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Programmable Temperature Alternative Test Chamber
QTL-330C by Forced Air Cooling Rate 5℃/min
Technical Specifications:
Control Mode | Cold Balanced Control System |
Operating Temp. & Humid. Range | +5deg ~ +35deg; <85%R.H. |
Temp. range | -40℃ - 150℃ |
Temp. fluctuation | ±0.5deg; |
Temp. uniformity | ≤2.0deg; |
Temp. Deviation | ≤1.0deg; |
Temp. Heating Time | heating rate 5 deg C / MIN |
Temp. Cooling Time | cooling rate 5 deg C / MIN |
Power Supply | AC380V, 50/60HZ, Three-phase (Specified by User) |
Exterior Material | stainless steel with baking paint |
Interior material | SUS304# Stainless steel |
Insulation material | Rigid Polyurethane foam |
Refrigeration system | Mechanical cascade refrigeration system; Fin type radiator |
Circulation system | Mechanical convection system |
Humidification Water Supply | Automatic water regulating, recoverable supply system, water shortage alarm system |
Controller | Touch Screen Controller |
Safety devices | Overheat protector Switch, Compressor overload protector, Fault alarm system |
Model Selection:
Model | Temp Range | Internal Dimension (W x H x D) mm | Exterior Dimension (W x H x D) mm |
QTL-330C | -40℃~﹢150℃ | 580*750*765mm | 880*1730*1970mm |
Remark: Heating/Cooling Rate 5℃/min, forced air cooling | |||
Support custom made dimension |
Choosing a correct chamber size depends on the application and your
available floor space. The suggested ratio is about 1:3 between
product volume and the working volume of the chamber.
⅓ product to ⅔ empty space around the product ensures adequate
airflow to the test sample and makes sure your test is conducted
properly. Items that allow for airflow (such as a computer chassis
with plenty of air vents) can take up a larger percentage of the
test volume.
Externally, consider that these machines create a lot of heat, and
with test cycling up and down the temperature spectrum, the
chambers themselves require good air circulation. Some units will
require up to three feet (or more) of clearance in all directions
to work properly.
Depending on whether the test product is a live load, a larger
chamber may be needed to dissipate heat produced by the test
subject, adversely affecting the chamber’s pull down times or
humidity system.
Sand, dust, and high altitude chambers do not need a 1:3 ratio of
product volume and empty space. The air speed inside the chamber is
already very high for the products and makes a 1:3 ratio
unnecessary.
These chambers should be just slightly bigger than your test
product.
Features:
1, Chamber exterior material is stainless steel with
environmentally baking paint resists corrosion and provides impact
resistance. Interior material is SUS304# stainless steel with
excellent heat resistance and easy to clean.
2, Touch screen controller is designed to save chamber programming
and setup time with temperature limit and alarm to protect your
product.
3, Safety relay connection is provided to protect your device under
test by removing power to it when the chamber is not running.
4, RS-232 communications is for computer connection, programming
can be set on computer by software, monitor testing process and
automatically execute power on/off functions.
5, Fog-free viewing window and interior light makes viewing
workspace freely and observe the test under best conditions.
6, Adjustable product shelf slides out for easier product access.
Shelf design is non-tipping and supports large product loads.
7, Left side of chamber with diameter 50mm (support customized)
cable port for power-on test.
8, Optional electronic humidity sensor is used on all test chambers
for accuracy and minimal maintenance.
Optional Accessories:
1, Cable Port: Size of cable port is available for 100mm, standard
is 50mm;
2, Water purifier RO 80: Continuously provide purified water for
humidifying heater and wet-bulb
3, Dehumidifier: The rotation regenerating dehumidifier M-120
ensures precise control of low humidity (10C, 15%RH) for
electrostatic reliability tests.
4, Defrosting Device: The chamber automatically detects and melts
the frost on the evaporator when operating below 0deg in order to
allow continuous operation
5, Electronic humidity sensor: Precision Humidity Sensor with
stainless steel protection tube