Envirotech Instruments Private Limited Okhla, Delhi

Reliable information of wind movements is a critical requirement for air quality management. Polluting gases and particulates released from elevated industrial stacks disperse by a variety of mechanisms and by the time the pollutants reach ground level their concentration is reduced to a fraction of the emitted level. The extent of dispersion and the resultant ground level concentration (GLC) depends upon local meteorological parameters like wind speed, wind direction, atmospheric turbulence or stability and the mixing height. Reliable local wind data can also help to identify possible sources that could be adversely affecting air quality in an area. Envirotech Wind Monitoring Systems have been used for past several years all over the country by consultants, industry and researchers to generate micro-meteorological data. Feedback from this large body of users has often led to system upgrades. The WM271 is our latest model Wind Monitor with important new features specifically incorporated for Indian field use

Feature : Ethernet Or Modems Reduced Power Consumption. New Battery Backed Power-pack With Optional Solar Panel Charger Enables Operation In Open Fields New Windows Compatible Software Allows:

Frequency : 50HZ

Feature : Reduced power consumption, corrosion resistant, designed accurately, highly efficient

Feature : Easy to operate and is light in weight

Type : Sound Level Meter

Feature : Secure data transfer, hassle free functionality, Simple to use and maintain, Long Life

MAIN FEATURES Specially to monitor Dioxins, Furan & provision for monitoring of Heavy Metals emissions Collection based on wet chemical techniques Measures total quantity volume of the emissions Heating Probe & box assembly with auto temp controller Rugged & convenient for sampling for long duration with oil free Vacuum Pump assembly Glass lining inside the nozzle, thimble holder & probe pipe Tripod stand for better accessibility Probe set accommodated in a carrying case Convenient to use List of Components VSS3: (1) :Instrument panel consisting of pyrometer, manometer rotameters, vacuum gauge, stop watch, dry gas meter & temperature controller. (2): Probe kit consisting of probe pipe, pitot tube, connecting hoses, tool kit, filter holder, nozzles, thermocouple, heating system, tripod etc. (3): Cold box assembly consisting of glass impingers, condenser glass coil, moisture bottle & water pump. (4): Vacuum pump assembly. In addition Stainless Steel Probe, Hose Pipe, Thimble Holder, Set of 3 SS Nozzles, Set of 4 Glass Impingers (240ml.) for normal Stack Emission Monitoring also provided.

The most common and widely used method (world over) is extractive sample method or Grab sampling technique. Grab sampling technique is also often treated as the reference standard method. Grab Sampling technique is not restricted to a specific pollutant. The same system with different reagents may be used for a variety of pollutants and over different ranges of concentration. Stack Sampler VSS1PLS is one such Grab Sampler which can monitor Particulate Matter (PM) and any water-soluble gaseous pollutants l ike SO, NO., HF, Cl, , H, S, NH, etc., in industrial emissions from Stationary source I Chimney and Vent. Utilizing the experience of last 30 years, CPCB in 2015 revised the specifications of the Stack Sampling System & Envirotech has produced a new model VSS1PLS with improved features strictly in compliance with latest CPCB guidelines so as to obtain reliable results. VSS1PLS overcomes all the drawbacks of previous models. The operating principle is simple. The Particulate Matter is collected over a filtration thimble. It entraps and absorbs various gaseous pollutants in suitable reagents, which are analyzed subsequently by simple Wet Chemistry methods to determine the concentration of specific pollutants.

The most common and widely used method (world over) is extractive sample method or Grab sampling technique. Grab sampling technique is also often treated as the reference standard method. Grab Sampling technique is not restricted to a specific pollutant. The same system with different reagents may be used for a variety of pollutants and over different ranges of concentration. This Stack Sampler VSS1 is one such Grab Sampler which can monitor Particulate Matter (PM) and any watersoluble gaseous pollutants like SO, , NO., HF, Cl, , H, S, NH, etc., in industrial emissions from Stationary source I Chimney and Vent. PORTABILITY FOR ROUTINE SAMPLING Only repeat and frequent monitoring can give a true insight into the emission characteristics. It is thus more important to have a simpler and handy device,which can be used more often with ease and convenience, rather than a bulky and cumbersome system. At times transportation efforts become more hectic & expensive than the actual monitoring exercise. Based on our experience and valuable feedback obtained from our large group of valuable customers, regulatory authorities, consultants, and R&D Centers, need for improved and Handy instrument has been felt. The Stack Sampler VSS1 has been designed to overcome such problems. The operating principle is simple. The Particulate Matter is collected over a filtration thimble. It entrap and absorbs various gaseous pollutants in suitable reagents, which are analyzed subsequently by simple Wet Chemistry methods to determine the concentration of specific pollutants.

