Walk-in Plant Growth Chamber & Plant Growth Test Chamber Manufacturers India

Advanced Walk-In Plant Growth Chambers for Reliable Testing

Plants, unlike most experimental subjects, have opinions. They respond to the temperature when you weren’t watching. They reach toward light that shifted slightly. They stall in humidity that drifted. A controlled plant experiment is only as good as the environment holding it steady, and that environment is only as good as the chamber creating it. At ACMAS Technologies Pvt. Ltd. (WEIBER brand), we build walk-in plant growth chambers, plant growth chambers, and plant growth test chambers for scientists who cannot afford to let the equipment be the variable. Every unit we make is built to disappear into the background of your experiment, reliable, stable, and exactly where you set it.

What Is a Walk-in Plant Growth Chamber, and Why Scale Changes Everything?

A walk-in plant growth chamber is a room-sized controlled environment unit that researchers can physically enter to tend to, observe, and harvest plant specimens inside. Unlike bench-top growth cabinets, a walk-in unit accommodates full-height plants, large-format trays, multiple simultaneous experiments, and the kind of specimen volume that meaningful agricultural research and commercial plant production actually require.

Temperature, humidity, light intensity, and photoperiod are controlled with laboratory precision, but the scale is field-like. This combination is what makes a walk-in plant growth chamber irreplaceable for crop research, plant genetics, disease resistance studies, tissue culture programmes, and controlled environment agriculture (CEA) research. If your work demands that you be inside the environment alongside your plants, a walk-in is not optional, it is fundamental.

Plant Growth Chamber vs Plant Growth Test Chamber, What Is the Difference?

Buyers sometimes ask whether a plant growth chamber and a plant growth test chamber are different products. The short answer: no. Both describe the same controlled environment equipment.

Plant Growth Chamber: General research use, growing, observing, and studying plants under controlled conditions

Plant Growth Test Chamber: Formal testing, qualification, and experimental protocol use, same equipment, test-oriented framing

Walk-in Plant Growth Chamber: Large-format, room-entry configuration, operator can work inside; used for scale experiments

ACMAS-WEIBER chambers are designed to serve all three functions. Whether your institution calls it a plant growth chamber, a plant growth test chamber, or a walk-in plant growth chamber, we build it to your requirements.

Customised to Your Exact Specifications, Built for Your Science, Not a Catalogue

No two research programmes are identical. A crop scientist studying drought tolerance needs different conditions from a marine biologist maintaining seaweed cultures, who needs different conditions from a pharmaceutical team running plant-based compound extraction. That is why every walk-in plant growth chamber we build at ACMAS-WEIBER starts with your specification, not ours.

