Kesar Control Systems
Humidity chamber
Introduction
A Humidity Chamber is a device used to artificially replicate various environmental conditions by procedurally altering just two specific factors. Temperature and relative humidity. A Humidity Chamber is thus used comprehensively in the testing of drugs & medicines in the various pharmaceutical industries, to determine the basic shelf-life of the said drugs & Products along with their resistance to environmental changes. The Humidity Chamber can be classified into environmental chambers, temperature – humidity chambers, accelerated test chambers, and photo Humidity Chambers and cold chambers, depending on the respective parameter of testing.
Construction
- Constructed and fabricated on fully automatic CNC machines.
- Insulated Chamber interior made of High Grade stainless steel with mirror/dull finish.
- Exteriors with model options of Stainless steel and G.I. Powder Coating.
- Illuminated Interior with full-view glass door.
- Heavy-duty door hinges & latches to maintain a secure & uniform seal and durability.
- Adjustable stainless steel shelves provide flexibility for different sample sizes.
Technical Specification
| Temperature Range | 20 ℃ to 60 ℃ |
|---|---|
| Humidity Range | 40%RH to 95%RH |
| Accuracy | ±0.2 ℃ & ±2.0% RH |
| Uniformity | ±2.0 ℃ & ±3.0% RH |
| Test Suitable For | 25 ℃ & 60% RH, 30 ℃ & 65% RH 40 ℃ & 75% RH, 30 ℃ & 75% RH |
| Specially designed chambers for Low Humidity conditions such as 25 ℃ 40% RH, 40 ℃ 25% RH, 30 ℃ 35% RH | |
| Control System | PLC or PID Based |
Material of Construction
| Models | Material Of Construction | |
|---|---|---|
| Interior | Exterior | |
| STD | S.S.304 Dull Finish | G.I Powder Coated |
| GMP | S.S.304 Dull Finish | S.S.304 Dull Finish |
| CGMP | S.S.316 Dull Finish | S.S.304 Dull Finish |
Sizes
| Models | Capacity (in ltrs.) | Dimensions (W X D X H) | Max No. of Trays | |
|---|---|---|---|---|
| Internal Width X Depth X Height (mm) |
External Width X Depth X Height (mm) |
|||
| KGOS-90 | 90 LTR | 450 X 450 X 450 | 600 X 1030 X 1060 | 2 |
| KGOS-227 | 227 LTR | 600 X 630 X 600 | 750 X 1210 X 1210 | 2 |
| KGOS-325 | 325 LTR | 600 X 630 X 900 | 750 X 1210 X 1510 | 5 |
| KGOS-400 | 400 LTR | 600 X 630 X 1060 | 750 X 1210 X 1670 | 6 |
| KGOS-500 | 500 LTR | 600 X 630 X 1330 | 750 X 1210 X 1940 | 8 |
| KGOS-600 | 600 LTR | 800 X 800 X 950 | 950 X 1380 X 1560 | 5 |
| KGOS-800 | 800 LTR | 800 X 800 X 1250 | 950 X 1380 X 1860 | 7 |
| KGOS-1000 | 1000 LTR | 800 X 800 X 1570 | 950 X 1380 X 2180 | 10 |
Other Details
Specifications
A Humidity Chamber is a precision testing equipment that works under very tight tolerances. Temperature and relative variations within the chamber shouldn't deviate more than 2 to 3 degree Celsius and 2% to 3% respectively.
Full View Glass Door
A multi-pane viewing door prevents condensation & allows product view. Inner & outer doors are sealed around the entire perimeter by a silicone rubber gasket.
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Features
- Heavy duty stainless steel construction
- Illuminated interior.
- Multi-pane viewing door prevents condensation to ensure a proper view.
- Heavy-duty solid stainless steel duly electro polished perforated type trays which are easy to clean and adjustable.
Optional Features
- Stand-by humidity system.
- Stand-by refrigeration system.
- Scanner.
- GSM Alert System.
- Security Alarm System.
- Microprocessor based PID controller with auto tuning for accurate control of temperature and humidity conditions.
