Digital Survey Meter - Model 30
Introduction

The Ludlum Model 30 is a versatile and lightweight display unit intended for use with with an external detector for alpha, beta, or gamma radiation survey. Three modes of operation - RATE, MAX, and COUNT - are available for the user. Measurements can be collected in two sets of units (primary and secondary) for RATE and MAX modes in cps, Bq, dpm, R/hr, rem, or Sv/h units.
 
The user can switch between two sets of chosen units by simply pressing the Units button. An internal switch is used to enable or disable the front-panel setup feature to protect desired settings from inadvertent modification. Setup is also available via software available from Ludlum Measurements.
 
This instrument features a large, easily-readable LCD (liquid crystal display) that may be rotated for maximum ease of use for the operator. Other features are a piercing audio warning tone and easy, intuitive, user-friendly design. Splash-resistant construction allows the Model 30 to be used in outdoor environments. The unit's body is constructed of lightweight, durable, high-impact plastic.

The Model 30 is shipped ready for use with batteries and calibration certificate.