|
|
Construction
:
The construction of the Chamber will
be such to avoid direct radiation
of heat on the test specimen. The
floor of the chamber will be so designed
as to permit the dust fall in to the
hopper for recirculation of supporting
specified load of the floor area. |
| Exterior
Chamber |
:
|
Will
be made of 18 swg CRC M. S. Sheet
with 3 coats of paint
or
18 swg Stainless Steel |
| Interior
Chamber |
:
|
Made
of 18 swg Stainless Steel |
|
Heating
System :
For temperature uniformity in the chamber,
low surface loading sealed tubular heaters
will be provided as per IS 4159. The
heaters will be fixed in conditioning
space in the chamber duly baffled to
avoid direct radiation. Heat
Input Controlling : Through Solid
State Triac Firing Energy Regulator
will control with 0 to 100 % proportional
control for heating.
|
| Dust
Agitating Mechanism |
-
Dust Agitating Mechanism will be
provided with Fan with Motor of
sufficient capacity without allowing
to heat up unduly during constant
operation of 200 hours.
-
Pressure Vacuum will be provided
in the Dust Spray Chamber.
-
Provision of using, either fan or
vacuum or both can be used at a
time, will be provided.
-
Average dust sprayed will be 25
gms ±5 gms in 5 minutes.
|
Instrumentation
Solid State Digital Temperature Controller-cum-Indicator
will be provided with PT-100 Temperature
Thermocouple.
Control Panel
Separate Control Panel on top of the
Chamber will be provided with Contactors,
On/Off Switches, Fuses, and Indicating
Lamps.
Wiring
The wiring, will be channel type with
suitable current rated copper wire
as per, IS Code.
|
Safety
Protection
- Overload
Protector for motor.
-
MCB for heaters.
-
Safety cut off thermostat with audiovisual
alarm for over shooting temperature.
- Back
up Fuse protection for mains and
individual circuit.
|
| Other
specifications
|
| Temp.
Range |
: |
Amb.
+5°C to 80°C 1°C (OR
As per Customer's Requirement)
|
| Gradient
in Space |
: |
Less
than 1.5°C |
| Insulation |
: |
75
mm Thick Glass Wool Insulation |
| Door |
: |
Double
walled full front opening door,
insulated with interior Stainless
Steel lining. |
| Gasket |
: |
To
avoid leakproofing, the chamber
will be provided with gaskets
for the Chamber and for the Door. |
| Mounting
Trolley |
: |
Mounting
Type Trolley with Casters for
Portability will be provided. |
| Hinges
& Latches |
: |
Heavy
duty Hinges with Toggle Type Locking
Arrangement. |
| Power
Supply |
: |
220/415
V, Single/Three Phase Neutral,
15/30 amp. |
| Size |
: |
0.8
cubic meter-As per Standard (OR
As per Customer's Requirement) |
| |
|
|
| Standards |
: |
JIS-D 0207, IS-9000 Part XII-1981
or both can be combined |
-
Pressure Vacuum will be provided
in the Dust Spray Chamber.
|
-
Provision of using, either
Fan or Vacuum or Both can
be used at a time, will be
provided.
|
|