Envirotech’s Noise Monitoring Terminal is optimized for outdoor use and can be left unattended as part of an environmental noise monitoring system for mobile, permanent and semi-permanent monitoring. It can be used in all climatic environments and is especially suitable for industrial, city and field use. The terminal consists of a weather proof cabinet, special outdoor microphone, data logger, a GPRS modem and a battery. The terminal can be mounted on a mast or a pole and can also be powered by a solar panel for smooth operation in harsh Indian conditions. State of the art software is provided to control the terminal remotely from a central receiving station via GPRSEDGE3G. Post processing software for report preparation and data analysis is also included. Real time data can be made available on a website or shown on a display board as required.

Feature : Durable, Fast Cleaning,Rechargeable, Maintenance free Battery

Met One Instrument�s BAM-1020 beta attenuation mass monitor has US-EPA certification (EQPM-0798-122) as an Equivalent Method for PM10 monitoring. It has corresponding certifications in the United Kingdom, Korea, and China for automatic monitoring and recording of PM10 concentrations. The BAM-1020 may be equipped with a sharp cut cyclone PM2.5 or a WINS PM2.5 sampling inlet for automatic monitoring of finer particulate matter. The BAM-1020 can also be configured for the monitoring of total suspended particulate (TSP).

APM 821 is a light weight, battery operated Handy Sampler that can be used for accurate, reliable and frequent assessment of work place pollution and worker-exposure to gaseous pollutants as well as particulates.

Ambient Air enters the APM 550 MINI sampler through an omni-directional inlet designed to provide a clear aerodynamic cut-point for particles larger than 10 microns. The air stream then passes through a WINS Impactor that retains the fraction between PM10 and PM2.5. The PM10 and PM2.5 impactors used in the APM 550 MINI are based on designs standardized by USEPA and as such the system complies with international norms for PM 2.5 Samplers. The sampling rate is held constant at 1 m3hr by a critical orifice. A special light weight oil free pump has been used in the instrument and adequate cooling air draft has been provided to ensure that the operating temperature near the filter holder remains close to ambient temperature. Sampling rate is continuously displayed on a built-in rotameter while the duration of sample is available through a Time Totalizer. Special features: PM10 and PM2.5 Impactors of sampler based on designs standardized by US EPA Brushless, Oil-free, light weight pump practically requires no maintenance Filter holder designed for any 47mm diameter filter media Critical Orifice maintains constant sampling rate of 1 m3hour Provision to attach gaseous sampler Compact cabinet design for easy portability

Ambient air enters the APM 550 MFC sampler through an omnidirectional inlet designed to provide a clear aerodynamic cut-point for particles larger than 10 microns. The air stream then passes through a WINS Impactor that retains the fraction between PM10 and PM2.5. The PM10 and PM2.5 impactors used in the APM 550 MFC are based on designs standardized by USEPA and as such the system complies with international norms for PM2.5 Samplers. The sampling rate is held constant at 1 m3hr by a mass flow controller. An ambient air temperature sensor and barometric pressure sensor have been provided to automatically compensate for temperature and pressure while reporting flow rate in volumetric flow units. The APM 550MFC has an in-built data logger that records air temperature, filter temperature, flow rate and also totalizes and records the volume of air sampled. A PC based software is provided to download the data for audit. features: PM 10 and PM 2.5 Impactors of sampler based on designs standardized by US EPA. Flow Control based on Mass Flow measurements to remove errors due to pressure, temperature changes (of both ambient air and filter). Auto shut off if flow rate drops significantly below 1 m3hr. Microcontroller based datalogger records Air Temp., Filter Temp. and Flow rate.

he APM 550 system is a manual method for sampling fine particles (PM2.5 fraction). Ambient air enters the APM 550 series samplers system through an omni-directional inlet designed to provide a clean aerodynamic cut-point for particles greater than 10 microns. Particles in the air stream finer than 10 microns proceed to a second impactor that has an aerodynamic cut-point at 2.5 microns. The air sample and fine particulates exiting from the PM2.5 impactor are passed through a 47mm diameter Teflon filter membrane that retains the fine particulate matter APM 550 EL keeps the sampling rate constant at 1m3hr by a microprocessor based electronic flow controller that automatically compensates for increasing pressure drop due to dust deposit on the filter. An ambient air temperature sensor and barometric pressure sensor have been provided to automatically provide temperature and pressure correction while reporting flow rate in volumetric flow units. An additional filter pressure sensor is also provided to continuously monitor and record the filter pressure and the system terminates the sample collection if the pressure drop across the filter exceeds a safe limit. The APM 550 EL has an in-built USB Flash memory based data logger that records Filter ID, air temperature, filter temperature, barometric pressure, flow rate, Coefficient of Variation (CV) and also totalizes and records the volume of air sampled. A PC based software is provided to download the data for audit and prepare an intelligent report highlighting all important information in a convenient graphical format.

