The 1405 TEOM Continuous Ambient Particulate Monitor measures PM-10, PM-2.5, PM-1, or TSP mass concentrations and consists of a TEOM mass sensor and control unit in a network ready configuration. The TEOM 1405 distinguishes itself from other PM measurement methods by utilizing a direct mass measurement that is not subject to measurement uncertainties found in other surrogate technologies. It provides a self-referencing, NIST traceable direct mass measurement.
Also available in Dichotomous format measuring BOTH PM2.5 and PM10 simultaneously by seperation of course and fine fractions. See 1405 D.
Key Features:
Utilizes TEOM technology to provide direct mass measurements
Designed to meet US and International Particulate Monitoring Regulations
Compact stand alone unit which is network-ready and configurable to measure PM-10, PM-2.5, PM-1 or TSP concentrations
Touch-screen GUI interface quickly and intuitively accesses system status, TEOM data, settings, and instrument conditions
A service screen provides access to software wizards which walk the user through calibration and maintenance procedures with detailed instructions and pictures
Standard System Configuration
TEOM sensor and control unit housed in a single compact enclosure
Menu-driven software for user interaction via a touch-screen display
ActiVol flow control using Automatic Mass Flow Controller(s) and supplied Ambient Temperature and Ambient Pressure Sensors
Consumables for average first year operation (ambient)
ePort software for local or remote communication, USB port for automated download
System configurations include PM-10, PM-2.5, PM-1, and TSP
Includes:
Connecting and interface cables and vacuum pump
Consumables for average first year operation (ambient)
Pallflex TX40 Filter, 13mm effective diameter
Compliance: ETL and CE compliant
Certifications: U.S. EPA Equivalent PM-10 Monitor: EQPM-1090-079, EU Equivaelent for PM10 using VCM (Volatile Correction Model)
Recommended for:
Air quality monitoring networks, including background sites
Special studies and supersites
Routine input for air quality index
In and around industrial and material handling facilities
Remediation projects (Superfund, hazardous waste)
Indoor air, exposure chamber, and industrial hygiene measurements
The 1405-F TEOM FDMS Monitor measures PM-10, PM Fine (PM-2.5) and PM-1 mass concentrations. Consisting of a Filter Dynamics Measurement System (FDMS) and TEOM mass sensor housed in a single-cabinet and network-ready configuration that includes control system with touch-screen user interface.
The TEOM 1405-F distinguishes itself from other PM measurement methods by utilizing a direct mass measurement that is not subject to measurement uncertainties found in surrogate techniques. It provides a self-referencing, NIST-traceable true mass measurement.
Also available in Dichotomous format measuring BOTH PM2.5 and PM10 simultaneously by seperation of course and fine fractions. See 1405 DF.
Key Features:
Utilizes TEOM technology to provide direct mass measurements and FDMS to account for volatile and nonvolatile PM fractions
Designed to meet U.S. and International Particulate Monitoring Regulations
Touch-screen GUI interface quickly and intuitively accesses system status, TEOM data, settings, and instrument conditions
A service screen provides access to software wizards which walk the user through calibration and maintenance procedures with detailed instructions and pictures
Standard System Configuration:
TEOM sensor and control unit housed in a single compact enclosure
Menu-driven software for user interaction via a touch-screen display
ActiVol flow control using Automatic Mass Flow Controller(s) and supplied Ambient Temperature and Ambient Pressure Sensors
ePort software for local or remote communication, USB port for automated download System configurations include PM-10 and PM-2.5
Data Averaging
Real-time Mass Concentration Average: One hour rolling average updated every six minutes
Long-Term Averaging: 1, 8, 24 hr.
Sample Flow
Activol flow control system uses the mass flow sensors and the measured ambient temperature and pressure to maintain constant volumetric flow rates.
