LUDLUM provides data loggers with in-built & optional data logging capability that are designed to be user-friendly with various modes of operation (RATE, MAX, INTG, and COUNT) for detection of alpha, beta, gamma, or neutron radiation survey.
Data Loggers

Model 3005
Internal Energy-Compensated GM Detector Splash-Resistant Construction for Outdoor Uses Range: 0.001 to 50 mSv/h (0.1 to 5000 mR/hr)

Model 3019
Digital microR Survey Meter Very Sensitive Internal CsI Detector Splash-Resistant Construction for Outdoor Use

Model 2350-1
5-Range Digital Meter Stores 1000 Data Points Supports 16 Detector Setups Supports GM, Proportional & Scintillator Detectors

Model 2360
4-Range Analog Meter with Digital Scaler LCD Simultaneous Alpha & Beta Measurements with Audio Discrimination Logs 550 Data Points