IEC 68 Constant Temperature Humidity Environment Test Chamber For Electronic

Item

Model

Constant Temperature and humidity test chamber

408L

Function

It simulates the products in the chamber where the climate condition of different temperature and humidity, such as high-low operation and storage, temperature cycling, high-low temperature and high-low humidity, moisture condensation etc. to check its adaptability and changing performance.

It’s required to conform to international regulation (IEC, JIS, GB, MIL…) to reach the consistency (including test schedule, condition, method) under the international standard.

Sample application

The chamber applies to:

compatibility test for store, transportation and application of electric, electronic products, unit components, parts and other materials under high or low temperature.

The following samples are prohibited to be tested and stored:

• Inflammable , explosive and other volatile substances;
• Corrosive substance;
• Biont;
• Strong electromagnetic emission source.

Volume, size & weight

Volume

Internal size

Exterior size

Weight

408L

W600*H850*L800mm

W1080 x H1300 x D1750mm

400KG

Performance

Test condition

Temperature:+25℃, Humidity: ≤85%, no samples in the chamber

Test method

GB/T 5170.2-1996 Temperature test chamber

GB/T5170.5-1996 Temperature and humidity test chamber (only temperature and humidity)

Temperature range

-40℃→+150℃ (adjustable)

Temperature fluctuation

±0.5℃

Temperature accuracy distribution

±2.0℃

Humidity range

20%～98%R.H (temperature at 20℃-85℃)

Humid. fluctuation

±2.5%R.H.

Humidity accuracy distribution

±3.0%.

Heat-up time

-40℃ → +150℃ Heat up for 2-4.0℃/min

Cooling time

+150℃→ -40℃ Cooling for 0.7-1.0℃/min

Load condition

Testing space is not more than 3/4 of the total space, no heating

Sample holder

Stainless steel punching stencil

Relative humidity and temperature control range (refer to fig.)

Meet the technical standards

GB/T 2423.1-2001 Test A: Low temperature test method

GB/T 2423.2-2001 Test B: High temperature test method

GJB 150.3-1986 High temperature test

GJB 150.4-1986 Low temperature test

IEC68-2-1 Test A: Cold

IEC68-2-2 Test B: Dry heat

GB11158 “Technical Conditions for High Temperature Test Chamber ”

GB10586-1 “Technical conditions for Damp heat test chamber ”

GB/T 2423.2 “Basic environmental testing procedures

for electric and electronic products B: High temperature test method”.

GB/T 2423.3 “Basic environmental testing procedures

for electric and electronic products Ca: Constant damp heat testing method” etc.

Structure characteristics.

Insulated enclosure structure

External material: SUS304 or stoving varnish

Inwall material: SUS304

Insulation material of box body: flame retardant fire rigid polyurethane foam

Door thermal insulation material: flame retardant fire rigid polyurethane foam

Air conditioning channel

Centrifugal fan:

Heater, evaporimeter, outfall, temperature sensor

Test chamber standard

Window 330x450x40mm 3 vacuum layers

Anti-explosion handle

Door hinge: SUS #304

Lamps in the chamber: 11W

Access port: φ50mm or φ100mm 1pc or more.

Door

Single door, open from left, handle is at right; With viewing window: W300xH450mm, lamp window/condensation prevention thermal device

Controller

Control screen, overtemperature protection setting

machine room

Refrigeration units , water pans , outfall

control cabinet for power distribution

Switchboard fan, ventilator

Heater

Heating system: cycling heating from finned-tube Stainless steel electric heater

Humidifier

Oven humidification system, cycling winding system

Power line hole and outfall position

located at the back of chamber

Cooling system (Binary cascade refrigeration)

Cooling compressor

Tecumseh (France)

Evaporator

fins-tube evaporator

Condensator

Air-coolled tube-type condensator

Expansion system

Refrigeration system of volume control (capillary)

Evaporative condenser

Stainless steel brazing plate-type heat exchanger

Chiller control

Operation of cooling machine can be adjusted automatically by control system according to the test condition

evaporating pressure adjustable valve

Cooling loop of compressor

Freezing medium

R404a (Eco-friendly, Ozone loss rate at 0)

Controller

Independent R&D software (Taiwan)

Temperature and Humidity controller

Imported 7.0 inch LCD touch screen control, programmable of temperature and humidity; 100 groups of program and 1000 groups of memory, each for 99hrs 59min and can be set as required with groups of PID control function.

