Related Manuals for MTI OTF Series
Summary of Contents for MTI OTF Series
- Page 1 OTF Series Tube Furnaces Max. 1200°C GENERAL OPERATIONAL MANUAL 860 South 19 Street, Richmond, CA 94804, USA TEL: (510) 525 – 3070 FAX: (510) 525 – 4705 Website: www.mtixtl.com Email: info@mtixtl.com...
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Page 2: Important Notes
The prospective user is responsible for carefully reading and understanding the contents of this manual prior to operating the equipment. MTI reserves the right to update or upgrade the product without informing customers of the data change(s) in this manual. Please visit www.mtixtl.com... -
Page 3: Table Of Contents
Contents IMPORTANT NOTES ................................. 2 GENERAL SAFETY WARNING ..............................2 WARRANTY....................................2 SPECIFICATIONS ..................................4 UNPACKING INSTRUCTION ..............................5 SYSTEM SETUP ..................................5 Operating Environment ..............................5 Power connection Requirements ............................. 6 Heating Elements Installation / Replacement ......................... 9 Tube Installation / Replacement............................9 Vacuum Flanges Installation / Removal ........................ -
Page 4: Specifications
SPECIFICATIONS OTF Series Models Model OTF-1200X-S-UL OTF-1200X-UL OTF-1200X-5L OTF-1200X-S-12 (Single Zone) OTF-1200X-4-HNG-UL Working Temp 1200 °C Max. (< 1 hr) 1200 °C Max. (< 1 hr) 1200 °C Max. (< 1 hr) 1200 °C Max. (< 1 hr) <1100 °C Continuous <1100 °C Continuous... -
Page 5: Unpacking Instruction
Transport of the system should be in an upright position at all times until it is moved to the right place. CAUTION: Do not dispose any of the packing materials or boxes. MTI will not provide extra packing materials in the case of future “return for repair” service request. -
Page 6: Power Connection Requirements
In the case of 110V, a standard US plug will typically be supplied. For 220V, MTI will most likely ship the instrument without a power plug on its cable due to the different plug configurations and electrical codes used by different locations and countries. - Page 7 Please refer to the illustrations below to get an idea of the connections for the three phase and as well as the single phase 208~240V AC. Attention: MTI Corporation will not be responsible for any equipment or property damage that results from improper or incorrect power connections.
- Page 8 Typical Single Phase AC Power In US...
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Page 9: Heating Elements Installation / Replacement
Heating Elements Installation / Replacement The heating elements of the furnace will need to be replaced once they are worn. To prevent damage from shipping, some furnaces will also require heating elements to be installed by the user prior to use. Follow the instructions below to carry out the heating elements installation (depending on the heating element type, skip if elements are already installed). -
Page 10: Vacuum Flanges Installation / Removal
Vacuum Flanges Installation / Removal The flange end caps are responsible for enabling the tube chamber of the furnace to be air tight and thus allowing for the vacuum environment to be induced. Follow the instructions below to install/ remove the vacuum flanges depending on the tube configuration of the furnace. - Page 11 WARNING: The air seal must be inspected by vacuum or filled inert gas before running the furnace again.
- Page 12 Concealed Tube This furnace setup does not expose either end of the tube on the sides as it is concealed within the furnace itself. The flanges of this design are usually mounted directly on the casing or body of the furnace itself. Please follow the instructions below to install or remove the flanges for this setup.
- Page 13 4. Each end of the tube will require two silicon O-ring gaskets and one steel O-ring. 5. Begin by mounting the first silicon gasket onto the tube, then mount the steel O-ring in the middle and follow up with another silicon gasket. 6.
- Page 14 The picture series below should be used as the reference for properly fitting every component of the flange end caps onto the tube ends (applies to both Extruded and Concealed tube configurations). 1. With the inner collar of the flange end cap placed on the tube, install the two silicone O-rings with the steel O-ring in between.
- Page 15 3. Then put on the outer flange end cap and begin tighten the screws. Please note that all screws must be fastened evenly to ensure the gap between the two flange end caps is evenly distributed all around. WARNING: All screws around the flange end cap must be fastened EVENLY in a fashion similar to securing a car’s wheel onto the axle.
