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Cdx2000b main 1400

Machine QA Patient QA Diagnostic Health Physics

CDX 2000B Electrometer Low Noise, Repeatable Measurements

The CDX 2000B is a stable, lightweight electrometer for use in external beam dosimetry measurements and precise HDR brachytherapy calibrations.

Dimensions

  • Height
    7 cm (2.75 in)
  • Width
    22.2 cm (8.24 in)
  • Length
    23 cm (9 in)
  • Weight
    1.4 kg (3.00 lbs)

Three Modes

  • Rate
    0.001 nA – 500.00 nA, 1 pA resolution
  • Charge
    0.01 nC – 999,999 nC, 10 pC resolution
  • Combined
    Accumulated charge and the current readings are displayed simultaneously

Charge Collections

  • Timed
    User set duration (Range: 0 – 600 sec; Increment: 15 sec; Resolution: 1 sec)
  • Continuous
    Unlimited duration with manual stop

Bias Voltage

  • Nominal ± 450 volt bias
  • 5 User Bias Setting
    -450, - 300, - 150, 0; 150, 300, 450 (VDC)
  • Accuracy
    ± 0.3 volt

Specifications

  • Repeatability
    ± 0.1%
  • Long-Term Stability
    0.5% (over one year)
  • Stabilization Time
    ± 0.1%
  • Response Time
    < 3 s
  • Non-Linearity
    ± 0.25%
  • Conformity
    CE 93/42/EEC
  • Zero Drift
    ± 0.25%
  • Zero Shift
    ± 0.25%
  • Display
    Backlit LCD, 2 x 20 with 5/16" characters
  • Input
    BNC two lug, triaxial connector
  • Zeroing
    Automatic zero function, user activated
  • Output
    Isolated RS-232; unidirectional 19,200 baud rate; 8 data bits; no parity; 1 stop bit
  • Power
    100-240 VAC, 0.5 A max, 50/60 Hz input to external power supply, 9 VDC, 1.7 A power supply output to electrometer input, UL/TUL listed power supply; internal battery: 8 hrs per charge
  • Product Standards
    CE 93/42/EEC

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Tech Notes

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