FEATURES
CONSTRUCTION DETAILS
GRAPHS INCLUDED
TECHNICAL SPECIFICATIONS
APPLICATIONS

HMI+PLC based controllers.
Colored touch screen panel.
2000 ltrs to 10,000 ltrs capacity
Programmable illumination control for upto 800 micro mol/cm2
Bulk data logging facility with data analysis software.
Open and close door updates through mobile network.
RS232/485 connectivity.
In built printer for printing graphs.
Incorporation of multiple devices such as process indicators, environmental scanners and temperature/humidity controllers.
Precisely designed airflow and lightning conditions.
Shelves according to requirement.
Air cooled refrigeration system (water cooled system optional).
Uniform upward airflow helps provide ideal plant growth conditions.
High/low temperature alarms.
Less use of electrical and mechanical components on the top and bottom of chamber - Provides easy maintenance of chamber, increases durability because of proper air circulation; cooling systems kept at bottom of the chamber to provide proper environment for compressor.
Circulation Fan with Variable Speed -
- Electrical efficiency
  Variable speed motor saves money by reducing energy bills, as it consumes less electricity than conventional motor.
- Cooling Efficiency
  Variable speed enables gaining air conditioning efficiency or SEER.
- Air Quality
  Variable speed motor helps clean the air efficiently. When the fan is in constant operation (indicated by the "Fan" setting on thermostat), the motor continues to slowly circulate air, allowing filters to capture more contaminants.
- Humidity Control
  Variable speed motor combined with a Thermostat allows controlling the amount of humidity.
- Quieter Operation
  Variable speed blower motor are significantly quieter thanits single-speed counterpart.
Air Cooled Refrigerated System - Air cooled refrigeration system offer various benefits like
- low fan power consumption
- resistant to corrosion and freezing conditions
- requires very low maintenance
- Guaranteed long life operation
PCRC Sheet Body - Powder coated steel body assures corrosion resistant chamber and allows working of chamber at high temperature applications.
Digital Output – Target and Performance Output of the chamber operations are in digital format(digits) giving precise reading.
Pre - Attached Data Logger with Data Analysis Software - Primary benefits of using data loggers is to automatically collect data 24-hour basis.Graph and table format of results can be produced automatically by the data logging software.
Open and Close Updates Through Mobile Network - Mobile technology has the potential to make services more flexible and keep informed, information anywhere at any time from mobile device, and can set alert system to know whether or not the chamber is being used.
Reliable – Construction, performance mechanism, controls and information system integration makes the equipment reliable.
Precise Control of Environmental Parameters - The set/ programmable parameters of the chamber are precise or have less deviation from original value,thus ensuring correct measurement.
Micro - Processor Based Controller – Microprocessor based controller enablesprecise control of temperature, humidity, pressure and other values. Benefits:
- Processing speed is high
- Provides flexibility to alter the system by changing software.
- Compact in size.
- Operation and maintenance easier.
- Maintain precise values
Aesthetically Designed - Designed according to the standards and principles underlining industry’s aesthetic values.
Corrosion Resistant Interior and Exteriors - Corrosion resistant coatings like epoy coatings are applied inside and outside the chamber to prevent against degradation due to moisture, salt spray, oxidation or exposure to a variety of environmental or industrial chemicals/ corrosive agents.
Energy Efficient – WEIBER chamber uses less energy to provide the same level of performance, comfort and convenience, thus making it energy conserving chamber.
CFC - Free Cooling - The air cooled refrigerator use CFC (chlorofluorocarbon)-free refrigerants those are ozone friendly and eco-friendly.
Sturdy Construction - WEIBER chambers are built with robustness to withstand stress and strain, giving the chamber long life and ability to perform in extreme stress environments.
Low Maintenance - WEIBER systems benefit inretaining proper functionality over long period of time.
Light Weight: Compact and superior materials ensure the chamber be light weight.

Lighting in a Plant Growth Test Chamber, Why It Matters as Much as Temperature

Most buyers compare plant growth test chambers on temperature range and humidity accuracy, and overlook lighting. This is a mistake that costs plant scientists months of compromised data. Light intensity (measured in µmol/m²/s or PPFD) and light quality (spectrum) are the primary drivers of photosynthesis, flowering, fruiting, and photoperiodic responses in plants. A chamber with inadequate or non-uniform lighting does not simulate daylight, it simulates a dimly lit room.

WEIBER plant growth test chambers are fitted with high-efficiency fluorescent light panels calibrated for up to 800 µmol/m²/s at canopy level, with programmable photoperiod control for precise day/night cycle simulation. The side-mounted panel design delivers uniform PPFD across the shelf area without the heat loading of overhead fixtures. For research requiring specific spectral outputs, far-red for photoperiod manipulation, blue for vegetative growth, UV for stress response studies, custom light configurations are available on request.

HMI+ PLC IN ONE UNIT:

Weiber provides better automatic controls for the chamber by integrating HMI and PLC together. This special feature is compelling alternative to traditional methods and provides a simplified, reduced cost control system architecture.
It works by following operating steps:

Sensors measure the physical quantity like temperature and convert them to electrical signal
The actuation device acts upon that electrical signal
At HMI interface between operator and chamber occurs.
The machine operates with the logic design controls controlled by software.
This signal is sent to the chamber by logic control devices and the chamber operates.

Basic features of HMI+PLC:

Processor of 1.6 GHz: High clock speed processing PLC that enables speed up processing to the functions. With 1.6GHz processing speed, the PLC system is capable of multitasking, processing of large data volume, and high performance.
Audio Output Alarm: Audio alarm alertin case of failures in any of the component controlling functions.
256 MB of RAM: PLC of 256 Mega Byte memory for running programmes offers high memory space for installing of more programs
COM Port: Com port provided for attaching RS 235/RS 485 cable.

USB Ports: A USB port provided for transferring data through communication between HMI and PLC. Various peripherals can be connected via USB hub.
Coloured Touch Panel: We provide coloured touch panel screen available in 2 sizes -7 inches and 10inches, displaying all the control features, digital clock, sensor layouts, data and values, graphics and pictures, navigations etc.
RS232 or RS485 Interface: Serial interface provided to get connectivity with internet, mobile and other data transmission. Single device to device interface and a communication bus that is used to form simple networks of multiple devices are available through RS485 interface. RS485 interface supports transmission speed of 2400, 4800, 9600, 19200, 38400 bits per second.
Through Ethernet communication module, AC Drives, temperature controller and other industrial automation products can be connected quickly.
Touch Screen Size of 7 Inches and 10 Inches: HMI screen available in 2 sizes- 7inches and 10inches, as per user’s requirement. Screen displays the control features, images, data values and other programs.
Expandable Memory with a SD Card: SD card plugged in appropriate slot for more memory requirement that will be read and used as part of device; for long storage requirements SD card may be added and store data with expanded memory.