- Rotronic make 4-20mA sensors for better accuracy/ Pt100 Sensor for Temperature & Direct % RH electronic capacitor type humidity.
- Data Storage unit facility to store data and to print directly on printer or transfer to software with Date, Time, SV, PV, Door Open/ Close, Power On/Off remarks.
- Safety: Temperature & Humidity High / Low Alarm, Temperature very High / Low cut off, Water level low cut off.
- 7″ HMI with TFT LCD Colour touch screen with password protection for all parameter actual status monitoring of utilities like Sensor, Heating & Cooling System, and Humidity System.
- Rotronic make 4-20mA sensors for better accuracy.
- PLC with auto tuning facility for accurate control of temperature and humidity conditions.
- PLC system for an auto changeover of standby systems.
- Data Storage unit facility to transfer the data to software via Ethernet for web based online remote monitoring with Date, Time, SV, PV, Door Open/ Close, Power On/Off remarks. Also transfer the data through USB.
- Safety/Alert: Temperature & Humidity High / Low alarm, Temperature & Humidity High / Low cut off, Low water level cut off, Auto change over for standby systems
Safety Features
- Password protected door access.
- Temperature deviation & RH deviation alarm.
- Power Failure Alarm.
- Continues open door alarm.
- Extreme temperature & RH prevention cut-off system.
- Low water level cut off
- Auto change over Facility for RH Generator & Cooling System
- Door hinges and latches are durable and of high quality to ensure a perfectly uniform seal in the long term.
- Inner and outer doors are completely sealed by silicone rubber gaskets for maximum efficacy.
Software (21 CFR Part-11 Compliance)
Log data, Event data, Audit, Trail data, E-Records & E- signatures, Graphical analysis & Data acquisition.
Trays
Heavy duty solid stainless steel duly electro polished wire mesh type trays are provide which are easy to clean, time & efforts saving, also adjustable for convenience.
FAQ'S
A humidity chamber is environmental testing equipment that holds a set temperature and relative humidity to evaluate how a product, material, or packaging responds to moisture exposure over time. It's used in pharmaceuticals, cosmetics, electronics, and packaging testing to assess degradation, corrosion, and shelf-life resistance under controlled humidity conditions.
A humidity chamber and a stability chamber use the same core temperature/humidity control technology and specifications, but a stability chamber is specifically validated and documented for long-term ICH Q1A(R2) pharmaceutical shelf-life studies, while a humidity chamber is commonly used for shorter conditioning, packaging-integrity, and material-resistance tests that don't require multi-year regulatory data.
Confirm the temperature and RH accuracy match your test protocol's tolerance requirements (typically ±0.2°C / ±2% RH for pharma), stainless steel interior construction, a condensation-free viewing door, availability of 21 CFR Part 11 compliant data logging if you're submitting to a regulator, and whether the manufacturer offers low-humidity configurations if you're testing hygroscopic products.
Kesar Control's humidity chamber operates from 20°C to 60°C and 40% to 95% RH, with ±0.2°C temperature accuracy and ±2.0% RH humidity accuracy, and supports standard test points (25°C/60% RH, 30°C/65% RH, 40°C/75% RH) as well as specialized low-humidity conditions.
The humidity chamber is available from 90 litres up to 1,000 litres across the KGOS series (KGOS-90 through KGOS-1000), with tray capacity from 2 to 10 trays depending on model, and can be built in STD, GMP, or cGMP material configurations.
The PID-based humidity chamber uses a microprocessor controller with auto-tuning for standalone operation. The PLC-based option adds a 7" HMI touchscreen, Ethernet-based remote monitoring, automatic changeover for standby humidity and cooling systems, and USB data export, better suited to facilities monitoring multiple chambers centrally.
Yes, when configured with the optional 21 CFR Part 11 compliant software, which logs event data, audit trails, and supports electronic records and signatures required for CDSCO, USFDA, and other regulatory submissions.
The chamber includes temperature and RH deviation alarms, power failure alarms with timestamped logging, a continuous open-door alarm, extreme temperature/RH cut-off protection, low water level cut-off for the humidity generator, and automatic changeover for standby RH generator and cooling systems.
