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Annual Maintenance Services
EnviroMonitor
CEMS
EQMS
Remote Calibration
Annual Maintenance Services

Ensuring Reliability, Accuracy, and Compliance—Nationwide

In today’s regulatory landscape, environmental monitoring is not just a compliance requirement—it’s a strategic imperative. At NK Square Solutions, we specialize in comprehensive Annual Maintenance Contracts (AMC) for a wide range of pollution monitoring equipment, ensuring your systems operate at peak performance year-round.

With a team of nearly 20 skilled engineers deployed across multiple sites in India, we deliver end-to-end support that is both responsive and reliable. Whether you're monitoring air quality, water discharge, noise levels, or industrial emissions, our AMC services are designed to minimize downtime, optimize accuracy, and extend the life of your equipment.

Why Choose Us?

🔧 OEM-Agnostic Expertise We understand that your infrastructure may include equipment from multiple manufacturers. Our engineers are trained to service and calibrate instruments from all major OEMs, ensuring seamless support regardless of brand or model. This flexibility allows us to tailor our services to your specific setup without bias or limitation.


🌐 Pan-India Coverage Our footprint spans industrial hubs, remote installations, and urban centers alike. With engineers stationed across India, we guarantee timely service visits, rapid response to breakdowns, and consistent performance monitoring—no matter where your operations are located.


🔄 End-to-End Service Delivery From preventive maintenance and calibration to emergency repairs and compliance reporting, our AMC offering covers the full lifecycle of your pollution monitoring systems. We take ownership of every aspect, so you can focus on your core operations with confidence.


📊 Data-Driven Maintenance Our approach is rooted in analytics. We track performance metrics, service history, and calibration drift to proactively schedule interventions. This minimizes reactive maintenance and ensures your equipment remains audit-ready at all times.


Scope of Services

Our AMC packages are designed to be comprehensive, customizable, and compliant with CPCB and SPCB guidelines. Key service components include:

  • Routine Preventive Maintenance Scheduled visits for cleaning, inspection, and functional testing of sensors, analyzers, and control units.

  • Calibration and Certification Periodic calibration using certified standards, with documentation suitable for regulatory audits.

  • Breakdown Support Rapid response to equipment failures, including onsite diagnostics and repairs.

  • Spare Parts Management Inventory planning and replacement of critical components to avoid unexpected downtime.

  • Software and Firmware Updates, ensuring your systems run the latest versions for optimal performance and security.

  • Compliance Reporting Assistance Support in generating and validating data reports for submission to pollution control boards.

  • Remote Monitoring and Alerts Integration with cloud platforms for real-time data access, alerts, and predictive maintenance.

Equipment We Support

Our AMC services cover a wide spectrum of pollution monitoring instruments, including but not limited to:

  • Continuous Ambient Air Quality Monitoring Stations (CAAQMS)

  • Continuous Emission Monitoring Systems (CEMS)

  • Effluent Quality Monitoring Systems (EQMS)

  • Noise Monitoring Terminals

  • Meteorological Sensors

  • Portable Gas Analyzers

  • Dust and Particulate Monitors

  • Water Quality Sensors (pH, DO, TSS, etc.)

Whether your systems are standalone or integrated into SCADA or cloud platforms, we ensure seamless upkeep and interoperability.


Our Team: Skilled, Certified, Committed

Our engineering team is the backbone of our AMC services. With nearly 20 professionals stationed across India, we bring:

  • Multi-disciplinary Expertise Electrical, mechanical, instrumentation, and software specialists working in tandem.

  • Certifications and Training Regular upskilling in OEM protocols, safety standards, and regulatory compliance.

  • Site Familiarity Engineers familiar with your plant layout, operational constraints, and reporting needs.

  • Customer-Centric Approach Transparent communication, proactive scheduling, and a commitment to minimizing disruption.

Value We Deliver

💡 Operational Continuity Avoid costly downtime and ensure uninterrupted data collection for compliance and decision-making.

📉 Cost Efficiency Preventive maintenance reduces long-term repair costs and extends equipment lifespan.

📈 Regulatory Confidence Stay audit-ready with calibrated, certified instruments and well-documented service records.

🔒 Data Integrity Ensure accurate, tamper-proof readings that stand up to scrutiny from regulators and stakeholders.

🤝 Trusted Partnership We don’t just service equipment—we build long-term relationships based on trust, transparency, and performance.