High Resolution Brilliant TFT Displays, 64k Colours: HMI screen displays 64000 different colours with good resolution, allowing large number of distinguished colours, easy to establish and work with. It shows entire new 2D drawing technique, the screen resolution enhanced for more realistic images and more colourful and vivid displays.

Software Supports All Six IEC 61131 Programming Languages: Software supports all the six programming languages under international standard IEC 61131: Function Block Diagram, Ladder Diagram, Structured Text, Sequential Function Chart, Instruction List, and Continuous Function Chart.
E-remote Control Software: E-remote enables viewing the monitor and same screen shown on HMI at the production site, and control the manufacturing process via Ethernet.

e remote control software seed chamber suppliers

A set of Trouble Shooting Tools: 3 troubleshooting tools provided with in the software
Simulation- Imitation of a situation as real situation
Debugging- Finding and reducing number of defects.
Online changes- Like change of IP address can be made online. Manual to operate the programs on request.

Increased Numbers of On - Board I/O peripherals (10-50): Maximum number of 50 I/O peripherals provided on request, to attach input and output devices to the HMI and PLC. Increased number of input and output peripherals allows adding of devices like printers, recorders, etc.,as per the need.
Data Logging and Free Programming Software: Attached data logger with input program software provided. Through data logging software, HMI and PLC collect datathrough sensors, analyse the data and save and output the results of the collection and analysis. Examples of the types of information a data logging system can collect include temperatures, sound frequencies, vibrations, times, light intensities, electrical currents, pressure and changes in states of matter.

CoDeSys (Controller Development System) software technology

controller development system screenshot seed chamber exporters

controller development system screenshot b seed chamber

Heating:
Indirect heating system is provided in our units, comprising of air heaters made of high grade Kanthal A-1 wires of suitable wattage. The warm air is evenly distributed throughout the chamber through efficient motor fans ensuring very good temperature sensitivity.

Cooling:
An energy efficient cooling unit is installed in our photostabilitytest chambers to enable studies at lower room temperatures. We use high end CFC free compressors of Kirloskar/Tecumseh / Bitzer/ Denfos make, conforming to latest international standards and guidelines.

DETAILED DESCRIPTION ALONG WITH SALIENT FEATURES ARE AS UNDER FOR REFRIGERATION MACHINE

CONDENSING UNIT

AIR-COOLED CONDENSOR

Air-cooled condenser is internally grooved finned copper tubes used for high heat transfer area, which not only reduce power consumption, but also bring down the condensation faster. This unit is designed. &verdigris& reduces the resistance, saves energy consumption and ensure good heat exchange.

COMPRESSOR:

HERMETIC COMPRESSOR
Single stage Reciprocating Compressor. Give the High Efficiency compared to sealed compressors, Less Power Consumption , Accessible for repairing, low noise level, Less Vibrations, Wide Voltage Range, Designed for Extremely High Ambient ,Full warranty etc
COOLING SYSTEM
The compressor is mounted perfectly to ensure recommended level of sound and vibration.

REFRIGERATION CONTROL

Low and High Pressure switch of RANCO/Danfoss

Which ensures the compressor and refrigeration system when low pressure will occurs it trip off the compressor. This is the only operator friendly switch can easily reset.
Hand Shut off Valve
Is the only Condensing Unit, which is equipped with it. This valve is used for pump down the total gas in to the condenser & receiver in the faulty condition.
Liquid Dryer of Danfoss make
Which is equipped in the liquid line for ministration of moisture in the liquid. It will collect all the moisture in side the refrigeration line as well as gas.
Moisture Indicator of Danfoss make
The sight glass area in the Moisture Indicator shows at a glance the condition of the refrigerant system. The moisture indicator element changes colour and indicate if the system is safely dry, or dangerously wet.
Solenoid Valve of Castle make
In most refrigeration applications, in order to automatically control the flow of fluids in a system, it is necessary to be able to start or stop the flow in the refrigerant circuit. An electrically operated solenoid valve is usually used for this purpose. Its basic function is the same as a manually operated shutoff valve, but it can be positioned in remote locations, and may be conveniently controlled by simple electrical switches.
Oil Separator

The oil separator intercepts the oil mixed with compressed gas and returns it into the crankcase of the compressor, thus assuring an efficient lubrication of its moving parts. Also, it improves the overall efficiency in the system.
Suction Accumulator
Maximum Efficiency of the relief device (expansion valve) because it is supplied with sub cooled Liquid.
Liquid Receiver
As per ASME Section VIII Division I for storage of refrigerant.

