Features Simultaneous control of alpha and beta contamination with automatic background subtraction Large 200 cm2 detection area gas flow probe Rugged entrance double grid Visual and audible alarms Separate displays of alpha and beta counting rates CABV 31 Alpha and Beta Contamination Monitors for Clothes and Floors Description The CABV 31 allows for a fast and accurate monitoring of personnel clothes and objects at controlled area boundary. The CABV 31 is generally installed at a stationary location. The instrument is composed of three sub-units: ■ A case including measurement electronics, two alpha and beta both digital and graphic displays, good operation indicator lights and visual and audible contamination alarms. ■ A disconnectable keyboard including a LCD display for entering parameters and controlling the system; the user-friendly dedicated software makes these operations very easy. A measurement probe equipped with a 200 cm2 gas flow proportional ® detector fitted with a 0.8 mg/cm2 Mylar  window. Specifications NUCLEAR INSTRUMENT – Meets IEC 60325 recommendations. DETECTOR – Gas flow proportional detector, DPC 200-1. –  Detector area: 200 cm2. –  Window thickness: 0.8 mg/cm2. –  Stainless steel grid transparency: 49%. ■ ■ MEASUREMENT TIME – 2 s. GAMMA SENSITIVITY – 40 c/s in b channel per µSv/h (137Cs). Typical efficiency over 2p (%) Guaranteed efficiency over 2p (%) Response to activity (c/s)/Bq MDA: Background = 0.02 c/s (alpha) and 6.0 c/s (beta), measured in a 0.1 µGy/h ambience. Measuring time on source = 2 sec. Statistic: false alarm = 5% and non detection = 5%. Nuclear Measurement Solutions for Safety, Security and the Environment 

CABV 31 Alpha and Beta Contamination Monitors for Clothes and Floors ERGONOMICS DISPLAY – Red light “ALPHA CONTAMINATED”, red light “BETA CONTAMINATED”. ■ Audible alarm in case of contamination; audible bip for each α pulse. ■ Both digital and graphic fast display (2 s measurement time) of both α counting rate and β counting rate with background subtraction. ■ REMOTE ALARM OUTPUT – Optional, for remote contamination alarm, and out of order alarm via dry contacts. ■ OPERATION STATUS – Three light indicators: green “OPERATING”, red “NO OPERATING”; yellow “WAIT”. ■ Display of gas flow, high voltage,...