Isokinetic Source Sampling System  Stationary source sampling is conducted to evaluate gas stream emissions to the atmosphere from stacks, ducts or process exhausts. A pollutant’s concentration is measured by extracting a known volume from the gas stream and determining the average stack gas flow rate over the sampling period. The mass emission rate of each constituent then may be calculated. In the area of Stack Sampling Methods, there are 3 major categories of testing: Isokinetic Reference Methods, Instrumental Reference Methods (IRM), and Gaseous Sampling (which includes sampling for mercury).  Obtaining a representative sample of particulate matter from a gas stream requires a more complex procedure than sampling only for gases. Particles can be either liquid droplets or solids. Representative sampling requires that the velocity of the gas/particle mixture passing into the sampling nozzle must be as close as possible to the velocity of the gas stream in the stack or duct. When the velocities are the same, the sampling is isokinetic. During the entire sampling period, the stack velocity must be monitored constantly and the pumping rate adjusted so that the nozzle intake velocity matches as closely as possible the velocity of the in-stack gas/particle mixture. In addition, the pumping rate needs to be adjusted for differences in pressure, temperature and moisture between the stack conditions and the pump or meter console. The exact steps to conduct this type of sampling are spelled out in U.S. EPA Reference Method 5. This method also requires knowledge of U.S. EPA References Methods 1 through 4. The Apex isokinetic method 5 sampling system offers modular components that can be arranged and re-arranged to perform multiple U.S. EPA Reference Methods. Select from manual, digital or automated meter consoles, as well as a wide range of heated filter and impinger boxes, heavy-wall glassware with unground o-ring ball joints, probes built to customer specified lengths, new designs for umbilical cords, and custom modifications to meet your unique needs.    

The DSL-330 Particulate Monitor is an optical instrument designed to measure the concentration of dust or particulate matter in an exhaust gas passing through a duct, stack or flue. The DSL-330 uses the double pass light transmission measurement technique, with a folded beam Transceiver/Reflector arrangement. A light beam emitted from the Transceiver (TRX) passes across the duct, stack or flue to a Reflector, which then returns the light to the Transceiver where the intensity of the received light is measured. Increased particulate density in the stack gas attenuates the transmitted light and causes the intensity of the received light to fall. When calibrated against standard reference measurements, this reduction in intensity can be used to calculate the particulate concentration and present a reading in mg/m³. FEATURES In situ measurement directly in exhaust gas flow Measurement reading as particulate as mg/m³ Modulated green LED source for long lifetime stability and immunity to ambient light Rugged 316 stainless steel construction In-situ zero and calibration check facility Choice of interface options enabling easy integration Free utility software for PC based set-up, control and data logging Optional Operator Interface with different mounting configurations BENEFITS Simpler installation than single pass opacity monitors Better accuracy over shorter path lengths than single pass opacity monitors Rugged design with no moving parts so low maintenance Latched head and lid design to enable ease of access for installation and maintenance  

An air sampler designed designed for monitoring particulate & gaseous pollutants in Ambient air & work station.                                                                           

The E Instruments portable emissions analyzers are ideal for emissions monitoring, maintenance and tuning of combustion processes including boilers, burners, gas & diesel engines, turbines, furnaces, kilns, heaters, incinerators, and laboratory analysis. Each emissions analyzer is built with with a rugged and easy to use design for accurate and reliable measurements.  

Isokinetic Source Sampling System  Stationary source sampling is conducted to evaluate gas stream emissions to the atmosphere from stacks, ducts or process exhausts. A pollutant’s concentration is measured by extracting a known volume from the gas stream and determining the average stack gas flow rate over the sampling period. The mass emission rate of each constituent then may be calculated. In the area of Stack Sampling Methods, there are 3 major categories of testing: Isokinetic Reference Methods, Instrumental Reference Methods (IRM), and Gaseous Sampling (which includes sampling for mercury).  Obtaining a representative sample of particulate matter from a gas stream requires a more complex procedure than sampling only for gases. Particles can be either liquid droplets or solids. Representative sampling requires that the velocity of the gas/particle mixture passing into the sampling nozzle must be as close as possible to the velocity of the gas stream in the stack or duct. When the velocities are the same, the sampling is isokinetic. During the entire sampling period, the stack velocity must be monitored constantly and the pumping rate adjusted so that the nozzle intake velocity matches as closely as possible the velocity of the in-stack gas/particle mixture. In addition, the pumping rate needs to be adjusted for differences in pressure, temperature and moisture between the stack conditions and the pump or meter console. The exact steps to conduct this type of sampling are spelled out in U.S. EPA Reference Method 5. This method also requires knowledge of U.S. EPA References Methods 1 through 4. The Apex isokinetic method 5 sampling system offers modular components that can be arranged and re-arranged to perform multiple U.S. EPA Reference Methods. Select from manual, digital or automated meter consoles, as well as a wide range of heated filter and impinger boxes, heavy-wall glassware with unground o-ring ball joints, probes built to customer specified lengths, new designs for umbilical cords, and custom modifications to meet your unique needs.    

The DSL-330 Particulate Monitor is an optical instrument designed to measure the concentration of dust or particulate matter in an exhaust gas passing through a duct, stack or flue. The DSL-330 uses the double pass light transmission measurement technique, with a folded beam Transceiver/Reflector arrangement. A light beam emitted from the Transceiver (TRX) passes across the duct, stack or flue to a Reflector, which then returns the light to the Transceiver where the intensity of the received light is measured. Increased particulate density in the stack gas attenuates the transmitted light and causes the intensity of the received light to fall. When calibrated against standard reference measurements, this reduction in intensity can be used to calculate the particulate concentration and present a reading in mg/m³. FEATURES In situ measurement directly in exhaust gas flow Measurement reading as particulate as mg/m³ Modulated green LED source for long lifetime stability and immunity to ambient light Rugged 316 stainless steel construction In-situ zero and calibration check facility Choice of interface options enabling easy integration Free utility software for PC based set-up, control and data logging Optional Operator Interface with different mounting configurations BENEFITS Simpler installation than single pass opacity monitors Better accuracy over shorter path lengths than single pass opacity monitors Rugged design with no moving parts so low maintenance Latched head and lid design to enable ease of access for installation and maintenance  

An air sampler designed designed for monitoring particulate & gaseous pollutants in Ambient air & work station.                                                                           

The E Instruments portable emissions analyzers are ideal for emissions monitoring, maintenance and tuning of combustion processes including boilers, burners, gas & diesel engines, turbines, furnaces, kilns, heaters, incinerators, and laboratory analysis. Each emissions analyzer is built with with a rugged and easy to use design for accurate and reliable measurements.