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Constant Temperature Humidity Test Chamber

Constant Temperature Humidity Test Chamber
  1. DESCRIPTION & SPECIFICATION

CONSTANT TEMPERATURE HUMIDITY TEST CHAMBER

GENERAL INTRODUCTION

Constant temperature & humidity test chamber is mainly applied to test & verify materials,products in environment such as heat, cold, dry,humidity as well as other comprehensive environmental condition. 

Constant temperature & humidity test chamber can be used to test electronic, electrical,communication, instrument, automotive,plastic, metal,food,beverage, chemicals,building materials etc. by putting those products,parts,components in high/low temperature,damp heat ,constant temperature & humidity to verify their properties as well as parameter variants after environmental test. 

FUNCTIONAL FEATURES

External test chamber is made of dual-side high-temperature electrostatic resin paint galvanized metal sheet, while internal test chamber is designed with SUS#304 high-low temperature resistance stainless steel material with its bottom with SUS#304 stainless as well as high-strength square tube connection reinforcement. 

Insulation material, in accordance with special heat-resistance purpose, is selected from frame retardant high strength PU polyurethane foam insulation material. 

Single door design with its size as width at 500mm and length at 600mm, is designed with observation window on test chamber door. Door frame is designed heat resistance, anti-frosting, anti-condensing devices to enable test technician have a good observation view of complete test process. 

Cable Hole (Test hole) with its diameter at 50mm on left of test chamber with silicone sealing and stainless steel cover is made and cable hole at 100mm for optional. 

To achieve an excellent test result, sealing process for test chamber is made with silicone rubber strip; sample holder with load-bear capacity of more than 20kg per layer. 

Air Supply System with constant air flow as well as uniform air distribution is driven by branded asynchronousmotor, multiple-blades centrifugal circulating blower as well as high-performance sensors. 

Refrigeration System is introduced with French Tecumseh compressor for dehumification while Germany Bitzer compressor for refrigeration system,while use environmental friendly refrigerant HFC R404A, R23A. 

Heating System is designed with SSR (Solid-State Relay) &controller to provide high accurate non-contact switch control, and the heating tube introduced with Naked Wire Nickel Chromium Alloy Electric Heating Tube. 

Control Method for walk-in Test Chamber is introduced with Programmable high accuracy micro computer controller, use cold mirror dew point instrument control temp. humidity system. cold mirror dew point instrument control temp. Humidity system.

P.I.D. ,BTC balance temperature control method(thermal compensation function)+DDC digital cold control +DEC digital electric control (Temperature change test program setting) .

TECHNICAL PARAMETERS

Model LTH-80LTH-150LTH-225LTH-408LTH-800LTH-1000
Internal Dimension
 (W×H×D) mm
400×500×400500×600×500500×750×600600×850×8001000×1000×8001000×1000×1000
External Dimension
 (W×H×D)mm
650×1650×1270700×1700×1370700×1750×1420800×1800×16201200×1900×16201200×1900×1820
Temp. Range: Low Temperature: A: 25℃;B: 0;C: -20; D: -40 E:-70     High Temperature: 150 200 Optional)
Humidity Range 20%~98%R.H. (10%~98%R.H./5%~98%R.H. Customize available) 
Analytic Accuracy 0.1; 0.1% R.H
Uniformity ±2.0; ±3.0% R.H.
Control Accuracy ±0.5; ±2.5% R.H.
Temperature Rising/Falling Speed RateTemp. Rising Approx 1.0~3.0 /min; Temp. Cooling Rate 0.5~1/min.
Temperature Humidity Control Graph 1.png  
Machine Material Inner with SUS #304 Stainless steel , External with SUS#304 Stainless steel or Cold-rolled powerder coated material .Insulation material with Polyurethane material . 
Cooling SystemAir cooling or Water cooling /Single segment compressor 
Compressor Fren ch Tecumseh ; German Bitzer ; Japan Mitsubishi 
Protection Devices Fuse-free switch, overloading protection switch  for compressor, high and low voltage coolant protection switch, over-humidity and over-temperature protection switch, fuses, fault warning system, water short storage warning protection
Optional Accessories  Inner door with operation hole , Recorder, Water Purifier, Dehumidifier
Power AC220V , 1ph 3 lines, 50/60HZ ,  AC380V   3ph  5 lines , 50/60HZ
Approx.Weight 160200260350420460


DONG GUAN LMET TEST TECHNOLOGY CO.,LTD