new from eipl 2010

8/6/2019 New From EIPL 2010

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APPROPRIATE

INSTRUMENTS FOR THE

COUNTRYS NEEDS

ENVIROTECH LEADS

THE WAY


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Evolution of the RDS

First developed in 1990-91

Two stage system for separation of

coarse and fine fractions, developed

in collaboration with NEERI.

Envirotech introduced the RDS

almost 4 years before RSPM was

included in the Ambient Air Quality

Standards in India.

Initially introduced as APM451 andlater upgraded to APM460.

Today Envirotech produces three

variants of the RDS:

APM460BL

APM460NL

APM460NLDX


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The Improved RDS

Envirotech APM 460BL Brushless Blower

Sampling rate does not fluctuate

with variation in mains voltage.

Low equipment downtime and

maintenance costs.

Interference to TVs eliminated

and Audible Noise reduced toless than half of previous levels.

Castor Wheels added

for easier movement of the

instrument in the field. Small bulb provided for easier

handling at night.


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Envirotech APM 460NL

For Research & Intensive use

Practically NOISE-LESS operationof the APM 460NL makes it ideal for

monitoring air quality in residentialareas or near hospitals, libraries etc.

Main features of the APM 460NL

Sampling rate does not fluctuate

with variation in mains voltage. Brushless Blower designed for

trouble free operation even with

intensive use.

No interference to TVs.

Low equipment downtime and

maintenance costs.

However the equipment is heavy

and frequent re-location should be

avoided.


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Envirotech APM 460NLDX

Main Features:Flow rate automatically

controlled to compensate

for Dust loading on the filter.

Auto Shut-off if flow rate

drops below 0.85m3/min.

Only instrument that

conforms to BIS

Low Noise and Brushless

Blower


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Envirotech APM 460NLDX

Conforms to BIS 5182 (part 23) 2006


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Envirotech takes the lead

in developing an IndigenousPM2.5 Sampler

Envirotech Introduced the APM550 FineParticle Sampler in 1999-2000. Early usersinclude:

Research & Academic Institutes like:

Jadavpur University & Bose Institute

NEERI

IITs Kanpur, Mumbai, Roorkee

ITRC

PollutionC

ontrol Boards: West Bengal

Maharashtra

Uttar Pradesh

Orissa

With more than 100 instruments in the field

almost ALL the PM2.5 data from India isbased on the Envirotech APM 550 Sampler.

The APM 550MFC is an upgraded model of thefield proven APM 550.


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Fine Particulate Sampler

Envirotech APM 550

Critical Orifice maintainsflow rate constant at

16.7LPM In-built DRY GAS METER

reports total air volumesampled.

No electrical / heatdissipation in cabinethousing the Filter Holderensures volatile fractionsof PM2.5 Sample are notlost.

Impactors based on

designs by US EPA. Same Instrument can beused for PM10 and PM2.5Sampling.


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Envirotech APM 550MFC

Mass Flow Sensor

based automatic flow

control.

Inbuilt AmbientPressure & Temp.

Sensor for reporting

correct Volumetric

Flow rate.

Data Logger recordsFlow Rate, Ambient

Temp. & Filter Temp.

Impactors based on

designs by US EPA.

Same Instrument canbe used for PM10

and PM2.5 Sampling.


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Envirotech APM 550MFC


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PM2.5 Sampler

Why Mass Flow Measurement

Calibration of FLOW SENSOR not

dependent on Pressure and

Temperature.

This implies that air volume

measurement becomes more

reliable.

Air Volume still to be reportedin VOLUMETRIC Units

This implies that measured air

volume has to be corrected based

on prevailing ambient airtemperature and pressure.


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Measurement of Gaseous

Pollutants

Choices for Wet Chemical Methods

Pollutants that can be easily monitored:

SO2 West & Gaeke method

Nox Sodium-Arsenite method

NH3 Indophenol blue method

Ozone

Choices of hardware:

APM411 Attachment with RDS

APM411TE Attachment with RDS

APM433 Independent Gaseous Sampler


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Measurement of Gaseous PollutantsThe new APM 411TE

Gaseous Sampling Attachment

Thermoelectric Coolerskeep the impingers at acool 15C even when

ambient temperaturereaches 40C

Built-in thermostatavoids absorbing reagent

freezing in winter nights.

Filter dryer tubes &

Modified Flow ControlNeedle Valve Assembly

maintain pre-set

sampling rate.

Dryer tubes haveindicating blue-silica gel

and can be re-used aftera suitable bake.

Impingers conform toBIS


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APM 433 Gaseous Sampler

Specially tailored for Wet Chemical

Methods

Hardware Included to Facilitate Stand Alone

Operation:

Diaphragm Pump

Timer

Time Totalizer

Important Changes:

Pump provides enough suction pressure to

allow use of fritted impinger needed for

NOx

One Impinger with Fritted-disc provided with

each unit. Impinger designed for Ozone monitoring

provided as an Optional Accessory

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