walk in environment testing room

1

temperature range  

+20 °c to +80 °c

2

humidity range

40% to 85% rh

3

temperaure fluctuation

+/-2°c

4

humidity fluctuation

+/-3%r.h

5

dimension (internal) (h x w x d)

400 x 300 x 300cm

6

dimension (external) (h x w x d)

550 x 340 x 340cm

7

rate of cooling

1c /min in average, without load

8

rate of heating

1c /min in average, without load

9

interior walls

stainless steel 304

10

exterior walls

steell plate with paint spray

11

temperature measurement and controller

32 bit control and monitoring system.

interface facility with rs232 / usb

temi 880 plc 

12

viewing window

multi pane glass window size – 250 mm x 380 mm

13

port holes

50 mm diameter for wire routing

14

power  supply  requirement  

three phase, ac380 v ± 10 %, 50 hz

15

sound pressure level

< 72db (a)

16

condenser cooling

air cooled

17

general technical specification

18

thermal cyclic chamber

18.1

chamber with internal air circulation, and all the heaters and cooling coil located behind/below the false sheet of the chamber and outside the working space

18.2

chamber provided with castor wheels for easy mobility  

19

interior

19.1

test space welded vapour tight with rounded edges

19.2

the conditioning with air circulation to maintain uniform temperatur

19.3

interior have provision for arranging stainless steel  

20

insulation

20.1

insulation is asbestos-free csc-free, with low thermal conductivity, polyrthene pu foam

21

cooling system

21.1

cascade type, refrigeration system with hermetically sealed refrigeration

cycles with environment and ozone friendly and chloride free refrigeration

22

door

22.1

lockable front opening, with double door latch easy to open

22.

with silicon gasket for perfect sealing

23

viewing window

23.1

viewing interlock is sealed to avoid leakage and provided with heating provision to prevent condensation

24

illumination

25.1

inernallight on viewing windows with external control

26

temperature measuring and control system

26.1

the temperature measuring and control system adopts microprocessor system and provided with touch panel for monitoring and digital display:

supplied with support software

software is capable to visualize and graphical anallyse the measured & recorded value.

A.

graphical representation and digital display and control of set and actual values

B.

digital input and display of temperature in degree centigrade

C.

with automatic and manual operation  

D.

fault diagnosis system

E.

120 stroage of programmes

26.2

have adjustable safety cut-out against high and low temperature

26.3

facility to programme temperature measuring using sensor pt100

27

recorder & pc connectivity

27.1

standard rs -232 interface for pc connectivity

27.2

rs-232 cable for pc connectivity along with pc connectivity software

28

port holes

28.1

each portholes provided with silicon sealing bunker (plug)

29

electrical panel

29.1

all power connectors, protection devices power control logic built in the control panel integrated to the chamber

29.2

all electrical cables tagged with id number

29.3

all electrical function circuit equipped with its own safety device that shuts down the relevant circuit or the entire test chamber if a faulty develops

29.4

all electrical systems comply with recognized technical regulation as well as with the accident prevention regulations.

30

standard protection

30.1

protective feature to be provided as follows:

A.

over load trip & earth leakage trip for complete chamber

B.

mcb’s for compressors, heaters and motors

C.

over load trip for compressors, heaters and motors

D.

over temperature cut-off for compressors

E.

high pressure and low pressure trip for compressors

F.

heater be cut off, if air circulation blowers are off

31

operating system

31.1

detailed operating & maintanance manual supplied in hard copy and soft copy (cd) also

31.2

the manuals include the following:

A.

installation details

B.

operational instruction

C.

complete list parts

D.

preventive maintenance procedure

E.

trouble shooting measures

F.

electrical circuit diagrams

G.

refrigeration system details with circuit diagram

H.

details technical specification of all the items like compressors, heaters ,pumps,condensers, and valves etc.