Flexible AMC Plans

We offer tiered AMC packages to suit different operational needs and budgets:

Plan TypeFeaturesIdeal For
BasicPreventive maintenance, calibration, documentationSmall facilities, low-frequency use
StandardIncludes breakdown support, spare parts planningMid-sized operations
PremiumFull lifecycle support, remote monitoring, compliance assistanceLarge-scale, multi-site setups

Custom plans are available for clients with unique requirements or legacy systems.

Let’s Build a Cleaner, Smarter Future

Environmental responsibility begins with reliable data. Our AMC services ensure that your pollution monitoring infrastructure remains accurate, compliant, and future-ready. Whether you're a manufacturing plant, a utility provider, or a government agency, we’re here to support your mission with professionalism and precision.


📞 Contact Us Today Let’s discuss how our AMC solutions can be tailored to your site, equipment, and compliance goals.


EnviroMonitor

EnviroMonitor is a multi-device multiprotocol compatible data acquisition and management software. The software has an installed base of over 650 units across India and complies with the data management guidelines of various state Pollution Control Bodies as well as CPCB, New Delhi.


ENVIRO MONITOR consists of a suite of user-friendly reports that serve the needs of internal teams as well as compliance requirements. Reports that are part of the current version are
- Live dashboard
- Data / statistical reports
- Diurnal reports
- Alarm reports
- Summary Reports – Daily, Monthly, Yearly
- Automated reports through email
- Automated alerts through email and SMS

Inbuilt Library of protocols

Most of the popular protocols are part of the library such as  Horiba / DKK-TOA / Oliver-IGD / SKC Inc. / Thermo Fisher Scientific / Met One Instruments / Spectrum Weather / Siemens / MIP-POY / Madur / Teledyne / Durag / 3M / IN-SITU Inc. / FPI / LAND Instruments etc. Robust methodology to add new protocols

Multi-Device Multi-Protocol enabled

The software is agnostic to the device manufacturer and is built to work across has been built independent of the manufacturer. It can acquire data from any device using the standard digital communication protocols such as SDI-12, MODBUS, RS 422, RS 233 and RS 485. Analog communication can be established using any standard A/D converter.

Built for India

The software has been built from scratch for the India market. NK Square has incorporated continuous feedback from the industry. This is an ongoing process, and we expect the software to rapidly evolve over the future versions

Regulatory Compliance

The Software has been built keeping in mind the compliance requirements of pollution monitoring / controlling authorities in India. The guidelines and feedback is incorporated into the product in a continuous manner.

Endless Security Service

A host of security features are part of ENVIRO MONITOR starting with encryption of database, audit trail of database changes, hardware dongle to prevent unauthorized usage, automated data back-up and periodic archival of database.

Modular Design

The software has been built given the diverse needs of the users and the regulatory authorities. ENVIRO MONITOR is one of the three components of the larger solution and is the critical one. Along with ENVIRO MONITOR, there is a central version for clients with multiple stations and ENVIRO MONITOR MASTER to transmit the data to CPCB / SPCB.

Display Board Management

One of the important compliance requirements is the dissemination of data to the public through large Display Boards at the source of emissions. ENVIRO MONITOR has an exclusive module to manage the messaging requirements of customers. Customers can integrate custom messages with environment data to share with the public.

Visualization

The software presents data in rich visual and easy to comprehend graphs. Weather data is presented through Wind and Pollution Rose diagrams.

Large user base

With a larger user base spread across India and multiple industries, the software has evolved to be robust. We are confident that it encompasses all use-cases in the industry.

CEMS

Continuous Emission Monitoring Systems (CEMS)

Continuous Emission Monitoring Systems (CEMS) are advanced, automated solutions that track and report real-time emissions from industrial stacks. These systems measure key pollutants such as Particulate Matter (PM), Sulphur Dioxide (SO₂), Nitrogen Oxides (NOₓ), Carbon Monoxide (CO), Ammonia (NH₃), and Volatile Organic Compounds (VOCs), ensuring industries operate within prescribed environmental norms.


In India, the Central Pollution Control Board (CPCB)—under the Ministry of Environment, Forest and Climate Change (MoEF&CC)—has made CEMS mandatory for high-polluting industries. This directive stems from key environmental legislations:

  • Water (Prevention and Control of Pollution) Act, 1974

  • Air (Prevention and Control of Pollution) Act, 1981

  • Environment (Protection) Act, 1986

Since 2014, CPCB has issued multiple mandates requiring industries such as power plants, cement, pharmaceuticals, and tanneries to install online emission monitoring systems. The 2018 notification (G.S.R. 96(E)) expanded this requirement to include boilers in sectors like sugar, textiles, and chemicals. The latest 2024 guidelines further standardize measurement techniques and broaden the scope of monitored parameters.