Controller specifications

Precision: Temp. ±0.1℃＋1digi, humid.: ±1%R.H＋1digit

Distinguishability: Temp.: ±0.01℃, humid.:±0.1%R.H.

slope temperature; 0.1～9.9 adjustable.

With warning function and up& down limitation standby

9 groups of PID control parameters and PID auto-calculation.

Dry and damp ball with auto correction.

Function of page display, program volume and control function

• Touch screen operation, no need to input by key pressing;
• Temp. and Humid. Set (SV) with true (PV) value shown.
• Display of current program No., phase, time left and cycling times.
• Run the operation of accumulative time.
• Program set value of Temp.& humid. shown as curve;
• At least 5 phase of temp. & humid, time can be input on the sole program editing page.
• Language can be switched between English and Chinese;
• Fault page shown;
• Back light adjustable of screen;
• Protection function can be set by time, TIMER can be turn off by manual;
• Program groups available: 100 max. PATTEN.
• Memory volume available: 1000 SEGMENTS.
• Repeat executive command: up to 90 times for each command.
• Program with editing, cancel and insert available;
• Time set of SEGMENTS: 0～90Hour59Min;
• Module device controlled by program;
• Electricity cut memory, with auto start-up and executive program function after switch on;
• program execution with display of curve diagram;
• With auto adjustable freeze function;
• Reservation of start-up and turn-off available;
• Data and time adjustable;
• Key-pressing and page lock (LOCK) available.

Safety protection device

Cooling system

• compressor overheated
• compressor overflowed
• compressor overpressed
• condensate fan overheated
• oil pressure protection of compressor

Test chamber

Adjustable overheat

Air conditioning channel overtemperature limit

Wind motor overheated

Other

• phase sequence and open phase protection of main power supply
• leakage protection
• heating, humidification and Dry burning-resistant protection
• overload and short circuit protection
• overtemperature outage protection

Other equipped parts

power control contactor of sample testing

Contactor of relay control: within AC220V, 2A (contactor closed under normal running, when chamber stops or of malfunction, contactor open).

leakage breaker of main power supply

AC220V, 50Hz＋Grounding wire.

Accessories

Power

(Standard)

Five core single-phase three-wire and 1piece of protection grounding wire (optional)

Access port

φ50mm, φ80mm, φ100mm, φ120mm available according to your requirement and cab be customized on the premise that not affect the machine performance.

USB interface (Standard)

All the history curve and history data can be downloaded from controller as Excel or JPG according to date.

Remote Control System (optional)

Transportation

The chamber as a unitary to be transported

Delivery size

Weight

Max. size (package not included): refer to “exterior size”

Max. delivery weight (package not included): refer to “Weight”

Usage requirements

Assured by users as below requirements

Installation position

• With leveling ground and good ventilation;
• No strong shock near the chamber;
• No strong electromagnetic field near the chamber
• No inflammable , explosive , corrosive material and dust
• Surrounding size for chamber operation and maintenance:

A: not less than 10cm

B: not less than 60cm

C: not less than 60cm

D: 225 type: not less than 80cm

408 type: not less than 90cm

1000 type: not less than 120cm

Condition

Temperature: 5℃～30℃

Humidity: ≤85%

Air pressure: 86kPa～106kPa

Tap water: only for damp heating equipment with pure water machine

Water flow ≥200kg/h, pressure: 0.1Mpa ~ 0.25Mpa.

Tap water conforms to GB 5749-1985 drinking water standard; Remark: equipped with DN15 male adapter of pure water machine

Power supply condition

Total power

Max. current

Voltage

• AC220V + Protection grounding
• Voltage fluctuation range: AC(220±10%) V
• Frequency fluctuation range: (50±0.5)Hz
• Resistance of protection grounding wire less than 4Ω.
• It’s required to equipped with air or motive switch of corresponding capacities, which is also used only for the chamber

8.5KW

13A

380V