Humidity Steady State Test Chamber

Home > Humidity Steady State Test Chamber



The Chamber is used to carry out Humidity Steady State Tests  at any temperature and humidity within specified limit. It meets almost all National and International Standards.

Temperature, Humidity & Dew Point Temperature (DPT) Ranges:

  • For Humidity Testing

  • General Testing (A)
  • Temperature: 200 to 800 C
  • Relative Humidity: 15% to 98% Rh
  • DPT: 200 to 650 C
  • Low Temp-Low %Rh and High Temp-High %Rh (B)
  • Temperature: 150 to 850 C
  • Relative Humidity: 15% to 98% Rh
  • DPT: 150 C to 800 C
  • See chamber T-%Rh performance chart

Temperature – %Rh covered under plot “A” take cares of all tests specified in IS 9000, JSS 55555 and MIL-STD-810 standards. Don’t increase cost of equipment by selecting plot “B”.


Final Model

Work Space

(H x W x D)

Static Load

of Steel

Thermal loadNo. of Selves
ENV-031-125 Liter – A OR B50 x 50 x 50 cm10 Kg20 watts1
ENV-031-450 Liter – A OR B75 x 75 x 80 cm25 Kg50 watts2
ENV-031-1000 Liter – A OR B100 x 100 x 100 cm50 Kg100 watts2
*ENV-031-CB – A OR BCustom Built (Specify H x W x D)SpecifySpecifyNot required

* We have delivered Hot, Cold & Humidity Chamber up to 10 x 4.5 x 3.5 meter size.

Standard Features:

  • Single stage refrigeration system is used.
  • Sealed refrigeration compressor will be use.
  • Humidity Generation: Using low pressure steam generation
  • Dehumidification System: Using refrigeration system
  • Temperature sensing by Pt-100 sensor
  • % Rh sensing by capacitive RH sensor
  • Control accuracy: Better than +/- 0.5° C and +/-2% Rh (+/-10 C and +/-3% RH for Walk In Chambers)
  • Selves are provided which can be adjustable throughout height
  • Standard Port Holes: 50 mm / 100 mm / 150 mm diameter (Specify)
  • Multilayer observation window with illumination
  • Caster wheel up to 1000 Liter models
  • Ambient condition: 10° to 45° C

Control Instrumentation Options (Select):

  • Multispan or equivalent controller will be used

Optional Accessories:

  • Two channel Paperless chart recorder
  • Two channel data logger

Major Safety Protection:

  • Independent workspace over & under temperature protection
  • High discharge and low suction pressure correction before tripping
  • Refrigeration compressor tripping abnormal high discharge and low suction pressure
  • Low water level protection in humidity generation system
  • Over current Relay (OLR) and MCBs as required

Power Supply:

  • 415 Volt – 50 Hz – 3Φ – N – E
  • 230 Volt – 50 Hz -1Φ – E

Provide Minimum Information While Rising Inquiry to Get Precise Quotation:

  • Select final model number from Table 1.
  • Please give Chamber size (Width x Depth x Height) and thermal load in case of Model: ENV-021-CB
  • Numbers of port holes and size (Size is mentioned above)
  • Air cooled or water cooled condenser. (We will decide for water cooled condenser for large size chambers)
  • Optional accessories (Select from above)
  • Specify any additional facility if needed

Electric Supply Option:

  • 415 Volt – 50 Hz – 3Φ – N – E
  • 230 Volt – 50 Hz -1Φ- E

Cost Controlling Factors:
Many parameters like temperature range, workspace size, controllers, cooling rate etc. are affecting the cost. Therefore, be careful while providing such details to control cost of the chamber.

Some manufacturers are specifying 950 C / 95% Rh in conventional chamber. Total pressure for this condition is above 1.8 atm, for which strong structures is required. Moreover, active insulation is also required to avoid surface condensation. According best of our knowledge, control sensors are kept in supply duct and are not correct workspace condition.

Please note that we make high temperature (even above 1000 C) / high humidity chambers with taking all precautions. See technical details of HAST Chamber.

Print Friendly, PDF & Email