Historically, hospitals have relied on cylinders and liquid oxygen tanks for their oxygen supply needs. Since the 1970s, onsite oxygen generators have become the preferred source for hospitals that want uninterrupted oxygen supply, and want control of their oxygen needs and usage. The recent Covid-19 pandemic and the acute shortage of medical oxygen experienced by India has only made the need for sustainable, controllable and reliable oxygen generation plants more urgent and important. Medical facilities have to build their own onsite oxygen generators to cater to their patients.

1. MEDICAL OXYGEN GENERATION PLANT AUTOMATION
WITH MESSUNG'S NX-ERA SERIES
Historically, hospitals have relied on cylinders and liquid oxygen tanks for their
oxygen supply needs. Since the 1970s, onsite oxygen generators have become the
preferred source for hospitals that want uninterrupted oxygen supply, and want
control of their oxygen needs and usage.
The recent Covid-19 pandemic and the acute shortage of medical oxygen
experienced by India has only made the need for sustainable, controllable and
reliable oxygen generation plants more urgent and important. Medical facilities have
to build their own onsite oxygen generators to cater to their patients.
THE CUSTOMER:
Our customer provides turnkey solution including a compact oxygen plant and a
cylinder filling station. Available in various capacities and oxygen concentrations,
they provide full autonomy to produce oxygen at hospitals& covid centres, on a
continuous basis.
KEY FEATURES OF THE OXYGEN PLANT:
➢ Turnkey containerized or skid mounted solution
➢ On-site oxygen production at 93 to 95+% purity
➢ Ready to use for hospital & covid centre
➢ Commercial use after filling of cylinder by using HP Compressor
➢ Production of an oxygen back up supply
➢ Centralized autonomous production of oxygen cylinders for local use

2. KEY SOLUTION GOALS:
1. To monitor and control the feeding and flow of Medical Oxygen Plant
2. To develop a logic to measure Pressures, Temperatures and Oxygen Analysers at
various stages of process and control the flow by operating the SOVs in Auto and
Manual mode in programming software MasterTool IEC XE 3.31 for XP325.
3. To measure flow and calculate the total flow of air supplied at inlet and Oxygen
obtained at outlet side of the process.
4. To develop a logic to raise alarms, generate reports and trends in HMI.
5. To display the measure values of pressures, temperatures and oxygen levels,
timers sequence values etc. and alarms, reports, trends on HMI.
6. To send emails of critical alarms and enable the users to access all HMI screens
at any remote place through smartphone or PC over internet.
THE SOLUTION:
Messung engineers studied the plant and its requirements, and came up with a
solution consisting of
• XP325 PLC controller
• XM-Pro MOD-AI-4 (analog input module)
• 10 inches HMI

3. THE HEART OF THE SYSTEM: NX-ERA XPRESS
NX-ERA Xpress is a powerful micro PLC(Programmable Logic Controller)
developed by Messung, leading micro PLC manufacturer. NX-ERA Xpress brings
you world-class technology for entry-level applications - at a cost-effective price.
Packed with advanced features, NX-ERA Xpress compact 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.
BENEFITS FOR THE CUSTOMER
Remote IO System on a MODBUS Network: provides access to sensor-level data
in difficult-to-reach areas. This ensures smoother operation of system components
while streamlining device replacement and machine maintenance – again saving
costs and improving efficiency.
Cloud connectivity
Conformal Coating: ensures integrity even in harsh environments
Access HMI from any location through mobile, laptop etc.: anytime, anywhere
accessibility and control
Process Alarms shall be received on Email/Text messages: to enable faster
responses and decision making
NX-ERA Xpress Highlights:
• 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

4. Programming and configuration environment based on IEC 61131-3 standard:
the global standard in programming languages for programmable controllers
Designed to meet the specific demands of Industry 4.0
THE OUTCOME:
➢ Due to full automation, all systems are designed for un-attended operation
and automatic Oxygen demand adjustment
➢ The design and Instrumentation make the plant very compact, assembly on
skids, prefabricated supplied from factory
➢ Start-up time to get Oxygen purity is negligible. So, these units can be
switched ON & OFF as per Oxygen demand changes
➢ High reliability for continuous and steady operation with constant Oxygen
purity. Plant availability time is better than 90 - 95% always
➢ The only utilities required are cooling water and electrical power. So cost of
electricity consumed is the cost of Oxygen production
MESSUNG SYSTEMS PVT. LTD.
PUNE (HO),501, 502, 503, Lunkad Sky Vista,Viman Nagar, Pune - 411014, India.
Tel: +91 20 66492800 https:www.messungautomation.co.in Email:info@messung.com