Humidity Chamber

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These equipments are used for climatic & durability tests of electrical
& electronic components, corrosion test on mechanical assemblies,
materials for simulated tropical & extreme tropical conditions.


These Chambers are fabricated using double wall PUF insulated
modular panel, easy to transport, & installation at site. The
modular panels will be firmly locked together by Cam locks
which is sealed using the silicon sealant to prevent the
penetration of air. The ceiling shall be structurally rigid to hold
heavy load if any over the chamber. The floor shall be PUF
sheet of density 40 kg/m3 for resisting the load of Racks &
loaded trays. These Chambers are rested on heavy & strong
base having modular construction enabling the relocating of
chamber at new location as and when desired so.

Air Circulation

The humidity chamber is provided with best air circulation to give
better temperature uniformity this is achieved by using one set of
motor & blower in baffle wall compartment to push treated air in
working chamber. this system gives better than 1deg c.
temperature uniformity in working chamber, evaporator, heaters &
steam injection system is from back side, behind baffle wall, the
air circulation blower is also fitted in this compartment only. This
arrangement helps to mix steam and air together and pass well
mixed air inside the working chamber. Due to above system the
temperature and humidity (R.H.) in complete chamber almost


Heating & Humidification

Air Heaters are provided for heating above ambient temperatures.
Ultrasonic humidification system for the chamber.

Temp. Range

-40°C to +80°C
Temperature Fluctuation : + 0.20C, Temperature Gradient : + 10C
Humidity Range : 60% to 80% RH
Accuracy : + 1%R.H, Humidity Gradient : ~+ 2%
Heating Rate : Normal.
Cooling Rate : Normal.


Power Supply

3 Phase 440V AC, 50Hz.


Refrigeration system

Cooling :
By hermetically sealed Danfoss / Embruco / Bitzer
Make Compressors, for double stage compressor
cooling system & humidity control.
Cooling coil:
Copper cooling coil is sandwiched between the
“PUFF” insulation & the Outer side of Inner working
Chamber to transfer the cooling by conduction
process for ULTRA Low temperature range. A
separate finned cooling coil is fitted behind the baffle
wall below the blower fan for humidity control system.
Condensing Unit :
Heavy duty air cooled condensing unit with
condensing fan will be provided at bottom side of the
chamber. The complete assembly is fitted on base in
such a way that any component can be replaced very
R efrigerant :
CFC Free : 404A, 508B

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Programs : edit up to 100 PTNs (1000 steps per pattern) each
PTN can be executed 999 times, could store logs at an interval
from 1 to 60 seconds for 600 days (24 hr operation), logs
downloaded by USB port. PLC automatic calculation. Micro
computer multi function controller, main components data
automatically output including compressor, solenoids, heating
units etc. Errors of main components appear on the LCD panel.
Programs auto-save function if power cut off suddenly. Have
HOLD & ADV buttons in programs. Auto-matically set the high
& low temperature limits after programs set. Password set function.
Print the operation graph by connecting mini printer. factory
calibration of 230C / 50% RH & 950C / 50% RH. Time sequence
control interface relays have 3 groups which manage the output
of outside logic units including signal, mechanical & power etc.
Sensors : Direct RH% Rotronic Make Hygroclip sensor for Relative
Humidity which can withstand a temp. of 200C, PT-100 sensors.

Special Care

Please note that this equipment has to be operated with a
suitable rating Servo Controlled Voltage Stabilizer has to be
installed in case of voltage fluctuations.



Microprocessor based PID Temp. & RH controls.



ISO 9001:2015 Certified Co. D&B registered & CE mark
Calibration & validation certificates traceable to NABL / ERTL
accredited labs.


Safety Features

Supervisory Safety Monitoring System has been introduced for
additional Safety measures. Individual additional micro – controlled
is used for this supervisory system. If the temperature & humidity
value crosses set Hi & Low limits for either or both parameters,
safety control action will be taken over by this controller. If the
parameters sets within the limit value, main control action will
resume automatically.
1. ELCB, MCB for Compressor, Boiler heater, Air heater & Mains.
2.2 Min. Compressor ON delay time for safety of compressor.
3.Float switch to cutoff the main supply & audio visual alarms in
case of low water level.



To comply with the documentation requirements, we provide
IQ, OQ & PQ protocols to be executed before taking the
chamber in to for regular use, and support the supply with the
following documents with the detail operational and service
Standard Operating Procedure (SOP)
Operational Manual for Controller
IQ,PQ,OQ protocols certificate.
Calibration certificate of all controlling modules with traceability.
Certificate of MOC.
Test Report of chamber prior to supply with mapping certificate.
wiring diagram for ease of service maintenance.

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