Environmental Testing

Floor Standing HALT/HASS Temperature and Multi Axis Vibration Chamber - Model Sigma 1000-36

Sigma is a range of Liquid Nitrogen cooled, HALT/HASS chambers specifically designed to interface with a multi axis pneumatic vibration table.

Chamber Dimensions

	Wide (mm)	High (mm)	Deep (mm)
Internal Size	1100	900	1100
External Size	2200	2200	1485

Capacity (Litres)	Ambient Conditions
1089	+10°C to +30°C, 10%RH to 80%RH

Temperature Specifications
Temperature Range	- 100°C to +200°C ±2°C after stabilisation.
Heating Range	- 100°C to +200°C, Approx 2°C to 80°C/Min ROC ( Rate of change).
Rate of Heating (Air Temp)	Up to 80°C/min average empty chamber measured in the air as it enters the Chamber in accordance with lEC600068.
Cooling Range	+200°C to - 100°C Approx 2°C to 80°C/Min ROC ( Rate of change).
Rate of Cooling	Up to 80°C/min average empty chamber measured in the air as it enters the Chamber in accordance with lEC600068.

Vibration Specifications
Vibration Table Size	914mm (36") x914mm (36").
914mm (36") x914mm (36").	The vibration table is supported on four spring isolation mounts can accommodate a maximum317kg test load.
Vibration	Six degree of freedom (6DoF) vibration non coherent broadband by 9XMulti Directional Lubemist lubricated repetitive shock pneumatic Vibrators.
Frequency Range	5-10,000 Hz, with 90% of vibration energy in the 5-4,000Hz band width of maximum low energy in low frequency range.
Acceleration	Up to 100 Grms in Z axis empty table at +25°C to +30°C
Acceleration Tolerance	±1 Grms within one minute of setting. .

Laser welding

Laser welding is performed in an inert gas atmosphere using Argon and can provide spot, stitch and continuous hermetic (vacuum tight) weld in pulsed operation mode in a glove box.

Any weld compatible metals can be laser welded and we commonly laser weld parts made from Aluminum, i.e. Al Alloy 6061 T6 for Package & Al Alloy 4047 for lid.

With their well defined beams, lasers are excellent tools for welding thin materials with localized heating, without effecting the heat-sensitive components.

Laser welding Advantages:

Very high precision welding
Excellent repeatability
Excellent repeatability
Contact-free, very localized energy means low thermal and mechanical strain on parts
Low heat input/minimal heat affect
Fine grain structure/excellent weld quality
No filler material
Non-contact processing eliminates unwanted stress on materials

Laser welding Equipment Specifications
Model No	LW150AE-1E
Avg. Power	150W
Pulse Energy	70J
Peak Power	7KW
Pulse Width Range	0.25 to100ms
Repetition Speed	1 – 200pps
Frequency	200Hz
Fiber	0.6mm SI
Focus Head	FX120/100HC
32 Programmable weld schedules
Dimension of the laser welding face 200mm x 200mm
Height of the face from the base 100mm max

Vibration/Shock Machine/Bump Test Facilities

Vibration: A body is said to be vibrating when it executes an oscillatory motion about a reference position of equilibrium.

Vibration testing is accomplished by introducing a forcing function into a structure, usually with some type of shaker. Alternately, a DUT (device under test) is attached to the “table” of a shaker. Vibration testing is performed to examine the response of a device under test (DUT) to a defined vibration specification.

Two typical types of vibration tests performed are random and Sine test. Sine (one-frequency-at-a-time) tests are performed to survey the structural response of the DUT. A random (all frequencies at once) test is generally considered to more closely replicate a real world environment, such as road inputs to a moving automobile.

Shock Machine No:1	Shock Machine No:2 With Slip Table	Shock Machine No:3	Shock Machine No:4 With Slip Table	BUMP MACHINE
Make: Unholtz Dickie Model: SA15-S452/LP	Make: Unholtz Dickie Model: SAI60F-R24C/ST	Make: Unholtz Dickie Model: SA15-S452/LP	Make: Saraswati Dynamics Model: SEV300	Make: Tarang Kinetics Model: TBTM-6060
Table Size: 13.3“ [dia]	Table Size: Slip Table (36”X36”) Vertical 24” [dia]	Table Size: 13.3“ [dia]	Table Size: Slip Table(32” x 32”) Vertical 11.8“ [dia]	Table Size: 60 X 60 [cms]
Displacement: 2” [51mm]	Displacement: 2” [51mm]	Displacement: 2” [51mm]	Displacement: 2” [51mm]	Peak Acceleration: 3 to 60g (+10%)
Force: 2000 Kgf	Force: 5500 Kgf	Force: 2000 kGf	Force: 2500 Kgf	Rate of Bump: 1 to 3/sec [adjustable]
Max Accl: Sine: 90g Random: 75g	Max Accl: Sine: 85g Random: 89.5g	Max Accl: Sine: 90g Random: 75g	Max Accl: Sine: 100g Random: 75g	Pulse width (adjustable): 3 m sec to 15 m sec (+10%)
Max Velocity: Sine: 70 in/sec Shock: 95 in/s	Max Velocity: Sine: 70 in/sec Shock: 95 in/s	Max Velocity: Sine: 70 in/sec Shock: 95 in/s	Max Velocity: Sine: 70 in/sec Shock: 95 in/s	Max Load: 113.5 Kgs [250lbs]

5.89 Ton Vibration Machine Specifications
Make	Unholtz Dickie
Model	SAI60F-R24C/ST
Table Size	Slip Table (36”X36”)Vertical 24”
Displacement	2”[51mm]
Max Accl	Sine: 89g Random: 85g
Max Velocity	Sine: 70 in/sec Shock: 9 5 in/s
Sine & Random Force	13000lbf&12500lbf

2.0 Ton Vibration Machine Specifications
Make	Unholtz Dickie
Model	S 452-LB
Table Size	Vertical 13.3”
Displacement	2”[51mm]
Max Accl	Sine: 89.0g Random: 89.0g
Max Velocity	Sine: 70 in/sec
Sine & Random Force	4500lbf