CZOCHARLSKI CRYSTAL GROWTH SETUP
CZOCHARLSKI CRYSTAL PULLER
This setup consist of
1. a. Crystal Puller Mechanical Setup
b. Translation Unit
c. Rotation unit
2. a. Programmable PID Temperature Controller
b. Optional USB Host Interface
3. Thyristor Unit for single zone furnace
4. Furnace
5. Windows Based Software
1a. Crystal Puller Mechanical Setup
Features
Table top model
- Effective Translation range 0 - 300 mm
- Translation function. Fast positioning and slow growth rates; 0.001 mm / hr to 50.0 mm/hr.
- Microprocessor - controller drive units provide precise, digital control of rotation / translation functions and fast positioning
- Load capacity - 7 kg / Cm2
- Translation shaft - Stainless steel
- Traveling guide - SS rod with linear bearing
b. Translation Unit
Pictorial View of Translation and Rotational Unit
Programmable Micro Controller based Stepper motor control drive for ntranslation
* Translation rate :- Programmable from 0.001mm/hr
* Stepper motor Torque range :- 7Kg/Cm Basic step 1.8°.2
* Micro stepper Drive :- 400,000 steps/revolution (default)200,000,100,000,50,000,20,
000 10,000 5000,2000,1000,800, 400,200 steps/revolution
selectable using software
* Control :- Mode:Manual fast/slow mode for positioning seeding and lifting
from 0.001mm/hr to 400.000mm/hr
* 4 line Alphanumeric LCD with keypads provided for user programming
* RS232C/RS485 Interface for computeer connectivity
c. Rotational Unit
Programmable micro controller based Stepper Motor control drive for rotation.
- Translation rate : Variable from 0.001 rpm to 60.00rpm
- Stepper Motor torque range : 7Kg/cm2
- Micro stepper Drive : 10000 steps / revolution (default)
- Control : Programmable through software
- Mode : Fixed, ACRT & Bi-directional
- 4 line Alphanumeric LCD with keypads provided for user programming.
- RS232C/RS485 Interface for computer connectivity
2a. Programmable PID Temperature Controller
- Temperature Range : 0-550° C / 0 - 1200° C / 0 -1600° C
- Measurement Resolution : .01°
- Accuracy : ±0.1° C
- Input Sensor : K - T y p e / R - T y p eThermocouple
- Control : Intelligent PID control with built in Auto tunning facility
- Control mode : Set Point/Ramp/ Soak / Holdmode
- Program Segment : 20 segment with Ramping / Soaking with 0.01° C Resolution
- Operation mode : Single Touch Manual / Auto Mode
- Output signal : Voltage 0-5V / Current 4-20mA
- RS232 Interface for computer data logging
b. Optional USB Host Interface
- Provision for USB flash drive interface card for continuous standalone data logging.
3. Thyristor unit for Furnace
SCR based voltage regulator for Furnace Temperature Controller
- Single Zone resistive type
- Temperature Range : 0 - 400°C
4. Furnace
- Two Nos of SCR with proper Heat Sink and Snubber circuit protection
- Pulse Amplifier provided for isolation
- Firing circuit provided to vary the 0-180° firing angle of the thyristor.
- Power
# Input 230V AC 50Hz
# Output 0 - 230V
# Capacity 1Kw / 2 Kw / 3 Kw
- Suitable connector provided to interface the programmable Temperature Controller.
5. Windows Based Software
Complete Crystal Growth Application Software with data logging, graphics displaying of various parameters etc.,
PICTORIAL VIEW OF OUR CRYSTAL GROWTH SETUP
Vi Microsystems Pvt. Ltd.,
Plot No : 75, Electronics Estate
Perungudi, Chennai - 600 096.
Ph:91-44-24961842, 1852,Fax:91-44-24961536
Mail : sales@vimicrosystems.com
Web : www.vimicrosystems.com