E-Sampler Dual Ambient Monitor/Sampler

The E-SAMPLER is rugged, highly portable and easy to use. The all aluminum enclosure is not only rugged but provides electronic stability by filtering potential RF interference. Set-up is a snap with the quick connect system used with the EX-905 tripod. For other mounting applications, holes are provided to fasten to any structure. Simply turning the monitor on will start sampling using the most recent parameters. The unit will continue to operate until user intervention or battery failure. Auto-Zero and Auto-Span ensure that the data collected will be of the highest quality. Both Zero and Span can be operated manually or individually programmed at varying time bases. The E-SAMPLER can also be configured for start/stop times, recording periods, averaging time and other parameters.

Optional Air Plus is a complete communications data collection and data reporting tool. This software supports cellular data modem, radio, or direct connection communication for data collection and generates summary reports and graphs from the recorded data. Comet software, included with each sampler, provides easy to use terminal access to the E-Sampler data.

The E-SAMPLER is a dual technology instrument that combines the unequaled real-time measurement of light scatter with the accuracy standard of filter methods. The simple filter loading process testifies to the seamless blending of both technologies. Filters can be extracted and replaced in less than one minute, and the filter medium can be selected based on laboratory analysis. Particulate loading on the filter does not reduce performance due to the MetOne actual flow control protocol. Ambient temperature and pressure are measured, and actual flow is calculated and controlled by the E-SAMPLER microprocessor independent of filter loading change.

The E-SAMPLER provides real-time particulate measurement through near-forward light scattering. An internal rotary vane pump draws air at 2 LPM into the sensing chamber, where it passes through visible laser light. Aerosols in the air scatter light in proportion to the particulate load in the air. The scattered light is collected by precise glass optics and focused on a PIN diode. Rugged state-of-the-art electronics measure the intensity of the focused light and output a signal to the CPU. The output is linear to concentrations greater than 65,000 ug/m3. Every E-SAMPLER is factory calibrated.

Each E-SAMPLER has two internal filters (not the 47mm Analysis Filter) to protect sensitive optics and prevent damage to the flow components. Both filters are accessible from the front panel. Coin slots enable these filters to be removed and checked or replaced without any tools. Filter life for both will exceed 1 year in the harshest of conditions. All E-SAMPLERS have purge air from the internal filters that continually curtain the optics. This purge air protection allows the E-SAMPLER to be used in adverse environments without performance degradation. Even in harsh conditions, the E-SAMPLER will operate to specifications for 2 years without the need for recalibration.