940-9 Portable Continuous Air Monitor

Name: 940-9 Portable Continuous Air Monitor
Brand: Fluke Biomedical

Are you looking for a replacement for your Eberline PING or SPING Radiation Monitoring System? Replace it with a field proven 940-1 fixed or 940-9 portable Digital Radiation Monitoring System.

Specifications

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Product Details

940-9 Air Monitor

Overview

Key Features

Universal Digital Ratemeter with dynamic range up to 10⁷ CPM
Scintillation type detectors
Rugged construction for ease of maintenance
Positive displacement type pumping system
Automatic pressure compensation for gas density
Automatic purge of sampling system

Introduction

The Code of Federal Regulations requires assurance that radioactive materials within gaseous effluents do not exceed maximum permissible concentrations (MPC) as set forth in the United States Nuclear Regulatory Commission (USNRC) radiation protection standards. This simply means that any effluent that could possibly contain radioactivity must be monitored. Besides the legal implications, sound industrial hygiene practices require that personnel be protected against the possibility of exposure to excessive radioactivity from any source. Off-line gas monitors are frequently used in conjunction with particulate monitors. This is particularly the case with a stack or duct where effluent is released into the environment. Used in this manner, the particulate monitor serves as a pre-filter for the gaseous monitor and also as a monitor of airborne radioactive particulates. Where an off-line gas monitor is used independently, without the aid of a particulate monitor, a separate filter assembly is installed to prevent contaminated particulate buildup inside the sensitive volume. The off-line effluent monitor incorporates its own pumping system to insure a positive displacement of the effluents being monitored. Off-line effluent monitoring is normally utilized where optimum geometry is desired to gain maximum sensitivity. Scintillation detectors are used because of their sensitivity and reliability.

Mounted on heavy-duty casters to enhance mobility
Self-contained portable air monitor
Compatible with Model 943 Series detectors and Model 942A Series or Model 960 Series electronics

Applications

The Model 940-9 provides all of the functions of the Model 940-1 Off-Line Airborne Effluent Monitor, in a portable configuration. The detector output signal is transmitted to the Universal Digital Ratemeter. The particulate ratemeter displays gross particulate counts, iodines are absorbed in an easily removable cartridge, and the gas ratemeter displays gross noble gas counts, compensated for changes in pressure at the volume chamber. These ratemeters also provide output alarm contacts for Alert, High Radiation, Channel Fail, and when required, Rate Of Rise for fixed filter application. A Low Flow alarm is also available for the sample stream. Check source actuation is manual from the ratemeter, with alarms muted when in the check source mode.

Models