Industries must transmit real-time emissions data to CPCB and State Pollution Control Boards (SPCBs) via secure Data Acquisition Systems (DAS). This ensures regulatory oversight, public transparency, and swift enforcement in case of violations.

Real-time monitoring is no longer a compliance luxury—it’s a strategic necessity. CEMS empowers industries to:

  • ✅ Detect exceedances instantly and take corrective action

  • ✅ Build trust with regulators and clients through transparent operations

  • ✅ Avoid penalties, shutdowns, and legal complications

  • ✅ Streamline reporting and reduce manual errors

By aligning with CPCB’s vision for cleaner, data-driven industrial practices, CEMS positions your business as a responsible, future-ready player in environmental compliance.


 NK Square is supplying integrated and engineered solutions for Continuous Emission Monitoring applications. We are authorized by Horiba India Pvt Ltd. to market and distribute their CEMS product ENDA-5000 Stack Gas Analysis System, with Instantaneous output of the parameters like NOx, SO2, CO, CO2, O2. These systems have a smaller footprint, and use cross-flow modulated non-dispersive infrared (NDIR) detection with a magnet-pneumatic detection method that is inherently drift-free.

EQMS

Effluent Quality Monitoring System

Effluent Quality Monitoring Systems (EQMS), also referred to as Continuous Effluent Quality Monitoring Systems (CEQMS), are automated, real-time systems designed to monitor the quality of industrial effluents before discharge. These systems are critical for ensuring that wastewater released into the environment meets regulatory standards and does not harm public health or ecosystems.


In India, the Central Pollution Control Board (CPCB) has mandated the installation of EQMS in grossly polluting industries (GPIs) and common pollution control facilities such as:

  • Common Effluent Treatment Plants (CETPs)

  • Sewage Treatment Plants (STPs)

  • Tanneries, distilleries, pulp & paper, sugar mills, and more

This directive was first issued in February 2014 under:

  • Section 18(1)(b) of the Water (Prevention and Control of Pollution) Act, 1974

  • Environment (Protection) Act, 1986

Industries discharging into the Ganga River and its tributaries were prioritized, with a mandate to install online monitoring systems and transmit data to CPCB and respective State Pollution Control Boards (SPCBs) via the RTDMS portal.


We are authorized by Horiba India Pvt Ltd. to market and distribute OPSA – 150 Organic Pollutant Monitor. This product adopted HORIBA’s proprietary rotary cell length modulation method, a measuring technique incorporating 25 years of expertise. This method is the landmark because cell length modulation and wiper cleaning are performed simultaneously. Using this method, stable data can be obtained constantly for long periods, even in harsh drainage environments. Using this device the parameters that can be monitored are COD, BOD, TSS, pH. OPSA-150 also excels in measurement of both low and high concentrations. It can be used in diverse fields, including extremely contaminated water discharge sites. NK Square supplies the other Horiba manufactured portable devices like Industrial pH meter, Industrial ORP meter, Industrial Conductivity meter, sanitary conductivity meter, resistivity meter, dissolved oxygen meter and residual chlorine meter.

Remote Calibration

Real time remote calibration - AS per CPCB guidelines

The instruments/ analysers for real time monitoring of gaseous emissions shall be calibrated with respect to their functioning, drift, linearity detection limit, output, operating temperature and other relevant parameters and the system shall be rechecked for its health and data accuracy and reliability, following multipoint calibration (at least 03 span concentrations) using standard methods and certified reference materials. NKSS has implemented a system that checks for the zero calibration and span calibration check for the analyzers. We have through remotely, and submitting the results to CPCB. In fact, we are the first one’s in the market to design and manufacture a customized device NKSS EnviroCal™ device that performs multipoint calibration designed our NKSS EnviroCal™ device in such a way that it suits and works for any make of the analyzer.


The data comparison and calibration verification shall be done by CPCB. The health of the instruments/analyzers shall be assessed on daily basis at fixed time by checking the zero drift. The instruments/ analysers shall be rechecked for zero and span drift using standard methods and standard reference materials. The drift needs to be recorded and suitably incorporated in the data collected over the period. NK Square has implemented the online remote calibration check facility at various industries and demonstrated the same to CPCB and SPCB’s. During the online remote calibration check is being performed, we record the diagnostics data and submitting the same to CPCB for their reference, which defines the healthiness of the instrument. CPCB is verifying the calibration check results after performing it.