Product Name

Rapid temperature test chamber-water cooling

Model 

KTB-225L (no load 12 ℃ /min )

Effective volume

225L​

Inner chamber size

W 500 mm*H 750 mm*D 600 mm

External chamber size

W1000mm * H 1650mm * D1200mm (subject to actual size)

Performance 

Temperature range

-55 ℃ to + 125 ℃​​​

RAMP temperature range

-55 ℃ to +125 ℃

Temperature fluctuation

± 0.5 ℃

Temperature deviation

≤± 1.5 ℃

Temperature uniformity

≤ 2.0 ℃ ( -55~+125 ℃ range) ;

RAMP temperature

change rate

Linear, adjustable within 1 2 ℃ /min (no load)

Temperature heat 

and cold overshoot

≤5 ℃

Maximum load

Each layer is 20KG load , with 2 layers in total.

Load

None 

Noise 

≤ 75dB ( A sound level)

Meet the test
standards

IEC60068-2-14:2009) Environmental Test Part 2 : Test N Temperature variation

(IEC60068-2-1:2007) Low temperature test method .

(IEC60068-2-2:2007) High temperature test method .

Structure and materials

Outer chamber

Double-sided spray-coated galvanized color steel plate .

Inner chamber

SUS304# stainless steel plate .

Insulation layer

Hard polyurethane foam + ultra-fine environmentally friendly glass fiber cotton

Door

Single door type

Observation window

The single door is equipped with a large 3- layer vacuum glass observation window (30 * 40CM ) that is heat-generating and sweat-proof. The door frame is equipped with an electric heating (automatic adjustment) anti-frost and anti-condensation device, so that you can clearly observe the test status of the test sample in the box through the observation window at any time.

Seal

Original imported silicone sealing strip

Pressure balance port

1/2 inch drainage sharing type

Lamp

The observation window is equipped with a set of 9W energy-saving lamps .

Air supply temperature measurement system

Air supply

High uniformity upper air outlet and lower air return

Circulation motor

2 Taiwan TECO 1HP motors

Wind wheel

Multi-blade centrifugal circulation fan , high and low temperature resistant aluminum alloy blades

Sensors

American PT100 platinum resistance temperature sensor

Chamber refrigeration system

Compressor

2 semi-hermetic German compressors

Refrigerants

Non-fluorinated environmentally friendly refrigerant

(DuPont, USA) HFC R404A/R23

Condenser

Shell and tube water condenser

Evaporator

High efficiency multi-stage fin evaporator with hydrophilic membrane (thickened fin type)

Oil separator

Emerson

Expansion valve

Danfoss Thermostatic Expansion Valve

Solenoid valve

Danfoss, Denmark

Sight glass

Danfoss, Denmark

Other accessories

All are international brand high-quality products

System Features

1. Adopt (BTHC) balanced temperature and humidity control mode, automatically switch the refrigeration system flow according to different working conditions, cut off the redundant system in the constant section to achieve energy-saving operation and cooling control.
2. Multi-stage evaporator combination can obtain more uniform and efficient cooling exchange efficiency and cooling output ;
3. Flow control is automatically adjusted by the matching thermal expansion valve

Air-Cooled Chiller: JLSF-10HP

Temperature control range

5℃- 35℃

Nominal cooling capacity

27500 Kcal/h, 31 KW

The total input power

8.83 KW

Power supply 

3-PH, 380V, 50Hz

Controller

Key and LCD display, Automatic control

Size and weight

1450*720*1520mm, 280KG

Refrigerant (R22)

Control mode: capillary tube

Compressor*2

10 HP-Totally enclosed scroll type, 3.75*2 KW

Evaporator

Water tank copper coil

140L capacity

5.2 m³/h flow

Condenser

Hydrophilic aluminum foil sleeve internal thread copper pipe, 9.52 mm

Cooling fan(2 set )

Dia: 450 mm

Power: 0.29*2 KW

Air volume: 11160 m³/h

Water pump

Power: 0.75 KW

Water-lift: 22 M

Flow: 12 m³/h

Copper tube

High-efficiency copper tube , 1.2 mm

Refrigerant cooling mode

Air-cooling

Cold source :Air

Cold water pipeline

304 Stainless steel outer wire

DN25 Scupper

DN40 Chilled water outlet

DN15 Tap water outlet

DN40 Chilled water inlet

DN25 Overflow

Heating system

Heater

Bare wire nickel-chromium alloy electric heater

Control method

high-precision contactless switch control through SSR solid-state relay.

