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Ludlum Model 2350-1

Radiation Scaler/Ratemeter/Data Logger

Introduction

Ludlum Model 2350-1 Radiation Data Logger ● Digital Radiation Ratemeter/Scaler/Data Logger

● Stores 1000 Data Points

● 5 Decade, Auto Ranging

● Large Digital Display, Alarms

● Overload Protection

● Wide Range High Voltage

● Stores 16 Detector Setups
● Supports GM, Proportional and Scintillation Detectors

The general purpose Model 2350-1 is Ludlum's most advanced radiation scaler/ratemeter/data logger, and is designed to satisfy a wide range of applications. The large backlit LCD presents bar graphs, digital readings, and logged data on an 8-line by 15-character display. Up to 1000 data points can be stored, along with the location, date/time stamp, detector, count mode, count time, logging mode, and sample number. Location code information can be input via an optional bar code reader. The 5-decade range is fully auto-ranging with a wide-range, high-voltage supply capable of supporting virtually any detector. Up to 16 detector setups can be stored internally to facilitate swapping probes in the field. A single channel analyzer allows selecting the energy range of interest, and alarms are available in both the ratemeter and scaler counting modes. The front panel is relatively simple with separate switches for instrument power, LCD backlight, and audio divide, an audio volume knob, and an alarm acknowledge/display scroll push button. Starting the scaler count cycle or logging data is accomplished by pressing the button located on the instrument handle. Other front-panel items are an RS-232 serial port and a wand port for connection to a bar code reader. The instrument housing is cast aluminum with separate battery compartment, and includes a metal carrying handle. The Model 2350-1 offers a robust, high quality, fully featured, handheld radiation measuring instrument designed to cover any application or measurement criteria you may ever need.

Specifications

PART NUMBER: 48-2751

INDICATED USE: radiation field analysis and data logging
COMPATIBLE RADIATION DETECTORS: GM, proportional, scintillation, stores up to 16 detector setups
DISPLAY: 8 line LCD display with 15 characters per line
BACKLIGHT: 2-position toggle switch to turn backlight ON or OFF
SCALER: 6-digit display
TIMER: used in conjunction with scaler. Count time can be set from 1 - 65,535 s in 1 s intervals
RATEMETER: digital ratemeter, corrected for dead time and calibration constant
CONNECTOR: series "C" type (others available)

TREND INDICATOR: 5-decade logarithmic bar graph
SCALE: can display in rem/hr, Sv/hr, R/hr, cpm, cps, dpm, dps, rad(r), Gray(G), C/kg, Ci/cm2, or Bq/cm2
INTEGRATED DOSE: counter provided to give total accumulated dose for up to 45 days (will display in same units as ratemeter)
AUDIO: built in unimorph speaker with volume control
AUDIO DIVIDE: operator selected divisions of 1, 10, or 100 events-per-click
ALARM: separate alarms for digital ratemeter, scaler, and integrated dose can be set at any point (audible and visual indicators)
ACK/SCROLL: pushbutton to silence audio after alarm has been indicated and/or scroll through the various displays
DATA LOGGER: capable of logging up to 1000 individual data points with the following identifiers for each point: 8 Location codes (5 character); Time of day; Month, Day, and Year; Count rate/scaler count/integrated dose; Count time; Detector number; Logging mode; Sample number
DETECTOR PARAMETERS: capable of storing the following parameters for 16 different detectors: Model number; Serial number; Calibration constant; Dead time correction; High voltage; Threshold; Window; Display range multiplier; Display time base; Display units; Overload current; Ratemeter alarm setting; Scaler alarm setting; Low ratemeter alarm setting; Integrated dose alarm setting; Scaler count time
RS-232 PORT: a full duplex communication port that allows for instrument setup by optional keypad or PC, also allows for data to be transferred to a PC file
BAR CODE READER (optional): allows for setup of instrument by computer generated bar codes
HIGH VOLTAGE: adjustable from 400-2500 volts
THRESHOLD: adjustable
WINDOW: adjustable
GAIN: adjustable from 2-350 mV at threshold setting of 100
DEAD TIME: adjustable to compensate for dead time of detector and electronics
RESPONSE:

FIXED: adjustable from 1-127 seconds in 1 second intervals
VARIABLE: will vary according to number of counts present. Typical times FAST: 4-25 s, SLOW: 4-60 s from 10% to 90% of final reading

TEMPERATURE RANGE: 32 to 122 °F (0 to 50° C) (LCD display limits temperature range)
POWER: 4 each “D” cell batteries
BATTERY LIFE: greater than 75 hours (low battery condition is automatically indicated)
SIZE: 5.6 x 4.3 x 8.8 in. (14.2 x 11 x 22 cm) (H x W x L) without handle, 8.2 in. (20.9 cm) (H) with handle
WEIGHT: 5.2 lbs (2.4 kg) including batteries