EMS1304 Opacity Monitor

THE EMS1304 Opacity Monitor Is a High Performance Opacity Monitoring System with Double-Pass Transmissometer. It meets the EPA 40 CFR 60 appendix B, PS-1 and ASTM D 6216

High Performance Opacity Monitoring System with a Double-Pass Transmissometer does not have to mean complicated….

The Model 1304 uses field proven, time tested optics and circuitry that are simple yet accurate. Each monitor and all of its components are of the highest quality and are pre-tested at the factory to your site specifications. The simple to follow instructions will have your monitor ready for service in hours after mechanical and electrical installation has been completed.

EMS has taken the approach to design equipment with accuracy, maintenance and serviceability as the most important features. The EMS 1304 Opacity monitor is designed with state of the art modular packaging with serviceability in mind. A built-in TTL (through-the-lens) alignment system allows the alignment target to be viewed through a window on the transceiver. Adjustments to changes in alignment are provided by a 3 point alignment system which is integral to the air plenum. This insures optimum reliability while enabling the system to be easily serviced and maintained in the field by plant service personnel.

Large numeric and letter display show legends (programmable in English as well as other languages) for the values of user defined variables. Dual five inch tall bar graphs are used for instantaneous and average opacity. A third bar graph is dedicated to window dirt accumulation. Tactile feedback membrane push buttons allow operator interface through clearly defined legends with minimum number of keystrokes. The control unit performs all vital computations with resolution of 0.1% opacity (1mg/M3). EMS Model 1304 can provide an output correlated to either stack exit opacity or mg/m3. State of the art circuitry eliminates calibration problems due to component aging, temperature and line variations and light source aging. Outputs for recording or control are in a 4-20mA format with selectable ranges and averaging times. Display and outputs of alarms for opacity and fault diagnostics are also provided.

Key Features

• Digital display with selectable Instant opacity, average % opacity and time to next cal
• EPA required zero and span check can be performed automatically by internal clock, external initiation or manually on demand
• Standard EPA required Audit Test Kit
• Two large bar graph displays; one for instant opacity and one for average opacity
• Separate bar graph display for window dust
• Communications via MODBUS (RS-485)
• Sensor located service module with a digital display % correlated opacity, %T2, manual zero and span
• Standard 3-30 foot retro (longer distances available)
• Stack exit correlation
• Light source rated for 7 years