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Page 16: Thermoblock Placement
Thermo block placement Prior to heating samples inside of the furnace, thermal insulation blocks must be placed inside the tube chamber by a position specific manner. This will insulate the heat from the vacuum flanges (sealing gasket protection) while simultaneously preventing the dissipation of heat from the furnace chamber. The insulation of heat stabilizes the heating zone which in turn expends less energy and places less wear on the heating elements. -
Page 17: Thermocouple Installation
Thermocouple Installation The thermocouple has been tested on the furnace to ensure proper function prior to shipping. However, some furnaces (high temperature series) have special thermocouples that had to be removed prior to shipping to protect against damage. If your furnace does not come with the thermocouple already being installed, please use the following instructions to install it. -
Page 18: Vacuum Pumps
To prevent tube deformation, quartz tube furnaces may be safely used up to 1000°C The flanges on MTI furnaces can be readily configured to accept various fittings for vacuum pump connections. The standard Barbed Hose Fitting (default fitting option on flanges) allows a flexible rubber hose to be used for the vacuum pump connection at minimal cost. - Page 19 Exhaust Filters Particle Trap Cold Trap for Recovering Condensables Mounting accessories in between the vacuum pump and the processing chamber can also be considered to protect the internals of the vacuum pump from damage. Moreover, traps are available to prevent the back streaming of rough vacuum pump oil into the processing chamber or the molecular pump’s internals.
- Page 20 Exhaust Gas Cooling Unit Oil Trap GAS FLOW SYSTEMS Gas mixing/ delivery systems allow for mixing of various reactive gases for inducing chemical reactions as well delivering inert gases into the chamber for sample treatment. For making the connections to these systems, the flanges regularly come standard with Barbed Hose Fittings to accept flexible rubber gas tubes for bridging the gas source and furnace.
- Page 21 NOTE: Check the compatibility of the thread type of the 1/4 tube fittings before installation. For most gas regulator in U.S. the 1/4 tube fitting is required to have 1/4 MNPT thread type. For MTI flange system, the 1/4 tube fitting is required to have 1/4 MBSPP thread type.
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Page 22: Operation Guidelines
All of the components mentioned above can be found at the Furnace Accessories section below: http://mtixtl.com/furnaceaccessories.aspx OPERATION GUIDELINES Quick Test: If the furnace is being used for the first time (or use again after a long period of inactivity), please perform a quick test to heat up the furnace to 300℃... -
Page 23: Sample Loading / Unloading
<1200C; use alumina or zirconia crucibles for furnaces with working temperature < 1800C. Quartz (Crucibles, Boats, and Rods)Alumina Crucibles / Boats Note: MTI supplies various kinds of quartz, alumina and zirconia crucibles/boats, please click the link in below to view our products: http://www.mtixtl.com/quartzcricublesboats.aspx http://www.mtixtl.com/aluminacricublesboats.aspx... -
Page 24: Turning On/Off The Furnace
Vacuum pump, gas supply system or other attached devices& valves have to be shut off accordingly. There are mainly two types of configurations with the control panels of MTI furnaces. To operate the furnace, please: 1. - Page 25 This sets enables customers to efficiently control and monitor the furnace temperature via a GUI (Graphical User Interface) in real time. The software MTI provide for furnaces is available at extra cost; if customers order a laptop with a furnace, MTI will have pre-installed the software and ensure the laptop works well with the furnace.
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Page 26: Temperature Programming
Ramping / cooling rate must be strictly controlled according to the specification table. Processing tubes can be thermally shocked or cracked if the ramping / cooling rates are not followed properly. Do not change any default parameters especially the ‘P’, ‘I’, ‘D’, ‘PLOC’, ‘LOC’ without MTI’s authorization. In case of Bota temperature controller Current Temp. - Page 27 2) Temperature program setting Press “←” once to enter temperature program setting status Set initial temperature to 0 C by using Keystrokes :“←”, “↑” or “↓” ; Press “Set” to display “t01” on PV window; Set heat-up time from initial temperature to target temperature by using Keystrokes :“←”, “↑” or “↓” ; ...
