A dehumidifier is a machine that removes excess moisture from the air. An industrial dehumidifier is built to be transported and used in several hard-wearing locations. Commercial and industrial dehumidifiers will reduce mold, condensation dripping from pipes or windows, and eliminate musty smells.

1. DEHUMIDIFIER MACHINE AUTOMATION WITH MESSUNG'S NX-ERA XPRESS
A dehumidifier is a machine that removes excess moisture from the air. An industrial
dehumidifier is built to be transported and used in several hard-wearing locations.
Commercial and industrial dehumidifiers will reduce mold, condensation dripping from pipes
or windows, and eliminate musty smells.
APPLICATIONS WHERE DEHUMIDIFIER MACHINESARE USED:
PHARMACEUTICAL
Moisture control is a great concern in the pharmaceutical industry from product
manufacturing to packaging, and from shipping to storage. Some applications for humidity
and moisture control in pharmaceuticals relate to microbiological considerations, while
many applications relate to processing in order to achieve correct moisture levels that will
facilitate the filling of capsules, tablet forming, and packaging.
For example, gelatin capsules are often monitored closely for moisture content to allow
them to be sufficiently supple for filling without cracking or breaking in the manufacturing
process. Effervescent powder manufacturers must maintain tight control of the plant's
humidity in order to avoid moisture regain in the powder.
AUTOMOTIVE
Dehumidifier machines allow the automotive industry to maintain temperature and
humidity, even to the most precise specifications and are used in a variety of applications.
Complete cars, engines and parts are subjected to a large degree of testing in environmental
chambers and wind tunnels. It enables automotive manufacturers to simulate any
environmental condition with dehumidification systems that can deliver dryair.
FOOD INDUSTRY
Use of dehumidifiers is able to create the best conditions to convey, cool, freeze, dry and
cure foods, right through to packing and storage. This guarantees consistent quality, cost
savings and increases throughput.
Exact regulation of temperature and humidity is necessary in the production of many foods.
The external climate may vary but, in the production process, the climate must be constant.
From production processes such as pasta cutting, conveying belts, tunnel freezers, blast
freezers, spiral freezers or cold stores, to sugar silos conditioning, product transportation

2. and storage, it is possible to achieve important cost savings, by simply mastering the relative
humidity of the air around us.
THE CUSTOMER
Our customer is a manufacturing company supplying Desiccant Dehumidification air
handlers in commercial and industrial markets. It is their mission to provide customers with
high quality, energy efficient products, while striving for correct application of products to
their customers' needs.
KEY FEATURES OF THEDEHUMIDIFIERMACHINE
➢ Maximized dehumidifier air flow capabilities with very high and consistent
performance levels
➢ PLC based control choice
➢ G4 grade filters on both air systems
➢ Robust industrial duty structural frame and panel design
➢ Highly compact design
➢ Reduced installation time on site
➢ Supply Fan with frequency control
THE SOLUTION
The dehumidifier control system based on a PLC, which comprises a programmable logic
controller, a transmitter, a signal input part, a contactor, anHMI and an extended
communication module. Control instructions can be obtained from a digital input terminal of
the PLC, the HMI or a top level computer. The system running state can be displayed on a
digital output terminal of the PLC and the HMI.
The acquired humidity and temperature signals are converted into usable frequency signals
and accessed to a PLC high-speed counting input terminal which performs timer counting for
obtaining a sampling value.
The HMI and the extended communication module facilitate the realization of local
monitoring and controlling as well as remote computer monitoring and controlling on the
dehumidifier control system.
The dehumidifier control system which has the advantages of low cost, convenient use,
flexible programming, high reliability, strong anti-interference performance, powerful
Human-machine interface functions as well as powerful communication functions is easy to
integrate in an on-site bus control system as an intelligent node.
Messung engineers studied the machine and its
requirements, and came up with a solution consisting of
• NX-ERA XPRESS XP325 PLC controller
• 4.3 inches HMI

3. THE BRAIN OF THE SYSTEM: NX-ERA XPRESS
NX-ERA Xpress is a powerful mini PLC(Programmable Logic Controller) developed by
Messung, leading micro PLC manufacturer - for entry-level applications. Packed with
advanced features, NX-ERA Xpress micro PLC delivers high-speed processing power in a
compact design with embedded I/O. The micro PLC system can be easily expanded through
CANopen using the Remote I/O Modules - a great advantage for OEMs with needs of small,
scalable applications.
Features of NX-ERA Xpress:
• High density I/O both Digital & Analog
• Programming by Codesys® - IEC 61131 based software
• Ethernet Port - TCP/IP, Modbus TCP/IP
• Inbuilt Webserver
• Industry 4.0 ready - OPC-UA, MQTT features
• RS-485 port with Modbus RTU Master protocol
• CANopen Master/Slave protocol
• SCADA and HMI interfaces available
• Built in HTML web server
BENEFITS FOR THE CUSTOMER
Programming and configuration environment based on IEC 61131-3 standard: the global
standard in programming languages for programmable controllers
Safety:It uses only a minimal amount of power and has safety features to protect you in case
it overheats or overturns. Condensate dehumidifiers are used in refrigerators to collect
water, called condensate, which is normally grey wool and can be reused over time for
industrial purposes.
Conformal Coating: ensures integrity even in harsh environments.
Savings:If you can reduce your air conditioning use by only an hour a day because of the
action of a dehumidifier, you will save around INR1520 a day… and you will probably
manage to reduce your use much farther. Air conditioning systems do reduce humidity
through their action of absorbing moisture onto the evaporator coils.
THE OUTCOME:
➢ The PLC control system allows significant advances and improvements in the
processes of industries, mainly in areas that demand greater control and
environmental air efficiency.

4. ➢ Industrial Automation of Air quality has evolved and provided an increasing number
of techniques to control temperature, humidity and removal of polluting waste
industrial environments.
➢ The PLC is used as a reference for PID control. This information is important to the
user to know how is the operation of the equipment and make necessary changes
according to the need of the process.
➢ High reliability: Very reliable for continuous and steady operation with constant air
purity. Plant availability time is better than 90 - 95% always.
➢ The only utilities required iselectrical power. Smart control of humidity ensures
energy savings.
Need a made-to-order industrial automation solution for your industry? There’s no-one
better than Messung for customised yet cost-effective industrial automation solutions
tailored for your specific application. Messung is the pioneer of indigenous PLCs and leading
Top PLC manufacturer in India. It also offers the latest SCADA applications, VFD drives and
servo drives.
Messung’s expertise and offerings span Process Automation, Servo & Motion Control
Automation, and General Purpose Automation solutions. Over more than four decades in
the business, Messung’s domain knowledge, products, solutions and unconditional service
support have made Messung a preferred name across the gamut of industries.
MESSUNG SYSTEMS PVT. LTD.
PUNE (HO),501, 502, 503, Lunkad Sky Vista,Viman Nagar, Pune - 411014, India.
Tel: +91 20 66492800 www.messungautomation.co.in Email:info@messung.com