Controller and control circuit — High-precision resistive touch screen, Visonicom TH series

Control method

High-precision resistive touch screen

show

7-inch TFT true color LCD display . (resolution 800*480 )

Input

2 groups of input, support dry-wet bulb PT100 and humidity transmitter, thermocouple T , K , E, etc.

Accuracy

0.1 high-precision sampling

System Capacity

100 groups of programs * 1000 segments (can be cycled 999 times each) , the number of segments required for each group of programs can be divided arbitrarily , and each group of programs can be freely linked to each other (up to 20 steps)

Operation Mode

Fixed value (slope) / program operation mode .

Output method

PID+LCR automatic forward and reverse bidirectional synchronous output .

Software Features

1. Temperature curve .
Paperless record : Built-in recording program, the controller's internal memory can store 24-hour operation for 300 days . It can easily and automatically generate temperature and humidity curve files and save them as XLS tables ;

2. Perfect interface .
External USB port : can be directly connected to the computer and printer to realize the online printing of local data, and the USB port can be used to easily export historical curves and other data using a USB flash drive. External LAN standard network interface : no need to configure a special server , it can be easily connected to the company's computer local area network, and one can connect and monitor up to 16 devices , which is convenient and fast.

3. Real-time monitoring can achieve:

Simultaneously monitor the operating status of 1 to 16 controllers , such as real-time data of the controller, signal point status, actual output status, etc. Support remote (external network) fault diagnosis . The technician can open the IE browser through the network, enter the IP address of the controller , and then enter the login interface to select operation or monitoring for diagnosis.

4. Timing control .

2 sets of timing output control interfaces , with 10 time control modes , can provide switch signal output according to program setting requirements. Please note that it is only a control signal, and the test power supply in the box needs to be connected separately and has a dedicated power supply system .

5. Fault display .

16 groups of fault alarm outputs, humanized prompts of fault causes and troubleshooting methods in Chinese and English

6. Appointment start .

All test conditions can be set to start the machine at a scheduled time .

7.Connect to the control system .

Comes with computer control software and related accessories . 

Main components of control circuit

The main components of the control circuit are all high-quality brands ( the right picture shows : German Schneider electromagnetic switch )

Over temperature

protector

Japan Omron

Protection function

1. Compressor overheat, overcurrent, overpressure protection ,

2. Condensing fan overheat protection

3. Controller AC power supply lightning protection device

4. Over - temperature protector in the box ( adjustable )

5. Test chamber temperature fuse and air conditioning channel extreme over-temperature protection

6. Centrifugal fan motor overheat protection

7. Main power phase loss , leakage , overload , short circuit protection , power-off protection when power distribution cabinet is opened , The main power supply is equipped with a fuse-free protection switch .

8. Test product over-temperature protector (independent) .

Other components

(1) 2 layers of stainless steel sample rack . Load-bearing capacity: 20 kg/ layer.

 ( The total load of samples in thechamber shall not exceed: 100 kg ). .

(2) 100mm diameter test hole soft plug type 1

Conditions of Use

1. Ambient temperature : 5 ℃ -35 ℃ ;

2.Relative humidity : ≤ 85%RH;

3. Atmospheric pressure: 80kPa~106kPa

4. No strong vibration around

5. Supply voltage :

5.1 Power supply: 380V AC (±10%), (50±0.5)Hz three-phase 5-wire + protective ground wire , ground resistance ≤ 4Ω ; Power capacity: rated total power 1 28 kw

5.2 Cable requirements: One five-core (four-core 50 -square copper wire cable + 16 - square copper wire protective grounding wire) cable ( 4 meters long), using a 3P+N 250A leakage switch.

5.3 The sample power control terminal adopts relay contact control mode, AC220V , 2A (when the machine is running normally, the contact is closed; when the equipment stops or fails, the contact disconnects the sample working power supply and enters the protection state)

5.4. Rated total power: 128 KW, Maximum operating power: 90 KW

5.5 . Maximum operating current: 160 A

6. Frequency : 50±0.5Hz

7. Humidification water ; resistivity ≥ 500M Ω ;

8. Ambient air quality requirements: No high-concentration dust and flammable or explosive gas or dust , no strong electromagnetic radiation source nearby .

9. Do not place items that are flammable, explosive, or produce volatile or corrosive gases in the box for testing or storage.

10. Standard test sample placement requirements:
10.1 The total mass of the test sample shall not exceed 80KG per
cubic meter of the box. 10.2 The total volume of the test sample shall not exceed 2/5 of the box volume, and the placement area of each horizontal surface in the box shall not exceed 2/5 of the cross-sectional area . Otherwise, the performance of the test box may be seriously affected or it may not work properly.