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OPERATION MANUAL

PUF SAMPLER

Envirotech Model APM 460 PUF

Application

•

Monitoring of Polycyclic Aromatic Hydrocarbons (PAHs)

•

Monitoring of Pesticides and Polychlorinated Biphenyls
(PCBs)

Envirotech Instruments Pvt. Ltd.

A-271, Okhla Industrial Area, Phase-1, New Delhi – 110020

Tel No. 011-26813887, 26814139 Fax No.011-26811833/26810591

email

[email protected]

website

www.envirotechindia.com

Содержание APM 460 PUF

Страница 1: ...clic Aromatic Hydrocarbons PAHs Monitoring of Pesticides and Polychlorinated Biphenyls PCBs Envirotech Instruments Pvt Ltd A 271 Okhla Industrial Area Phase 1 New Delhi 110020 Tel No 011 26813887 26814139 Fax No 011 26811833 26810591 email envirotech vsnl com website www envirotechindia com ...

Страница 2: ...Often concentration of these compounds measured in ambient air is in nanogram per meter cube Results of large number of research studies where PAH and PCBs are measured in filter dust of HVS TSPM and in filter dust of RDS PM10 have shown presence of PAH PCBs in particulates As a result world over measurement of PAH PCBs are done in particulates collected on the filter paper Monitoring results have...

Страница 3: ...ing Recommended Filter Any standard 8 x10 filter such as Whatman GF A or EPM 2000 for sampling of PM10 dust where high molecular weight PAH are collected with particulates Sampling Time upto 48 hours Sampling Time Record Electromechanical Time Totalizer 0 to 9999 99 hours accurate upto 0 6 minute gives actual on time of the sampler Automatic sampling time Control A programmable Digital Timer is us...

Страница 4: ...esigned and the PUF cartridge has been located just below the glass microfibre filter paper 2 The Cyclone has been designed for required flow rate of 200 300 liters min for fractionating dust into two fractions PM10 dust passes through the cyclone and gets deposited on the filter paper while coarse dust above 10 micron is removed from the air and accumulates in the cup fitted under the cyclone hop...

Страница 5: ...Figure 1 The figure above shows a schematic diagram of the APM 460PUF Sampler while the photograph shows the actual instrument ...

Страница 6: ...APM 460PUF has been extensively operated in parallel with reference PM10 sampler in various climatic conditions and found giving comparable results Envirotech has decades of experience in manufacturing of cyclones which are fitted in various models of the Respirable Dust Samplers since 1992 The cyclone of the PUF sampler gives comparable PM10 values at flow rate in the range of 200 300 liters min ...

Страница 7: ...ntained A neon indicator has also been provided to indicate the mains supply An over current cutoff has been provided to protect the system If the current protection trips off you have to press the RED reset button on the instrument panel CAUTION Do check the reason for over current tripping before re starting the operation Power on off switch This DPST toggle switch is used to control the AC main...

Страница 8: ...otor Top Cover This is a single piece casting filter Cover with provision of clamps for fitting of the filter for collecting the Pm10 fraction Cyclone This unit separates the coarse particulates from the air stream This coarse fraction gets accumulated in the sampling bottle placed under the hopper assembly of cyclone while fine dust PM10 passes through the cyclone and is collected on the filter p...

Страница 9: ...MANOMETER The Manometer Assembly is provided to accurately measure the pressure drop across the Orifice Plate fitted in the filter adaptor casting and its scale is graduated to read directly the flow rate of air in meter cube per min The manometer scale is not linear and it is important to carefully zero the level of the liquid column prior to use The Manometer uses distilled water as a manometer ...

Страница 10: ...herefore fill it slowly and carefully In case water level has gone above zero level excess water has to be taken out It is recommended to flush out all water from the tank after removing PVC pipe connections of the manometer to pressure taps of orifice plate Hold the PVC tube connected to glass tube and blow air in PVC tube connected to manometer tank to drain all water from the tank Ensure that f...

Страница 11: ... Normally filters should be conditioned at 25 deg C and 35 Humidity for at least 16 hours both for initial weighment and after sample collection Check the following points during filter preparation Check for Pinholes Inspect the filters against a bright lamp or light for pinholes and micro cracks Numbering In case the filters are not pre numbered put identification numbers on a corner of the under...

Страница 12: ...F Holder assembly between the blower and the filter adopter using the knurled rings The PUF cartridge is re useable after extraction in Soxhlet apparatus for 12 16 hrs or as specified in the test method Detailed procedure of PUF cleaning and preparation is given in standard USEPA method TO 13 Precautions Do not touch the PUF cartridge with bare hands Handle only the glass PUF holder from outside D...

Страница 13: ... backing screen are clean Place the filter sheet on the backing screen taking care to ensure that it is centralized The top cover is polarized and fitted on the top of sampler with the help of two non sliding wing nuts Align the mounting slots to the eyebolts and gently lower it on the filter adaptor pressing down the filter paper Avoid repositioning the cover since it is likely to shift the filte...

Страница 14: ...as 1254 hours and 23 minutes Put the Main Power Switch on the Panel of the instrument ON The Blower motor will come ON with an audible sound The manometer will indicate the flow rate of air through the instrument Allow the flow rate to stabilize for a few minutes and note down the flow rate in Cubic Meters per minute Close the door and leave the Sampler operating for the desired sampling duration ...

Страница 15: ...a safe container for transit to the lab for analysis The procedure above describes the steps to be taken for a manually supervised operation of the instrument A small degree of automation to facilitate startup and shut down of the instrument is available via the Timer provided on the front panel ...

Страница 16: ...ndition of belt slack should be checked If belt is loose than shift the motor with the help of mounting bolts and adjust the tension so that the belt slack remains in normal safe range If noise level increases with time it is often because of a loose belt Due to the high Blower RPM some amount of belt wear is normal and can be expected During belt inspection if you observe excessive shredding of t...

Страница 17: ...ps given below Observe the polarity of the PVC pipes connecting the manometer to the pressure taps of the Orifice Plate The glass tube of the manometer is connected to the lower nozzle while the manometer tank is connected to the upper nozzle of the filter adaptor casting Remove both the PVC pipes from the orifice plate pressure taps Hold the pipe from the glass tube pointing downwards and away fr...

Страница 18: ...n removing the tank assembly and upper coupling the tube support will open out and the manometer tube will come out Check that the seal rings rubber O rings in the upper coupling and tank opening are in place Apply a little silicone grease on the ends of the Manometer tube and insert one end firmly in the tank assembly and the other into the upper coupling Place the tube support reflector behind t...

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