Indian
Suppliers
Suppliers
Polltech Instruments
Category : Scientific Instrument & Supplies
Salient Features
True iso-kinetic sampling
Automatic computation of online linear velocity & iso- kinetic flow rate
Ideal nozzle size computation
Automatic control of flow to iso-kinetic conditions
Computation of Number of traverse points and their distances
On-line condenser temperature measurement and moisture correction
Automatic recording of data
Compact, lightweight, portable & battery operated
Applications
Ideally designed for stack emission monitoring Model PEM-SMS-4 Stack Monitoring System is a highly advanced automatic iso-kinetic sampler, which facilitates the measurement of Particulate Matter (PM) moisture and gaseous pollutants in stacks and ducts. It not only measures stack gas velocity but also continuously computes and regulates the sampling flow rate to comply with iso-kinetic sampling conditions through out the sampling.
Principle of Operation
PEM-SMS-4 implements the various basic methodologies developed by US EPA for measurement of Stack Gas Velocity, Moisture content and for iso-kinetic sampling of PM. Stack gas velocity computation is carried out based on the of pitot tube dp, flue gas temperature and gas composition and barometric pressure. While the pitot tube dp and flue gas temperature are retrieved from on-line measurement, gas composition and moisture contents are input manually through the key-board and display, serving as man-machine interface. The system recommends the ideal nozzle size, number of traverse points & their distances. It then computes the iso-kinetic set point, which is displayed and utilized for continuous control of the sampling flow rate through a proportional control valve. PEM-SMS-4 is programmable to select the required mode of sampling for particulate, moisture or gaseous sampling. The system provides for constant flow mode for particulates for use in cyclones.
Solid state sensors are used for measurement of Pitot Tube dp, orifice dp and inlet pressure. Temperature sensors measure stack gas temperature, condenser temperature and orifice gas temperature.
|
CONTROL MODULE |
|
|
DISPLAY |
32 character large LCD display module |
|
CONTROL SYSTEM |
Microprocessor based system |
|
KEYS |
10 Nos. ( PARA., PROG. / RUN, RESULT - START / ?, STOP / ? , ? ? & ENTER ) |
|
DATA PRINTING |
All measured parameters, all computed parameters and all set control parameters |
|
|
Parallel printer port for dot matrix or any other centronics compatible parallel printer. |
|
CABINET |
High quality light weight aluminium box with hinges & lock |
|
POWER |
Rechargeable Li-ion batteries |
Technical Specification
|
PARAMETERS MEASURED & DISPLAYED |
PARAMETERS MEASURED & DISPLAYED |
||
|
Parameter |
Range |
Parameter |
Range |
|
Stack gas Temperature |
Ambient to 600C or 12000C |
Stack gas Velocity |
0 to 50M / sec |
|
Pitot Tube dp |
0 to 200.0 mm WC |
Iso-kinetic Sampling Flow Rate |
10-100LPM |
|
Stack gas / orifice inlet pressure |
0 to 760- mm Hg |
Sampling Flow Rate |
10-100LPM |
|
Orifice meter dp |
0 to 200.0 mm WC |
Total Volume Collected (STP) |
0 to 9999 litres |
|
Orifice meter Gas Temp. |
0 to 600C |
Gaseous Flow Rate |
~1 to ~2 LPM |
|
Cooled Gas outlet Temp. |
0 to 550C |
Gaseous Volume |
0 to 999 litres |
|
|
|
Total sampling Time |
0 to 999 mts |
|
|
|
Leak rate |
0-9.9LPM |