Sample Conditioner Filter: 47mm diameter housed in an FRM-style molded filter cassette, maintained at 4°C; suitable for collecting and archiving time-integrated PM samples for subsequent laboratory analysis
Sample Conditioning
Nafion dryer lowers the main flow relative humidity and allows for mass transducer operation a 5°C over the peak air monitoring station temperature
Purge Filter Conditioner contains a heat exchanger that maintains the temperature of the main flow and particle filter at 4°C to efficiently filter the volatile and nonvolatile PM in the sample
Includes:
Connecting and interface cables and vacuum pump
Consumables for average first year operation (ambient) excluding pump & FDMS dryer refurbishment parts
Pallflex TX40 Filter, 13mm effective diameter
Compliance: ETL and CE Compliant
Certifications: U.S. EPA Equivalent PM-2.5 Monitor ; EU Equivalent for PM10 and PM2.5 ; MCERTS UK Equivalent for PM10 and PM2.5
Recommended for:
Air quality monitoring networks, including background sites
Special studies and supersites
Routine input for air quality index
In and around industrial and material handling facilities
Remediation projects (Superfund, hazardous waste)
Indoor air, exposure chamber, and industrial hygiene measurements
TEOM-FDMS Resources Page
TEOM - FDMS is the ONLY system which provides information about the nature and concentration of airborne particulate matter and has been shown to meet the requirements of the European Method for Determining Equivalence for Particulate Matter. TEOM-FDMS agrees with the European Gravimetric Standard Method and provides results which are both accurate and precise without the use of a 'correction factor' for both PM10 and PM2.5.
The TEOM FDMS was the ONLY system shown to demonstrate Equivalence in UK government tests and is used throughout the UK's National Air Quality Network for both PM10 and PM2.5 Monitoring. Below is a table of resources to provide support and better understanding of the TEOM - FDMS system.
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The New Improved TEOM FDMS Dryer (CB Series)
The original ‘B series’ dryer supplied with the FDMS was based on a standard tubular dryer from Permapure Corporation TM and was replaced by a ‘flat plate’ ‘C series’ dryer by Rupprecht & Patashnick Company (now Thermo Fisher Scientific Corp). The ‘C series’ dryers have been reported as being more variable in their performance than the ‘B series’ and some users have reported differences in the resultant mass concentrations when comparing the two types. With this in mind Air Monitors in association with Permapure Corporation set out to design a new dryer which would perform as reliably as the earlier ‘B series’. It also provides more efficient drying, equivalent results to the gravimetric reference methods and provides improved batch to batch variability improving instrument to instrument precision, which is essential for network monitoring operations. In addition the new dryer is easier to maintain and can be exchanged simply in the field at a lower replacement cost than the B or C series. The CB Series dryer is exclusive to Air Monitors and can be purchased through your local TEOM-FDMS or Europa Environmental distributor.
What’s different about the CB Dryer?
The CB Dryer has been designed from the beginning with particulate matter in mind. The dryer is made from a stainless steel shell with a multi-core tubular drying bundle which is designed to minimise loss of particulate matter during the drying process. The system has been designed to perform such that the FDMS should provide data equivalent to the reference gravimetric methods currently used in the USA and Europe. The dryer can also be maintained and replaced simply in the field contrary to the C series dryer which requires the user to exchange it with the manufacturer. The fittings and seals have been simplified and the dryer tubes arranged to maximise drying efficiency and reduce possible particulate losses. and The CB series dryer provides similar drying efficiency to the C series dryer but has demonstrated superior batch to batch consistency leading to improved instrument to instrument precision in mass measurements. Backed by Permapure quality and experience and Air Monitors application and field expertise the dryer provides a higher degree of accuracy and precision for TEOM—FDMS measurements.
Is the CB dryer compatible with all FDMS Systems?
The CB series dryer can be fitted to all new and existing B series and C series FDMS units however an additional set of adapters is required to fit the dryer to the B series FDMS. A small modification is required to the top of the FDMS box which can be done by the user on site, with the appropriate tools. The existing temperature and humidity sensors from the B or C type dryers can be used without modification on the CB series. A new set of purge air tube fittings is supplied with each CB Dryer Kit as is a full set of illustrated instructions.
What is an FDMS?
The FDMS is a self referencing airborne particulate monitor based on TEOM technology. The TEOM uses first principle physics to measure the mass of particles collected on a filter. The FDMS measures the core and volatile fractions of the collected mass by using a self referencing technique to measure the effects of these materials as they collect on the filter. Core particulate matter has an additive effect whereas semi volatile materials can both add mass as they arrive on the filter and can later lose mass as they volatalise. Gases and vapours (including water vapour) can also have both positive and negative effects on the mass of the filter and collected PM over time. The FDMS is able to monitor and report these changes (or filter dynamics) as they occur and provide a more accurate and 'true' measurement of airborne pariculate mass concentration. Back to top
What does FDMS stand for?
FDMS is an ancronym for Filter Dynamics Measurement System. This is a registered trade mark of Thermo Electron corporation (RP Products) Air Monitors are the UK official distributor of these products. Back to top
Does this mean my existing TEOM monitor is no good?
