MSA Dual Zone TriGas Monitoring System
Hydrogen sulfide and methane can build up in a wet well, making for a dangerous and explosive environment for workers and equipment.
The National Fire Protection Code for wastewater (NFPA 820) requires these spaces to be monitored with suitable equipment. Many workers are provided with portable monitors, but this doesn’t eliminate the need for continuous monitoring. Detectors are commonly placed directly in the area to be monitored. A better approach is to continuously extract air from the area and analyze the concentration in the safe environment. Highly visible LED Alarms on the MSA X5000 will alert workers to the hazard before entering the confined space. Additionally, these alarms can be transmitted via the PLC to SCADA, cloud, cell phone, or external signaling beacons.
MSA’s TruCal technology automatically tests the H2S sensor response, which extends the intervals between calibrations and reduces maintenance.
The Adaptive Environmental Compensation technology increases resolution for H2S and unique non-consuming 02 sensor design, extending sensor life from 2 to 5 years for both H2S and O2 sensors.
Longer calibration intervals and sensor life translates into lower operating costs. For CH4, we recommend using infrared absorbance sensor technology which has low maintenance and a 10-year sensor life.