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Page 28: Running The Program
Running the program When all the data is input into the temperature program, press both “Set” and “←” together, and “end” will show on SV window again as an indication of the controller returning to the “Normal Status”. Then press “↓” and hold for two seconds to display “Run”... -
Page 29: Functions And Indicators
2. In Case of Yudian temperature controller 1) Structure Below are the three variants of controllers commonly found on the furnaces. Though with different looks, they all share similar features and functions. 2) Functions and Indicators 3) Startup Status When starting the device, the meter type and program version will display for a few seconds, and then enter the normal state. - Page 30 4) Displaying Switch a. In the “normal state” or “program running state”, press “SET” key (Button 2) for1secondtoswitchto“executing program segment”(to set executing segments or display the ongoing temperature segment). b. Press “SET” key (Button 2) again for1 second to switch to “running time state”(to display the total running time PV xxxx min and the elapsed time SV xxxx min.) c.
- Page 31 Set initial temperature to 0 C by using Keystrokes :“←”, “↑” or “↓” ; Press “Set” to display “t01” on PV window; Set heat-up time from initial temperature to target temperature by using Keystrokes :“←”, “↑” or “↓” ; ...
- Page 32 Attention: The heating profile will stop at the first segment that contains “-121” regardless of whether or not the latter segments have values set in them. 6) Running the program When all the data is input into the temperature program, press both “Set” and “←” together, and “STOP”...
- Page 33 3.Setting Example ℃ mins You can make such a form before you input the data: Prompt Input Data Initial Temperature Running time from C01 to C02 The target temperature in the second segment Running time from C02 to C03 The target temperature in the third segment Running time from C03 to C04 The target temperature in the fourth segment Running time from C04 to C05...
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Page 34: The Use Of Vacuum Accessories
The flanges on MTI furnaces can be readily configured to accept various fittings for vacuum pump connections. Typically, connection to the pump is made by securing stainless steel bellows to either side of the flange by quick locking clamps. - Page 35 2. Standard available vacuum gauges (not included) EQ-CVM-YZ60 EQ-CVM-211-P-LD EQ-PGC-554-LD Anti-corrosive Anti-corrosive Mechanical Digital Digital Gas independent Gas dependent (N2 calibrated) Gas independent (Gauge indicates relative pressure value, -0.1Mpa represents ultimate vacuum while 0 represents atmospheric pressure ) Need additional power Need additional power Max.
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Page 36: The Use Of Various Gases
Warnings: Do not operate this equipment with flammable, explosive, poisonous inside. MTI does not accept any responsibility in case of any accident which might happen during any kind of process due to the usage of materials mentioned above. (If at any times, this equipment is to be used under conditions of hazard to Human health, the sole responsibility belongs to Operator. -
Page 37: Introduction Of The Gas Flow System
For precisely measuring or adjusting the gas flow rates, gas flow meters should be attached to the flange. Note: 1/4'' Tube Fitting is preferred to be used with MTI MFCs and Gas Mixing System. MTI provide three types of gas delivery products... -
Page 38: Maintenance And Equipment Care
MAINTENANCE AND EQUIPMENT CARE 1. Processing Tube http://www.mtixtl.com/processingtubes.aspx 1. To prevent thermal shocks on the processing tube, please always take great care not to heat up nor to cool down the tube at high rates. 2. Regularly check and replace the aged tube if necessary. There is higher chance that an aged tube can break during high temperature process. -
Page 39: Cooling Fan
4. It is normal to observe minor cracks on the liner after the first couple times of trial. Easy repair instruction for chamber cracking issue via alumina coating material below. http://www.mtixtl.com/equipment-applications/MTI-Coating-Instructions-110614.pdf 4. Flange & Foam Block 1. Alumina adhesive material on alumina foam block can help minimize the dust released. Apply a thin layer of alumina adhesive bonding material on the surface of foam block, followed by a few hours curing at room temperature.
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