High-precision aerosol monitors

The aerosol monitors LB 9140 and LB 9150 are used to measure airborne alpha/beta particles under the influence of natural radioactivity (radon) and fluctuating gamma background.

The display is equipped with self-monitoring functions that continuously monitor the functionality and alarm status of the monitor. The system is quiet and vibration-free and has the advantage of being maintenance-free and durable.

• Real-time continuous monitoring.
• Radon compensation: pseudo-incidence method for LB 9140, spectroscopic selection method for LB 9150.
• Removable monitor with small footprint.
• Modern data acquisition system: data logger with  7” color touch panel and intelligent digital input/output module.
• Si-CAM detector unit 600 mm² for simultaneous separate alpha/beta measurement on a flat dusting area of 25 x 25 mm².

• Fixed filter, quasi-fixed filter or moving filter modes.
• Efficient fixed filter operation: Seamless fixed filter operation with simple filter change option.
• Continuous filter operation with 4 selectable speeds from 5 to 15 mm/h, warning before paper end.
• Step filter operation optionally possible.
• Low-noise and low-maintenance pump unit: External pump unit with low noise level and low maintenance, air flow rate of approx. 3 m³/h.
• Calculations according to DIN EN ISO 11929-1.

For more details, please refer to Data Sheet