The APM 550 system is a manual method for sampling fine particles (PM2.5 fraction) and is based on impactor designs standardized by USEPA for ambient air quality monitoring. Ambient air enters the APM 550 series samplers system through an omni-directional inlet designed to provide a clean aerodynamic cut-point for particles greater than 10 microns. Particles in the air stream finer than 10 microns proceed to a second impactor that has an aerodynamic cut-point at 2.5 microns. The air sample and fine particulates exiting from the PM 2.5 impactor are passed through a 47 mm diameter Teflon filter membrane that retains the fine particulate matter. The sampling rate of the system is held constant at 1 m3hr by a suitable critical orifice. The standard system is supplied with a Dry Gas Meter to provide a direct measure of the total air volume sampled. Special features: PM10 and PM2.5 Impactors of sampler based on designs standardized by US EPA Two part cabinet ensures that temperature of PM 2.5 filter remains close to ambient temperature Imported brush-less pump with a low noise Lower sampling rate of 1m3hr reduces filter choking even in areas having high FPM levels Critical Orifice maintains constant sampling rate of 1 m3hour Compact and portable

The Envirotech APM 520 Flow Calibrator is designed to provide a reliable and portable flow standard for flow verification of environmental sampling systems. The APM 520 is a primary standard flow calibrator based on a glass body soap bubble meter. Photo-optics based sensing and quartz crystal clock is utilized to provide an automatic and accurate estimate of elapsed time for the soap bubble motion through a fixed volume. Each APM 520 calibrator is tested against positive displacement flow standards traceable to NIST or FCRI, maintained at Envirotech. Optionally third party certification of individual calibrators can be provided at an extra cost.

Features : Primary Standard Automatic Photo-optic sensing and timing ensures high accuracy Calibration traceable to national standards Digital display directly in LPM Etc.

The APM 460 sampler uses an improved cyclone with sharper cutoff (D50 at 10 microns) to separate the coarser particulates from the air stream before filtering it on the glass microfibre filter. By using the APM 460, measurement of Respirable Particulate Matter can be done accurately and TSPM can also be assessed by collection of dust retained in the cyclone cup. APM 460 BL comes with an in-built voltage stabilizer to compensate for voltage fluctuations. This model has been made more user-friendly by providing a lighting arrangement for night operation, tool box within the instrument, softer handles, lockable top-cover and wheels for easy transportation. The cabinet design has also been improved to prevent entry of rain water and dust into the machine.

The APM 460 NL uses an IMPORTED brushless, continuous rated induction motor driven blower to significantly reduce equipment downtime, maintenance efforts and inconvenience to community. This new improved PM 10 sampler avoids problems arising due to frequent brush wear and limited armature life of blowers used in earlier models.

Features : Lockable top cover and gaseous attachment., Electromagnetic Interference (EMI) to TVs totally eliminated

APM 460 DXNL is one of the most advanced PM10 samplers being manufactured in India. It is based on CSIR NEERI technology and is the only PM 10 sampler in India that conforms to BIS 5182 (Part 23): 2006 Automatic flow controller and auto shut off In all previous models of particulate samplers in use in the country, the sampling rate varies with dust loading on the filter and fluctuates with changes in the mains voltage. The APM 460 DXNL uses an electronic flow controller to automatically maintain constant sampling rate through the filtercyclone assembly. The size fractionating cyclone of the APM 460 DXNL thus operates close to its designed separation velocity resulting in a sharper cut-off for particulates larger than 10 microns. When the dust load on filter becomes excessive and exceeds the capacity of the blower the electronic circuits provided in the flow controller automatically shut down the machine.

Feature : Brushless regenerative blower with very little noise., Heavy duty Induction motor fitted in blower requires no maintenance.

The APM 433 Gaseous Pollutants Sampler has been designed for monitoring Gaseous Pollutants like SO2, NO2, Cl2, H2S, O3, NH3 etc. in ambient air. The APM 433 is an independent stand-alone monitoring instrument (unlike our gaseous sampling attachments APM 411 and APM 411 TE that need to be paired with a dust sampler). A suction pump is also made an integral part of the sampler, besides a flow-meter, time totalizer and timer. Sampled air is bubbled through suitable reagents that absorb specific gaseous pollutants and the absorbing media analyzed as per standard wet chemical methods.

The APM 411TE is designed as an attachment to operate with Envirotech�¢ï¿½ï¿½s Respirable Dust or High Volume Samplers and PM 2.5 samplers. When paired with an appropriate dust sampler, the APM 411 TE allows the user to collect gaseous pollutant samples (for monitoring SO2, NOx, NH3, Ozone, etc) as well as dust samples simultaneously.

The Respirable Dust Sampler is essentially a particulate sampling system requiring a high flow-rate. Gaseous sampling requires only a few LPM of air flow. All models of Envirotech Respirable Dust Samplers are provided with a suction port and mounting hardware to facilitate interface of the Gaseous Sampling Attachment APM 411.