting up the
parameter values.
DOWN KEY : Press to decrease the parameter value.
UP KEY : Press to increase the parameter value.
To set the temperature for heating of the sample, press UP (Arrow key) to increase the temperature value
as desired set points increased than release the key at that point, set value will be auto saved and repeat
the same process to decrease the value.
Note:
The controller is factory set and it does not require any settings except required temp.
PRODUCT USER MANUAL : EIE_RTFO_PUM_00
Revision No.: EIE/RTFO/REV.00 Dtd. 15/08/2020
INSTRUMENT: Rolling Thin film oven
Page No.: 12 of 22
8Standard Operating Procedure
1) Heat the sample of asphalt binder(sample) until it is fluid to pour. Stirr the sample to ensure
homogeneity and remove air bubbles.
2) If a determination of mass change is desired, label two RTFO bottles and weigh them empty. These
are designated as the “mass change” bottles. Record the weights.
3) Pour 35 ± 0.5g of asphalt binder into each bottle. Immediately after pouring each bottle, turn the
bottles on their side without rotating or twisting and place them on a cooling rack.
4) Allow all bottles to cool 60 to 180 minutes. After cooling, weigh the two mass change bottles again.
Record the weights.
5) When mass 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.
6) Connect the main cord to properly grounded outlet. Now, turn “ON” main switch cum indicator,
Indicator glows, indicating that apparatus is in operational mode.
7) DTC display also glows, displaying chamber temperature, now as per explained in section 4.1 set
desired temperature using UP/Down arrow key of controller.
8) Turn “ON” the Fan (Blower) switch for uniform heating throughout.
9) Set the airflow meter to read 4000 ± 200mL / min which is the same as described by ASTM D2872.
10) Place the sample bottles in the RTFO oven carriage, close the door, after that carriage rotates to an
accessible position at 15 ±0.2 RPM for 85 minutes. The test temperature 163 ± 0.5C shall be reached
within the first 10 minutes otherwise discontinue the test. Therefore, recommended to preheat the
oven chamber before place the test sample for test.
NOTE: For protection purpose, Push button is mounted just aside the main door, equipment stops
functioning if the door is open.
11) At the conclusion of the testing period, remove any sample for mass determination and place the
horizontally in the cooling rack. Then, remove each remaining glass sample container one at a time,
and transfer its content 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
PRODUCT USER MANUAL : EIE_RTFO_PUM_00
Revision No.: EIE/RTFO/REV.00 Dtd. 15/08/2020
INSTRUMENT: Rolling Thin film oven
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shall remain closed, with the heater power on, the air on, and the remaining samples rotating in the
carriage. The final container shall be removed from the oven within 5 min of removal of the initial
container.
12) 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.
13) 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.
14) Now sample is ready to perform the test such as viscosity at 140°F (60°C) Ductility at 60°F (15.6°C) as
per requirement.
8.1 Report
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.
2) When determined, 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.
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Revision No.: EIE/RTFO/REV.00 Dtd. 15/08/2020
INSTRUMENT: Rolling Thin film oven
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9Troubleshooting
Cause
Reason
Solutions
Heater is not working
(Heating is not
achieved inside the
chamber)
1) End terminals of heater element
may have lost the circuit
connection.
2) An operator may have kept the
control switch at “0” position.
3) SSR (Solid stat Relay) may have
stopped working.
Output dc voltage of 3-24 V from
micro-controller is not supplied to
SSR and in turn, SSR is not able to
supply 230 V to heater elements.
4) Control switch may not be
functioning.
1) Turn the oven upside down or
rest it on the side walls. Remove
the bottom cover. Find out the
loosen end terminal of heater
and fix it.
2) Keep the control switch position
on low, medium or high
according to user requirement.
3) Check Input voltage of SSR, it
should be 3 to 12-volt DC and
output voltage should be 230
volts AC.
If input is 3 -12 –volt not
available, DTC may be faulty.
If 230 volts AC not available
SSR may be faulty, Replace
the SSR.
4) Replace the control switch.
Top RED digits of
controller displays
“OPEN”
a) Sensor may not be
functioning well or it has
gone out of order.
a) Check the Sensor. It should
indicate between 110 –115
ohms, check it with the help
of multi-meter. If found
faulty replace it.
Unit is completely
dead. No part of it is
working.
1) Required operating power may
not be available.
1) Check the available mains power
in the socket with the help of
tester or multi-meter.
PRODUCT USER MANUAL : EIE_RTFO_PUM_00
Revision No.: EIE/RTFO/REV.00 Dtd. 15/08/2020
INSTRUMENT: Rolling Thin film oven
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2) Mains cord wire may have been
damaged.
3) Mains switch cum indicator on
control panel may not be
working.
2) Replace the cord wire.
3) Replace the mains switch cum
indicator.
10 Maintenance & Service
1) Always disconnect from power supply prior to maintenance & servicing.
2) To avoid electrical shock, this equipment must always use a properly grounded electrical outlet or
correct voltage and current handling.
3) Disassembly of this equipment is strictly limited to the qualified personnel and licensed engineers.
4) Maintain a safe distance of at least 5" to 6" from the wall while installing the oven.
5) Always check if the door is locked properly leaving no air leakage at all.
6) Please open/close the door gently. Recommend to replace the door gasket on yearly basis.
7) Ensure that ventilation shutters at both sides of the oven remain opened to complete the air
circulation cycle.
8) Clean the sensor near the heating element leaving sensor activate precisely.
9) Never place any test samples near the sensor element as it will affect and damage its accuracy.
10) Never place test samples directly on bottom part of the oven as the controlling circuit/wiring of the
entire unit is installed below this part.
11) The equipment is supplied with the brush-less AC motor, hence there is no need to replace the
carbon brush.
12) Keep the instrument tidy, clean and dry with mint cream. Before initiating the fresh day, use
preferably clean soft cloth. Brush up the unit body as to maintain its colour and finishing.
13) Never leave the instrument connected to mains after completion of Test.
14) In case of any difficulty, please do not try repairs without consulting us, especially when the
instrument is under guarantee period.
PRODUCT USER MANUAL : EIE_RTFO_PUM_00
Revision No.: EIE/RTFO/REV.00 Dtd. 15/08/2020
INSTRUMENT: Rolling Thin film oven
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11 ASTM Standard for Test process
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Revision No.: EIE/RTFO/REV.00 Dtd. 15/08/2020
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