Low-Cost Hand & Foot Monitor - Model 3276 Hand & Foot Monitor
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Introduction

The Model 3276 is a versatile instrument that can be used for multiple radiation detection purposes. In this configuration the Model 3276 is connected to both a Model 44-25 Hand Monitor Detector and a Model 44-26 Foot Monitor Detector to monitor personnel for alpha, beta, and gamma contamination. An optional Model 44-9 Detector can also be included for frisking.

The instrument features a large backlit LCD (liquid crystal display), a piercing audio warning, and intuitive design. Radiation can be measured in several units and modes, including: count rate, exposure rate/dose, activity rate, integrated exposure/dose, time-averaged rates, and scaler counts. The unit body is made of lightweight, rugged aluminum. It is not intended for outdoor use and should be protected from splashing water.

Setup of the instrument is accomplished through the front-panel buttons, or through software available from Ludlum Measurements. The advanced user or administrator can set:

  • Calibration Constant
  • Dead Time Correction
  • Efficiency
  • High Voltage
  • Pulse Threshold
  • Detector Current Overload Threshold
  • Loss of Count Alarm Time
  • Primary and Secondary Units
  • Primary and Secondary Minimum and Maximum Displays
  • Primary and Secondary Unit Alarm Levels
  • Primary and Secondary Count Units
  • Primary and Secondary Count Units Minimum Displays
  • Primary and Secondary Count Alarm Levels
  • Response Time
  • Auto-Response Rate (Fast or Slow)
  • Available Operational Modes
  • Count Time
  • Auto Shutdown Time
  • Area or Frisker Mode
  • Sigma or Click Audio Mode

Front-panel setup can be disabled via the internal switch on the Model 3276 in order to protect settings from inadvertent changes. 

The unit is operated with a wall-mounted DC supply that provides 9 VDC to the instrument and has interchangeable prongs to operate on 100-250 VAC at 50–60 Hz in most areas of the world. Four alkaline "AA" batteries supply backup power for operation from -20 to 50 °C (-5 to 122 °F).