Model EM919 -Emissions Monitor

Baltec Australia’s EM919 Emission Monitor uses state-of-the art technology to monitor the performance of pollution control equipment on a real time basis. The EM919 was developed to withstand adverse outdoor site conditions. It measures emissions with high accuracy for a range of particulate flue gas concentrations.

The EM919 monitors emissions using the opacity principle, whereby dust particle concentrations are determined as a function of their extinction of a light source. Until now, the practical application of the opacity principle was hindered by distortions due to the effects of ambient light, static dust, misalignments and moving dust while monitoring. The EM919 accurately incorporates these effects into its calculations.

The EM919 employs the concept of ‘Maximum Potential Signal’ to ensure that accurate calibration is continuous throughout operation. The unit initially constructs a calibration graph that it then applies to future readings during continuous monitoring. It ensures that the instrument readings incorporate the following:

• LED tolerances
• Receiver tolerances
• Minor problems related to alignment
• Stack diameter

The EM919 offers three types of user interfaces:

1. The Low Level user interface comes with the basic module is in the form of 8 LED bar graph and a HEX switch that can select different program modes. Once the equipment is calibrated, the only interface that is required is for occasional diagnostics.
2. Mid Level or Operator Interface is offered in the form of a Hand Held Terminal that can be plugged in. This helps in the ‘On Site’ calibration and varying the alarm set points.
3. High Level or User Interface is offered in the form of a MODBUS connection to the plant DCS or a central computer. The Graphic User Interface and data logger can be used for data logging, diagnostics, calibration and VPN connection.