Humidity Range
20% to 85%RH

Humidification (WATER TANK AND AEROSOL SYSTEM)

A low-pressure droplet free vapour boiler using direct vaporization system is used. Water Reservoir is provided at the side of the chamber with a 10 x 8mm PU tube quick connector and water level is automatically controlled through a water-in solenoid valve. The wick tank water level is automatically maintained through a water solenoid valve and an electrical float switch. The de-mineralized water or single distilled water supply to the humidity inlet having a resistance measurement of approximately 50,000 – 200,000 Ohm/cm is provided with the unit.

Aerosol Generator and Monitor is a multi-function aerosol instrument comprised of an atomizer aerosol generator. As an aerosol generator can be used to generate a monodisperse aerosol by atomization. The output aerosol concentration is continuously monitored by control facility to provide a stable aerosol output with a known particle size and a known aerosol concentration from 10nm to1000nm.

vapourization system seed storage chambers

Dehumidification: Refrigeration based de-humidification system is used. The desired level of lower humidity will be achieved by maintaining the precise dew point temperature. If you need more low humidity than the standard range then refrigeration based dehumidification system can be incorporated on customer’s request.
Humidity Sensitivity: Humidity is controlled by mean of an electronic humidity controller cum indicator with an accuracy of ±3%RH
Temperature Control: The temperature inside our plant growth chambers is controlled through Nano technology based HMI & PLC controller.
Temperature Range: Temperature range of our plant growth chambers is -2^o C to + 70^o C. . However we have the capacity to modify the same to suit the individual specialized requirements of our customers.
Temperature Sensitivity: Temperature inside our plant growth chambers are controlled with a sensitivity of + 0.5^o C or better.
Illumination: Our plant growth test chambers are provided with door operated illumination system comprising of fluorescent lights, beside two panels of diffused fluorescent light panel located at the either side of the chamber to enable the user to conduct the photo periodic tests and experiments.
Insulation: The gap of 75 mm between the outer and the inner wall is filled with special grade glass wool to prevent thermal losses.
Mineral Glass Wool Insulation: Glass mineral wool is one of the most environmentally friendly, stable and sustainable insulates available. Glass wool is incombustible by nature. Euro class classification is A. It does not propagate flames and toxic smokes. Thanks to a dense entanglement of materials with a low conduction and trapping a great amount of air, glass wool is an excellent thermal insulant. The thickest it is, the best thermal resistance it has, thus reducing heat losses in our equipment’s for better sensitivity and economical operations. And its impact on the environment in manufacture, use and disposal is minimal.
Air Circulation: Triple walled back of unit is fitted with two air circulation fans for maintaining temperature uniformly throughout the chamber

Features of Coaxial Circulation Fan:

Vacuum impregnated stator winding with dr. back varnish under red baktol
Non-hygroscopic.
Best IR value
Bright bar (EN - 8 class) shaft.
Bush bearing of branded companies.
Surge comparison testing in fans and pumps eliminates into turn short circulating of the stator.
Pressure die-casted-rotor manufactured with zero error.
Boats of high accuracy

Basic Temperature Humidity Graph

WORKING SIZES (WXDXH)

Volume (Lt.)	External dimensions (WXDXH)mm
4200 Lt	179021002305
8100 Lt	274021002305
12500 Lt	379021002305

Customizable sizes are also available.

Temperature Range Lights Off	--2 ^oC to 70^oC, adjustable
Temperature Range Lights On	5^oC to 70^oC, adjustable
Temperature Accuracy	±0.5 ^o C
Ramp up Rate	+/- 1^°C/min
Cool down Rate	+/- 1^°C/min
Humidity Range	20-85 %RH
Humidity Accuracy	±3%RH
Temperature Sensor	Pt-100
Controller	HMI+PLC
Power requirements	230V, 50 Hz
Options	CO₂ control

Applications, Who Uses Our Plant Growth Chambers?

