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    The Ludlum Measurements 2241-3RK
    The Ludlum Measurements 2241-3RK
    Ludlum

    Ludlum Measurements 2241-3RK

    Daily Rate $40

    Weekly Rate $125

    Monthly Rate $390

    This instrument is a general purpose, digital ratemeter with a built-in scaler that facilitates timed counts over a user specified period. The LCD presents readings in a 4-digit moving decimal format together with one of a wide range of available units of measure and is accompanied by several operational and alert icons. The LCD backlight can be activated and remains lit for a user-adjustable interval. This instrument features adjustable Alert and Alarm setpoints for both the Ratemeter and Scaler modes. Front panel controls include a rotary switch for selecting between Off, Ratemeter Mode and Scaler Mode; switches for audio on/off and fast/slow response time; and push-buttons for activating the LCD backlight and for either resetting the counts or acknowledging alarms.

    Description


    Ludlum Measuerments 2241-3RK

    Digital Scaler-Ratemeter

    Features

    • Digital Ratemeter with Built-In Scaler

    • Auto-Ranging


    • Adjustable Audible and Visual Alarms

    • Wide Range HV

    • Overrange & Overload Protection

    • For Use with GM, Proportional &
      Scintillation Detectors


    Specifications

    Detectors
    Geiger-Mueller (GM), proportional, and scintillation
    Alert/Alarm
    indicated by annunciation on display
    built-in speaker for audible tone
    set at any range
    speaker volume control available as an option
    Display
    4-digit LCD display with 1.3 cm (0.5 in.) high digits, 2 additional 0.5 cm (0.2 in.) digits for overflow counter, (SCALER
    mode) and exponential powers (parameter setup); separate annunciators for display units, ALERT, ALARM, low battery,
    detector OVERLOAD, counting OVERFLOW, and scaler COUNTING
    Backlight
    pushbutton activates LCD backlight for a pre-programmed time
    Ratemeter
    can display in R/hr, Sv/h, cpm, or cps when selector switch is in RATEMETER position
    Display Range
    auto ranging from 0.0 μR/hr – 9999 R/hr; 0.000 μSv/h – 9999 Sv/h; 0 cpm – 999 kcpm; or 0 cps –100 kcps
    Scaler
    adjustable from 1 – 9999 seconds (in 1-second intervals)
    Scaler Alarm
    adjustable from 1 – 999999 counts


    Detector Dead Time Compensation
    adjustable from 0 to 9999 microseconds
    Linearity
    within 10%
    Adjustable Parameters
    Backlight “ON” time, set minimum Display, RS-232 data dump
    mode, RS-232 Detector Setup mode, Baud rate, detector dead time compensation (DTC), Calibration Constant, display Units,
    display Range, Time Base (seconds or minutes), Auto Divide, Response Time (variable or fixed), Ratemeter Alert/Alarm, Scaler
    Alarm, Scaler Count Time
    Audio
    built-in unimorph speaker with AUD ON/OFF switch and volume control potentiometer
    High Voltage
    400 to 2400 volts (regulated within 0.2 % at 1000 Vdc; maximum load of 50 μA)
    Discriminator/Input Sensitivity
    adjustable from 2–100 mV; negative pulse response
    Power
    2 “D” cell batteries housed in externally accessible sealed compartment
    Battery Life
    typically 200 hours with alkaline batteries (Low Battery warning icon on LCD)
    Size
    16.5 x 8.9 x 21.6 cm (6.5 x 3.5 x 8.5 in.) (H x W x L)
    Weight
    1.6 kg (3.5 lb), including batteries

    Resources


    Ludlum 2241 DataSheet


    Ludlum Manual

    Media

    Model 2241-3RK2 Response Kit Quick Start Guide

    Contact Us

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    108 Commercial Pl Ste 200, Schertz, TX 78154

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