types of dust monitoring

Types of monitoring

TSI – Nick Brown Regional Sales Manager UK & Ireland

6th July 2016

Agenda

+Gravimetric sampling+Real time sampling+Personal monitoring+Work place monitoring

05/01/23© TSI Incorporated 2

Measurement Methods

2. Real time monitoring

•Aerosol mass concentration

•Particle counts

1. Gravimetric Sampling


Gravimetric Sampling

HSE Standard MDHS 14/4

+ Method for Determining Hazardous Substances

+ Sampling should be as long as possible for WEL and 15 minutes for STEL

+ Weight in mg/m3 & analysis by laboratory

+ 2-3 week turn-around time


Personal Monitoring

MUST be taken in the Breathing Zone

30 cm Sphere 30 cm Sphere around the around the nose and nose and

mouthmouth


Sampling Results+ Laboratory identifies Amount of Hazard Collected (mg)

+ Amount of Air Pumped is identified by the Pump (m3)

+ Occupational Hygienist can Calculate mg/m3

+ If amount is too high – Corrective Action is mandatory!

But what happened?

Was it over the limit all of the time?

Or were there Peaks during the 8 hour sample?


Real Time Monitoring

TIME

Diagnostic Instruments find

problems


How do I know if I have a problem?


Occupational health monitoring

Personal exposure monitoring

Real time work place monitoring

DustTrak/P trakDustTrak/P-Trak PhotoIonisationDetection

AbsorbentTubes

(gases) Gravimetric

Real time

Personal Aerosol Monitor+ TSI SidePak AM510 – NEW AM520

+ Wear like a Sampling Pump

+ Particle sizes 1.0, 2.5, 4.0 & 10 µm

+ Static & personal monitor

+ TrakPro software


Applications for AM510/Sidepak+ Personal Exposure monitoring/OH studies+ Ambient/work area monitoring+ Trending/screening+ Engineering studies+ Environmental sampling – e.g. local authorities London+ Research work – e.g. Homes in London


How do I know if I have a problem?


Occupational health monitoring

Personal exposure monitoring

Real time work place monitoring

DustTrak/P trakDustTrak/P-Trak/AeroTrak

PhotoIonisationDetection

AbsorbentTubes

(gases) Gravimetric

Real time

Real time monitoring DustTrak family+ Mass Concentration

Indicative measurement in mg/m3

+ Graphical representation+ Instantaneous readings

DANGER ZONEoil fume/mist

airborne dustvirusses colour pigment pollenbacteria hairstobacco smoke coal dust

carbon black cement dustmilled flour0 0,01 µm 0,1 µm 1 µm 10 µm 100 µm

(0,1 mm)visible by electron microscope visible by microscope visible by eye


Revolution in Real-time MonitoringThe DustTraks are:

+Continuous+Real-time +90 degree light scattering photometers+2 ranges – DustTrak II and DustTrak DRX

They are used to determine the mass concentration of dust aerosols


DUSTRAK II – The single channel photometer

Handheld Models

+ Lightweight+ Perfect for Walkthrough Surveys+ Single Point Data Collection+ Manual and Programmable Data Logging+ Rechargeable Li-Ion Battery+ Concentration up to 150mg/m3

+ Free TrakPro Download SoftwareDesktop Models

+ Ideal for Long Term Surveys+ Remote Monitoring Applications+ Manual and Programmable Data Logging+ Rechargeable ‘Hot Swap’ Li-Ion Batteries+ Concentration up to 400mg/m3

+ Collects Gravimetric Samples+ Free TrakPro Download Software


Impactor Nozzles

Collection plate

Flow

Nozzle Diameter Dj

Jet to plate distance

Jet velocity U+ PM10 – Particles less than 10um

+ PM 2.5 – Particles less than 2.5um

+ PM1.0 – Particles less than 1.0um

A built-in Pump allows the use of a variety of size-selective inlet conditioners

The addition of a Cyclone enables the Respirable fraction (4.0um @ 50%) to be measured


DustTrak DRX – the multichannel photometer

+ DustTrak DRX aerosol monitorsare advanced continuous real-time, 90° light-scattering

laser photometer that simultaneously measure mass and size fraction • No other monitor can do both!

+ Desktop and handheld monitors measure size-segregated mass fraction concentration • Total PM, PM10, PM4.0, PM2.5, and PM1.0 size fractions• Over a wide concentration range, 0.001 – 150 mg/m3


Why is particle size important?


+ Small particle low in mass but can cause major health effects

+ Occupational hygienists interested in PM 4 and below

+ DustTrak DRX can measure all these fractions, plus total mass at the same time

+ It is essentially a photometer and particle counter in one!!

Examples ofDustTrak usersDustTrak Handheld+Walk through surveys in industry - construction+Identify “hotspots” – company where you have different jobs e.g. welding, grinding etc+Find the problem – ? Filter problem+Demonstrate filters – sales tool+Indoor air quality surveys

DustTrak Desktop+Continuous monitoring in industry (after using handheld)+Petrochem industry+Environmental monitoring


Ultrafine ParticleCounter+ TSI P-Trak+ New concept for air monitoring Condensation

particle counter+ Particles size range 20nm – 1micron+ Measured in particles / cc+ Ultrafine and Nanoparticles


P-Trak users+ Anyone working with nanoparticles

+ Cutting/grinding of nanomaterials

+ Indoor air quality surveys – diesel exhaust

+ Environmental monitoring – ultrafine particles

+ Finding “hotspots”

+ You can’t solve a problem you can’t find!!


Q trak indoor air quality meter

+ Monitors levels of temp/humidity/CO/CO2/VOC/Velocity

+ Plug and play system+ Battery operated+ 39 days worth of data storage


Examples of Q trak users

+ IAQ investigations+ Industrial hygiene surveys+ Baseline trending and screening+ Building commissioning+ Tracking down emissions to their source (point

source location)


Indoor air quality survey tools+ ‘Sick building Syndrome’+ Dusttrak for particulate analysis+ Sidepak for personal monitoring+ P trak for nanoparticle count (diesel exhaust)+ Q trak for measurement of

temp/humidity/C02/CO/VOC


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Questions?