Our walk-in plant growth chambers and plant growth test chambers are deployed across a wide range of scientific disciplines and commercial applications:

Application	What the Chamber Supports
Crop Science & Agronomy	Controlled growth studies for yield, disease resistance, and climate stress response in crop species
Plant Genetics & Breeding	Phenotypic observation and crossing experiments under defined photoperiod and temperature conditions
Controlled Environment Agriculture	Research into vertical farming, hydroponics, and indoor growing system optimisation
Marine Biology	Algae and seaweed culture maintenance requiring specific temperature-light-CO2 combinations
Plant Pathology	Disease inoculation and progression studies under controlled humidity and temperature
Forestry & Conservation	Native species germination, seedling establishment, and propagation for reforestation
Pharmaceutical & Biotech	Plant-based compound production, enzyme studies, and medicinal plant cultivation
Climate Change Research	Simulating elevated temperature and CO2 scenarios to study plant adaptation responses

Why Research Scientists and Institutions Choose ACMAS-WEIBER

Lab managers and procurement officers evaluating plant growth chamber manufacturers are looking for one thing above everything else: a unit that holds its set points, day after day, without surprises. Here is what ACMAS–WEIBER delivers:

HMI+PLC integrated controller, single unified interface for temperature, humidity, and lighting; eliminates multiple separate control units and the errors that come with them
Programmable illumination up to 800 µmol/m²/s with photoperiod control, covers the full range of plant light requirements from low-light species to high-demand crops
Variable-speed circulation fans for uniform temperature and humidity distribution across the full chamber volume, not just near the sensor
Pre-attached data logger with analysis software, automatic 24-hour data capture, graphed and publication-ready
Remote mobile alerts, door open/close and parameter alarms sent to your phone; no need to check manually
CFC-free compressors (Kirloskar, Tecumseh, Bitzer, Danfoss), ISI marked, environmentally compliant
Optional CO2 control, for elevated CO2 plant growth studies and climate change research
CE and ISO certified, documentation your institution's procurement system accepts without queries

Our plant growth chambers are installed at ICAR institutes, State Agricultural Universities, DRDO laboratories, botanical gardens, biotechnology companies, and pharmaceutical plant research units across India and internationally.

Walk-in Plant Growth Chamber Suppliers & Exporters, India and Worldwide

As established walk-in plant growth chamber and plant growth test chamber manufacturers, ACMAS–WEIBER supplies research institutions, botanical gardens, universities, biotechnology companies, and government laboratories across India and internationally, including the Middle East, Africa, Southeast Asia, Australia, Europe, and the United States.

In India, our plant growth chambers are installed at ICAR institutes, State Agricultural Universities, national botanical research organisations, DRDO research establishments, and leading private biotechnology and pharmaceutical companies. For international orders: CE-certified equipment, export-compliant packaging, multilingual technical documentation, and remote commissioning support.

Whether you need a standard unit or a fully customised walk-in plant growth chamber engineered to your exact research protocol, our technical team welcomes a direct conversation. No catalogue pressure, no standard configurations pushed as solutions. Just honest engineering discussion about what your plants actually need.

Frequently Asked Questions

Q: What is a walk-in plant growth chamber?

A: A walk-in plant growth chamber is a large-format room-sized controlled environment unit that allows researchers to physically enter and work with plants inside. It provides precise control over temperature, humidity, light intensity, and photoperiod for large-scale plant research, crop studies, and breeding programmes.

Q: What is the difference between a plant growth chamber and a plant growth test chamber?

A: Both terms describe the same equipment. A plant growth chamber is the general term for research use. A plant growth test chamber emphasises its use in formal experimental or qualification testing. ACMAS–WEIBER chambers serve both purposes.

Q: What temperature and humidity range does your walk-in plant growth chamber support?

A: -2°C to 70°C (lights off), 5°C to 70°C (lights on), accuracy ±0.5°C. Humidity: 20% to 85% RH, accuracy ±3% RH. Custom ranges available on request.

Q: What light intensity do your plant growth test chambers support?

A: Standard programmable illumination up to 800 µmol/m²/s (PPFD) with photoperiod control. Custom light intensities and spectra (red, far-red, blue, UV) available on request. Optional CO2 control also available.

Q: Can plant growth chambers be customised to my specifications?

A: Yes, this is a core ACMAS–WEIBER capability. We customise temperature range, humidity profile, light intensity and spectrum, photoperiod programme, CO2 control, chamber dimensions, shelf configuration, and data connectivity. Share your requirements and we will design and quote within 5 working days.

Q: What sizes are available for walk-in plant growth chambers?

A: Standard: 4200L (1790×2100×2305mm), 8100L (2740×2100×2305mm), 12500L (3790×2100×2305mm). Custom: 2000L to 10000L+ on request.

Q: Do you export walk-in plant growth chambers outside India?

A: Yes. We export to the Middle East, Africa, Southeast Asia, Australia, Europe, and the United States. CE-certified equipment with export-compliant packaging, multilingual documentation, and remote installation support.

Walk-in Plant Growth Chamber, Plant Growth Chamber & Plant Growth Test Chamber

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