940-3 On-line (Snowplow) Monitor

The Model 940-3 On-Line (Snowplow) Monitor is an easily installed, liquid effluent monitor that clamps around a process line to be monitored.

Specifications

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Product Details

940-3 Snowplow Monitor

Overview

Key Features

Horizontal or vertical configurations
Hinged door for ease of detector replacement
Air purge for hazardous locations
Integral junction box for cable termination
High temperature gamma scintillation detectors available
Universal Digital Ratemeter or microprocessor based ratemeter with dynamic range up to10⁷ CPM
Sensitivity comparable to in-line type
NaI gamma scintillation detector for sensitivity and reliability
Ease of installation

Introduction

The Code of Federal Regulations requires assurance that radioactive materials within liquid 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 radiation from any source. Scintillation detectors are used because of their sensitivity and reliability.

On-line liquid monitor
Compatible with Model 943 Series detectors and Model 942A Series or Model 960 Series electronics
Non-Invasive to process line
Available for various pipe diameters

Additional Information

The detector measures gross gamma radiation in the process fluid, amplifies and shapes the pulse output from the photomultiplier tube and transmits the signal to the Universal Digital Ratemeter. The ratemeter may be locally mounted or remotely located up to 1500 feet. The ratemeter displays measured radiation in CPM. The ratemeter also provides output alarm contacts for Alert, High Radiation and Channel Fail. Check source actuation is manual from the ratemeter, with alarms muted when in the check source mode. The Model 940-3 assembly may be furnished with the optional cooling water jacket around the standard detector or with a high temperature gamma scintillation detector (up to 300ºF) for high temperature process liquid applications. The Snowplow monitor can be oriented either horizontally or vertically to accommodate plant process piping runs.

Models

Model Name	Model Part Number	Model Description
940-3		On-Line (Snowplow) Monitor

940-3 On-line (Snowplow) Monitor

Vertical Tabs

940-3

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Product Details

Introduction

Additional Information

940-3

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