Different ESPEC Hast Chambers Model and Function Introduction

The ESPEC EHS-221(M) hast test chamber with 355*355*426mm (W*D*L) test area and 0.1 ~ 0.4MPa pressure range which could meet our testing requirement. So we have ordered one piece ESPEC EHS-221M hast chamber for IC chips highly accelerated stress test work. In fact, There are many types ESPEC hast chambers on the market, We did a comparison of the different models of ESPEC hast chambers before we order this machine.

I have to say, This ESPEC EHS 221M hast chamber which we have ordered has a perfect structure design. So if you need a hast accelerated aging test chamber, Please don’t hesitate to buy this model. This article will much easier for you to understand each model of ESPEC hast chamber’s test room, pressure range and the testing performance difference.

one piece ESPEC EHS 212M hast chamber and one piece ESPEC EHS 212MD hast chamber stay together

According to the user manual of ESPEC hast test chamber, For the humidifying water, Please make sure that you will use pure water not less than 0.05MΩ.cm (20μS/ cm or lower). The temperature, humidity indication and control operations for ESPEC hast test chambers are based on the steam pressure table of table A.1, Annex A, IEC 60068-2-66 test standard.

Model NumberInterior DimensionsInterior VolumeTemperature RangeHumidity ControlPressure Ranges for Different ESPEC Hast Chambers Models
EHS-212M11.5 x 11.6 x 11.50.64 cu. ft.+105°C to +142°CYesPressure: 0.02 to 0.196 MPa gauge (0 to 28 psig)
EHS-222M15.5 x 16 x 15.51.62 cu. ft.+105°C to +142°CYesPressure: 0.02 to 0.196 MPa gauge (0 to 28 psig)
EHS-212MD11.5 x 11.6 x 11.50.64 cu. ft.+105°C to +142°CYesPressure: 0.02 to 0.196 MPa gauge (0 to 28 psig) . Two chambers in one unit.
EHS-222MD15.5 x 16 x 15.51.62 cu. ft.+105°C to +142°CYesPressure: 0.02 to 0.196 MPa gauge (0 to 28 psig) . Two chambers in one unit.
EHS-412M11.5 x 11.6 x 11.50.64 cu. ft.+105°C to +162°CYesPressure: 0.02 to 0.392 MPa gauge
EHS-412MD11.5 x 11.6 x 11.50.64 cu. ft.+105°C to +162°CYesPressure: 0.02 to 0.392 MPa gauge (0 to 57psig). Two chambers in one unit.
EHS-431M22.0 x 22. x 22.4.00 cu. ft.+105°C to +162°CYesPressure: 0.02 to 0.392 MPa gauge. Cylindrical workspace

Let me explain, EHS 221(M) hast chamber with W14×H14×L16.8 inches test room size, EHS 222(M) hast chamber has W15.5×H16×L15.5 inches test room dimension. Meanwhile, This two models espec hast test chambers’ temperature range are 100% same. Therefore, We can simply consider that both EHS 221(M) espec hast chamber and EHS 222(M) espec hast chamber has a pressure range difference.

ESPEC EHS-221(M) hast test chamber

Model DescriptionEHS-211 (M)EHS-211 MDEHS-221 (M)EHS-221 MDEHS-411 (M)EHS-411 MD
Pressure Vessel ConstructionCr-Ni-Mo Stainless Steel Plate
Door ConstructionCr-Ni-Mo Stainless Steel Plate
Outer Shell ConstructionCold-rolled steel plate (SPC Class1) with melamine resin baked finish, FRP (Fiber reinforced plastics) resin
InsulationGlass Wool for Different Model ESPEC Hast Chambers
Pressure Vessel ComponentsTemperature sensor (Thermocouple type T 〔Copper/Copper-Nickel〕 for measuring chamber temperature,humidifying water temperature, wet-bulb temperature), herter, specimen signal terminals, air-circulating fan, fan motor, overheat protector, boil-dry protector
DoorAuto-Locking Mechanism|Bank Vault
Test AreaSpecimen shelves, shelf brackets for test area: Each×2
Control PanelTemperature, humidity, time displays, power ON/OFF key, setting keys, process lamps, alarm lamps, door lock/ release key
Water Supply SystemAutomatic water supply (Water supplied only at test start) Water supplied per start
Water Supply Amount1 Liter1.5 Liters1 Liter
OtherExhaust valve, air supply valve, deain filter, drain valve, air injection pump, water supply pump, water supply valve
ComponentsTemperature and humidity controller, Specimen signal terminals, Communication function (RS-485), Power cable
Pressure GaugeScale: -0.1 to 0.4MPa (Gauge)Scale: -0.1 to 1MPa (Gauge)
Loading Capacity18L18L×246L46L×218L18L×2
Test Area Dimensions(mm)W255×H255×L318|W10×H10×L12.5 inchW355×H355×L426|W14×H14×L16.8 inchW255×H255×L318|W10×H10×L12.5 inch
Outer Dimensions (mm)W640×H1483×D850
(W25.2×H58.9×L33.5 inch)
W760×H1795×D1000
(W29.9×H70.7×L39.4 inch)
W740×H1553×D1000
(W29.1×H61.1×L39.4 inch)
W860×H1795×D1000
(W33.9×H70.7×L39.4 inch)
W640×H1483×D850
(W25.2×H58.4×L33.5 inch)
W760×H1795×D1000
(W29.9×H70.7×L39.4 inch)
Gross WeightApprox 190kgApprox 350kgApprox 230kgApprox 390kgApprox 190kgApprox 350kg
Transport Space (mm)W690×H1540
(W25.2×H21.3 inch)
W810×H1850
(W31.9×H72.8 inch)
W790×H1610
(W31.1×H63.4 inch)
W910×H1850
(W35.8×H72.8 inch)
W690×H1540
(W25.2×H21.3 inch)
W810×H1850
(W31.9×H72.8 inch)

Use ESEPC hast chamber for highly accelerated life test, It can improve the test efficiency and reduce test time. By increasing environmental stress (e.g., temperature) and working stress (voltage applied to the product, load, etc.) Accelerate the test process, Shorten the life test time of product, The performance and reliability of the test samples are determined by this method. If you have a similar test requirement, Please inquiry to us !

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