Continuous Air Monitor

Category: Characterization > Monitors > Radiation Monitors
Reference # : Model No :

Model 334AB is designed to function as a portable workplace monitor or as a continuous air monitor (CAM) for emergency response situations. The compact and low-weight instrument has an integrated LCD and touchscreen provides information on instrument status and readings during operation. The estimated dose of the isotope(s) of interest and the instrument status are displayed at all times. A display window below may be switched from showing historical readings and battery status or display the current spectrum.

An ion-implanted silicon detector and 1024-channel multi-channel analyzer feeds data to the embedded processor board. Operations include beta detection and alpha spectral analysis for radon compensation. Acquired data may be saved in the instrument’s internal memory, or alternately may be written to an SD card for later retrieval and review. It is stored in comma-separated-variable (*.csv) format that is recognized by most spreadsheet and database software.

Benefits

Easy Setup and Use with Integrated LCD and Touch Screen Display
English or SI Units of Measurement
Acute and Chronic Dose Measurements
Concentration Measurement
Flow Logging Measurements
Significantly Reduced False Alarms Using Peak Shape Fitting Capability
8-Hour Battery Life
Portable Workplace Monitor or Portable CAM for Emergency Response Assessments

Limitations

Comments

Specifications

SAMPLING HEAD and FLOW:
Detector: solid-state ion-implanted silicon (450 mm² active area, 300 µm depletion)
Pump: diaphragm-type, 6.0 LPM (typical)
Filter: 37 mm Speclon™ 1.5 µm PTFE membrane or compatible 37 mm PTFE filter (25 mm collection area)

DATA ANALYSIS:
Single beta channel, upper/lower discriminator setting
Alpha MCA: 1024-channel ADC binned to 256 channel alpha spectrum
Radon compensation plus fixed background subtraction
Acute and Chronic window sensitivities, plus net count rate alarm; user-adjustable from 120 seconds to 240 minutes
Max Count Rate: 500,000 cpm (beta + alpha) source response check diagnostic calibration: efficiency calibration requires electro-plated stainless steel source, 37 mm diameter with 25 mm active area
alpha energy range: 1.0–10.0 MeV
beta efficiency: energy-dependent (36Cl efficiency, 17% typical)

PHYSICAL:
Size (with light stack lowered): 28 x 33 x 13 cm (11 x 13 x 5 in.) (H x W x D)
Weight: 3.8 kg (8.3 lb)
Temperature Range: -18 to 50 °C (0 to 122 °F)
Humidity: 5 % to 100% (non-condensing)

Pictures

Air Monitor

Videos