NO, The TEOM monitor has always given consistent measurements of airborne particulate mass however as the basic model is heated it can drive off volatile substances (such as ammonium nitrate) which are (at least partially) collected by the European standard samplers leading to a difference in the reported mass concentration. DEFRA have stated that they regard the TEOM as acceptable for use in Local Authority Air Quality Monitoring but do reccomend that whereever possible you should endevour to use monitors that are fully equivelent to the European Standards such as FDMS. You can also upgrade most existing TEOM monitors to FDMS. Back to top
Can I upgrade my existing TEOM monitor and what will it cost?
Most existing TEOM monitors can be upgraded to FDMS. All Model 1400AB units can be upgraded but some require a flow controller upgrade also to allow for the different flow configuration. If you are unsure if your monitor is upgradable then please complete the form on the FDMS section of this website or refer to the technical help document on the subject in the resources section. The cost will normally be between £6,000 and £7,000 for the upgrade including installation but excluding VAT. Back to top
What size is the FDMS and will my monitoring site be able to accomodate it?
The FDMS does add height to the existing TEOM monitor and you may have to lower the position of the existing sensor unit in your monitoring site. (See FDMS schematic and dimensions document in resources area)This is usually done by fitting a lower shelf to support the unit or placing it on a plinth on the floor. The existing inlet and roof flange should be reusable but we suggest you have a site survey before going ahead. Air Monitors offer this service free of charge to customers upgrading with us. Back to top
What about continuity of my data set with my existing TEOM?
The FDMS gives both core PM mass (base) and total PM mass (base + reference). The base measurment is very similar to the measurement of PM with the basic TEOM system and therefor a certain continuity of monitoring data can be expected as advised by DEFRA. Back to top
Can I trade in my old TEOM or other monitor for a new FDMS system?
YES. We offer a generous trade in for most old PM monitors (not just TEOM's) and will credit any offer agreed against the cost of a new TEOM-FDMS system. Back to top
Can I use any other type of monitor to measure PM ?
YES, The Partisol Model 2025 sampler also passed the equivalence tests. However this is a garvimetric sampler and does not provide real time data like the FDMS. The filters have to be sent for analysis in a laboratory and the sampler requires more attention than the FDMS often making it a more costly option in the long run. Other automated monitors also passed the test however to use them you also need to apply either an offset factor a slope factor or both. The FDMS is the ONLY monitor which requires no factors for either PM10 or PM2.5 used anywhere in the UK. Back to top
How do I tell if my TEOM has 1st or 2nd generation flow controllers?
The first generation flow controllers make a clicking sound in operation which the 2nd generation flow controllers do not. Please refer to the guide "FDMS Upgrades - How do I tell what I need?" in our FDMS Resources Section Back to top
Can I buy FDMS upgrades from anyone other than Air Monitors ?
YES. Air Monitors is the exclusive distributor of the TEOM - FDMS in the UK. However you can buy the system from a number of sub suppliers who in turn buy from us , however we have many years experience in the development, uply, installation and support of the system and can guarantee to provide you with a trouble free service from start to finish. Back to top
Will FDMS affect my data logging system ?
The FDMS communicates in a similar manner to the TEOM and therefor if you are currently logging data from the TEOM the FDMS will operate in much the same way. There will be more data and the time basis is slightly different as the system has effectivly two channels but this is easily managed by most software systems. If you wish to upgrade then Air Monitors offers AQWEB which is fully compatable with the FDMS and most gas monitors allowing fast data logging and management over an internet connection. It is not expensive and can save you money on communications and reduce visits to site. Back to top
Can I measure Black Carbon with the TEOM - FDMS
YES. The TEOM FDMS can be fitted with an optional Aethalometer system allowing the simultaneous measurement of black smoke (black carbon). Back to top
Can I get a copy of the full DEFRA PM Monitoring equivalence test report?
Yes this is available to download at the above link and at www.airquality.co.uk run by AEA NETCEN. Back to top
Where can I get independant advice on FDMS and PM monitoring?
There are several helplines (funded by DEFRA and the devolved administrations) available to local authorities and other air quality professionals at www.airquality.co.uk run by NETCEN, and at www.uwe.ac.uk/aqm/review/mfaqpm.html run by University of West England. Back to top
Can I compare the specifications of the FDMS and other PM monitors?
YES. In our FDMS resources section you can download a chart of manufacturers published data on most common PM monitors. Back to top
What Monitors are used in the UK National Network?
The TEOM and TEOM-FDMS arethe most prevalent monitors in the AURN networks and DEFRA has recently invested in additional FDMS systems. Back to top
